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authorStephen Hines <srhines@google.com>2015-03-23 12:10:34 -0700
committerStephen Hines <srhines@google.com>2015-03-23 12:10:34 -0700
commitebe69fe11e48d322045d5949c83283927a0d790b (patch)
treec92f1907a6b8006628a4b01615f38264d29834ea /examples
parentb7d2e72b02a4cb8034f32f8247a2558d2434e121 (diff)
downloadexternal_llvm-ebe69fe11e48d322045d5949c83283927a0d790b.zip
external_llvm-ebe69fe11e48d322045d5949c83283927a0d790b.tar.gz
external_llvm-ebe69fe11e48d322045d5949c83283927a0d790b.tar.bz2
Update aosp/master LLVM for rebase to r230699.
Change-Id: I2b5be30509658cb8266be782de0ab24f9099f9b9
Diffstat (limited to 'examples')
-rw-r--r--examples/ExceptionDemo/ExceptionDemo.cpp41
-rw-r--r--examples/Kaleidoscope/CMakeLists.txt10
-rw-r--r--examples/Kaleidoscope/Chapter2/CMakeLists.txt2
-rw-r--r--examples/Kaleidoscope/Chapter3/CMakeLists.txt2
-rw-r--r--examples/Kaleidoscope/Chapter4/CMakeLists.txt8
-rw-r--r--examples/Kaleidoscope/Chapter4/toy.cpp549
-rw-r--r--examples/Kaleidoscope/Chapter5/CMakeLists.txt6
-rw-r--r--examples/Kaleidoscope/Chapter5/toy.cpp464
-rw-r--r--examples/Kaleidoscope/Chapter6/CMakeLists.txt6
-rw-r--r--examples/Kaleidoscope/Chapter6/toy.cpp519
-rw-r--r--examples/Kaleidoscope/Chapter7/CMakeLists.txt6
-rw-r--r--examples/Kaleidoscope/Chapter7/toy.cpp603
-rw-r--r--examples/Kaleidoscope/Chapter8/CMakeLists.txt13
-rw-r--r--examples/Kaleidoscope/Chapter8/Makefile16
-rw-r--r--examples/Kaleidoscope/Chapter8/toy.cpp1494
-rw-r--r--examples/Kaleidoscope/MCJIT/cached/toy-jit.cpp2
-rw-r--r--examples/Kaleidoscope/MCJIT/cached/toy.cpp252
-rw-r--r--examples/Kaleidoscope/MCJIT/complete/toy.cpp8
-rw-r--r--examples/Kaleidoscope/MCJIT/initial/toy.cpp250
-rw-r--r--examples/Kaleidoscope/MCJIT/lazy/toy-jit.cpp2
-rw-r--r--examples/Kaleidoscope/MCJIT/lazy/toy.cpp248
-rw-r--r--examples/Kaleidoscope/Makefile2
-rw-r--r--examples/Kaleidoscope/Orc/CMakeLists.txt4
-rw-r--r--examples/Kaleidoscope/Orc/fully_lazy/CMakeLists.txt13
-rw-r--r--examples/Kaleidoscope/Orc/fully_lazy/Makefile17
-rw-r--r--examples/Kaleidoscope/Orc/fully_lazy/README.txt21
-rw-r--r--examples/Kaleidoscope/Orc/fully_lazy/toy.cpp1437
-rw-r--r--examples/Kaleidoscope/Orc/initial/CMakeLists.txt12
-rw-r--r--examples/Kaleidoscope/Orc/initial/Makefile17
-rw-r--r--examples/Kaleidoscope/Orc/initial/README.txt13
-rw-r--r--examples/Kaleidoscope/Orc/initial/toy.cpp1333
-rw-r--r--examples/Kaleidoscope/Orc/lazy_codegen/CMakeLists.txt12
-rw-r--r--examples/Kaleidoscope/Orc/lazy_codegen/Makefile17
-rw-r--r--examples/Kaleidoscope/Orc/lazy_codegen/README.txt13
-rw-r--r--examples/Kaleidoscope/Orc/lazy_codegen/toy.cpp1338
-rw-r--r--examples/Kaleidoscope/Orc/lazy_irgen/CMakeLists.txt12
-rw-r--r--examples/Kaleidoscope/Orc/lazy_irgen/Makefile17
-rw-r--r--examples/Kaleidoscope/Orc/lazy_irgen/README.txt16
-rw-r--r--examples/Kaleidoscope/Orc/lazy_irgen/toy.cpp1373
39 files changed, 8933 insertions, 1235 deletions
diff --git a/examples/ExceptionDemo/ExceptionDemo.cpp b/examples/ExceptionDemo/ExceptionDemo.cpp
index 17076fa..317a326 100644
--- a/examples/ExceptionDemo/ExceptionDemo.cpp
+++ b/examples/ExceptionDemo/ExceptionDemo.cpp
@@ -56,8 +56,8 @@
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/LegacyPassManager.h"
#include "llvm/IR/Module.h"
-#include "llvm/PassManager.h"
#include "llvm/Support/Dwarf.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Target/TargetOptions.h"
@@ -1122,14 +1122,11 @@ static llvm::BasicBlock *createCatchBlock(llvm::LLVMContext &context,
/// @param numExceptionsToCatch length of exceptionTypesToCatch array
/// @param exceptionTypesToCatch array of type info types to "catch"
/// @returns generated function
-static
-llvm::Function *createCatchWrappedInvokeFunction(llvm::Module &module,
- llvm::IRBuilder<> &builder,
- llvm::FunctionPassManager &fpm,
- llvm::Function &toInvoke,
- std::string ourId,
- unsigned numExceptionsToCatch,
- unsigned exceptionTypesToCatch[]) {
+static llvm::Function *createCatchWrappedInvokeFunction(
+ llvm::Module &module, llvm::IRBuilder<> &builder,
+ llvm::legacy::FunctionPassManager &fpm, llvm::Function &toInvoke,
+ std::string ourId, unsigned numExceptionsToCatch,
+ unsigned exceptionTypesToCatch[]) {
llvm::LLVMContext &context = module.getContext();
llvm::Function *toPrint32Int = module.getFunction("print32Int");
@@ -1389,13 +1386,11 @@ llvm::Function *createCatchWrappedInvokeFunction(llvm::Module &module,
/// @param nativeThrowFunct function which will throw a foreign exception
/// if the above nativeThrowType matches generated function's arg.
/// @returns generated function
-static
-llvm::Function *createThrowExceptionFunction(llvm::Module &module,
- llvm::IRBuilder<> &builder,
- llvm::FunctionPassManager &fpm,
- std::string ourId,
- int32_t nativeThrowType,
- llvm::Function &nativeThrowFunct) {
+static llvm::Function *
+createThrowExceptionFunction(llvm::Module &module, llvm::IRBuilder<> &builder,
+ llvm::legacy::FunctionPassManager &fpm,
+ std::string ourId, int32_t nativeThrowType,
+ llvm::Function &nativeThrowFunct) {
llvm::LLVMContext &context = module.getContext();
namedValues.clear();
ArgTypes unwindArgTypes;
@@ -1508,10 +1503,10 @@ static void createStandardUtilityFunctions(unsigned numTypeInfos,
/// @param nativeThrowFunctName name of external function which will throw
/// a foreign exception
/// @returns outermost generated test function.
-llvm::Function *createUnwindExceptionTest(llvm::Module &module,
- llvm::IRBuilder<> &builder,
- llvm::FunctionPassManager &fpm,
- std::string nativeThrowFunctName) {
+llvm::Function *
+createUnwindExceptionTest(llvm::Module &module, llvm::IRBuilder<> &builder,
+ llvm::legacy::FunctionPassManager &fpm,
+ std::string nativeThrowFunctName) {
// Number of type infos to generate
unsigned numTypeInfos = 6;
@@ -1961,17 +1956,17 @@ int main(int argc, char *argv[]) {
llvm::make_unique<llvm::Module>("my cool jit", context);
llvm::Module *module = Owner.get();
- llvm::RTDyldMemoryManager *MemMgr = new llvm::SectionMemoryManager();
+ std::unique_ptr<llvm::RTDyldMemoryManager> MemMgr(new llvm::SectionMemoryManager());
// Build engine with JIT
llvm::EngineBuilder factory(std::move(Owner));
factory.setEngineKind(llvm::EngineKind::JIT);
factory.setTargetOptions(Opts);
- factory.setMCJITMemoryManager(MemMgr);
+ factory.setMCJITMemoryManager(std::move(MemMgr));
llvm::ExecutionEngine *executionEngine = factory.create();
{
- llvm::FunctionPassManager fpm(module);
+ llvm::legacy::FunctionPassManager fpm(module);
// Set up the optimizer pipeline.
// Start with registering info about how the
diff --git a/examples/Kaleidoscope/CMakeLists.txt b/examples/Kaleidoscope/CMakeLists.txt
index 8c87ac5..32664aa 100644
--- a/examples/Kaleidoscope/CMakeLists.txt
+++ b/examples/Kaleidoscope/CMakeLists.txt
@@ -1,6 +1,16 @@
+add_custom_target(Kaleidoscope)
+set_target_properties(Kaleidoscope PROPERTIES FOLDER Examples)
+
+macro(add_kaleidoscope_chapter name)
+ add_dependencies(Kaleidoscope ${name})
+ add_llvm_example(${name} ${ARGN})
+endmacro(add_kaleidoscope_chapter name)
+
add_subdirectory(Chapter2)
add_subdirectory(Chapter3)
add_subdirectory(Chapter4)
add_subdirectory(Chapter5)
add_subdirectory(Chapter6)
add_subdirectory(Chapter7)
+add_subdirectory(Chapter8)
+add_subdirectory(Orc)
diff --git a/examples/Kaleidoscope/Chapter2/CMakeLists.txt b/examples/Kaleidoscope/Chapter2/CMakeLists.txt
index 79f2b17..fed3f4b 100644
--- a/examples/Kaleidoscope/Chapter2/CMakeLists.txt
+++ b/examples/Kaleidoscope/Chapter2/CMakeLists.txt
@@ -1,3 +1,3 @@
-add_llvm_example(Kaleidoscope-Ch2
+add_kaleidoscope_chapter(Kaleidoscope-Ch2
toy.cpp
)
diff --git a/examples/Kaleidoscope/Chapter3/CMakeLists.txt b/examples/Kaleidoscope/Chapter3/CMakeLists.txt
index a98d7df..8053c96 100644
--- a/examples/Kaleidoscope/Chapter3/CMakeLists.txt
+++ b/examples/Kaleidoscope/Chapter3/CMakeLists.txt
@@ -3,6 +3,6 @@ set(LLVM_LINK_COMPONENTS
Support
)
-add_llvm_example(Kaleidoscope-Ch3
+add_kaleidoscope_chapter(Kaleidoscope-Ch3
toy.cpp
)
diff --git a/examples/Kaleidoscope/Chapter4/CMakeLists.txt b/examples/Kaleidoscope/Chapter4/CMakeLists.txt
index 2f828dc..2c01e12 100644
--- a/examples/Kaleidoscope/Chapter4/CMakeLists.txt
+++ b/examples/Kaleidoscope/Chapter4/CMakeLists.txt
@@ -3,12 +3,14 @@ set(LLVM_LINK_COMPONENTS
Core
ExecutionEngine
InstCombine
- MC
+ MCJIT
+ RuntimeDyld
ScalarOpts
Support
- nativecodegen
+ TransformUtils
+ native
)
-add_llvm_example(Kaleidoscope-Ch4
+add_kaleidoscope_chapter(Kaleidoscope-Ch4
toy.cpp
)
diff --git a/examples/Kaleidoscope/Chapter4/toy.cpp b/examples/Kaleidoscope/Chapter4/toy.cpp
index 3564d75..70fe57f 100644
--- a/examples/Kaleidoscope/Chapter4/toy.cpp
+++ b/examples/Kaleidoscope/Chapter4/toy.cpp
@@ -1,12 +1,14 @@
#include "llvm/Analysis/Passes.h"
#include "llvm/ExecutionEngine/ExecutionEngine.h"
+#include "llvm/ExecutionEngine/MCJIT.h"
+#include "llvm/ExecutionEngine/SectionMemoryManager.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/LegacyPassManager.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Verifier.h"
-#include "llvm/PassManager.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Transforms/Scalar.h"
#include <cctype>
@@ -26,14 +28,16 @@ enum Token {
tok_eof = -1,
// commands
- tok_def = -2, tok_extern = -3,
+ tok_def = -2,
+ tok_extern = -3,
// primary
- tok_identifier = -4, tok_number = -5
+ tok_identifier = -4,
+ tok_number = -5
};
-static std::string IdentifierStr; // Filled in if tok_identifier
-static double NumVal; // Filled in if tok_number
+static std::string IdentifierStr; // Filled in if tok_identifier
+static double NumVal; // Filled in if tok_number
/// gettok - Return the next token from standard input.
static int gettok() {
@@ -48,12 +52,14 @@ static int gettok() {
while (isalnum((LastChar = getchar())))
IdentifierStr += LastChar;
- if (IdentifierStr == "def") return tok_def;
- if (IdentifierStr == "extern") return tok_extern;
+ if (IdentifierStr == "def")
+ return tok_def;
+ if (IdentifierStr == "extern")
+ return tok_extern;
return tok_identifier;
}
- if (isdigit(LastChar) || LastChar == '.') { // Number: [0-9.]+
+ if (isdigit(LastChar) || LastChar == '.') { // Number: [0-9.]+
std::string NumStr;
do {
NumStr += LastChar;
@@ -66,13 +72,14 @@ static int gettok() {
if (LastChar == '#') {
// Comment until end of line.
- do LastChar = getchar();
+ do
+ LastChar = getchar();
while (LastChar != EOF && LastChar != '\n' && LastChar != '\r');
-
+
if (LastChar != EOF)
return gettok();
}
-
+
// Check for end of file. Don't eat the EOF.
if (LastChar == EOF)
return tok_eof;
@@ -97,6 +104,7 @@ public:
/// NumberExprAST - Expression class for numeric literals like "1.0".
class NumberExprAST : public ExprAST {
double Val;
+
public:
NumberExprAST(double val) : Val(val) {}
virtual Value *Codegen();
@@ -105,6 +113,7 @@ public:
/// VariableExprAST - Expression class for referencing a variable, like "a".
class VariableExprAST : public ExprAST {
std::string Name;
+
public:
VariableExprAST(const std::string &name) : Name(name) {}
virtual Value *Codegen();
@@ -114,19 +123,21 @@ public:
class BinaryExprAST : public ExprAST {
char Op;
ExprAST *LHS, *RHS;
+
public:
- BinaryExprAST(char op, ExprAST *lhs, ExprAST *rhs)
- : Op(op), LHS(lhs), RHS(rhs) {}
+ BinaryExprAST(char op, ExprAST *lhs, ExprAST *rhs)
+ : Op(op), LHS(lhs), RHS(rhs) {}
virtual Value *Codegen();
};
/// CallExprAST - Expression class for function calls.
class CallExprAST : public ExprAST {
std::string Callee;
- std::vector<ExprAST*> Args;
+ std::vector<ExprAST *> Args;
+
public:
- CallExprAST(const std::string &callee, std::vector<ExprAST*> &args)
- : Callee(callee), Args(args) {}
+ CallExprAST(const std::string &callee, std::vector<ExprAST *> &args)
+ : Callee(callee), Args(args) {}
virtual Value *Codegen();
};
@@ -136,10 +147,11 @@ public:
class PrototypeAST {
std::string Name;
std::vector<std::string> Args;
+
public:
PrototypeAST(const std::string &name, const std::vector<std::string> &args)
- : Name(name), Args(args) {}
-
+ : Name(name), Args(args) {}
+
Function *Codegen();
};
@@ -147,10 +159,10 @@ public:
class FunctionAST {
PrototypeAST *Proto;
ExprAST *Body;
+
public:
- FunctionAST(PrototypeAST *proto, ExprAST *body)
- : Proto(proto), Body(body) {}
-
+ FunctionAST(PrototypeAST *proto, ExprAST *body) : Proto(proto), Body(body) {}
+
Function *Codegen();
};
} // end anonymous namespace
@@ -163,9 +175,7 @@ public:
/// token the parser is looking at. getNextToken reads another token from the
/// lexer and updates CurTok with its results.
static int CurTok;
-static int getNextToken() {
- return CurTok = gettok();
-}
+static int getNextToken() { return CurTok = gettok(); }
/// BinopPrecedence - This holds the precedence for each binary operator that is
/// defined.
@@ -175,17 +185,27 @@ static std::map<char, int> BinopPrecedence;
static int GetTokPrecedence() {
if (!isascii(CurTok))
return -1;
-
+
// Make sure it's a declared binop.
int TokPrec = BinopPrecedence[CurTok];
- if (TokPrec <= 0) return -1;
+ if (TokPrec <= 0)
+ return -1;
return TokPrec;
}
/// Error* - These are little helper functions for error handling.
-ExprAST *Error(const char *Str) { fprintf(stderr, "Error: %s\n", Str);return 0;}
-PrototypeAST *ErrorP(const char *Str) { Error(Str); return 0; }
-FunctionAST *ErrorF(const char *Str) { Error(Str); return 0; }
+ExprAST *Error(const char *Str) {
+ fprintf(stderr, "Error: %s\n", Str);
+ return 0;
+}
+PrototypeAST *ErrorP(const char *Str) {
+ Error(Str);
+ return 0;
+}
+FunctionAST *ErrorF(const char *Str) {
+ Error(Str);
+ return 0;
+}
static ExprAST *ParseExpression();
@@ -194,22 +214,24 @@ static ExprAST *ParseExpression();
/// ::= identifier '(' expression* ')'
static ExprAST *ParseIdentifierExpr() {
std::string IdName = IdentifierStr;
-
- getNextToken(); // eat identifier.
-
+
+ getNextToken(); // eat identifier.
+
if (CurTok != '(') // Simple variable ref.
return new VariableExprAST(IdName);
-
+
// Call.
- getNextToken(); // eat (
- std::vector<ExprAST*> Args;
+ getNextToken(); // eat (
+ std::vector<ExprAST *> Args;
if (CurTok != ')') {
while (1) {
ExprAST *Arg = ParseExpression();
- if (!Arg) return 0;
+ if (!Arg)
+ return 0;
Args.push_back(Arg);
- if (CurTok == ')') break;
+ if (CurTok == ')')
+ break;
if (CurTok != ',')
return Error("Expected ')' or ',' in argument list");
@@ -219,7 +241,7 @@ static ExprAST *ParseIdentifierExpr() {
// Eat the ')'.
getNextToken();
-
+
return new CallExprAST(IdName, Args);
}
@@ -232,13 +254,14 @@ static ExprAST *ParseNumberExpr() {
/// parenexpr ::= '(' expression ')'
static ExprAST *ParseParenExpr() {
- getNextToken(); // eat (.
+ getNextToken(); // eat (.
ExprAST *V = ParseExpression();
- if (!V) return 0;
-
+ if (!V)
+ return 0;
+
if (CurTok != ')')
return Error("expected ')'");
- getNextToken(); // eat ).
+ getNextToken(); // eat ).
return V;
}
@@ -248,10 +271,14 @@ static ExprAST *ParseParenExpr() {
/// ::= parenexpr
static ExprAST *ParsePrimary() {
switch (CurTok) {
- default: return Error("unknown token when expecting an expression");
- case tok_identifier: return ParseIdentifierExpr();
- case tok_number: return ParseNumberExpr();
- case '(': return ParseParenExpr();
+ default:
+ return Error("unknown token when expecting an expression");
+ case tok_identifier:
+ return ParseIdentifierExpr();
+ case tok_number:
+ return ParseNumberExpr();
+ case '(':
+ return ParseParenExpr();
}
}
@@ -261,28 +288,30 @@ static ExprAST *ParseBinOpRHS(int ExprPrec, ExprAST *LHS) {
// If this is a binop, find its precedence.
while (1) {
int TokPrec = GetTokPrecedence();
-
+
// If this is a binop that binds at least as tightly as the current binop,
// consume it, otherwise we are done.
if (TokPrec < ExprPrec)
return LHS;
-
+
// Okay, we know this is a binop.
int BinOp = CurTok;
- getNextToken(); // eat binop
-
+ getNextToken(); // eat binop
+
// Parse the primary expression after the binary operator.
ExprAST *RHS = ParsePrimary();
- if (!RHS) return 0;
-
+ if (!RHS)
+ return 0;
+
// If BinOp binds less tightly with RHS than the operator after RHS, let
// the pending operator take RHS as its LHS.
int NextPrec = GetTokPrecedence();
if (TokPrec < NextPrec) {
- RHS = ParseBinOpRHS(TokPrec+1, RHS);
- if (RHS == 0) return 0;
+ RHS = ParseBinOpRHS(TokPrec + 1, RHS);
+ if (RHS == 0)
+ return 0;
}
-
+
// Merge LHS/RHS.
LHS = new BinaryExprAST(BinOp, LHS, RHS);
}
@@ -293,8 +322,9 @@ static ExprAST *ParseBinOpRHS(int ExprPrec, ExprAST *LHS) {
///
static ExprAST *ParseExpression() {
ExprAST *LHS = ParsePrimary();
- if (!LHS) return 0;
-
+ if (!LHS)
+ return 0;
+
return ParseBinOpRHS(0, LHS);
}
@@ -306,27 +336,28 @@ static PrototypeAST *ParsePrototype() {
std::string FnName = IdentifierStr;
getNextToken();
-
+
if (CurTok != '(')
return ErrorP("Expected '(' in prototype");
-
+
std::vector<std::string> ArgNames;
while (getNextToken() == tok_identifier)
ArgNames.push_back(IdentifierStr);
if (CurTok != ')')
return ErrorP("Expected ')' in prototype");
-
+
// success.
- getNextToken(); // eat ')'.
-
+ getNextToken(); // eat ')'.
+
return new PrototypeAST(FnName, ArgNames);
}
/// definition ::= 'def' prototype expression
static FunctionAST *ParseDefinition() {
- getNextToken(); // eat def.
+ getNextToken(); // eat def.
PrototypeAST *Proto = ParsePrototype();
- if (Proto == 0) return 0;
+ if (Proto == 0)
+ return 0;
if (ExprAST *E = ParseExpression())
return new FunctionAST(Proto, E);
@@ -345,20 +376,258 @@ static FunctionAST *ParseTopLevelExpr() {
/// external ::= 'extern' prototype
static PrototypeAST *ParseExtern() {
- getNextToken(); // eat extern.
+ getNextToken(); // eat extern.
return ParsePrototype();
}
//===----------------------------------------------------------------------===//
+// Quick and dirty hack
+//===----------------------------------------------------------------------===//
+
+// FIXME: Obviously we can do better than this
+std::string GenerateUniqueName(const char *root) {
+ static int i = 0;
+ char s[16];
+ sprintf(s, "%s%d", root, i++);
+ std::string S = s;
+ return S;
+}
+
+std::string MakeLegalFunctionName(std::string Name) {
+ std::string NewName;
+ if (!Name.length())
+ return GenerateUniqueName("anon_func_");
+
+ // Start with what we have
+ NewName = Name;
+
+ // Look for a numberic first character
+ if (NewName.find_first_of("0123456789") == 0) {
+ NewName.insert(0, 1, 'n');
+ }
+
+ // Replace illegal characters with their ASCII equivalent
+ std::string legal_elements =
+ "_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+ size_t pos;
+ while ((pos = NewName.find_first_not_of(legal_elements)) !=
+ std::string::npos) {
+ char old_c = NewName.at(pos);
+ char new_str[16];
+ sprintf(new_str, "%d", (int)old_c);
+ NewName = NewName.replace(pos, 1, new_str);
+ }
+
+ return NewName;
+}
+
+//===----------------------------------------------------------------------===//
+// MCJIT helper class
+//===----------------------------------------------------------------------===//
+
+class MCJITHelper {
+public:
+ MCJITHelper(LLVMContext &C) : Context(C), OpenModule(NULL) {}
+ ~MCJITHelper();
+
+ Function *getFunction(const std::string FnName);
+ Module *getModuleForNewFunction();
+ void *getPointerToFunction(Function *F);
+ void *getSymbolAddress(const std::string &Name);
+ void dump();
+
+private:
+ typedef std::vector<Module *> ModuleVector;
+ typedef std::vector<ExecutionEngine *> EngineVector;
+
+ LLVMContext &Context;
+ Module *OpenModule;
+ ModuleVector Modules;
+ EngineVector Engines;
+};
+
+class HelpingMemoryManager : public SectionMemoryManager {
+ HelpingMemoryManager(const HelpingMemoryManager &) = delete;
+ void operator=(const HelpingMemoryManager &) = delete;
+
+public:
+ HelpingMemoryManager(MCJITHelper *Helper) : MasterHelper(Helper) {}
+ virtual ~HelpingMemoryManager() {}
+
+ /// This method returns the address of the specified symbol.
+ /// Our implementation will attempt to find symbols in other
+ /// modules associated with the MCJITHelper to cross link symbols
+ /// from one generated module to another.
+ virtual uint64_t getSymbolAddress(const std::string &Name) override;
+
+private:
+ MCJITHelper *MasterHelper;
+};
+
+uint64_t HelpingMemoryManager::getSymbolAddress(const std::string &Name) {
+ uint64_t FnAddr = SectionMemoryManager::getSymbolAddress(Name);
+ if (FnAddr)
+ return FnAddr;
+
+ uint64_t HelperFun = (uint64_t)MasterHelper->getSymbolAddress(Name);
+ if (!HelperFun)
+ report_fatal_error("Program used extern function '" + Name +
+ "' which could not be resolved!");
+
+ return HelperFun;
+}
+
+MCJITHelper::~MCJITHelper() {
+ if (OpenModule)
+ delete OpenModule;
+ EngineVector::iterator begin = Engines.begin();
+ EngineVector::iterator end = Engines.end();
+ EngineVector::iterator it;
+ for (it = begin; it != end; ++it)
+ delete *it;
+}
+
+Function *MCJITHelper::getFunction(const std::string FnName) {
+ ModuleVector::iterator begin = Modules.begin();
+ ModuleVector::iterator end = Modules.end();
+ ModuleVector::iterator it;
+ for (it = begin; it != end; ++it) {
+ Function *F = (*it)->getFunction(FnName);
+ if (F) {
+ if (*it == OpenModule)
+ return F;
+
+ assert(OpenModule != NULL);
+
+ // This function is in a module that has already been JITed.
+ // We need to generate a new prototype for external linkage.
+ Function *PF = OpenModule->getFunction(FnName);
+ if (PF && !PF->empty()) {
+ ErrorF("redefinition of function across modules");
+ return 0;
+ }
+
+ // If we don't have a prototype yet, create one.
+ if (!PF)
+ PF = Function::Create(F->getFunctionType(), Function::ExternalLinkage,
+ FnName, OpenModule);
+ return PF;
+ }
+ }
+ return NULL;
+}
+
+Module *MCJITHelper::getModuleForNewFunction() {
+ // If we have a Module that hasn't been JITed, use that.
+ if (OpenModule)
+ return OpenModule;
+
+ // Otherwise create a new Module.
+ std::string ModName = GenerateUniqueName("mcjit_module_");
+ Module *M = new Module(ModName, Context);
+ Modules.push_back(M);
+ OpenModule = M;
+ return M;
+}
+
+void *MCJITHelper::getPointerToFunction(Function *F) {
+ // See if an existing instance of MCJIT has this function.
+ EngineVector::iterator begin = Engines.begin();
+ EngineVector::iterator end = Engines.end();
+ EngineVector::iterator it;
+ for (it = begin; it != end; ++it) {
+ void *P = (*it)->getPointerToFunction(F);
+ if (P)
+ return P;
+ }
+
+ // If we didn't find the function, see if we can generate it.
+ if (OpenModule) {
+ std::string ErrStr;
+ ExecutionEngine *NewEngine =
+ EngineBuilder(std::unique_ptr<Module>(OpenModule))
+ .setErrorStr(&ErrStr)
+ .setMCJITMemoryManager(std::unique_ptr<HelpingMemoryManager>(
+ new HelpingMemoryManager(this)))
+ .create();
+ if (!NewEngine) {
+ fprintf(stderr, "Could not create ExecutionEngine: %s\n", ErrStr.c_str());
+ exit(1);
+ }
+
+ // Create a function pass manager for this engine
+ auto *FPM = new legacy::FunctionPassManager(OpenModule);
+
+ // Set up the optimizer pipeline. Start with registering info about how the
+ // target lays out data structures.
+ OpenModule->setDataLayout(NewEngine->getDataLayout());
+ FPM->add(new DataLayoutPass());
+ // Provide basic AliasAnalysis support for GVN.
+ FPM->add(createBasicAliasAnalysisPass());
+ // Promote allocas to registers.
+ FPM->add(createPromoteMemoryToRegisterPass());
+ // Do simple "peephole" optimizations and bit-twiddling optzns.
+ FPM->add(createInstructionCombiningPass());
+ // Reassociate expressions.
+ FPM->add(createReassociatePass());
+ // Eliminate Common SubExpressions.
+ FPM->add(createGVNPass());
+ // Simplify the control flow graph (deleting unreachable blocks, etc).
+ FPM->add(createCFGSimplificationPass());
+ FPM->doInitialization();
+
+ // For each function in the module
+ Module::iterator it;
+ Module::iterator end = OpenModule->end();
+ for (it = OpenModule->begin(); it != end; ++it) {
+ // Run the FPM on this function
+ FPM->run(*it);
+ }
+
+ // We don't need this anymore
+ delete FPM;
+
+ OpenModule = NULL;
+ Engines.push_back(NewEngine);
+ NewEngine->finalizeObject();
+ return NewEngine->getPointerToFunction(F);
+ }
+ return NULL;
+}
+
+void *MCJITHelper::getSymbolAddress(const std::string &Name) {
+ // Look for the symbol in each of our execution engines.
+ EngineVector::iterator begin = Engines.begin();
+ EngineVector::iterator end = Engines.end();
+ EngineVector::iterator it;
+ for (it = begin; it != end; ++it) {
+ uint64_t FAddr = (*it)->getFunctionAddress(Name);
+ if (FAddr) {
+ return (void *)FAddr;
+ }
+ }
+ return NULL;
+}
+
+void MCJITHelper::dump() {
+ ModuleVector::iterator begin = Modules.begin();
+ ModuleVector::iterator end = Modules.end();
+ ModuleVector::iterator it;
+ for (it = begin; it != end; ++it)
+ (*it)->dump();
+}
+//===----------------------------------------------------------------------===//
// Code Generation
//===----------------------------------------------------------------------===//
-static Module *TheModule;
+static MCJITHelper *JITHelper;
static IRBuilder<> Builder(getGlobalContext());
-static std::map<std::string, Value*> NamedValues;
-static FunctionPassManager *TheFPM;
+static std::map<std::string, Value *> NamedValues;
-Value *ErrorV(const char *Str) { Error(Str); return 0; }
+Value *ErrorV(const char *Str) {
+ Error(Str);
+ return 0;
+}
Value *NumberExprAST::Codegen() {
return ConstantFP::get(getGlobalContext(), APFloat(Val));
@@ -373,93 +642,102 @@ Value *VariableExprAST::Codegen() {
Value *BinaryExprAST::Codegen() {
Value *L = LHS->Codegen();
Value *R = RHS->Codegen();
- if (L == 0 || R == 0) return 0;
-
+ if (L == 0 || R == 0)
+ return 0;
+
switch (Op) {
- case '+': return Builder.CreateFAdd(L, R, "addtmp");
- case '-': return Builder.CreateFSub(L, R, "subtmp");
- case '*': return Builder.CreateFMul(L, R, "multmp");
+ case '+':
+ return Builder.CreateFAdd(L, R, "addtmp");
+ case '-':
+ return Builder.CreateFSub(L, R, "subtmp");
+ case '*':
+ return Builder.CreateFMul(L, R, "multmp");
case '<':
L = Builder.CreateFCmpULT(L, R, "cmptmp");
// Convert bool 0/1 to double 0.0 or 1.0
return Builder.CreateUIToFP(L, Type::getDoubleTy(getGlobalContext()),
"booltmp");
- default: return ErrorV("invalid binary operator");
+ default:
+ return ErrorV("invalid binary operator");
}
}
Value *CallExprAST::Codegen() {
// Look up the name in the global module table.
- Function *CalleeF = TheModule->getFunction(Callee);
+ Function *CalleeF = JITHelper->getFunction(Callee);
if (CalleeF == 0)
return ErrorV("Unknown function referenced");
-
+
// If argument mismatch error.
if (CalleeF->arg_size() != Args.size())
return ErrorV("Incorrect # arguments passed");
- std::vector<Value*> ArgsV;
+ std::vector<Value *> ArgsV;
for (unsigned i = 0, e = Args.size(); i != e; ++i) {
ArgsV.push_back(Args[i]->Codegen());
- if (ArgsV.back() == 0) return 0;
+ if (ArgsV.back() == 0)
+ return 0;
}
-
+
return Builder.CreateCall(CalleeF, ArgsV, "calltmp");
}
Function *PrototypeAST::Codegen() {
// Make the function type: double(double,double) etc.
- std::vector<Type*> Doubles(Args.size(),
- Type::getDoubleTy(getGlobalContext()));
- FunctionType *FT = FunctionType::get(Type::getDoubleTy(getGlobalContext()),
- Doubles, false);
-
- Function *F = Function::Create(FT, Function::ExternalLinkage, Name, TheModule);
-
+ std::vector<Type *> Doubles(Args.size(),
+ Type::getDoubleTy(getGlobalContext()));
+ FunctionType *FT =
+ FunctionType::get(Type::getDoubleTy(getGlobalContext()), Doubles, false);
+
+ std::string FnName = MakeLegalFunctionName(Name);
+
+ Module *M = JITHelper->getModuleForNewFunction();
+
+ Function *F = Function::Create(FT, Function::ExternalLinkage, FnName, M);
+
// If F conflicted, there was already something named 'Name'. If it has a
// body, don't allow redefinition or reextern.
- if (F->getName() != Name) {
+ if (F->getName() != FnName) {
// Delete the one we just made and get the existing one.
F->eraseFromParent();
- F = TheModule->getFunction(Name);
-
+ F = JITHelper->getFunction(Name);
// If F already has a body, reject this.
if (!F->empty()) {
ErrorF("redefinition of function");
return 0;
}
-
+
// If F took a different number of args, reject.
if (F->arg_size() != Args.size()) {
ErrorF("redefinition of function with different # args");
return 0;
}
}
-
+
// Set names for all arguments.
unsigned Idx = 0;
for (Function::arg_iterator AI = F->arg_begin(); Idx != Args.size();
++AI, ++Idx) {
AI->setName(Args[Idx]);
-
+
// Add arguments to variable symbol table.
NamedValues[Args[Idx]] = AI;
}
-
+
return F;
}
Function *FunctionAST::Codegen() {
NamedValues.clear();
-
+
Function *TheFunction = Proto->Codegen();
if (TheFunction == 0)
return 0;
-
+
// Create a new basic block to start insertion into.
BasicBlock *BB = BasicBlock::Create(getGlobalContext(), "entry", TheFunction);
Builder.SetInsertPoint(BB);
-
+
if (Value *RetVal = Body->Codegen()) {
// Finish off the function.
Builder.CreateRet(RetVal);
@@ -467,12 +745,9 @@ Function *FunctionAST::Codegen() {
// Validate the generated code, checking for consistency.
verifyFunction(*TheFunction);
- // Optimize the function.
- TheFPM->run(*TheFunction);
-
return TheFunction;
}
-
+
// Error reading body, remove function.
TheFunction->eraseFromParent();
return 0;
@@ -482,8 +757,6 @@ Function *FunctionAST::Codegen() {
// Top-Level parsing and JIT Driver
//===----------------------------------------------------------------------===//
-static ExecutionEngine *TheExecutionEngine;
-
static void HandleDefinition() {
if (FunctionAST *F = ParseDefinition()) {
if (Function *LF = F->Codegen()) {
@@ -513,8 +786,8 @@ static void HandleTopLevelExpression() {
if (FunctionAST *F = ParseTopLevelExpr()) {
if (Function *LF = F->Codegen()) {
// JIT the function, returning a function pointer.
- void *FPtr = TheExecutionEngine->getPointerToFunction(LF);
-
+ void *FPtr = JITHelper->getPointerToFunction(LF);
+
// Cast it to the right type (takes no arguments, returns a double) so we
// can call it as a native function.
double (*FP)() = (double (*)())(intptr_t)FPtr;
@@ -531,11 +804,20 @@ static void MainLoop() {
while (1) {
fprintf(stderr, "ready> ");
switch (CurTok) {
- case tok_eof: return;
- case ';': getNextToken(); break; // ignore top-level semicolons.
- case tok_def: HandleDefinition(); break;
- case tok_extern: HandleExtern(); break;
- default: HandleTopLevelExpression(); break;
+ case tok_eof:
+ return;
+ case ';':
+ getNextToken();
+ break; // ignore top-level semicolons.
+ case tok_def:
+ HandleDefinition();
+ break;
+ case tok_extern:
+ HandleExtern();
+ break;
+ default:
+ HandleTopLevelExpression();
+ break;
}
}
}
@@ -545,8 +827,7 @@ static void MainLoop() {
//===----------------------------------------------------------------------===//
/// putchard - putchar that takes a double and returns 0.
-extern "C"
-double putchard(double X) {
+extern "C" double putchard(double X) {
putchar((char)X);
return 0;
}
@@ -557,61 +838,27 @@ double putchard(double X) {
int main() {
InitializeNativeTarget();
+ InitializeNativeTargetAsmPrinter();
+ InitializeNativeTargetAsmParser();
LLVMContext &Context = getGlobalContext();
+ JITHelper = new MCJITHelper(Context);
// Install standard binary operators.
// 1 is lowest precedence.
BinopPrecedence['<'] = 10;
BinopPrecedence['+'] = 20;
BinopPrecedence['-'] = 20;
- BinopPrecedence['*'] = 40; // highest.
+ BinopPrecedence['*'] = 40; // highest.
// Prime the first token.
fprintf(stderr, "ready> ");
getNextToken();
- // Make the module, which holds all the code.
- std::unique_ptr<Module> Owner = make_unique<Module>("my cool jit", Context);
- TheModule = Owner.get();
-
- // Create the JIT. This takes ownership of the module.
- std::string ErrStr;
- TheExecutionEngine =
- EngineBuilder(std::move(Owner)).setErrorStr(&ErrStr).create();
- if (!TheExecutionEngine) {
- fprintf(stderr, "Could not create ExecutionEngine: %s\n", ErrStr.c_str());
- exit(1);
- }
-
- FunctionPassManager OurFPM(TheModule);
-
- // Set up the optimizer pipeline. Start with registering info about how the
- // target lays out data structures.
- TheModule->setDataLayout(TheExecutionEngine->getDataLayout());
- OurFPM.add(new DataLayoutPass());
- // Provide basic AliasAnalysis support for GVN.
- OurFPM.add(createBasicAliasAnalysisPass());
- // Do simple "peephole" optimizations and bit-twiddling optzns.
- OurFPM.add(createInstructionCombiningPass());
- // Reassociate expressions.
- OurFPM.add(createReassociatePass());
- // Eliminate Common SubExpressions.
- OurFPM.add(createGVNPass());
- // Simplify the control flow graph (deleting unreachable blocks, etc).
- OurFPM.add(createCFGSimplificationPass());
-
- OurFPM.doInitialization();
-
- // Set the global so the code gen can use this.
- TheFPM = &OurFPM;
-
// Run the main "interpreter loop" now.
MainLoop();
- TheFPM = 0;
-
// Print out all of the generated code.
- TheModule->dump();
+ JITHelper->dump();
return 0;
}
diff --git a/examples/Kaleidoscope/Chapter5/CMakeLists.txt b/examples/Kaleidoscope/Chapter5/CMakeLists.txt
index 1912ddc..aac9949 100644
--- a/examples/Kaleidoscope/Chapter5/CMakeLists.txt
+++ b/examples/Kaleidoscope/Chapter5/CMakeLists.txt
@@ -3,12 +3,12 @@ set(LLVM_LINK_COMPONENTS
Core
ExecutionEngine
InstCombine
- MC
+ MCJIT
ScalarOpts
Support
- nativecodegen
+ native
)
-add_llvm_example(Kaleidoscope-Ch5
+add_kaleidoscope_chapter(Kaleidoscope-Ch5
toy.cpp
)
diff --git a/examples/Kaleidoscope/Chapter5/toy.cpp b/examples/Kaleidoscope/Chapter5/toy.cpp
index 4929a20..728a2f5 100644
--- a/examples/Kaleidoscope/Chapter5/toy.cpp
+++ b/examples/Kaleidoscope/Chapter5/toy.cpp
@@ -1,12 +1,14 @@
#include "llvm/Analysis/Passes.h"
#include "llvm/ExecutionEngine/ExecutionEngine.h"
+#include "llvm/ExecutionEngine/MCJIT.h"
+#include "llvm/ExecutionEngine/SectionMemoryManager.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/LegacyPassManager.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Verifier.h"
-#include "llvm/PassManager.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Transforms/Scalar.h"
#include <cctype>
@@ -26,18 +28,23 @@ enum Token {
tok_eof = -1,
// commands
- tok_def = -2, tok_extern = -3,
+ tok_def = -2,
+ tok_extern = -3,
// primary
- tok_identifier = -4, tok_number = -5,
-
+ tok_identifier = -4,
+ tok_number = -5,
+
// control
- tok_if = -6, tok_then = -7, tok_else = -8,
- tok_for = -9, tok_in = -10
+ tok_if = -6,
+ tok_then = -7,
+ tok_else = -8,
+ tok_for = -9,
+ tok_in = -10
};
-static std::string IdentifierStr; // Filled in if tok_identifier
-static double NumVal; // Filled in if tok_number
+static std::string IdentifierStr; // Filled in if tok_identifier
+static double NumVal; // Filled in if tok_number
/// gettok - Return the next token from standard input.
static int gettok() {
@@ -52,17 +59,24 @@ static int gettok() {
while (isalnum((LastChar = getchar())))
IdentifierStr += LastChar;
- if (IdentifierStr == "def") return tok_def;
- if (IdentifierStr == "extern") return tok_extern;
- if (IdentifierStr == "if") return tok_if;
- if (IdentifierStr == "then") return tok_then;
- if (IdentifierStr == "else") return tok_else;
- if (IdentifierStr == "for") return tok_for;
- if (IdentifierStr == "in") return tok_in;
+ if (IdentifierStr == "def")
+ return tok_def;
+ if (IdentifierStr == "extern")
+ return tok_extern;
+ if (IdentifierStr == "if")
+ return tok_if;
+ if (IdentifierStr == "then")
+ return tok_then;
+ if (IdentifierStr == "else")
+ return tok_else;
+ if (IdentifierStr == "for")
+ return tok_for;
+ if (IdentifierStr == "in")
+ return tok_in;
return tok_identifier;
}
- if (isdigit(LastChar) || LastChar == '.') { // Number: [0-9.]+
+ if (isdigit(LastChar) || LastChar == '.') { // Number: [0-9.]+
std::string NumStr;
do {
NumStr += LastChar;
@@ -75,13 +89,14 @@ static int gettok() {
if (LastChar == '#') {
// Comment until end of line.
- do LastChar = getchar();
+ do
+ LastChar = getchar();
while (LastChar != EOF && LastChar != '\n' && LastChar != '\r');
-
+
if (LastChar != EOF)
return gettok();
}
-
+
// Check for end of file. Don't eat the EOF.
if (LastChar == EOF)
return tok_eof;
@@ -106,6 +121,7 @@ public:
/// NumberExprAST - Expression class for numeric literals like "1.0".
class NumberExprAST : public ExprAST {
double Val;
+
public:
NumberExprAST(double val) : Val(val) {}
virtual Value *Codegen();
@@ -114,6 +130,7 @@ public:
/// VariableExprAST - Expression class for referencing a variable, like "a".
class VariableExprAST : public ExprAST {
std::string Name;
+
public:
VariableExprAST(const std::string &name) : Name(name) {}
virtual Value *Codegen();
@@ -123,28 +140,31 @@ public:
class BinaryExprAST : public ExprAST {
char Op;
ExprAST *LHS, *RHS;
+
public:
- BinaryExprAST(char op, ExprAST *lhs, ExprAST *rhs)
- : Op(op), LHS(lhs), RHS(rhs) {}
+ BinaryExprAST(char op, ExprAST *lhs, ExprAST *rhs)
+ : Op(op), LHS(lhs), RHS(rhs) {}
virtual Value *Codegen();
};
/// CallExprAST - Expression class for function calls.
class CallExprAST : public ExprAST {
std::string Callee;
- std::vector<ExprAST*> Args;
+ std::vector<ExprAST *> Args;
+
public:
- CallExprAST(const std::string &callee, std::vector<ExprAST*> &args)
- : Callee(callee), Args(args) {}
+ CallExprAST(const std::string &callee, std::vector<ExprAST *> &args)
+ : Callee(callee), Args(args) {}
virtual Value *Codegen();
};
/// IfExprAST - Expression class for if/then/else.
class IfExprAST : public ExprAST {
ExprAST *Cond, *Then, *Else;
+
public:
IfExprAST(ExprAST *cond, ExprAST *then, ExprAST *_else)
- : Cond(cond), Then(then), Else(_else) {}
+ : Cond(cond), Then(then), Else(_else) {}
virtual Value *Codegen();
};
@@ -152,10 +172,11 @@ public:
class ForExprAST : public ExprAST {
std::string VarName;
ExprAST *Start, *End, *Step, *Body;
+
public:
ForExprAST(const std::string &varname, ExprAST *start, ExprAST *end,
ExprAST *step, ExprAST *body)
- : VarName(varname), Start(start), End(end), Step(step), Body(body) {}
+ : VarName(varname), Start(start), End(end), Step(step), Body(body) {}
virtual Value *Codegen();
};
@@ -165,10 +186,11 @@ public:
class PrototypeAST {
std::string Name;
std::vector<std::string> Args;
+
public:
PrototypeAST(const std::string &name, const std::vector<std::string> &args)
- : Name(name), Args(args) {}
-
+ : Name(name), Args(args) {}
+
Function *Codegen();
};
@@ -176,10 +198,10 @@ public:
class FunctionAST {
PrototypeAST *Proto;
ExprAST *Body;
+
public:
- FunctionAST(PrototypeAST *proto, ExprAST *body)
- : Proto(proto), Body(body) {}
-
+ FunctionAST(PrototypeAST *proto, ExprAST *body) : Proto(proto), Body(body) {}
+
Function *Codegen();
};
} // end anonymous namespace
@@ -192,9 +214,7 @@ public:
/// token the parser is looking at. getNextToken reads another token from the
/// lexer and updates CurTok with its results.
static int CurTok;
-static int getNextToken() {
- return CurTok = gettok();
-}
+static int getNextToken() { return CurTok = gettok(); }
/// BinopPrecedence - This holds the precedence for each binary operator that is
/// defined.
@@ -204,17 +224,27 @@ static std::map<char, int> BinopPrecedence;
static int GetTokPrecedence() {
if (!isascii(CurTok))
return -1;
-
+
// Make sure it's a declared binop.
int TokPrec = BinopPrecedence[CurTok];
- if (TokPrec <= 0) return -1;
+ if (TokPrec <= 0)
+ return -1;
return TokPrec;
}
/// Error* - These are little helper functions for error handling.
-ExprAST *Error(const char *Str) { fprintf(stderr, "Error: %s\n", Str);return 0;}
-PrototypeAST *ErrorP(const char *Str) { Error(Str); return 0; }
-FunctionAST *ErrorF(const char *Str) { Error(Str); return 0; }
+ExprAST *Error(const char *Str) {
+ fprintf(stderr, "Error: %s\n", Str);
+ return 0;
+}
+PrototypeAST *ErrorP(const char *Str) {
+ Error(Str);
+ return 0;
+}
+FunctionAST *ErrorF(const char *Str) {
+ Error(Str);
+ return 0;
+}
static ExprAST *ParseExpression();
@@ -223,22 +253,24 @@ static ExprAST *ParseExpression();
/// ::= identifier '(' expression* ')'
static ExprAST *ParseIdentifierExpr() {
std::string IdName = IdentifierStr;
-
- getNextToken(); // eat identifier.
-
+
+ getNextToken(); // eat identifier.
+
if (CurTok != '(') // Simple variable ref.
return new VariableExprAST(IdName);
-
+
// Call.
- getNextToken(); // eat (
- std::vector<ExprAST*> Args;
+ getNextToken(); // eat (
+ std::vector<ExprAST *> Args;
if (CurTok != ')') {
while (1) {
ExprAST *Arg = ParseExpression();
- if (!Arg) return 0;
+ if (!Arg)
+ return 0;
Args.push_back(Arg);
- if (CurTok == ')') break;
+ if (CurTok == ')')
+ break;
if (CurTok != ',')
return Error("Expected ')' or ',' in argument list");
@@ -248,7 +280,7 @@ static ExprAST *ParseIdentifierExpr() {
// Eat the ')'.
getNextToken();
-
+
return new CallExprAST(IdName, Args);
}
@@ -261,80 +293,87 @@ static ExprAST *ParseNumberExpr() {
/// parenexpr ::= '(' expression ')'
static ExprAST *ParseParenExpr() {
- getNextToken(); // eat (.
+ getNextToken(); // eat (.
ExprAST *V = ParseExpression();
- if (!V) return 0;
-
+ if (!V)
+ return 0;
+
if (CurTok != ')')
return Error("expected ')'");
- getNextToken(); // eat ).
+ getNextToken(); // eat ).
return V;
}
/// ifexpr ::= 'if' expression 'then' expression 'else' expression
static ExprAST *ParseIfExpr() {
- getNextToken(); // eat the if.
-
+ getNextToken(); // eat the if.
+
// condition.
ExprAST *Cond = ParseExpression();
- if (!Cond) return 0;
-
+ if (!Cond)
+ return 0;
+
if (CurTok != tok_then)
return Error("expected then");
- getNextToken(); // eat the then
-
+ getNextToken(); // eat the then
+
ExprAST *Then = ParseExpression();
- if (Then == 0) return 0;
-
+ if (Then == 0)
+ return 0;
+
if (CurTok != tok_else)
return Error("expected else");
-
+
getNextToken();
-
+
ExprAST *Else = ParseExpression();
- if (!Else) return 0;
-
+ if (!Else)
+ return 0;
+
return new IfExprAST(Cond, Then, Else);
}
/// forexpr ::= 'for' identifier '=' expr ',' expr (',' expr)? 'in' expression
static ExprAST *ParseForExpr() {
- getNextToken(); // eat the for.
+ getNextToken(); // eat the for.
if (CurTok != tok_identifier)
return Error("expected identifier after for");
-
+
std::string IdName = IdentifierStr;
- getNextToken(); // eat identifier.
-
+ getNextToken(); // eat identifier.
+
if (CurTok != '=')
return Error("expected '=' after for");
- getNextToken(); // eat '='.
-
-
+ getNextToken(); // eat '='.
+
ExprAST *Start = ParseExpression();
- if (Start == 0) return 0;
+ if (Start == 0)
+ return 0;
if (CurTok != ',')
return Error("expected ',' after for start value");
getNextToken();
-
+
ExprAST *End = ParseExpression();
- if (End == 0) return 0;
-
+ if (End == 0)
+ return 0;
+
// The step value is optional.
ExprAST *Step = 0;
if (CurTok == ',') {
getNextToken();
Step = ParseExpression();
- if (Step == 0) return 0;
+ if (Step == 0)
+ return 0;
}
-
+
if (CurTok != tok_in)
return Error("expected 'in' after for");
- getNextToken(); // eat 'in'.
-
+ getNextToken(); // eat 'in'.
+
ExprAST *Body = ParseExpression();
- if (Body == 0) return 0;
+ if (Body == 0)
+ return 0;
return new ForExprAST(IdName, Start, End, Step, Body);
}
@@ -347,12 +386,18 @@ static ExprAST *ParseForExpr() {
/// ::= forexpr
static ExprAST *ParsePrimary() {
switch (CurTok) {
- default: return Error("unknown token when expecting an expression");
- case tok_identifier: return ParseIdentifierExpr();
- case tok_number: return ParseNumberExpr();
- case '(': return ParseParenExpr();
- case tok_if: return ParseIfExpr();
- case tok_for: return ParseForExpr();
+ default:
+ return Error("unknown token when expecting an expression");
+ case tok_identifier:
+ return ParseIdentifierExpr();
+ case tok_number:
+ return ParseNumberExpr();
+ case '(':
+ return ParseParenExpr();
+ case tok_if:
+ return ParseIfExpr();
+ case tok_for:
+ return ParseForExpr();
}
}
@@ -362,28 +407,30 @@ static ExprAST *ParseBinOpRHS(int ExprPrec, ExprAST *LHS) {
// If this is a binop, find its precedence.
while (1) {
int TokPrec = GetTokPrecedence();
-
+
// If this is a binop that binds at least as tightly as the current binop,
// consume it, otherwise we are done.
if (TokPrec < ExprPrec)
return LHS;
-
+
// Okay, we know this is a binop.
int BinOp = CurTok;
- getNextToken(); // eat binop
-
+ getNextToken(); // eat binop
+
// Parse the primary expression after the binary operator.
ExprAST *RHS = ParsePrimary();
- if (!RHS) return 0;
-
+ if (!RHS)
+ return 0;
+
// If BinOp binds less tightly with RHS than the operator after RHS, let
// the pending operator take RHS as its LHS.
int NextPrec = GetTokPrecedence();
if (TokPrec < NextPrec) {
- RHS = ParseBinOpRHS(TokPrec+1, RHS);
- if (RHS == 0) return 0;
+ RHS = ParseBinOpRHS(TokPrec + 1, RHS);
+ if (RHS == 0)
+ return 0;
}
-
+
// Merge LHS/RHS.
LHS = new BinaryExprAST(BinOp, LHS, RHS);
}
@@ -394,8 +441,9 @@ static ExprAST *ParseBinOpRHS(int ExprPrec, ExprAST *LHS) {
///
static ExprAST *ParseExpression() {
ExprAST *LHS = ParsePrimary();
- if (!LHS) return 0;
-
+ if (!LHS)
+ return 0;
+
return ParseBinOpRHS(0, LHS);
}
@@ -407,27 +455,28 @@ static PrototypeAST *ParsePrototype() {
std::string FnName = IdentifierStr;
getNextToken();
-
+
if (CurTok != '(')
return ErrorP("Expected '(' in prototype");
-
+
std::vector<std::string> ArgNames;
while (getNextToken() == tok_identifier)
ArgNames.push_back(IdentifierStr);
if (CurTok != ')')
return ErrorP("Expected ')' in prototype");
-
+
// success.
- getNextToken(); // eat ')'.
-
+ getNextToken(); // eat ')'.
+
return new PrototypeAST(FnName, ArgNames);
}
/// definition ::= 'def' prototype expression
static FunctionAST *ParseDefinition() {
- getNextToken(); // eat def.
+ getNextToken(); // eat def.
PrototypeAST *Proto = ParsePrototype();
- if (Proto == 0) return 0;
+ if (Proto == 0)
+ return 0;
if (ExprAST *E = ParseExpression())
return new FunctionAST(Proto, E);
@@ -446,7 +495,7 @@ static FunctionAST *ParseTopLevelExpr() {
/// external ::= 'extern' prototype
static PrototypeAST *ParseExtern() {
- getNextToken(); // eat extern.
+ getNextToken(); // eat extern.
return ParsePrototype();
}
@@ -456,10 +505,13 @@ static PrototypeAST *ParseExtern() {
static Module *TheModule;
static IRBuilder<> Builder(getGlobalContext());
-static std::map<std::string, Value*> NamedValues;
-static FunctionPassManager *TheFPM;
+static std::map<std::string, Value *> NamedValues;
+static legacy::FunctionPassManager *TheFPM;
-Value *ErrorV(const char *Str) { Error(Str); return 0; }
+Value *ErrorV(const char *Str) {
+ Error(Str);
+ return 0;
+}
Value *NumberExprAST::Codegen() {
return ConstantFP::get(getGlobalContext(), APFloat(Val));
@@ -474,18 +526,23 @@ Value *VariableExprAST::Codegen() {
Value *BinaryExprAST::Codegen() {
Value *L = LHS->Codegen();
Value *R = RHS->Codegen();
- if (L == 0 || R == 0) return 0;
-
+ if (L == 0 || R == 0)
+ return 0;
+
switch (Op) {
- case '+': return Builder.CreateFAdd(L, R, "addtmp");
- case '-': return Builder.CreateFSub(L, R, "subtmp");
- case '*': return Builder.CreateFMul(L, R, "multmp");
+ case '+':
+ return Builder.CreateFAdd(L, R, "addtmp");
+ case '-':
+ return Builder.CreateFSub(L, R, "subtmp");
+ case '*':
+ return Builder.CreateFMul(L, R, "multmp");
case '<':
L = Builder.CreateFCmpULT(L, R, "cmptmp");
// Convert bool 0/1 to double 0.0 or 1.0
return Builder.CreateUIToFP(L, Type::getDoubleTy(getGlobalContext()),
"booltmp");
- default: return ErrorV("invalid binary operator");
+ default:
+ return ErrorV("invalid binary operator");
}
}
@@ -494,66 +551,70 @@ Value *CallExprAST::Codegen() {
Function *CalleeF = TheModule->getFunction(Callee);
if (CalleeF == 0)
return ErrorV("Unknown function referenced");
-
+
// If argument mismatch error.
if (CalleeF->arg_size() != Args.size())
return ErrorV("Incorrect # arguments passed");
- std::vector<Value*> ArgsV;
+ std::vector<Value *> ArgsV;
for (unsigned i = 0, e = Args.size(); i != e; ++i) {
ArgsV.push_back(Args[i]->Codegen());
- if (ArgsV.back() == 0) return 0;
+ if (ArgsV.back() == 0)
+ return 0;
}
-
+
return Builder.CreateCall(CalleeF, ArgsV, "calltmp");
}
Value *IfExprAST::Codegen() {
Value *CondV = Cond->Codegen();
- if (CondV == 0) return 0;
-
+ if (CondV == 0)
+ return 0;
+
// Convert condition to a bool by comparing equal to 0.0.
- CondV = Builder.CreateFCmpONE(CondV,
- ConstantFP::get(getGlobalContext(), APFloat(0.0)),
- "ifcond");
-
+ CondV = Builder.CreateFCmpONE(
+ CondV, ConstantFP::get(getGlobalContext(), APFloat(0.0)), "ifcond");
+
Function *TheFunction = Builder.GetInsertBlock()->getParent();
-
+
// Create blocks for the then and else cases. Insert the 'then' block at the
// end of the function.
- BasicBlock *ThenBB = BasicBlock::Create(getGlobalContext(), "then", TheFunction);
+ BasicBlock *ThenBB =
+ BasicBlock::Create(getGlobalContext(), "then", TheFunction);
BasicBlock *ElseBB = BasicBlock::Create(getGlobalContext(), "else");
BasicBlock *MergeBB = BasicBlock::Create(getGlobalContext(), "ifcont");
-
+
Builder.CreateCondBr(CondV, ThenBB, ElseBB);
-
+
// Emit then value.
Builder.SetInsertPoint(ThenBB);
-
+
Value *ThenV = Then->Codegen();
- if (ThenV == 0) return 0;
-
+ if (ThenV == 0)
+ return 0;
+
Builder.CreateBr(MergeBB);
// Codegen of 'Then' can change the current block, update ThenBB for the PHI.
ThenBB = Builder.GetInsertBlock();
-
+
// Emit else block.
TheFunction->getBasicBlockList().push_back(ElseBB);
Builder.SetInsertPoint(ElseBB);
-
+
Value *ElseV = Else->Codegen();
- if (ElseV == 0) return 0;
-
+ if (ElseV == 0)
+ return 0;
+
Builder.CreateBr(MergeBB);
// Codegen of 'Else' can change the current block, update ElseBB for the PHI.
ElseBB = Builder.GetInsertBlock();
-
+
// Emit merge block.
TheFunction->getBasicBlockList().push_back(MergeBB);
Builder.SetInsertPoint(MergeBB);
- PHINode *PN = Builder.CreatePHI(Type::getDoubleTy(getGlobalContext()), 2,
- "iftmp");
-
+ PHINode *PN =
+ Builder.CreatePHI(Type::getDoubleTy(getGlobalContext()), 2, "iftmp");
+
PN->addIncoming(ThenV, ThenBB);
PN->addIncoming(ElseV, ElseBB);
return PN;
@@ -564,7 +625,7 @@ Value *ForExprAST::Codegen() {
// ...
// start = startexpr
// goto loop
- // loop:
+ // loop:
// variable = phi [start, loopheader], [nextvariable, loopend]
// ...
// bodyexpr
@@ -575,136 +636,141 @@ Value *ForExprAST::Codegen() {
// endcond = endexpr
// br endcond, loop, endloop
// outloop:
-
+
// Emit the start code first, without 'variable' in scope.
Value *StartVal = Start->Codegen();
- if (StartVal == 0) return 0;
-
+ if (StartVal == 0)
+ return 0;
+
// Make the new basic block for the loop header, inserting after current
// block.
Function *TheFunction = Builder.GetInsertBlock()->getParent();
BasicBlock *PreheaderBB = Builder.GetInsertBlock();
- BasicBlock *LoopBB = BasicBlock::Create(getGlobalContext(), "loop", TheFunction);
-
+ BasicBlock *LoopBB =
+ BasicBlock::Create(getGlobalContext(), "loop", TheFunction);
+
// Insert an explicit fall through from the current block to the LoopBB.
Builder.CreateBr(LoopBB);
// Start insertion in LoopBB.
Builder.SetInsertPoint(LoopBB);
-
+
// Start the PHI node with an entry for Start.
- PHINode *Variable = Builder.CreatePHI(Type::getDoubleTy(getGlobalContext()), 2, VarName.c_str());
+ PHINode *Variable = Builder.CreatePHI(Type::getDoubleTy(getGlobalContext()),
+ 2, VarName.c_str());
Variable->addIncoming(StartVal, PreheaderBB);
-
+
// Within the loop, the variable is defined equal to the PHI node. If it
// shadows an existing variable, we have to restore it, so save it now.
Value *OldVal = NamedValues[VarName];
NamedValues[VarName] = Variable;
-
+
// Emit the body of the loop. This, like any other expr, can change the
// current BB. Note that we ignore the value computed by the body, but don't
// allow an error.
if (Body->Codegen() == 0)
return 0;
-
+
// Emit the step value.
Value *StepVal;
if (Step) {
StepVal = Step->Codegen();
- if (StepVal == 0) return 0;
+ if (StepVal == 0)
+ return 0;
} else {
// If not specified, use 1.0.
StepVal = ConstantFP::get(getGlobalContext(), APFloat(1.0));
}
-
+
Value *NextVar = Builder.CreateFAdd(Variable, StepVal, "nextvar");
// Compute the end condition.
Value *EndCond = End->Codegen();
- if (EndCond == 0) return EndCond;
-
+ if (EndCond == 0)
+ return EndCond;
+
// Convert condition to a bool by comparing equal to 0.0.
- EndCond = Builder.CreateFCmpONE(EndCond,
- ConstantFP::get(getGlobalContext(), APFloat(0.0)),
- "loopcond");
-
+ EndCond = Builder.CreateFCmpONE(
+ EndCond, ConstantFP::get(getGlobalContext(), APFloat(0.0)), "loopcond");
+
// Create the "after loop" block and insert it.
BasicBlock *LoopEndBB = Builder.GetInsertBlock();
- BasicBlock *AfterBB = BasicBlock::Create(getGlobalContext(), "afterloop", TheFunction);
-
+ BasicBlock *AfterBB =
+ BasicBlock::Create(getGlobalContext(), "afterloop", TheFunction);
+
// Insert the conditional branch into the end of LoopEndBB.
Builder.CreateCondBr(EndCond, LoopBB, AfterBB);
-
+
// Any new code will be inserted in AfterBB.
Builder.SetInsertPoint(AfterBB);
-
+
// Add a new entry to the PHI node for the backedge.
Variable->addIncoming(NextVar, LoopEndBB);
-
+
// Restore the unshadowed variable.
if (OldVal)
NamedValues[VarName] = OldVal;
else
NamedValues.erase(VarName);
-
// for expr always returns 0.0.
return Constant::getNullValue(Type::getDoubleTy(getGlobalContext()));
}
Function *PrototypeAST::Codegen() {
// Make the function type: double(double,double) etc.
- std::vector<Type*> Doubles(Args.size(),
- Type::getDoubleTy(getGlobalContext()));
- FunctionType *FT = FunctionType::get(Type::getDoubleTy(getGlobalContext()),
- Doubles, false);
-
- Function *F = Function::Create(FT, Function::ExternalLinkage, Name, TheModule);
-
+ std::vector<Type *> Doubles(Args.size(),
+ Type::getDoubleTy(getGlobalContext()));
+ FunctionType *FT =
+ FunctionType::get(Type::getDoubleTy(getGlobalContext()), Doubles, false);
+
+ Function *F =
+ Function::Create(FT, Function::ExternalLinkage, Name, TheModule);
+
// If F conflicted, there was already something named 'Name'. If it has a
// body, don't allow redefinition or reextern.
if (F->getName() != Name) {
// Delete the one we just made and get the existing one.
F->eraseFromParent();
F = TheModule->getFunction(Name);
-
+
// If F already has a body, reject this.
if (!F->empty()) {
ErrorF("redefinition of function");
return 0;
}
-
+
// If F took a different number of args, reject.
if (F->arg_size() != Args.size()) {
ErrorF("redefinition of function with different # args");
return 0;
}
}
-
+
// Set names for all arguments.
unsigned Idx = 0;
for (Function::arg_iterator AI = F->arg_begin(); Idx != Args.size();
++AI, ++Idx) {
AI->setName(Args[Idx]);
-
+
// Add arguments to variable symbol table.
NamedValues[Args[Idx]] = AI;
}
-
+
return F;
}
Function *FunctionAST::Codegen() {
NamedValues.clear();
-
+
Function *TheFunction = Proto->Codegen();
if (TheFunction == 0)
return 0;
-
+
// Create a new basic block to start insertion into.
BasicBlock *BB = BasicBlock::Create(getGlobalContext(), "entry", TheFunction);
Builder.SetInsertPoint(BB);
-
+
if (Value *RetVal = Body->Codegen()) {
// Finish off the function.
Builder.CreateRet(RetVal);
@@ -714,10 +780,10 @@ Function *FunctionAST::Codegen() {
// Optimize the function.
TheFPM->run(*TheFunction);
-
+
return TheFunction;
}
-
+
// Error reading body, remove function.
TheFunction->eraseFromParent();
return 0;
@@ -757,9 +823,10 @@ static void HandleTopLevelExpression() {
// Evaluate a top-level expression into an anonymous function.
if (FunctionAST *F = ParseTopLevelExpr()) {
if (Function *LF = F->Codegen()) {
+ TheExecutionEngine->finalizeObject();
// JIT the function, returning a function pointer.
void *FPtr = TheExecutionEngine->getPointerToFunction(LF);
-
+
// Cast it to the right type (takes no arguments, returns a double) so we
// can call it as a native function.
double (*FP)() = (double (*)())(intptr_t)FPtr;
@@ -776,11 +843,20 @@ static void MainLoop() {
while (1) {
fprintf(stderr, "ready> ");
switch (CurTok) {
- case tok_eof: return;
- case ';': getNextToken(); break; // ignore top-level semicolons.
- case tok_def: HandleDefinition(); break;
- case tok_extern: HandleExtern(); break;
- default: HandleTopLevelExpression(); break;
+ case tok_eof:
+ return;
+ case ';':
+ getNextToken();
+ break; // ignore top-level semicolons.
+ case tok_def:
+ HandleDefinition();
+ break;
+ case tok_extern:
+ HandleExtern();
+ break;
+ default:
+ HandleTopLevelExpression();
+ break;
}
}
}
@@ -790,8 +866,7 @@ static void MainLoop() {
//===----------------------------------------------------------------------===//
/// putchard - putchar that takes a double and returns 0.
-extern "C"
-double putchard(double X) {
+extern "C" double putchard(double X) {
putchar((char)X);
return 0;
}
@@ -802,6 +877,8 @@ double putchard(double X) {
int main() {
InitializeNativeTarget();
+ InitializeNativeTargetAsmPrinter();
+ InitializeNativeTargetAsmParser();
LLVMContext &Context = getGlobalContext();
// Install standard binary operators.
@@ -809,7 +886,7 @@ int main() {
BinopPrecedence['<'] = 10;
BinopPrecedence['+'] = 20;
BinopPrecedence['-'] = 20;
- BinopPrecedence['*'] = 40; // highest.
+ BinopPrecedence['*'] = 40; // highest.
// Prime the first token.
fprintf(stderr, "ready> ");
@@ -822,13 +899,16 @@ int main() {
// Create the JIT. This takes ownership of the module.
std::string ErrStr;
TheExecutionEngine =
- EngineBuilder(std::move(Owner)).setErrorStr(&ErrStr).create();
+ EngineBuilder(std::move(Owner))
+ .setErrorStr(&ErrStr)
+ .setMCJITMemoryManager(llvm::make_unique<SectionMemoryManager>())
+ .create();
if (!TheExecutionEngine) {
fprintf(stderr, "Could not create ExecutionEngine: %s\n", ErrStr.c_str());
exit(1);
}
- FunctionPassManager OurFPM(TheModule);
+ legacy::FunctionPassManager OurFPM(TheModule);
// Set up the optimizer pipeline. Start with registering info about how the
// target lays out data structures.
diff --git a/examples/Kaleidoscope/Chapter6/CMakeLists.txt b/examples/Kaleidoscope/Chapter6/CMakeLists.txt
index d36f030..55b9a78 100644
--- a/examples/Kaleidoscope/Chapter6/CMakeLists.txt
+++ b/examples/Kaleidoscope/Chapter6/CMakeLists.txt
@@ -3,12 +3,12 @@ set(LLVM_LINK_COMPONENTS
Core
ExecutionEngine
InstCombine
- MC
+ MCJIT
ScalarOpts
Support
- nativecodegen
+ native
)
-add_llvm_example(Kaleidoscope-Ch6
+add_kaleidoscope_chapter(Kaleidoscope-Ch6
toy.cpp
)
diff --git a/examples/Kaleidoscope/Chapter6/toy.cpp b/examples/Kaleidoscope/Chapter6/toy.cpp
index 06da9ac..8131aa1 100644
--- a/examples/Kaleidoscope/Chapter6/toy.cpp
+++ b/examples/Kaleidoscope/Chapter6/toy.cpp
@@ -1,12 +1,14 @@
#include "llvm/Analysis/Passes.h"
#include "llvm/ExecutionEngine/ExecutionEngine.h"
+#include "llvm/ExecutionEngine/MCJIT.h"
+#include "llvm/ExecutionEngine/SectionMemoryManager.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/LegacyPassManager.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Verifier.h"
-#include "llvm/PassManager.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Transforms/Scalar.h"
#include <cctype>
@@ -26,21 +28,27 @@ enum Token {
tok_eof = -1,
// commands
- tok_def = -2, tok_extern = -3,
+ tok_def = -2,
+ tok_extern = -3,
// primary
- tok_identifier = -4, tok_number = -5,
-
+ tok_identifier = -4,
+ tok_number = -5,
+
// control
- tok_if = -6, tok_then = -7, tok_else = -8,
- tok_for = -9, tok_in = -10,
-
+ tok_if = -6,
+ tok_then = -7,
+ tok_else = -8,
+ tok_for = -9,
+ tok_in = -10,
+
// operators
- tok_binary = -11, tok_unary = -12
+ tok_binary = -11,
+ tok_unary = -12
};
-static std::string IdentifierStr; // Filled in if tok_identifier
-static double NumVal; // Filled in if tok_number
+static std::string IdentifierStr; // Filled in if tok_identifier
+static double NumVal; // Filled in if tok_number
/// gettok - Return the next token from standard input.
static int gettok() {
@@ -55,19 +63,28 @@ static int gettok() {
while (isalnum((LastChar = getchar())))
IdentifierStr += LastChar;
- if (IdentifierStr == "def") return tok_def;
- if (IdentifierStr == "extern") return tok_extern;
- if (IdentifierStr == "if") return tok_if;
- if (IdentifierStr == "then") return tok_then;
- if (IdentifierStr == "else") return tok_else;
- if (IdentifierStr == "for") return tok_for;
- if (IdentifierStr == "in") return tok_in;
- if (IdentifierStr == "binary") return tok_binary;
- if (IdentifierStr == "unary") return tok_unary;
+ if (IdentifierStr == "def")
+ return tok_def;
+ if (IdentifierStr == "extern")
+ return tok_extern;
+ if (IdentifierStr == "if")
+ return tok_if;
+ if (IdentifierStr == "then")
+ return tok_then;
+ if (IdentifierStr == "else")
+ return tok_else;
+ if (IdentifierStr == "for")
+ return tok_for;
+ if (IdentifierStr == "in")
+ return tok_in;
+ if (IdentifierStr == "binary")
+ return tok_binary;
+ if (IdentifierStr == "unary")
+ return tok_unary;
return tok_identifier;
}
- if (isdigit(LastChar) || LastChar == '.') { // Number: [0-9.]+
+ if (isdigit(LastChar) || LastChar == '.') { // Number: [0-9.]+
std::string NumStr;
do {
NumStr += LastChar;
@@ -80,13 +97,14 @@ static int gettok() {
if (LastChar == '#') {
// Comment until end of line.
- do LastChar = getchar();
+ do
+ LastChar = getchar();
while (LastChar != EOF && LastChar != '\n' && LastChar != '\r');
-
+
if (LastChar != EOF)
return gettok();
}
-
+
// Check for end of file. Don't eat the EOF.
if (LastChar == EOF)
return tok_eof;
@@ -111,6 +129,7 @@ public:
/// NumberExprAST - Expression class for numeric literals like "1.0".
class NumberExprAST : public ExprAST {
double Val;
+
public:
NumberExprAST(double val) : Val(val) {}
virtual Value *Codegen();
@@ -119,6 +138,7 @@ public:
/// VariableExprAST - Expression class for referencing a variable, like "a".
class VariableExprAST : public ExprAST {
std::string Name;
+
public:
VariableExprAST(const std::string &name) : Name(name) {}
virtual Value *Codegen();
@@ -128,9 +148,10 @@ public:
class UnaryExprAST : public ExprAST {
char Opcode;
ExprAST *Operand;
+
public:
- UnaryExprAST(char opcode, ExprAST *operand)
- : Opcode(opcode), Operand(operand) {}
+ UnaryExprAST(char opcode, ExprAST *operand)
+ : Opcode(opcode), Operand(operand) {}
virtual Value *Codegen();
};
@@ -138,28 +159,31 @@ public:
class BinaryExprAST : public ExprAST {
char Op;
ExprAST *LHS, *RHS;
+
public:
- BinaryExprAST(char op, ExprAST *lhs, ExprAST *rhs)
- : Op(op), LHS(lhs), RHS(rhs) {}
+ BinaryExprAST(char op, ExprAST *lhs, ExprAST *rhs)
+ : Op(op), LHS(lhs), RHS(rhs) {}
virtual Value *Codegen();
};
/// CallExprAST - Expression class for function calls.
class CallExprAST : public ExprAST {
std::string Callee;
- std::vector<ExprAST*> Args;
+ std::vector<ExprAST *> Args;
+
public:
- CallExprAST(const std::string &callee, std::vector<ExprAST*> &args)
- : Callee(callee), Args(args) {}
+ CallExprAST(const std::string &callee, std::vector<ExprAST *> &args)
+ : Callee(callee), Args(args) {}
virtual Value *Codegen();
};
/// IfExprAST - Expression class for if/then/else.
class IfExprAST : public ExprAST {
ExprAST *Cond, *Then, *Else;
+
public:
IfExprAST(ExprAST *cond, ExprAST *then, ExprAST *_else)
- : Cond(cond), Then(then), Else(_else) {}
+ : Cond(cond), Then(then), Else(_else) {}
virtual Value *Codegen();
};
@@ -167,10 +191,11 @@ public:
class ForExprAST : public ExprAST {
std::string VarName;
ExprAST *Start, *End, *Step, *Body;
+
public:
ForExprAST(const std::string &varname, ExprAST *start, ExprAST *end,
ExprAST *step, ExprAST *body)
- : VarName(varname), Start(start), End(end), Step(step), Body(body) {}
+ : VarName(varname), Start(start), End(end), Step(step), Body(body) {}
virtual Value *Codegen();
};
@@ -181,22 +206,22 @@ class PrototypeAST {
std::string Name;
std::vector<std::string> Args;
bool isOperator;
- unsigned Precedence; // Precedence if a binary op.
+ unsigned Precedence; // Precedence if a binary op.
public:
PrototypeAST(const std::string &name, const std::vector<std::string> &args,
bool isoperator = false, unsigned prec = 0)
- : Name(name), Args(args), isOperator(isoperator), Precedence(prec) {}
-
+ : Name(name), Args(args), isOperator(isoperator), Precedence(prec) {}
+
bool isUnaryOp() const { return isOperator && Args.size() == 1; }
bool isBinaryOp() const { return isOperator && Args.size() == 2; }
-
+
char getOperatorName() const {
assert(isUnaryOp() || isBinaryOp());
- return Name[Name.size()-1];
+ return Name[Name.size() - 1];
}
-
+
unsigned getBinaryPrecedence() const { return Precedence; }
-
+
Function *Codegen();
};
@@ -204,10 +229,10 @@ public:
class FunctionAST {
PrototypeAST *Proto;
ExprAST *Body;
+
public:
- FunctionAST(PrototypeAST *proto, ExprAST *body)
- : Proto(proto), Body(body) {}
-
+ FunctionAST(PrototypeAST *proto, ExprAST *body) : Proto(proto), Body(body) {}
+
Function *Codegen();
};
} // end anonymous namespace
@@ -220,9 +245,7 @@ public:
/// token the parser is looking at. getNextToken reads another token from the
/// lexer and updates CurTok with its results.
static int CurTok;
-static int getNextToken() {
- return CurTok = gettok();
-}
+static int getNextToken() { return CurTok = gettok(); }
/// BinopPrecedence - This holds the precedence for each binary operator that is
/// defined.
@@ -232,17 +255,27 @@ static std::map<char, int> BinopPrecedence;
static int GetTokPrecedence() {
if (!isascii(CurTok))
return -1;
-
+
// Make sure it's a declared binop.
int TokPrec = BinopPrecedence[CurTok];
- if (TokPrec <= 0) return -1;
+ if (TokPrec <= 0)
+ return -1;
return TokPrec;
}
/// Error* - These are little helper functions for error handling.
-ExprAST *Error(const char *Str) { fprintf(stderr, "Error: %s\n", Str);return 0;}
-PrototypeAST *ErrorP(const char *Str) { Error(Str); return 0; }
-FunctionAST *ErrorF(const char *Str) { Error(Str); return 0; }
+ExprAST *Error(const char *Str) {
+ fprintf(stderr, "Error: %s\n", Str);
+ return 0;
+}
+PrototypeAST *ErrorP(const char *Str) {
+ Error(Str);
+ return 0;
+}
+FunctionAST *ErrorF(const char *Str) {
+ Error(Str);
+ return 0;
+}
static ExprAST *ParseExpression();
@@ -251,22 +284,24 @@ static ExprAST *ParseExpression();
/// ::= identifier '(' expression* ')'
static ExprAST *ParseIdentifierExpr() {
std::string IdName = IdentifierStr;
-
- getNextToken(); // eat identifier.
-
+
+ getNextToken(); // eat identifier.
+
if (CurTok != '(') // Simple variable ref.
return new VariableExprAST(IdName);
-
+
// Call.
- getNextToken(); // eat (
- std::vector<ExprAST*> Args;
+ getNextToken(); // eat (
+ std::vector<ExprAST *> Args;
if (CurTok != ')') {
while (1) {
ExprAST *Arg = ParseExpression();
- if (!Arg) return 0;
+ if (!Arg)
+ return 0;
Args.push_back(Arg);
- if (CurTok == ')') break;
+ if (CurTok == ')')
+ break;
if (CurTok != ',')
return Error("Expected ')' or ',' in argument list");
@@ -276,7 +311,7 @@ static ExprAST *ParseIdentifierExpr() {
// Eat the ')'.
getNextToken();
-
+
return new CallExprAST(IdName, Args);
}
@@ -289,80 +324,87 @@ static ExprAST *ParseNumberExpr() {
/// parenexpr ::= '(' expression ')'
static ExprAST *ParseParenExpr() {
- getNextToken(); // eat (.
+ getNextToken(); // eat (.
ExprAST *V = ParseExpression();
- if (!V) return 0;
-
+ if (!V)
+ return 0;
+
if (CurTok != ')')
return Error("expected ')'");
- getNextToken(); // eat ).
+ getNextToken(); // eat ).
return V;
}
/// ifexpr ::= 'if' expression 'then' expression 'else' expression
static ExprAST *ParseIfExpr() {
- getNextToken(); // eat the if.
-
+ getNextToken(); // eat the if.
+
// condition.
ExprAST *Cond = ParseExpression();
- if (!Cond) return 0;
-
+ if (!Cond)
+ return 0;
+
if (CurTok != tok_then)
return Error("expected then");
- getNextToken(); // eat the then
-
+ getNextToken(); // eat the then
+
ExprAST *Then = ParseExpression();
- if (Then == 0) return 0;
-
+ if (Then == 0)
+ return 0;
+
if (CurTok != tok_else)
return Error("expected else");
-
+
getNextToken();
-
+
ExprAST *Else = ParseExpression();
- if (!Else) return 0;
-
+ if (!Else)
+ return 0;
+
return new IfExprAST(Cond, Then, Else);
}
/// forexpr ::= 'for' identifier '=' expr ',' expr (',' expr)? 'in' expression
static ExprAST *ParseForExpr() {
- getNextToken(); // eat the for.
+ getNextToken(); // eat the for.
if (CurTok != tok_identifier)
return Error("expected identifier after for");
-
+
std::string IdName = IdentifierStr;
- getNextToken(); // eat identifier.
-
+ getNextToken(); // eat identifier.
+
if (CurTok != '=')
return Error("expected '=' after for");
- getNextToken(); // eat '='.
-
-
+ getNextToken(); // eat '='.
+
ExprAST *Start = ParseExpression();
- if (Start == 0) return 0;
+ if (Start == 0)
+ return 0;
if (CurTok != ',')
return Error("expected ',' after for start value");
getNextToken();
-
+
ExprAST *End = ParseExpression();
- if (End == 0) return 0;
-
+ if (End == 0)
+ return 0;
+
// The step value is optional.
ExprAST *Step = 0;
if (CurTok == ',') {
getNextToken();
Step = ParseExpression();
- if (Step == 0) return 0;
+ if (Step == 0)
+ return 0;
}
-
+
if (CurTok != tok_in)
return Error("expected 'in' after for");
- getNextToken(); // eat 'in'.
-
+ getNextToken(); // eat 'in'.
+
ExprAST *Body = ParseExpression();
- if (Body == 0) return 0;
+ if (Body == 0)
+ return 0;
return new ForExprAST(IdName, Start, End, Step, Body);
}
@@ -375,12 +417,18 @@ static ExprAST *ParseForExpr() {
/// ::= forexpr
static ExprAST *ParsePrimary() {
switch (CurTok) {
- default: return Error("unknown token when expecting an expression");
- case tok_identifier: return ParseIdentifierExpr();
- case tok_number: return ParseNumberExpr();
- case '(': return ParseParenExpr();
- case tok_if: return ParseIfExpr();
- case tok_for: return ParseForExpr();
+ default:
+ return Error("unknown token when expecting an expression");
+ case tok_identifier:
+ return ParseIdentifierExpr();
+ case tok_number:
+ return ParseNumberExpr();
+ case '(':
+ return ParseParenExpr();
+ case tok_if:
+ return ParseIfExpr();
+ case tok_for:
+ return ParseForExpr();
}
}
@@ -391,7 +439,7 @@ static ExprAST *ParseUnary() {
// If the current token is not an operator, it must be a primary expr.
if (!isascii(CurTok) || CurTok == '(' || CurTok == ',')
return ParsePrimary();
-
+
// If this is a unary operator, read it.
int Opc = CurTok;
getNextToken();
@@ -406,28 +454,30 @@ static ExprAST *ParseBinOpRHS(int ExprPrec, ExprAST *LHS) {
// If this is a binop, find its precedence.
while (1) {
int TokPrec = GetTokPrecedence();
-
+
// If this is a binop that binds at least as tightly as the current binop,
// consume it, otherwise we are done.
if (TokPrec < ExprPrec)
return LHS;
-
+
// Okay, we know this is a binop.
int BinOp = CurTok;
- getNextToken(); // eat binop
-
+ getNextToken(); // eat binop
+
// Parse the unary expression after the binary operator.
ExprAST *RHS = ParseUnary();
- if (!RHS) return 0;
-
+ if (!RHS)
+ return 0;
+
// If BinOp binds less tightly with RHS than the operator after RHS, let
// the pending operator take RHS as its LHS.
int NextPrec = GetTokPrecedence();
if (TokPrec < NextPrec) {
- RHS = ParseBinOpRHS(TokPrec+1, RHS);
- if (RHS == 0) return 0;
+ RHS = ParseBinOpRHS(TokPrec + 1, RHS);
+ if (RHS == 0)
+ return 0;
}
-
+
// Merge LHS/RHS.
LHS = new BinaryExprAST(BinOp, LHS, RHS);
}
@@ -438,8 +488,9 @@ static ExprAST *ParseBinOpRHS(int ExprPrec, ExprAST *LHS) {
///
static ExprAST *ParseExpression() {
ExprAST *LHS = ParseUnary();
- if (!LHS) return 0;
-
+ if (!LHS)
+ return 0;
+
return ParseBinOpRHS(0, LHS);
}
@@ -449,10 +500,10 @@ static ExprAST *ParseExpression() {
/// ::= unary LETTER (id)
static PrototypeAST *ParsePrototype() {
std::string FnName;
-
+
unsigned Kind = 0; // 0 = identifier, 1 = unary, 2 = binary.
unsigned BinaryPrecedence = 30;
-
+
switch (CurTok) {
default:
return ErrorP("Expected function name in prototype");
@@ -478,7 +529,7 @@ static PrototypeAST *ParsePrototype() {
FnName += (char)CurTok;
Kind = 2;
getNextToken();
-
+
// Read the precedence if present.
if (CurTok == tok_number) {
if (NumVal < 1 || NumVal > 100)
@@ -488,31 +539,32 @@ static PrototypeAST *ParsePrototype() {
}
break;
}
-
+
if (CurTok != '(')
return ErrorP("Expected '(' in prototype");
-
+
std::vector<std::string> ArgNames;
while (getNextToken() == tok_identifier)
ArgNames.push_back(IdentifierStr);
if (CurTok != ')')
return ErrorP("Expected ')' in prototype");
-
+
// success.
- getNextToken(); // eat ')'.
-
+ getNextToken(); // eat ')'.
+
// Verify right number of names for operator.
if (Kind && ArgNames.size() != Kind)
return ErrorP("Invalid number of operands for operator");
-
+
return new PrototypeAST(FnName, ArgNames, Kind != 0, BinaryPrecedence);
}
/// definition ::= 'def' prototype expression
static FunctionAST *ParseDefinition() {
- getNextToken(); // eat def.
+ getNextToken(); // eat def.
PrototypeAST *Proto = ParsePrototype();
- if (Proto == 0) return 0;
+ if (Proto == 0)
+ return 0;
if (ExprAST *E = ParseExpression())
return new FunctionAST(Proto, E);
@@ -531,7 +583,7 @@ static FunctionAST *ParseTopLevelExpr() {
/// external ::= 'extern' prototype
static PrototypeAST *ParseExtern() {
- getNextToken(); // eat extern.
+ getNextToken(); // eat extern.
return ParsePrototype();
}
@@ -541,10 +593,13 @@ static PrototypeAST *ParseExtern() {
static Module *TheModule;
static IRBuilder<> Builder(getGlobalContext());
-static std::map<std::string, Value*> NamedValues;
-static FunctionPassManager *TheFPM;
+static std::map<std::string, Value *> NamedValues;
+static legacy::FunctionPassManager *TheFPM;
-Value *ErrorV(const char *Str) { Error(Str); return 0; }
+Value *ErrorV(const char *Str) {
+ Error(Str);
+ return 0;
+}
Value *NumberExprAST::Codegen() {
return ConstantFP::get(getGlobalContext(), APFloat(Val));
@@ -558,37 +613,43 @@ Value *VariableExprAST::Codegen() {
Value *UnaryExprAST::Codegen() {
Value *OperandV = Operand->Codegen();
- if (OperandV == 0) return 0;
-
- Function *F = TheModule->getFunction(std::string("unary")+Opcode);
+ if (OperandV == 0)
+ return 0;
+
+ Function *F = TheModule->getFunction(std::string("unary") + Opcode);
if (F == 0)
return ErrorV("Unknown unary operator");
-
+
return Builder.CreateCall(F, OperandV, "unop");
}
Value *BinaryExprAST::Codegen() {
Value *L = LHS->Codegen();
Value *R = RHS->Codegen();
- if (L == 0 || R == 0) return 0;
-
+ if (L == 0 || R == 0)
+ return 0;
+
switch (Op) {
- case '+': return Builder.CreateFAdd(L, R, "addtmp");
- case '-': return Builder.CreateFSub(L, R, "subtmp");
- case '*': return Builder.CreateFMul(L, R, "multmp");
+ case '+':
+ return Builder.CreateFAdd(L, R, "addtmp");
+ case '-':
+ return Builder.CreateFSub(L, R, "subtmp");
+ case '*':
+ return Builder.CreateFMul(L, R, "multmp");
case '<':
L = Builder.CreateFCmpULT(L, R, "cmptmp");
// Convert bool 0/1 to double 0.0 or 1.0
return Builder.CreateUIToFP(L, Type::getDoubleTy(getGlobalContext()),
"booltmp");
- default: break;
+ default:
+ break;
}
-
+
// If it wasn't a builtin binary operator, it must be a user defined one. Emit
// a call to it.
- Function *F = TheModule->getFunction(std::string("binary")+Op);
+ Function *F = TheModule->getFunction(std::string("binary") + Op);
assert(F && "binary operator not found!");
-
+
Value *Ops[] = { L, R };
return Builder.CreateCall(F, Ops, "binop");
}
@@ -598,66 +659,70 @@ Value *CallExprAST::Codegen() {
Function *CalleeF = TheModule->getFunction(Callee);
if (CalleeF == 0)
return ErrorV("Unknown function referenced");
-
+
// If argument mismatch error.
if (CalleeF->arg_size() != Args.size())
return ErrorV("Incorrect # arguments passed");
- std::vector<Value*> ArgsV;
+ std::vector<Value *> ArgsV;
for (unsigned i = 0, e = Args.size(); i != e; ++i) {
ArgsV.push_back(Args[i]->Codegen());
- if (ArgsV.back() == 0) return 0;
+ if (ArgsV.back() == 0)
+ return 0;
}
-
+
return Builder.CreateCall(CalleeF, ArgsV, "calltmp");
}
Value *IfExprAST::Codegen() {
Value *CondV = Cond->Codegen();
- if (CondV == 0) return 0;
-
+ if (CondV == 0)
+ return 0;
+
// Convert condition to a bool by comparing equal to 0.0.
- CondV = Builder.CreateFCmpONE(CondV,
- ConstantFP::get(getGlobalContext(), APFloat(0.0)),
- "ifcond");
-
+ CondV = Builder.CreateFCmpONE(
+ CondV, ConstantFP::get(getGlobalContext(), APFloat(0.0)), "ifcond");
+
Function *TheFunction = Builder.GetInsertBlock()->getParent();
-
+
// Create blocks for the then and else cases. Insert the 'then' block at the
// end of the function.
- BasicBlock *ThenBB = BasicBlock::Create(getGlobalContext(), "then", TheFunction);
+ BasicBlock *ThenBB =
+ BasicBlock::Create(getGlobalContext(), "then", TheFunction);
BasicBlock *ElseBB = BasicBlock::Create(getGlobalContext(), "else");
BasicBlock *MergeBB = BasicBlock::Create(getGlobalContext(), "ifcont");
-
+
Builder.CreateCondBr(CondV, ThenBB, ElseBB);
-
+
// Emit then value.
Builder.SetInsertPoint(ThenBB);
-
+
Value *ThenV = Then->Codegen();
- if (ThenV == 0) return 0;
-
+ if (ThenV == 0)
+ return 0;
+
Builder.CreateBr(MergeBB);
// Codegen of 'Then' can change the current block, update ThenBB for the PHI.
ThenBB = Builder.GetInsertBlock();
-
+
// Emit else block.
TheFunction->getBasicBlockList().push_back(ElseBB);
Builder.SetInsertPoint(ElseBB);
-
+
Value *ElseV = Else->Codegen();
- if (ElseV == 0) return 0;
-
+ if (ElseV == 0)
+ return 0;
+
Builder.CreateBr(MergeBB);
// Codegen of 'Else' can change the current block, update ElseBB for the PHI.
ElseBB = Builder.GetInsertBlock();
-
+
// Emit merge block.
TheFunction->getBasicBlockList().push_back(MergeBB);
Builder.SetInsertPoint(MergeBB);
- PHINode *PN = Builder.CreatePHI(Type::getDoubleTy(getGlobalContext()), 2,
- "iftmp");
-
+ PHINode *PN =
+ Builder.CreatePHI(Type::getDoubleTy(getGlobalContext()), 2, "iftmp");
+
PN->addIncoming(ThenV, ThenBB);
PN->addIncoming(ElseV, ElseBB);
return PN;
@@ -668,7 +733,7 @@ Value *ForExprAST::Codegen() {
// ...
// start = startexpr
// goto loop
- // loop:
+ // loop:
// variable = phi [start, loopheader], [nextvariable, loopend]
// ...
// bodyexpr
@@ -679,140 +744,145 @@ Value *ForExprAST::Codegen() {
// endcond = endexpr
// br endcond, loop, endloop
// outloop:
-
+
// Emit the start code first, without 'variable' in scope.
Value *StartVal = Start->Codegen();
- if (StartVal == 0) return 0;
-
+ if (StartVal == 0)
+ return 0;
+
// Make the new basic block for the loop header, inserting after current
// block.
Function *TheFunction = Builder.GetInsertBlock()->getParent();
BasicBlock *PreheaderBB = Builder.GetInsertBlock();
- BasicBlock *LoopBB = BasicBlock::Create(getGlobalContext(), "loop", TheFunction);
-
+ BasicBlock *LoopBB =
+ BasicBlock::Create(getGlobalContext(), "loop", TheFunction);
+
// Insert an explicit fall through from the current block to the LoopBB.
Builder.CreateBr(LoopBB);
// Start insertion in LoopBB.
Builder.SetInsertPoint(LoopBB);
-
+
// Start the PHI node with an entry for Start.
- PHINode *Variable = Builder.CreatePHI(Type::getDoubleTy(getGlobalContext()), 2, VarName.c_str());
+ PHINode *Variable = Builder.CreatePHI(Type::getDoubleTy(getGlobalContext()),
+ 2, VarName.c_str());
Variable->addIncoming(StartVal, PreheaderBB);
-
+
// Within the loop, the variable is defined equal to the PHI node. If it
// shadows an existing variable, we have to restore it, so save it now.
Value *OldVal = NamedValues[VarName];
NamedValues[VarName] = Variable;
-
+
// Emit the body of the loop. This, like any other expr, can change the
// current BB. Note that we ignore the value computed by the body, but don't
// allow an error.
if (Body->Codegen() == 0)
return 0;
-
+
// Emit the step value.
Value *StepVal;
if (Step) {
StepVal = Step->Codegen();
- if (StepVal == 0) return 0;
+ if (StepVal == 0)
+ return 0;
} else {
// If not specified, use 1.0.
StepVal = ConstantFP::get(getGlobalContext(), APFloat(1.0));
}
-
+
Value *NextVar = Builder.CreateFAdd(Variable, StepVal, "nextvar");
// Compute the end condition.
Value *EndCond = End->Codegen();
- if (EndCond == 0) return EndCond;
-
+ if (EndCond == 0)
+ return EndCond;
+
// Convert condition to a bool by comparing equal to 0.0.
- EndCond = Builder.CreateFCmpONE(EndCond,
- ConstantFP::get(getGlobalContext(), APFloat(0.0)),
- "loopcond");
-
+ EndCond = Builder.CreateFCmpONE(
+ EndCond, ConstantFP::get(getGlobalContext(), APFloat(0.0)), "loopcond");
+
// Create the "after loop" block and insert it.
BasicBlock *LoopEndBB = Builder.GetInsertBlock();
- BasicBlock *AfterBB = BasicBlock::Create(getGlobalContext(), "afterloop", TheFunction);
-
+ BasicBlock *AfterBB =
+ BasicBlock::Create(getGlobalContext(), "afterloop", TheFunction);
+
// Insert the conditional branch into the end of LoopEndBB.
Builder.CreateCondBr(EndCond, LoopBB, AfterBB);
-
+
// Any new code will be inserted in AfterBB.
Builder.SetInsertPoint(AfterBB);
-
+
// Add a new entry to the PHI node for the backedge.
Variable->addIncoming(NextVar, LoopEndBB);
-
+
// Restore the unshadowed variable.
if (OldVal)
NamedValues[VarName] = OldVal;
else
NamedValues.erase(VarName);
-
// for expr always returns 0.0.
return Constant::getNullValue(Type::getDoubleTy(getGlobalContext()));
}
Function *PrototypeAST::Codegen() {
// Make the function type: double(double,double) etc.
- std::vector<Type*> Doubles(Args.size(),
- Type::getDoubleTy(getGlobalContext()));
- FunctionType *FT = FunctionType::get(Type::getDoubleTy(getGlobalContext()),
- Doubles, false);
-
- Function *F = Function::Create(FT, Function::ExternalLinkage, Name, TheModule);
-
+ std::vector<Type *> Doubles(Args.size(),
+ Type::getDoubleTy(getGlobalContext()));
+ FunctionType *FT =
+ FunctionType::get(Type::getDoubleTy(getGlobalContext()), Doubles, false);
+
+ Function *F =
+ Function::Create(FT, Function::ExternalLinkage, Name, TheModule);
+
// If F conflicted, there was already something named 'Name'. If it has a
// body, don't allow redefinition or reextern.
if (F->getName() != Name) {
// Delete the one we just made and get the existing one.
F->eraseFromParent();
F = TheModule->getFunction(Name);
-
+
// If F already has a body, reject this.
if (!F->empty()) {
ErrorF("redefinition of function");
return 0;
}
-
+
// If F took a different number of args, reject.
if (F->arg_size() != Args.size()) {
ErrorF("redefinition of function with different # args");
return 0;
}
}
-
+
// Set names for all arguments.
unsigned Idx = 0;
for (Function::arg_iterator AI = F->arg_begin(); Idx != Args.size();
++AI, ++Idx) {
AI->setName(Args[Idx]);
-
+
// Add arguments to variable symbol table.
NamedValues[Args[Idx]] = AI;
}
-
+
return F;
}
Function *FunctionAST::Codegen() {
NamedValues.clear();
-
+
Function *TheFunction = Proto->Codegen();
if (TheFunction == 0)
return 0;
-
+
// If this is an operator, install it.
if (Proto->isBinaryOp())
BinopPrecedence[Proto->getOperatorName()] = Proto->getBinaryPrecedence();
-
+
// Create a new basic block to start insertion into.
BasicBlock *BB = BasicBlock::Create(getGlobalContext(), "entry", TheFunction);
Builder.SetInsertPoint(BB);
-
+
if (Value *RetVal = Body->Codegen()) {
// Finish off the function.
Builder.CreateRet(RetVal);
@@ -822,10 +892,10 @@ Function *FunctionAST::Codegen() {
// Optimize the function.
TheFPM->run(*TheFunction);
-
+
return TheFunction;
}
-
+
// Error reading body, remove function.
TheFunction->eraseFromParent();
@@ -868,9 +938,10 @@ static void HandleTopLevelExpression() {
// Evaluate a top-level expression into an anonymous function.
if (FunctionAST *F = ParseTopLevelExpr()) {
if (Function *LF = F->Codegen()) {
+ TheExecutionEngine->finalizeObject();
// JIT the function, returning a function pointer.
void *FPtr = TheExecutionEngine->getPointerToFunction(LF);
-
+
// Cast it to the right type (takes no arguments, returns a double) so we
// can call it as a native function.
double (*FP)() = (double (*)())(intptr_t)FPtr;
@@ -887,11 +958,20 @@ static void MainLoop() {
while (1) {
fprintf(stderr, "ready> ");
switch (CurTok) {
- case tok_eof: return;
- case ';': getNextToken(); break; // ignore top-level semicolons.
- case tok_def: HandleDefinition(); break;
- case tok_extern: HandleExtern(); break;
- default: HandleTopLevelExpression(); break;
+ case tok_eof:
+ return;
+ case ';':
+ getNextToken();
+ break; // ignore top-level semicolons.
+ case tok_def:
+ HandleDefinition();
+ break;
+ case tok_extern:
+ HandleExtern();
+ break;
+ default:
+ HandleTopLevelExpression();
+ break;
}
}
}
@@ -901,15 +981,13 @@ static void MainLoop() {
//===----------------------------------------------------------------------===//
/// putchard - putchar that takes a double and returns 0.
-extern "C"
-double putchard(double X) {
+extern "C" double putchard(double X) {
putchar((char)X);
return 0;
}
/// printd - printf that takes a double prints it as "%f\n", returning 0.
-extern "C"
-double printd(double X) {
+extern "C" double printd(double X) {
printf("%f\n", X);
return 0;
}
@@ -920,6 +998,8 @@ double printd(double X) {
int main() {
InitializeNativeTarget();
+ InitializeNativeTargetAsmPrinter();
+ InitializeNativeTargetAsmParser();
LLVMContext &Context = getGlobalContext();
// Install standard binary operators.
@@ -927,7 +1007,7 @@ int main() {
BinopPrecedence['<'] = 10;
BinopPrecedence['+'] = 20;
BinopPrecedence['-'] = 20;
- BinopPrecedence['*'] = 40; // highest.
+ BinopPrecedence['*'] = 40; // highest.
// Prime the first token.
fprintf(stderr, "ready> ");
@@ -940,13 +1020,16 @@ int main() {
// Create the JIT. This takes ownership of the module.
std::string ErrStr;
TheExecutionEngine =
- EngineBuilder(std::move(Owner)).setErrorStr(&ErrStr).create();
+ EngineBuilder(std::move(Owner))
+ .setErrorStr(&ErrStr)
+ .setMCJITMemoryManager(llvm::make_unique<SectionMemoryManager>())
+ .create();
if (!TheExecutionEngine) {
fprintf(stderr, "Could not create ExecutionEngine: %s\n", ErrStr.c_str());
exit(1);
}
- FunctionPassManager OurFPM(TheModule);
+ legacy::FunctionPassManager OurFPM(TheModule);
// Set up the optimizer pipeline. Start with registering info about how the
// target lays out data structures.
diff --git a/examples/Kaleidoscope/Chapter7/CMakeLists.txt b/examples/Kaleidoscope/Chapter7/CMakeLists.txt
index bdc0e55..4bc1b2c 100644
--- a/examples/Kaleidoscope/Chapter7/CMakeLists.txt
+++ b/examples/Kaleidoscope/Chapter7/CMakeLists.txt
@@ -3,15 +3,15 @@ set(LLVM_LINK_COMPONENTS
Core
ExecutionEngine
InstCombine
- MC
+ MCJIT
ScalarOpts
Support
TransformUtils
- nativecodegen
+ native
)
set(LLVM_REQUIRES_RTTI 1)
-add_llvm_example(Kaleidoscope-Ch7
+add_kaleidoscope_chapter(Kaleidoscope-Ch7
toy.cpp
)
diff --git a/examples/Kaleidoscope/Chapter7/toy.cpp b/examples/Kaleidoscope/Chapter7/toy.cpp
index 56a6fa9..82f083a 100644
--- a/examples/Kaleidoscope/Chapter7/toy.cpp
+++ b/examples/Kaleidoscope/Chapter7/toy.cpp
@@ -1,12 +1,14 @@
#include "llvm/Analysis/Passes.h"
#include "llvm/ExecutionEngine/ExecutionEngine.h"
+#include "llvm/ExecutionEngine/MCJIT.h"
+#include "llvm/ExecutionEngine/SectionMemoryManager.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/LegacyPassManager.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Verifier.h"
-#include "llvm/PassManager.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Transforms/Scalar.h"
#include <cctype>
@@ -26,24 +28,30 @@ enum Token {
tok_eof = -1,
// commands
- tok_def = -2, tok_extern = -3,
+ tok_def = -2,
+ tok_extern = -3,
// primary
- tok_identifier = -4, tok_number = -5,
-
+ tok_identifier = -4,
+ tok_number = -5,
+
// control
- tok_if = -6, tok_then = -7, tok_else = -8,
- tok_for = -9, tok_in = -10,
-
+ tok_if = -6,
+ tok_then = -7,
+ tok_else = -8,
+ tok_for = -9,
+ tok_in = -10,
+
// operators
- tok_binary = -11, tok_unary = -12,
-
+ tok_binary = -11,
+ tok_unary = -12,
+
// var definition
tok_var = -13
};
-static std::string IdentifierStr; // Filled in if tok_identifier
-static double NumVal; // Filled in if tok_number
+static std::string IdentifierStr; // Filled in if tok_identifier
+static double NumVal; // Filled in if tok_number
/// gettok - Return the next token from standard input.
static int gettok() {
@@ -58,20 +66,30 @@ static int gettok() {
while (isalnum((LastChar = getchar())))
IdentifierStr += LastChar;
- if (IdentifierStr == "def") return tok_def;
- if (IdentifierStr == "extern") return tok_extern;
- if (IdentifierStr == "if") return tok_if;
- if (IdentifierStr == "then") return tok_then;
- if (IdentifierStr == "else") return tok_else;
- if (IdentifierStr == "for") return tok_for;
- if (IdentifierStr == "in") return tok_in;
- if (IdentifierStr == "binary") return tok_binary;
- if (IdentifierStr == "unary") return tok_unary;
- if (IdentifierStr == "var") return tok_var;
+ if (IdentifierStr == "def")
+ return tok_def;
+ if (IdentifierStr == "extern")
+ return tok_extern;
+ if (IdentifierStr == "if")
+ return tok_if;
+ if (IdentifierStr == "then")
+ return tok_then;
+ if (IdentifierStr == "else")
+ return tok_else;
+ if (IdentifierStr == "for")
+ return tok_for;
+ if (IdentifierStr == "in")
+ return tok_in;
+ if (IdentifierStr == "binary")
+ return tok_binary;
+ if (IdentifierStr == "unary")
+ return tok_unary;
+ if (IdentifierStr == "var")
+ return tok_var;
return tok_identifier;
}
- if (isdigit(LastChar) || LastChar == '.') { // Number: [0-9.]+
+ if (isdigit(LastChar) || LastChar == '.') { // Number: [0-9.]+
std::string NumStr;
do {
NumStr += LastChar;
@@ -84,13 +102,14 @@ static int gettok() {
if (LastChar == '#') {
// Comment until end of line.
- do LastChar = getchar();
+ do
+ LastChar = getchar();
while (LastChar != EOF && LastChar != '\n' && LastChar != '\r');
-
+
if (LastChar != EOF)
return gettok();
}
-
+
// Check for end of file. Don't eat the EOF.
if (LastChar == EOF)
return tok_eof;
@@ -115,6 +134,7 @@ public:
/// NumberExprAST - Expression class for numeric literals like "1.0".
class NumberExprAST : public ExprAST {
double Val;
+
public:
NumberExprAST(double val) : Val(val) {}
virtual Value *Codegen();
@@ -123,6 +143,7 @@ public:
/// VariableExprAST - Expression class for referencing a variable, like "a".
class VariableExprAST : public ExprAST {
std::string Name;
+
public:
VariableExprAST(const std::string &name) : Name(name) {}
const std::string &getName() const { return Name; }
@@ -133,9 +154,10 @@ public:
class UnaryExprAST : public ExprAST {
char Opcode;
ExprAST *Operand;
+
public:
- UnaryExprAST(char opcode, ExprAST *operand)
- : Opcode(opcode), Operand(operand) {}
+ UnaryExprAST(char opcode, ExprAST *operand)
+ : Opcode(opcode), Operand(operand) {}
virtual Value *Codegen();
};
@@ -143,28 +165,31 @@ public:
class BinaryExprAST : public ExprAST {
char Op;
ExprAST *LHS, *RHS;
+
public:
- BinaryExprAST(char op, ExprAST *lhs, ExprAST *rhs)
- : Op(op), LHS(lhs), RHS(rhs) {}
+ BinaryExprAST(char op, ExprAST *lhs, ExprAST *rhs)
+ : Op(op), LHS(lhs), RHS(rhs) {}
virtual Value *Codegen();
};
/// CallExprAST - Expression class for function calls.
class CallExprAST : public ExprAST {
std::string Callee;
- std::vector<ExprAST*> Args;
+ std::vector<ExprAST *> Args;
+
public:
- CallExprAST(const std::string &callee, std::vector<ExprAST*> &args)
- : Callee(callee), Args(args) {}
+ CallExprAST(const std::string &callee, std::vector<ExprAST *> &args)
+ : Callee(callee), Args(args) {}
virtual Value *Codegen();
};
/// IfExprAST - Expression class for if/then/else.
class IfExprAST : public ExprAST {
ExprAST *Cond, *Then, *Else;
+
public:
IfExprAST(ExprAST *cond, ExprAST *then, ExprAST *_else)
- : Cond(cond), Then(then), Else(_else) {}
+ : Cond(cond), Then(then), Else(_else) {}
virtual Value *Codegen();
};
@@ -172,22 +197,24 @@ public:
class ForExprAST : public ExprAST {
std::string VarName;
ExprAST *Start, *End, *Step, *Body;
+
public:
ForExprAST(const std::string &varname, ExprAST *start, ExprAST *end,
ExprAST *step, ExprAST *body)
- : VarName(varname), Start(start), End(end), Step(step), Body(body) {}
+ : VarName(varname), Start(start), End(end), Step(step), Body(body) {}
virtual Value *Codegen();
};
/// VarExprAST - Expression class for var/in
class VarExprAST : public ExprAST {
- std::vector<std::pair<std::string, ExprAST*> > VarNames;
+ std::vector<std::pair<std::string, ExprAST *> > VarNames;
ExprAST *Body;
+
public:
- VarExprAST(const std::vector<std::pair<std::string, ExprAST*> > &varnames,
+ VarExprAST(const std::vector<std::pair<std::string, ExprAST *> > &varnames,
ExprAST *body)
- : VarNames(varnames), Body(body) {}
-
+ : VarNames(varnames), Body(body) {}
+
virtual Value *Codegen();
};
@@ -197,24 +224,24 @@ class PrototypeAST {
std::string Name;
std::vector<std::string> Args;
bool isOperator;
- unsigned Precedence; // Precedence if a binary op.
+ unsigned Precedence; // Precedence if a binary op.
public:
PrototypeAST(const std::string &name, const std::vector<std::string> &args,
bool isoperator = false, unsigned prec = 0)
- : Name(name), Args(args), isOperator(isoperator), Precedence(prec) {}
-
+ : Name(name), Args(args), isOperator(isoperator), Precedence(prec) {}
+
bool isUnaryOp() const { return isOperator && Args.size() == 1; }
bool isBinaryOp() const { return isOperator && Args.size() == 2; }
-
+
char getOperatorName() const {
assert(isUnaryOp() || isBinaryOp());
- return Name[Name.size()-1];
+ return Name[Name.size() - 1];
}
-
+
unsigned getBinaryPrecedence() const { return Precedence; }
-
+
Function *Codegen();
-
+
void CreateArgumentAllocas(Function *F);
};
@@ -222,10 +249,10 @@ public:
class FunctionAST {
PrototypeAST *Proto;
ExprAST *Body;
+
public:
- FunctionAST(PrototypeAST *proto, ExprAST *body)
- : Proto(proto), Body(body) {}
-
+ FunctionAST(PrototypeAST *proto, ExprAST *body) : Proto(proto), Body(body) {}
+
Function *Codegen();
};
} // end anonymous namespace
@@ -238,9 +265,7 @@ public:
/// token the parser is looking at. getNextToken reads another token from the
/// lexer and updates CurTok with its results.
static int CurTok;
-static int getNextToken() {
- return CurTok = gettok();
-}
+static int getNextToken() { return CurTok = gettok(); }
/// BinopPrecedence - This holds the precedence for each binary operator that is
/// defined.
@@ -250,17 +275,27 @@ static std::map<char, int> BinopPrecedence;
static int GetTokPrecedence() {
if (!isascii(CurTok))
return -1;
-
+
// Make sure it's a declared binop.
int TokPrec = BinopPrecedence[CurTok];
- if (TokPrec <= 0) return -1;
+ if (TokPrec <= 0)
+ return -1;
return TokPrec;
}
/// Error* - These are little helper functions for error handling.
-ExprAST *Error(const char *Str) { fprintf(stderr, "Error: %s\n", Str);return 0;}
-PrototypeAST *ErrorP(const char *Str) { Error(Str); return 0; }
-FunctionAST *ErrorF(const char *Str) { Error(Str); return 0; }
+ExprAST *Error(const char *Str) {
+ fprintf(stderr, "Error: %s\n", Str);
+ return 0;
+}
+PrototypeAST *ErrorP(const char *Str) {
+ Error(Str);
+ return 0;
+}
+FunctionAST *ErrorF(const char *Str) {
+ Error(Str);
+ return 0;
+}
static ExprAST *ParseExpression();
@@ -269,22 +304,24 @@ static ExprAST *ParseExpression();
/// ::= identifier '(' expression* ')'
static ExprAST *ParseIdentifierExpr() {
std::string IdName = IdentifierStr;
-
- getNextToken(); // eat identifier.
-
+
+ getNextToken(); // eat identifier.
+
if (CurTok != '(') // Simple variable ref.
return new VariableExprAST(IdName);
-
+
// Call.
- getNextToken(); // eat (
- std::vector<ExprAST*> Args;
+ getNextToken(); // eat (
+ std::vector<ExprAST *> Args;
if (CurTok != ')') {
while (1) {
ExprAST *Arg = ParseExpression();
- if (!Arg) return 0;
+ if (!Arg)
+ return 0;
Args.push_back(Arg);
- if (CurTok == ')') break;
+ if (CurTok == ')')
+ break;
if (CurTok != ',')
return Error("Expected ')' or ',' in argument list");
@@ -294,7 +331,7 @@ static ExprAST *ParseIdentifierExpr() {
// Eat the ')'.
getNextToken();
-
+
return new CallExprAST(IdName, Args);
}
@@ -307,126 +344,136 @@ static ExprAST *ParseNumberExpr() {
/// parenexpr ::= '(' expression ')'
static ExprAST *ParseParenExpr() {
- getNextToken(); // eat (.
+ getNextToken(); // eat (.
ExprAST *V = ParseExpression();
- if (!V) return 0;
-
+ if (!V)
+ return 0;
+
if (CurTok != ')')
return Error("expected ')'");
- getNextToken(); // eat ).
+ getNextToken(); // eat ).
return V;
}
/// ifexpr ::= 'if' expression 'then' expression 'else' expression
static ExprAST *ParseIfExpr() {
- getNextToken(); // eat the if.
-
+ getNextToken(); // eat the if.
+
// condition.
ExprAST *Cond = ParseExpression();
- if (!Cond) return 0;
-
+ if (!Cond)
+ return 0;
+
if (CurTok != tok_then)
return Error("expected then");
- getNextToken(); // eat the then
-
+ getNextToken(); // eat the then
+
ExprAST *Then = ParseExpression();
- if (Then == 0) return 0;
-
+ if (Then == 0)
+ return 0;
+
if (CurTok != tok_else)
return Error("expected else");
-
+
getNextToken();
-
+
ExprAST *Else = ParseExpression();
- if (!Else) return 0;
-
+ if (!Else)
+ return 0;
+
return new IfExprAST(Cond, Then, Else);
}
/// forexpr ::= 'for' identifier '=' expr ',' expr (',' expr)? 'in' expression
static ExprAST *ParseForExpr() {
- getNextToken(); // eat the for.
+ getNextToken(); // eat the for.
if (CurTok != tok_identifier)
return Error("expected identifier after for");
-
+
std::string IdName = IdentifierStr;
- getNextToken(); // eat identifier.
-
+ getNextToken(); // eat identifier.
+
if (CurTok != '=')
return Error("expected '=' after for");
- getNextToken(); // eat '='.
-
-
+ getNextToken(); // eat '='.
+
ExprAST *Start = ParseExpression();
- if (Start == 0) return 0;
+ if (Start == 0)
+ return 0;
if (CurTok != ',')
return Error("expected ',' after for start value");
getNextToken();
-
+
ExprAST *End = ParseExpression();
- if (End == 0) return 0;
-
+ if (End == 0)
+ return 0;
+
// The step value is optional.
ExprAST *Step = 0;
if (CurTok == ',') {
getNextToken();
Step = ParseExpression();
- if (Step == 0) return 0;
+ if (Step == 0)
+ return 0;
}
-
+
if (CurTok != tok_in)
return Error("expected 'in' after for");
- getNextToken(); // eat 'in'.
-
+ getNextToken(); // eat 'in'.
+
ExprAST *Body = ParseExpression();
- if (Body == 0) return 0;
+ if (Body == 0)
+ return 0;
return new ForExprAST(IdName, Start, End, Step, Body);
}
-/// varexpr ::= 'var' identifier ('=' expression)?
+/// varexpr ::= 'var' identifier ('=' expression)?
// (',' identifier ('=' expression)?)* 'in' expression
static ExprAST *ParseVarExpr() {
- getNextToken(); // eat the var.
+ getNextToken(); // eat the var.
- std::vector<std::pair<std::string, ExprAST*> > VarNames;
+ std::vector<std::pair<std::string, ExprAST *> > VarNames;
// At least one variable name is required.
if (CurTok != tok_identifier)
return Error("expected identifier after var");
-
+
while (1) {
std::string Name = IdentifierStr;
- getNextToken(); // eat identifier.
+ getNextToken(); // eat identifier.
// Read the optional initializer.
ExprAST *Init = 0;
if (CurTok == '=') {
getNextToken(); // eat the '='.
-
+
Init = ParseExpression();
- if (Init == 0) return 0;
+ if (Init == 0)
+ return 0;
}
-
+
VarNames.push_back(std::make_pair(Name, Init));
-
+
// End of var list, exit loop.
- if (CurTok != ',') break;
+ if (CurTok != ',')
+ break;
getNextToken(); // eat the ','.
-
+
if (CurTok != tok_identifier)
return Error("expected identifier list after var");
}
-
+
// At this point, we have to have 'in'.
if (CurTok != tok_in)
return Error("expected 'in' keyword after 'var'");
- getNextToken(); // eat 'in'.
-
+ getNextToken(); // eat 'in'.
+
ExprAST *Body = ParseExpression();
- if (Body == 0) return 0;
-
+ if (Body == 0)
+ return 0;
+
return new VarExprAST(VarNames, Body);
}
@@ -439,13 +486,20 @@ static ExprAST *ParseVarExpr() {
/// ::= varexpr
static ExprAST *ParsePrimary() {
switch (CurTok) {
- default: return Error("unknown token when expecting an expression");
- case tok_identifier: return ParseIdentifierExpr();
- case tok_number: return ParseNumberExpr();
- case '(': return ParseParenExpr();
- case tok_if: return ParseIfExpr();
- case tok_for: return ParseForExpr();
- case tok_var: return ParseVarExpr();
+ default:
+ return Error("unknown token when expecting an expression");
+ case tok_identifier:
+ return ParseIdentifierExpr();
+ case tok_number:
+ return ParseNumberExpr();
+ case '(':
+ return ParseParenExpr();
+ case tok_if:
+ return ParseIfExpr();
+ case tok_for:
+ return ParseForExpr();
+ case tok_var:
+ return ParseVarExpr();
}
}
@@ -456,7 +510,7 @@ static ExprAST *ParseUnary() {
// If the current token is not an operator, it must be a primary expr.
if (!isascii(CurTok) || CurTok == '(' || CurTok == ',')
return ParsePrimary();
-
+
// If this is a unary operator, read it.
int Opc = CurTok;
getNextToken();
@@ -471,28 +525,30 @@ static ExprAST *ParseBinOpRHS(int ExprPrec, ExprAST *LHS) {
// If this is a binop, find its precedence.
while (1) {
int TokPrec = GetTokPrecedence();
-
+
// If this is a binop that binds at least as tightly as the current binop,
// consume it, otherwise we are done.
if (TokPrec < ExprPrec)
return LHS;
-
+
// Okay, we know this is a binop.
int BinOp = CurTok;
- getNextToken(); // eat binop
-
+ getNextToken(); // eat binop
+
// Parse the unary expression after the binary operator.
ExprAST *RHS = ParseUnary();
- if (!RHS) return 0;
-
+ if (!RHS)
+ return 0;
+
// If BinOp binds less tightly with RHS than the operator after RHS, let
// the pending operator take RHS as its LHS.
int NextPrec = GetTokPrecedence();
if (TokPrec < NextPrec) {
- RHS = ParseBinOpRHS(TokPrec+1, RHS);
- if (RHS == 0) return 0;
+ RHS = ParseBinOpRHS(TokPrec + 1, RHS);
+ if (RHS == 0)
+ return 0;
}
-
+
// Merge LHS/RHS.
LHS = new BinaryExprAST(BinOp, LHS, RHS);
}
@@ -503,8 +559,9 @@ static ExprAST *ParseBinOpRHS(int ExprPrec, ExprAST *LHS) {
///
static ExprAST *ParseExpression() {
ExprAST *LHS = ParseUnary();
- if (!LHS) return 0;
-
+ if (!LHS)
+ return 0;
+
return ParseBinOpRHS(0, LHS);
}
@@ -514,10 +571,10 @@ static ExprAST *ParseExpression() {
/// ::= unary LETTER (id)
static PrototypeAST *ParsePrototype() {
std::string FnName;
-
+
unsigned Kind = 0; // 0 = identifier, 1 = unary, 2 = binary.
unsigned BinaryPrecedence = 30;
-
+
switch (CurTok) {
default:
return ErrorP("Expected function name in prototype");
@@ -543,7 +600,7 @@ static PrototypeAST *ParsePrototype() {
FnName += (char)CurTok;
Kind = 2;
getNextToken();
-
+
// Read the precedence if present.
if (CurTok == tok_number) {
if (NumVal < 1 || NumVal > 100)
@@ -553,31 +610,32 @@ static PrototypeAST *ParsePrototype() {
}
break;
}
-
+
if (CurTok != '(')
return ErrorP("Expected '(' in prototype");
-
+
std::vector<std::string> ArgNames;
while (getNextToken() == tok_identifier)
ArgNames.push_back(IdentifierStr);
if (CurTok != ')')
return ErrorP("Expected ')' in prototype");
-
+
// success.
- getNextToken(); // eat ')'.
-
+ getNextToken(); // eat ')'.
+
// Verify right number of names for operator.
if (Kind && ArgNames.size() != Kind)
return ErrorP("Invalid number of operands for operator");
-
+
return new PrototypeAST(FnName, ArgNames, Kind != 0, BinaryPrecedence);
}
/// definition ::= 'def' prototype expression
static FunctionAST *ParseDefinition() {
- getNextToken(); // eat def.
+ getNextToken(); // eat def.
PrototypeAST *Proto = ParsePrototype();
- if (Proto == 0) return 0;
+ if (Proto == 0)
+ return 0;
if (ExprAST *E = ParseExpression())
return new FunctionAST(Proto, E);
@@ -596,7 +654,7 @@ static FunctionAST *ParseTopLevelExpr() {
/// external ::= 'extern' prototype
static PrototypeAST *ParseExtern() {
- getNextToken(); // eat extern.
+ getNextToken(); // eat extern.
return ParsePrototype();
}
@@ -606,17 +664,20 @@ static PrototypeAST *ParseExtern() {
static Module *TheModule;
static IRBuilder<> Builder(getGlobalContext());
-static std::map<std::string, AllocaInst*> NamedValues;
-static FunctionPassManager *TheFPM;
+static std::map<std::string, AllocaInst *> NamedValues;
+static legacy::FunctionPassManager *TheFPM;
-Value *ErrorV(const char *Str) { Error(Str); return 0; }
+Value *ErrorV(const char *Str) {
+ Error(Str);
+ return 0;
+}
/// CreateEntryBlockAlloca - Create an alloca instruction in the entry block of
/// the function. This is used for mutable variables etc.
static AllocaInst *CreateEntryBlockAlloca(Function *TheFunction,
const std::string &VarName) {
IRBuilder<> TmpB(&TheFunction->getEntryBlock(),
- TheFunction->getEntryBlock().begin());
+ TheFunction->getEntryBlock().begin());
return TmpB.CreateAlloca(Type::getDoubleTy(getGlobalContext()), 0,
VarName.c_str());
}
@@ -628,7 +689,8 @@ Value *NumberExprAST::Codegen() {
Value *VariableExprAST::Codegen() {
// Look this variable up in the function.
Value *V = NamedValues[Name];
- if (V == 0) return ErrorV("Unknown variable name");
+ if (V == 0)
+ return ErrorV("Unknown variable name");
// Load the value.
return Builder.CreateLoad(V, Name.c_str());
@@ -636,12 +698,13 @@ Value *VariableExprAST::Codegen() {
Value *UnaryExprAST::Codegen() {
Value *OperandV = Operand->Codegen();
- if (OperandV == 0) return 0;
-
- Function *F = TheModule->getFunction(std::string("unary")+Opcode);
+ if (OperandV == 0)
+ return 0;
+
+ Function *F = TheModule->getFunction(std::string("unary") + Opcode);
if (F == 0)
return ErrorV("Unknown unary operator");
-
+
return Builder.CreateCall(F, OperandV, "unop");
}
@@ -649,42 +712,49 @@ Value *BinaryExprAST::Codegen() {
// Special case '=' because we don't want to emit the LHS as an expression.
if (Op == '=') {
// Assignment requires the LHS to be an identifier.
- VariableExprAST *LHSE = dynamic_cast<VariableExprAST*>(LHS);
+ VariableExprAST *LHSE = dynamic_cast<VariableExprAST *>(LHS);
if (!LHSE)
return ErrorV("destination of '=' must be a variable");
// Codegen the RHS.
Value *Val = RHS->Codegen();
- if (Val == 0) return 0;
+ if (Val == 0)
+ return 0;
// Look up the name.
Value *Variable = NamedValues[LHSE->getName()];
- if (Variable == 0) return ErrorV("Unknown variable name");
+ if (Variable == 0)
+ return ErrorV("Unknown variable name");
Builder.CreateStore(Val, Variable);
return Val;
}
-
+
Value *L = LHS->Codegen();
Value *R = RHS->Codegen();
- if (L == 0 || R == 0) return 0;
-
+ if (L == 0 || R == 0)
+ return 0;
+
switch (Op) {
- case '+': return Builder.CreateFAdd(L, R, "addtmp");
- case '-': return Builder.CreateFSub(L, R, "subtmp");
- case '*': return Builder.CreateFMul(L, R, "multmp");
+ case '+':
+ return Builder.CreateFAdd(L, R, "addtmp");
+ case '-':
+ return Builder.CreateFSub(L, R, "subtmp");
+ case '*':
+ return Builder.CreateFMul(L, R, "multmp");
case '<':
L = Builder.CreateFCmpULT(L, R, "cmptmp");
// Convert bool 0/1 to double 0.0 or 1.0
return Builder.CreateUIToFP(L, Type::getDoubleTy(getGlobalContext()),
"booltmp");
- default: break;
+ default:
+ break;
}
-
+
// If it wasn't a builtin binary operator, it must be a user defined one. Emit
// a call to it.
- Function *F = TheModule->getFunction(std::string("binary")+Op);
+ Function *F = TheModule->getFunction(std::string("binary") + Op);
assert(F && "binary operator not found!");
-
+
Value *Ops[] = { L, R };
return Builder.CreateCall(F, Ops, "binop");
}
@@ -694,66 +764,70 @@ Value *CallExprAST::Codegen() {
Function *CalleeF = TheModule->getFunction(Callee);
if (CalleeF == 0)
return ErrorV("Unknown function referenced");
-
+
// If argument mismatch error.
if (CalleeF->arg_size() != Args.size())
return ErrorV("Incorrect # arguments passed");
- std::vector<Value*> ArgsV;
+ std::vector<Value *> ArgsV;
for (unsigned i = 0, e = Args.size(); i != e; ++i) {
ArgsV.push_back(Args[i]->Codegen());
- if (ArgsV.back() == 0) return 0;
+ if (ArgsV.back() == 0)
+ return 0;
}
-
+
return Builder.CreateCall(CalleeF, ArgsV, "calltmp");
}
Value *IfExprAST::Codegen() {
Value *CondV = Cond->Codegen();
- if (CondV == 0) return 0;
-
+ if (CondV == 0)
+ return 0;
+
// Convert condition to a bool by comparing equal to 0.0.
- CondV = Builder.CreateFCmpONE(CondV,
- ConstantFP::get(getGlobalContext(), APFloat(0.0)),
- "ifcond");
-
+ CondV = Builder.CreateFCmpONE(
+ CondV, ConstantFP::get(getGlobalContext(), APFloat(0.0)), "ifcond");
+
Function *TheFunction = Builder.GetInsertBlock()->getParent();
-
+
// Create blocks for the then and else cases. Insert the 'then' block at the
// end of the function.
- BasicBlock *ThenBB = BasicBlock::Create(getGlobalContext(), "then", TheFunction);
+ BasicBlock *ThenBB =
+ BasicBlock::Create(getGlobalContext(), "then", TheFunction);
BasicBlock *ElseBB = BasicBlock::Create(getGlobalContext(), "else");
BasicBlock *MergeBB = BasicBlock::Create(getGlobalContext(), "ifcont");
-
+
Builder.CreateCondBr(CondV, ThenBB, ElseBB);
-
+
// Emit then value.
Builder.SetInsertPoint(ThenBB);
-
+
Value *ThenV = Then->Codegen();
- if (ThenV == 0) return 0;
-
+ if (ThenV == 0)
+ return 0;
+
Builder.CreateBr(MergeBB);
// Codegen of 'Then' can change the current block, update ThenBB for the PHI.
ThenBB = Builder.GetInsertBlock();
-
+
// Emit else block.
TheFunction->getBasicBlockList().push_back(ElseBB);
Builder.SetInsertPoint(ElseBB);
-
+
Value *ElseV = Else->Codegen();
- if (ElseV == 0) return 0;
-
+ if (ElseV == 0)
+ return 0;
+
Builder.CreateBr(MergeBB);
// Codegen of 'Else' can change the current block, update ElseBB for the PHI.
ElseBB = Builder.GetInsertBlock();
-
+
// Emit merge block.
TheFunction->getBasicBlockList().push_back(MergeBB);
Builder.SetInsertPoint(MergeBB);
- PHINode *PN = Builder.CreatePHI(Type::getDoubleTy(getGlobalContext()), 2,
- "iftmp");
-
+ PHINode *PN =
+ Builder.CreatePHI(Type::getDoubleTy(getGlobalContext()), 2, "iftmp");
+
PN->addIncoming(ThenV, ThenBB);
PN->addIncoming(ElseV, ElseBB);
return PN;
@@ -766,7 +840,7 @@ Value *ForExprAST::Codegen() {
// start = startexpr
// store start -> var
// goto loop
- // loop:
+ // loop:
// ...
// bodyexpr
// ...
@@ -779,95 +853,98 @@ Value *ForExprAST::Codegen() {
// store nextvar -> var
// br endcond, loop, endloop
// outloop:
-
+
Function *TheFunction = Builder.GetInsertBlock()->getParent();
// Create an alloca for the variable in the entry block.
AllocaInst *Alloca = CreateEntryBlockAlloca(TheFunction, VarName);
-
+
// Emit the start code first, without 'variable' in scope.
Value *StartVal = Start->Codegen();
- if (StartVal == 0) return 0;
-
+ if (StartVal == 0)
+ return 0;
+
// Store the value into the alloca.
Builder.CreateStore(StartVal, Alloca);
-
+
// Make the new basic block for the loop header, inserting after current
// block.
- BasicBlock *LoopBB = BasicBlock::Create(getGlobalContext(), "loop", TheFunction);
-
+ BasicBlock *LoopBB =
+ BasicBlock::Create(getGlobalContext(), "loop", TheFunction);
+
// Insert an explicit fall through from the current block to the LoopBB.
Builder.CreateBr(LoopBB);
// Start insertion in LoopBB.
Builder.SetInsertPoint(LoopBB);
-
+
// Within the loop, the variable is defined equal to the PHI node. If it
// shadows an existing variable, we have to restore it, so save it now.
AllocaInst *OldVal = NamedValues[VarName];
NamedValues[VarName] = Alloca;
-
+
// Emit the body of the loop. This, like any other expr, can change the
// current BB. Note that we ignore the value computed by the body, but don't
// allow an error.
if (Body->Codegen() == 0)
return 0;
-
+
// Emit the step value.
Value *StepVal;
if (Step) {
StepVal = Step->Codegen();
- if (StepVal == 0) return 0;
+ if (StepVal == 0)
+ return 0;
} else {
// If not specified, use 1.0.
StepVal = ConstantFP::get(getGlobalContext(), APFloat(1.0));
}
-
+
// Compute the end condition.
Value *EndCond = End->Codegen();
- if (EndCond == 0) return EndCond;
-
+ if (EndCond == 0)
+ return EndCond;
+
// Reload, increment, and restore the alloca. This handles the case where
// the body of the loop mutates the variable.
Value *CurVar = Builder.CreateLoad(Alloca, VarName.c_str());
Value *NextVar = Builder.CreateFAdd(CurVar, StepVal, "nextvar");
Builder.CreateStore(NextVar, Alloca);
-
+
// Convert condition to a bool by comparing equal to 0.0.
- EndCond = Builder.CreateFCmpONE(EndCond,
- ConstantFP::get(getGlobalContext(), APFloat(0.0)),
- "loopcond");
-
+ EndCond = Builder.CreateFCmpONE(
+ EndCond, ConstantFP::get(getGlobalContext(), APFloat(0.0)), "loopcond");
+
// Create the "after loop" block and insert it.
- BasicBlock *AfterBB = BasicBlock::Create(getGlobalContext(), "afterloop", TheFunction);
-
+ BasicBlock *AfterBB =
+ BasicBlock::Create(getGlobalContext(), "afterloop", TheFunction);
+
// Insert the conditional branch into the end of LoopEndBB.
Builder.CreateCondBr(EndCond, LoopBB, AfterBB);
-
+
// Any new code will be inserted in AfterBB.
Builder.SetInsertPoint(AfterBB);
-
+
// Restore the unshadowed variable.
if (OldVal)
NamedValues[VarName] = OldVal;
else
NamedValues.erase(VarName);
-
// for expr always returns 0.0.
return Constant::getNullValue(Type::getDoubleTy(getGlobalContext()));
}
Value *VarExprAST::Codegen() {
std::vector<AllocaInst *> OldBindings;
-
+
Function *TheFunction = Builder.GetInsertBlock()->getParent();
// Register all variables and emit their initializer.
for (unsigned i = 0, e = VarNames.size(); i != e; ++i) {
const std::string &VarName = VarNames[i].first;
ExprAST *Init = VarNames[i].second;
-
+
// Emit the initializer before adding the variable to scope, this prevents
// the initializer from referencing the variable itself, and permits stuff
// like this:
@@ -876,26 +953,28 @@ Value *VarExprAST::Codegen() {
Value *InitVal;
if (Init) {
InitVal = Init->Codegen();
- if (InitVal == 0) return 0;
+ if (InitVal == 0)
+ return 0;
} else { // If not specified, use 0.0.
InitVal = ConstantFP::get(getGlobalContext(), APFloat(0.0));
}
-
+
AllocaInst *Alloca = CreateEntryBlockAlloca(TheFunction, VarName);
Builder.CreateStore(InitVal, Alloca);
// Remember the old variable binding so that we can restore the binding when
// we unrecurse.
OldBindings.push_back(NamedValues[VarName]);
-
+
// Remember this binding.
NamedValues[VarName] = Alloca;
}
-
+
// Codegen the body, now that all vars are in scope.
Value *BodyVal = Body->Codegen();
- if (BodyVal == 0) return 0;
-
+ if (BodyVal == 0)
+ return 0;
+
// Pop all our variables from scope.
for (unsigned i = 0, e = VarNames.size(); i != e; ++i)
NamedValues[VarNames[i].first] = OldBindings[i];
@@ -906,39 +985,40 @@ Value *VarExprAST::Codegen() {
Function *PrototypeAST::Codegen() {
// Make the function type: double(double,double) etc.
- std::vector<Type*> Doubles(Args.size(),
- Type::getDoubleTy(getGlobalContext()));
- FunctionType *FT = FunctionType::get(Type::getDoubleTy(getGlobalContext()),
- Doubles, false);
-
- Function *F = Function::Create(FT, Function::ExternalLinkage, Name, TheModule);
-
+ std::vector<Type *> Doubles(Args.size(),
+ Type::getDoubleTy(getGlobalContext()));
+ FunctionType *FT =
+ FunctionType::get(Type::getDoubleTy(getGlobalContext()), Doubles, false);
+
+ Function *F =
+ Function::Create(FT, Function::ExternalLinkage, Name, TheModule);
+
// If F conflicted, there was already something named 'Name'. If it has a
// body, don't allow redefinition or reextern.
if (F->getName() != Name) {
// Delete the one we just made and get the existing one.
F->eraseFromParent();
F = TheModule->getFunction(Name);
-
+
// If F already has a body, reject this.
if (!F->empty()) {
ErrorF("redefinition of function");
return 0;
}
-
+
// If F took a different number of args, reject.
if (F->arg_size() != Args.size()) {
ErrorF("redefinition of function with different # args");
return 0;
}
}
-
+
// Set names for all arguments.
unsigned Idx = 0;
for (Function::arg_iterator AI = F->arg_begin(); Idx != Args.size();
++AI, ++Idx)
AI->setName(Args[Idx]);
-
+
return F;
}
@@ -960,19 +1040,19 @@ void PrototypeAST::CreateArgumentAllocas(Function *F) {
Function *FunctionAST::Codegen() {
NamedValues.clear();
-
+
Function *TheFunction = Proto->Codegen();
if (TheFunction == 0)
return 0;
-
+
// If this is an operator, install it.
if (Proto->isBinaryOp())
BinopPrecedence[Proto->getOperatorName()] = Proto->getBinaryPrecedence();
-
+
// Create a new basic block to start insertion into.
BasicBlock *BB = BasicBlock::Create(getGlobalContext(), "entry", TheFunction);
Builder.SetInsertPoint(BB);
-
+
// Add all arguments to the symbol table and create their allocas.
Proto->CreateArgumentAllocas(TheFunction);
@@ -985,10 +1065,10 @@ Function *FunctionAST::Codegen() {
// Optimize the function.
TheFPM->run(*TheFunction);
-
+
return TheFunction;
}
-
+
// Error reading body, remove function.
TheFunction->eraseFromParent();
@@ -1031,9 +1111,10 @@ static void HandleTopLevelExpression() {
// Evaluate a top-level expression into an anonymous function.
if (FunctionAST *F = ParseTopLevelExpr()) {
if (Function *LF = F->Codegen()) {
+ TheExecutionEngine->finalizeObject();
// JIT the function, returning a function pointer.
void *FPtr = TheExecutionEngine->getPointerToFunction(LF);
-
+
// Cast it to the right type (takes no arguments, returns a double) so we
// can call it as a native function.
double (*FP)() = (double (*)())(intptr_t)FPtr;
@@ -1050,11 +1131,20 @@ static void MainLoop() {
while (1) {
fprintf(stderr, "ready> ");
switch (CurTok) {
- case tok_eof: return;
- case ';': getNextToken(); break; // ignore top-level semicolons.
- case tok_def: HandleDefinition(); break;
- case tok_extern: HandleExtern(); break;
- default: HandleTopLevelExpression(); break;
+ case tok_eof:
+ return;
+ case ';':
+ getNextToken();
+ break; // ignore top-level semicolons.
+ case tok_def:
+ HandleDefinition();
+ break;
+ case tok_extern:
+ HandleExtern();
+ break;
+ default:
+ HandleTopLevelExpression();
+ break;
}
}
}
@@ -1064,15 +1154,13 @@ static void MainLoop() {
//===----------------------------------------------------------------------===//
/// putchard - putchar that takes a double and returns 0.
-extern "C"
-double putchard(double X) {
+extern "C" double putchard(double X) {
putchar((char)X);
return 0;
}
/// printd - printf that takes a double prints it as "%f\n", returning 0.
-extern "C"
-double printd(double X) {
+extern "C" double printd(double X) {
printf("%f\n", X);
return 0;
}
@@ -1083,6 +1171,8 @@ double printd(double X) {
int main() {
InitializeNativeTarget();
+ InitializeNativeTargetAsmPrinter();
+ InitializeNativeTargetAsmParser();
LLVMContext &Context = getGlobalContext();
// Install standard binary operators.
@@ -1091,7 +1181,7 @@ int main() {
BinopPrecedence['<'] = 10;
BinopPrecedence['+'] = 20;
BinopPrecedence['-'] = 20;
- BinopPrecedence['*'] = 40; // highest.
+ BinopPrecedence['*'] = 40; // highest.
// Prime the first token.
fprintf(stderr, "ready> ");
@@ -1104,13 +1194,16 @@ int main() {
// Create the JIT. This takes ownership of the module.
std::string ErrStr;
TheExecutionEngine =
- EngineBuilder(std::move(Owner)).setErrorStr(&ErrStr).create();
+ EngineBuilder(std::move(Owner))
+ .setErrorStr(&ErrStr)
+ .setMCJITMemoryManager(llvm::make_unique<SectionMemoryManager>())
+ .create();
if (!TheExecutionEngine) {
fprintf(stderr, "Could not create ExecutionEngine: %s\n", ErrStr.c_str());
exit(1);
}
- FunctionPassManager OurFPM(TheModule);
+ legacy::FunctionPassManager OurFPM(TheModule);
// Set up the optimizer pipeline. Start with registering info about how the
// target lays out data structures.
diff --git a/examples/Kaleidoscope/Chapter8/CMakeLists.txt b/examples/Kaleidoscope/Chapter8/CMakeLists.txt
new file mode 100644
index 0000000..42882e9
--- /dev/null
+++ b/examples/Kaleidoscope/Chapter8/CMakeLists.txt
@@ -0,0 +1,13 @@
+set(LLVM_LINK_COMPONENTS
+ Core
+ ExecutionEngine
+ MCJIT
+ Support
+ native
+ )
+
+set(LLVM_REQUIRES_RTTI 1)
+
+add_kaleidoscope_chapter(Kaleidoscope-Ch8
+ toy.cpp
+ )
diff --git a/examples/Kaleidoscope/Chapter8/Makefile b/examples/Kaleidoscope/Chapter8/Makefile
new file mode 100644
index 0000000..8e4d422
--- /dev/null
+++ b/examples/Kaleidoscope/Chapter8/Makefile
@@ -0,0 +1,16 @@
+##===- examples/Kaleidoscope/Chapter7/Makefile -------------*- Makefile -*-===##
+#
+# The LLVM Compiler Infrastructure
+#
+# This file is distributed under the University of Illinois Open Source
+# License. See LICENSE.TXT for details.
+#
+##===----------------------------------------------------------------------===##
+LEVEL = ../../..
+TOOLNAME = Kaleidoscope-Ch8
+EXAMPLE_TOOL = 1
+REQUIRES_RTTI := 1
+
+LINK_COMPONENTS := core mcjit native
+
+include $(LEVEL)/Makefile.common
diff --git a/examples/Kaleidoscope/Chapter8/toy.cpp b/examples/Kaleidoscope/Chapter8/toy.cpp
new file mode 100644
index 0000000..30d4669
--- /dev/null
+++ b/examples/Kaleidoscope/Chapter8/toy.cpp
@@ -0,0 +1,1494 @@
+#include "llvm/ADT/Triple.h"
+#include "llvm/Analysis/Passes.h"
+#include "llvm/ExecutionEngine/ExecutionEngine.h"
+#include "llvm/ExecutionEngine/MCJIT.h"
+#include "llvm/ExecutionEngine/SectionMemoryManager.h"
+#include "llvm/IR/DIBuilder.h"
+#include "llvm/IR/DataLayout.h"
+#include "llvm/IR/DerivedTypes.h"
+#include "llvm/IR/IRBuilder.h"
+#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/LegacyPassManager.h"
+#include "llvm/IR/Module.h"
+#include "llvm/IR/Verifier.h"
+#include "llvm/Support/Host.h"
+#include "llvm/Support/TargetSelect.h"
+#include "llvm/Transforms/Scalar.h"
+#include <cctype>
+#include <cstdio>
+#include <iostream>
+#include <map>
+#include <string>
+#include <vector>
+using namespace llvm;
+
+//===----------------------------------------------------------------------===//
+// Lexer
+//===----------------------------------------------------------------------===//
+
+// The lexer returns tokens [0-255] if it is an unknown character, otherwise one
+// of these for known things.
+enum Token {
+ tok_eof = -1,
+
+ // commands
+ tok_def = -2,
+ tok_extern = -3,
+
+ // primary
+ tok_identifier = -4,
+ tok_number = -5,
+
+ // control
+ tok_if = -6,
+ tok_then = -7,
+ tok_else = -8,
+ tok_for = -9,
+ tok_in = -10,
+
+ // operators
+ tok_binary = -11,
+ tok_unary = -12,
+
+ // var definition
+ tok_var = -13
+};
+
+std::string getTokName(int Tok) {
+ switch (Tok) {
+ case tok_eof:
+ return "eof";
+ case tok_def:
+ return "def";
+ case tok_extern:
+ return "extern";
+ case tok_identifier:
+ return "identifier";
+ case tok_number:
+ return "number";
+ case tok_if:
+ return "if";
+ case tok_then:
+ return "then";
+ case tok_else:
+ return "else";
+ case tok_for:
+ return "for";
+ case tok_in:
+ return "in";
+ case tok_binary:
+ return "binary";
+ case tok_unary:
+ return "unary";
+ case tok_var:
+ return "var";
+ }
+ return std::string(1, (char)Tok);
+}
+
+namespace {
+class PrototypeAST;
+class ExprAST;
+}
+static IRBuilder<> Builder(getGlobalContext());
+struct DebugInfo {
+ DICompileUnit TheCU;
+ DIType DblTy;
+ std::vector<DIScope *> LexicalBlocks;
+ std::map<const PrototypeAST *, DIScope> FnScopeMap;
+
+ void emitLocation(ExprAST *AST);
+ DIType getDoubleTy();
+} KSDbgInfo;
+
+static std::string IdentifierStr; // Filled in if tok_identifier
+static double NumVal; // Filled in if tok_number
+struct SourceLocation {
+ int Line;
+ int Col;
+};
+static SourceLocation CurLoc;
+static SourceLocation LexLoc = { 1, 0 };
+
+static int advance() {
+ int LastChar = getchar();
+
+ if (LastChar == '\n' || LastChar == '\r') {
+ LexLoc.Line++;
+ LexLoc.Col = 0;
+ } else
+ LexLoc.Col++;
+ return LastChar;
+}
+
+/// gettok - Return the next token from standard input.
+static int gettok() {
+ static int LastChar = ' ';
+
+ // Skip any whitespace.
+ while (isspace(LastChar))
+ LastChar = advance();
+
+ CurLoc = LexLoc;
+
+ if (isalpha(LastChar)) { // identifier: [a-zA-Z][a-zA-Z0-9]*
+ IdentifierStr = LastChar;
+ while (isalnum((LastChar = advance())))
+ IdentifierStr += LastChar;
+
+ if (IdentifierStr == "def")
+ return tok_def;
+ if (IdentifierStr == "extern")
+ return tok_extern;
+ if (IdentifierStr == "if")
+ return tok_if;
+ if (IdentifierStr == "then")
+ return tok_then;
+ if (IdentifierStr == "else")
+ return tok_else;
+ if (IdentifierStr == "for")
+ return tok_for;
+ if (IdentifierStr == "in")
+ return tok_in;
+ if (IdentifierStr == "binary")
+ return tok_binary;
+ if (IdentifierStr == "unary")
+ return tok_unary;
+ if (IdentifierStr == "var")
+ return tok_var;
+ return tok_identifier;
+ }
+
+ if (isdigit(LastChar) || LastChar == '.') { // Number: [0-9.]+
+ std::string NumStr;
+ do {
+ NumStr += LastChar;
+ LastChar = advance();
+ } while (isdigit(LastChar) || LastChar == '.');
+
+ NumVal = strtod(NumStr.c_str(), 0);
+ return tok_number;
+ }
+
+ if (LastChar == '#') {
+ // Comment until end of line.
+ do
+ LastChar = advance();
+ while (LastChar != EOF && LastChar != '\n' && LastChar != '\r');
+
+ if (LastChar != EOF)
+ return gettok();
+ }
+
+ // Check for end of file. Don't eat the EOF.
+ if (LastChar == EOF)
+ return tok_eof;
+
+ // Otherwise, just return the character as its ascii value.
+ int ThisChar = LastChar;
+ LastChar = advance();
+ return ThisChar;
+}
+
+//===----------------------------------------------------------------------===//
+// Abstract Syntax Tree (aka Parse Tree)
+//===----------------------------------------------------------------------===//
+namespace {
+
+std::ostream &indent(std::ostream &O, int size) {
+ return O << std::string(size, ' ');
+}
+
+/// ExprAST - Base class for all expression nodes.
+class ExprAST {
+ SourceLocation Loc;
+
+public:
+ int getLine() const { return Loc.Line; }
+ int getCol() const { return Loc.Col; }
+ ExprAST(SourceLocation Loc = CurLoc) : Loc(Loc) {}
+ virtual std::ostream &dump(std::ostream &out, int ind) {
+ return out << ':' << getLine() << ':' << getCol() << '\n';
+ }
+ virtual ~ExprAST() {}
+ virtual Value *Codegen() = 0;
+};
+
+/// NumberExprAST - Expression class for numeric literals like "1.0".
+class NumberExprAST : public ExprAST {
+ double Val;
+
+public:
+ NumberExprAST(double val) : Val(val) {}
+ virtual std::ostream &dump(std::ostream &out, int ind) {
+ return ExprAST::dump(out << Val, ind);
+ }
+ virtual Value *Codegen();
+};
+
+/// VariableExprAST - Expression class for referencing a variable, like "a".
+class VariableExprAST : public ExprAST {
+ std::string Name;
+
+public:
+ VariableExprAST(SourceLocation Loc, const std::string &name)
+ : ExprAST(Loc), Name(name) {}
+ const std::string &getName() const { return Name; }
+ virtual std::ostream &dump(std::ostream &out, int ind) {
+ return ExprAST::dump(out << Name, ind);
+ }
+ virtual Value *Codegen();
+};
+
+/// UnaryExprAST - Expression class for a unary operator.
+class UnaryExprAST : public ExprAST {
+ char Opcode;
+ ExprAST *Operand;
+
+public:
+ UnaryExprAST(char opcode, ExprAST *operand)
+ : Opcode(opcode), Operand(operand) {}
+ virtual std::ostream &dump(std::ostream &out, int ind) {
+ ExprAST::dump(out << "unary" << Opcode, ind);
+ Operand->dump(out, ind + 1);
+ return out;
+ }
+ virtual Value *Codegen();
+};
+
+/// BinaryExprAST - Expression class for a binary operator.
+class BinaryExprAST : public ExprAST {
+ char Op;
+ ExprAST *LHS, *RHS;
+
+public:
+ BinaryExprAST(SourceLocation Loc, char op, ExprAST *lhs, ExprAST *rhs)
+ : ExprAST(Loc), Op(op), LHS(lhs), RHS(rhs) {}
+ virtual std::ostream &dump(std::ostream &out, int ind) {
+ ExprAST::dump(out << "binary" << Op, ind);
+ LHS->dump(indent(out, ind) << "LHS:", ind + 1);
+ RHS->dump(indent(out, ind) << "RHS:", ind + 1);
+ return out;
+ }
+ virtual Value *Codegen();
+};
+
+/// CallExprAST - Expression class for function calls.
+class CallExprAST : public ExprAST {
+ std::string Callee;
+ std::vector<ExprAST *> Args;
+
+public:
+ CallExprAST(SourceLocation Loc, const std::string &callee,
+ std::vector<ExprAST *> &args)
+ : ExprAST(Loc), Callee(callee), Args(args) {}
+ virtual std::ostream &dump(std::ostream &out, int ind) {
+ ExprAST::dump(out << "call " << Callee, ind);
+ for (ExprAST *Arg : Args)
+ Arg->dump(indent(out, ind + 1), ind + 1);
+ return out;
+ }
+ virtual Value *Codegen();
+};
+
+/// IfExprAST - Expression class for if/then/else.
+class IfExprAST : public ExprAST {
+ ExprAST *Cond, *Then, *Else;
+
+public:
+ IfExprAST(SourceLocation Loc, ExprAST *cond, ExprAST *then, ExprAST *_else)
+ : ExprAST(Loc), Cond(cond), Then(then), Else(_else) {}
+ virtual std::ostream &dump(std::ostream &out, int ind) {
+ ExprAST::dump(out << "if", ind);
+ Cond->dump(indent(out, ind) << "Cond:", ind + 1);
+ Then->dump(indent(out, ind) << "Then:", ind + 1);
+ Else->dump(indent(out, ind) << "Else:", ind + 1);
+ return out;
+ }
+ virtual Value *Codegen();
+};
+
+/// ForExprAST - Expression class for for/in.
+class ForExprAST : public ExprAST {
+ std::string VarName;
+ ExprAST *Start, *End, *Step, *Body;
+
+public:
+ ForExprAST(const std::string &varname, ExprAST *start, ExprAST *end,
+ ExprAST *step, ExprAST *body)
+ : VarName(varname), Start(start), End(end), Step(step), Body(body) {}
+ virtual std::ostream &dump(std::ostream &out, int ind) {
+ ExprAST::dump(out << "for", ind);
+ Start->dump(indent(out, ind) << "Cond:", ind + 1);
+ End->dump(indent(out, ind) << "End:", ind + 1);
+ Step->dump(indent(out, ind) << "Step:", ind + 1);
+ Body->dump(indent(out, ind) << "Body:", ind + 1);
+ return out;
+ }
+ virtual Value *Codegen();
+};
+
+/// VarExprAST - Expression class for var/in
+class VarExprAST : public ExprAST {
+ std::vector<std::pair<std::string, ExprAST *> > VarNames;
+ ExprAST *Body;
+
+public:
+ VarExprAST(const std::vector<std::pair<std::string, ExprAST *> > &varnames,
+ ExprAST *body)
+ : VarNames(varnames), Body(body) {}
+
+ virtual std::ostream &dump(std::ostream &out, int ind) {
+ ExprAST::dump(out << "var", ind);
+ for (const auto &NamedVar : VarNames)
+ NamedVar.second->dump(indent(out, ind) << NamedVar.first << ':', ind + 1);
+ Body->dump(indent(out, ind) << "Body:", ind + 1);
+ return out;
+ }
+ virtual Value *Codegen();
+};
+
+/// PrototypeAST - This class represents the "prototype" for a function,
+/// which captures its argument names as well as if it is an operator.
+class PrototypeAST {
+ std::string Name;
+ std::vector<std::string> Args;
+ bool isOperator;
+ unsigned Precedence; // Precedence if a binary op.
+ int Line;
+
+public:
+ PrototypeAST(SourceLocation Loc, const std::string &name,
+ const std::vector<std::string> &args, bool isoperator = false,
+ unsigned prec = 0)
+ : Name(name), Args(args), isOperator(isoperator), Precedence(prec),
+ Line(Loc.Line) {}
+
+ bool isUnaryOp() const { return isOperator && Args.size() == 1; }
+ bool isBinaryOp() const { return isOperator && Args.size() == 2; }
+
+ char getOperatorName() const {
+ assert(isUnaryOp() || isBinaryOp());
+ return Name[Name.size() - 1];
+ }
+
+ unsigned getBinaryPrecedence() const { return Precedence; }
+
+ Function *Codegen();
+
+ void CreateArgumentAllocas(Function *F);
+ const std::vector<std::string> &getArgs() const { return Args; }
+};
+
+/// FunctionAST - This class represents a function definition itself.
+class FunctionAST {
+ PrototypeAST *Proto;
+ ExprAST *Body;
+
+public:
+ FunctionAST(PrototypeAST *proto, ExprAST *body) : Proto(proto), Body(body) {}
+
+ std::ostream &dump(std::ostream &out, int ind) {
+ indent(out, ind) << "FunctionAST\n";
+ ++ind;
+ indent(out, ind) << "Body:";
+ return Body ? Body->dump(out, ind) : out << "null\n";
+ }
+
+ Function *Codegen();
+};
+} // end anonymous namespace
+
+//===----------------------------------------------------------------------===//
+// Parser
+//===----------------------------------------------------------------------===//
+
+/// CurTok/getNextToken - Provide a simple token buffer. CurTok is the current
+/// token the parser is looking at. getNextToken reads another token from the
+/// lexer and updates CurTok with its results.
+static int CurTok;
+static int getNextToken() { return CurTok = gettok(); }
+
+/// BinopPrecedence - This holds the precedence for each binary operator that is
+/// defined.
+static std::map<char, int> BinopPrecedence;
+
+/// GetTokPrecedence - Get the precedence of the pending binary operator token.
+static int GetTokPrecedence() {
+ if (!isascii(CurTok))
+ return -1;
+
+ // Make sure it's a declared binop.
+ int TokPrec = BinopPrecedence[CurTok];
+ if (TokPrec <= 0)
+ return -1;
+ return TokPrec;
+}
+
+/// Error* - These are little helper functions for error handling.
+ExprAST *Error(const char *Str) {
+ fprintf(stderr, "Error: %s\n", Str);
+ return 0;
+}
+PrototypeAST *ErrorP(const char *Str) {
+ Error(Str);
+ return 0;
+}
+FunctionAST *ErrorF(const char *Str) {
+ Error(Str);
+ return 0;
+}
+
+static ExprAST *ParseExpression();
+
+/// identifierexpr
+/// ::= identifier
+/// ::= identifier '(' expression* ')'
+static ExprAST *ParseIdentifierExpr() {
+ std::string IdName = IdentifierStr;
+
+ SourceLocation LitLoc = CurLoc;
+
+ getNextToken(); // eat identifier.
+
+ if (CurTok != '(') // Simple variable ref.
+ return new VariableExprAST(LitLoc, IdName);
+
+ // Call.
+ getNextToken(); // eat (
+ std::vector<ExprAST *> Args;
+ if (CurTok != ')') {
+ while (1) {
+ ExprAST *Arg = ParseExpression();
+ if (!Arg)
+ return 0;
+ Args.push_back(Arg);
+
+ if (CurTok == ')')
+ break;
+
+ if (CurTok != ',')
+ return Error("Expected ')' or ',' in argument list");
+ getNextToken();
+ }
+ }
+
+ // Eat the ')'.
+ getNextToken();
+
+ return new CallExprAST(LitLoc, IdName, Args);
+}
+
+/// numberexpr ::= number
+static ExprAST *ParseNumberExpr() {
+ ExprAST *Result = new NumberExprAST(NumVal);
+ getNextToken(); // consume the number
+ return Result;
+}
+
+/// parenexpr ::= '(' expression ')'
+static ExprAST *ParseParenExpr() {
+ getNextToken(); // eat (.
+ ExprAST *V = ParseExpression();
+ if (!V)
+ return 0;
+
+ if (CurTok != ')')
+ return Error("expected ')'");
+ getNextToken(); // eat ).
+ return V;
+}
+
+/// ifexpr ::= 'if' expression 'then' expression 'else' expression
+static ExprAST *ParseIfExpr() {
+ SourceLocation IfLoc = CurLoc;
+
+ getNextToken(); // eat the if.
+
+ // condition.
+ ExprAST *Cond = ParseExpression();
+ if (!Cond)
+ return 0;
+
+ if (CurTok != tok_then)
+ return Error("expected then");
+ getNextToken(); // eat the then
+
+ ExprAST *Then = ParseExpression();
+ if (Then == 0)
+ return 0;
+
+ if (CurTok != tok_else)
+ return Error("expected else");
+
+ getNextToken();
+
+ ExprAST *Else = ParseExpression();
+ if (!Else)
+ return 0;
+
+ return new IfExprAST(IfLoc, Cond, Then, Else);
+}
+
+/// forexpr ::= 'for' identifier '=' expr ',' expr (',' expr)? 'in' expression
+static ExprAST *ParseForExpr() {
+ getNextToken(); // eat the for.
+
+ if (CurTok != tok_identifier)
+ return Error("expected identifier after for");
+
+ std::string IdName = IdentifierStr;
+ getNextToken(); // eat identifier.
+
+ if (CurTok != '=')
+ return Error("expected '=' after for");
+ getNextToken(); // eat '='.
+
+ ExprAST *Start = ParseExpression();
+ if (Start == 0)
+ return 0;
+ if (CurTok != ',')
+ return Error("expected ',' after for start value");
+ getNextToken();
+
+ ExprAST *End = ParseExpression();
+ if (End == 0)
+ return 0;
+
+ // The step value is optional.
+ ExprAST *Step = 0;
+ if (CurTok == ',') {
+ getNextToken();
+ Step = ParseExpression();
+ if (Step == 0)
+ return 0;
+ }
+
+ if (CurTok != tok_in)
+ return Error("expected 'in' after for");
+ getNextToken(); // eat 'in'.
+
+ ExprAST *Body = ParseExpression();
+ if (Body == 0)
+ return 0;
+
+ return new ForExprAST(IdName, Start, End, Step, Body);
+}
+
+/// varexpr ::= 'var' identifier ('=' expression)?
+// (',' identifier ('=' expression)?)* 'in' expression
+static ExprAST *ParseVarExpr() {
+ getNextToken(); // eat the var.
+
+ std::vector<std::pair<std::string, ExprAST *> > VarNames;
+
+ // At least one variable name is required.
+ if (CurTok != tok_identifier)
+ return Error("expected identifier after var");
+
+ while (1) {
+ std::string Name = IdentifierStr;
+ getNextToken(); // eat identifier.
+
+ // Read the optional initializer.
+ ExprAST *Init = 0;
+ if (CurTok == '=') {
+ getNextToken(); // eat the '='.
+
+ Init = ParseExpression();
+ if (Init == 0)
+ return 0;
+ }
+
+ VarNames.push_back(std::make_pair(Name, Init));
+
+ // End of var list, exit loop.
+ if (CurTok != ',')
+ break;
+ getNextToken(); // eat the ','.
+
+ if (CurTok != tok_identifier)
+ return Error("expected identifier list after var");
+ }
+
+ // At this point, we have to have 'in'.
+ if (CurTok != tok_in)
+ return Error("expected 'in' keyword after 'var'");
+ getNextToken(); // eat 'in'.
+
+ ExprAST *Body = ParseExpression();
+ if (Body == 0)
+ return 0;
+
+ return new VarExprAST(VarNames, Body);
+}
+
+/// primary
+/// ::= identifierexpr
+/// ::= numberexpr
+/// ::= parenexpr
+/// ::= ifexpr
+/// ::= forexpr
+/// ::= varexpr
+static ExprAST *ParsePrimary() {
+ switch (CurTok) {
+ default:
+ return Error("unknown token when expecting an expression");
+ case tok_identifier:
+ return ParseIdentifierExpr();
+ case tok_number:
+ return ParseNumberExpr();
+ case '(':
+ return ParseParenExpr();
+ case tok_if:
+ return ParseIfExpr();
+ case tok_for:
+ return ParseForExpr();
+ case tok_var:
+ return ParseVarExpr();
+ }
+}
+
+/// unary
+/// ::= primary
+/// ::= '!' unary
+static ExprAST *ParseUnary() {
+ // If the current token is not an operator, it must be a primary expr.
+ if (!isascii(CurTok) || CurTok == '(' || CurTok == ',')
+ return ParsePrimary();
+
+ // If this is a unary operator, read it.
+ int Opc = CurTok;
+ getNextToken();
+ if (ExprAST *Operand = ParseUnary())
+ return new UnaryExprAST(Opc, Operand);
+ return 0;
+}
+
+/// binoprhs
+/// ::= ('+' unary)*
+static ExprAST *ParseBinOpRHS(int ExprPrec, ExprAST *LHS) {
+ // If this is a binop, find its precedence.
+ while (1) {
+ int TokPrec = GetTokPrecedence();
+
+ // If this is a binop that binds at least as tightly as the current binop,
+ // consume it, otherwise we are done.
+ if (TokPrec < ExprPrec)
+ return LHS;
+
+ // Okay, we know this is a binop.
+ int BinOp = CurTok;
+ SourceLocation BinLoc = CurLoc;
+ getNextToken(); // eat binop
+
+ // Parse the unary expression after the binary operator.
+ ExprAST *RHS = ParseUnary();
+ if (!RHS)
+ return 0;
+
+ // If BinOp binds less tightly with RHS than the operator after RHS, let
+ // the pending operator take RHS as its LHS.
+ int NextPrec = GetTokPrecedence();
+ if (TokPrec < NextPrec) {
+ RHS = ParseBinOpRHS(TokPrec + 1, RHS);
+ if (RHS == 0)
+ return 0;
+ }
+
+ // Merge LHS/RHS.
+ LHS = new BinaryExprAST(BinLoc, BinOp, LHS, RHS);
+ }
+}
+
+/// expression
+/// ::= unary binoprhs
+///
+static ExprAST *ParseExpression() {
+ ExprAST *LHS = ParseUnary();
+ if (!LHS)
+ return 0;
+
+ return ParseBinOpRHS(0, LHS);
+}
+
+/// prototype
+/// ::= id '(' id* ')'
+/// ::= binary LETTER number? (id, id)
+/// ::= unary LETTER (id)
+static PrototypeAST *ParsePrototype() {
+ std::string FnName;
+
+ SourceLocation FnLoc = CurLoc;
+
+ unsigned Kind = 0; // 0 = identifier, 1 = unary, 2 = binary.
+ unsigned BinaryPrecedence = 30;
+
+ switch (CurTok) {
+ default:
+ return ErrorP("Expected function name in prototype");
+ case tok_identifier:
+ FnName = IdentifierStr;
+ Kind = 0;
+ getNextToken();
+ break;
+ case tok_unary:
+ getNextToken();
+ if (!isascii(CurTok))
+ return ErrorP("Expected unary operator");
+ FnName = "unary";
+ FnName += (char)CurTok;
+ Kind = 1;
+ getNextToken();
+ break;
+ case tok_binary:
+ getNextToken();
+ if (!isascii(CurTok))
+ return ErrorP("Expected binary operator");
+ FnName = "binary";
+ FnName += (char)CurTok;
+ Kind = 2;
+ getNextToken();
+
+ // Read the precedence if present.
+ if (CurTok == tok_number) {
+ if (NumVal < 1 || NumVal > 100)
+ return ErrorP("Invalid precedecnce: must be 1..100");
+ BinaryPrecedence = (unsigned)NumVal;
+ getNextToken();
+ }
+ break;
+ }
+
+ if (CurTok != '(')
+ return ErrorP("Expected '(' in prototype");
+
+ std::vector<std::string> ArgNames;
+ while (getNextToken() == tok_identifier)
+ ArgNames.push_back(IdentifierStr);
+ if (CurTok != ')')
+ return ErrorP("Expected ')' in prototype");
+
+ // success.
+ getNextToken(); // eat ')'.
+
+ // Verify right number of names for operator.
+ if (Kind && ArgNames.size() != Kind)
+ return ErrorP("Invalid number of operands for operator");
+
+ return new PrototypeAST(FnLoc, FnName, ArgNames, Kind != 0, BinaryPrecedence);
+}
+
+/// definition ::= 'def' prototype expression
+static FunctionAST *ParseDefinition() {
+ getNextToken(); // eat def.
+ PrototypeAST *Proto = ParsePrototype();
+ if (Proto == 0)
+ return 0;
+
+ if (ExprAST *E = ParseExpression())
+ return new FunctionAST(Proto, E);
+ return 0;
+}
+
+/// toplevelexpr ::= expression
+static FunctionAST *ParseTopLevelExpr() {
+ SourceLocation FnLoc = CurLoc;
+ if (ExprAST *E = ParseExpression()) {
+ // Make an anonymous proto.
+ PrototypeAST *Proto =
+ new PrototypeAST(FnLoc, "main", std::vector<std::string>());
+ return new FunctionAST(Proto, E);
+ }
+ return 0;
+}
+
+/// external ::= 'extern' prototype
+static PrototypeAST *ParseExtern() {
+ getNextToken(); // eat extern.
+ return ParsePrototype();
+}
+
+//===----------------------------------------------------------------------===//
+// Debug Info Support
+//===----------------------------------------------------------------------===//
+
+static DIBuilder *DBuilder;
+
+DIType DebugInfo::getDoubleTy() {
+ if (DblTy.isValid())
+ return DblTy;
+
+ DblTy = DBuilder->createBasicType("double", 64, 64, dwarf::DW_ATE_float);
+ return DblTy;
+}
+
+void DebugInfo::emitLocation(ExprAST *AST) {
+ if (!AST)
+ return Builder.SetCurrentDebugLocation(DebugLoc());
+ DIScope *Scope;
+ if (LexicalBlocks.empty())
+ Scope = &TheCU;
+ else
+ Scope = LexicalBlocks.back();
+ Builder.SetCurrentDebugLocation(
+ DebugLoc::get(AST->getLine(), AST->getCol(), DIScope(*Scope)));
+}
+
+static DICompositeType CreateFunctionType(unsigned NumArgs, DIFile Unit) {
+ SmallVector<Metadata *, 8> EltTys;
+ DIType DblTy = KSDbgInfo.getDoubleTy();
+
+ // Add the result type.
+ EltTys.push_back(DblTy);
+
+ for (unsigned i = 0, e = NumArgs; i != e; ++i)
+ EltTys.push_back(DblTy);
+
+ DITypeArray EltTypeArray = DBuilder->getOrCreateTypeArray(EltTys);
+ return DBuilder->createSubroutineType(Unit, EltTypeArray);
+}
+
+//===----------------------------------------------------------------------===//
+// Code Generation
+//===----------------------------------------------------------------------===//
+
+static Module *TheModule;
+static std::map<std::string, AllocaInst *> NamedValues;
+static legacy::FunctionPassManager *TheFPM;
+
+Value *ErrorV(const char *Str) {
+ Error(Str);
+ return 0;
+}
+
+/// CreateEntryBlockAlloca - Create an alloca instruction in the entry block of
+/// the function. This is used for mutable variables etc.
+static AllocaInst *CreateEntryBlockAlloca(Function *TheFunction,
+ const std::string &VarName) {
+ IRBuilder<> TmpB(&TheFunction->getEntryBlock(),
+ TheFunction->getEntryBlock().begin());
+ return TmpB.CreateAlloca(Type::getDoubleTy(getGlobalContext()), 0,
+ VarName.c_str());
+}
+
+Value *NumberExprAST::Codegen() {
+ KSDbgInfo.emitLocation(this);
+ return ConstantFP::get(getGlobalContext(), APFloat(Val));
+}
+
+Value *VariableExprAST::Codegen() {
+ // Look this variable up in the function.
+ Value *V = NamedValues[Name];
+ if (V == 0)
+ return ErrorV("Unknown variable name");
+
+ KSDbgInfo.emitLocation(this);
+ // Load the value.
+ return Builder.CreateLoad(V, Name.c_str());
+}
+
+Value *UnaryExprAST::Codegen() {
+ Value *OperandV = Operand->Codegen();
+ if (OperandV == 0)
+ return 0;
+
+ Function *F = TheModule->getFunction(std::string("unary") + Opcode);
+ if (F == 0)
+ return ErrorV("Unknown unary operator");
+
+ KSDbgInfo.emitLocation(this);
+ return Builder.CreateCall(F, OperandV, "unop");
+}
+
+Value *BinaryExprAST::Codegen() {
+ KSDbgInfo.emitLocation(this);
+
+ // Special case '=' because we don't want to emit the LHS as an expression.
+ if (Op == '=') {
+ // Assignment requires the LHS to be an identifier.
+ VariableExprAST *LHSE = dynamic_cast<VariableExprAST *>(LHS);
+ if (!LHSE)
+ return ErrorV("destination of '=' must be a variable");
+ // Codegen the RHS.
+ Value *Val = RHS->Codegen();
+ if (Val == 0)
+ return 0;
+
+ // Look up the name.
+ Value *Variable = NamedValues[LHSE->getName()];
+ if (Variable == 0)
+ return ErrorV("Unknown variable name");
+
+ Builder.CreateStore(Val, Variable);
+ return Val;
+ }
+
+ Value *L = LHS->Codegen();
+ Value *R = RHS->Codegen();
+ if (L == 0 || R == 0)
+ return 0;
+
+ switch (Op) {
+ case '+':
+ return Builder.CreateFAdd(L, R, "addtmp");
+ case '-':
+ return Builder.CreateFSub(L, R, "subtmp");
+ case '*':
+ return Builder.CreateFMul(L, R, "multmp");
+ case '<':
+ L = Builder.CreateFCmpULT(L, R, "cmptmp");
+ // Convert bool 0/1 to double 0.0 or 1.0
+ return Builder.CreateUIToFP(L, Type::getDoubleTy(getGlobalContext()),
+ "booltmp");
+ default:
+ break;
+ }
+
+ // If it wasn't a builtin binary operator, it must be a user defined one. Emit
+ // a call to it.
+ Function *F = TheModule->getFunction(std::string("binary") + Op);
+ assert(F && "binary operator not found!");
+
+ Value *Ops[] = { L, R };
+ return Builder.CreateCall(F, Ops, "binop");
+}
+
+Value *CallExprAST::Codegen() {
+ KSDbgInfo.emitLocation(this);
+
+ // Look up the name in the global module table.
+ Function *CalleeF = TheModule->getFunction(Callee);
+ if (CalleeF == 0)
+ return ErrorV("Unknown function referenced");
+
+ // If argument mismatch error.
+ if (CalleeF->arg_size() != Args.size())
+ return ErrorV("Incorrect # arguments passed");
+
+ std::vector<Value *> ArgsV;
+ for (unsigned i = 0, e = Args.size(); i != e; ++i) {
+ ArgsV.push_back(Args[i]->Codegen());
+ if (ArgsV.back() == 0)
+ return 0;
+ }
+
+ return Builder.CreateCall(CalleeF, ArgsV, "calltmp");
+}
+
+Value *IfExprAST::Codegen() {
+ KSDbgInfo.emitLocation(this);
+
+ Value *CondV = Cond->Codegen();
+ if (CondV == 0)
+ return 0;
+
+ // Convert condition to a bool by comparing equal to 0.0.
+ CondV = Builder.CreateFCmpONE(
+ CondV, ConstantFP::get(getGlobalContext(), APFloat(0.0)), "ifcond");
+
+ Function *TheFunction = Builder.GetInsertBlock()->getParent();
+
+ // Create blocks for the then and else cases. Insert the 'then' block at the
+ // end of the function.
+ BasicBlock *ThenBB =
+ BasicBlock::Create(getGlobalContext(), "then", TheFunction);
+ BasicBlock *ElseBB = BasicBlock::Create(getGlobalContext(), "else");
+ BasicBlock *MergeBB = BasicBlock::Create(getGlobalContext(), "ifcont");
+
+ Builder.CreateCondBr(CondV, ThenBB, ElseBB);
+
+ // Emit then value.
+ Builder.SetInsertPoint(ThenBB);
+
+ Value *ThenV = Then->Codegen();
+ if (ThenV == 0)
+ return 0;
+
+ Builder.CreateBr(MergeBB);
+ // Codegen of 'Then' can change the current block, update ThenBB for the PHI.
+ ThenBB = Builder.GetInsertBlock();
+
+ // Emit else block.
+ TheFunction->getBasicBlockList().push_back(ElseBB);
+ Builder.SetInsertPoint(ElseBB);
+
+ Value *ElseV = Else->Codegen();
+ if (ElseV == 0)
+ return 0;
+
+ Builder.CreateBr(MergeBB);
+ // Codegen of 'Else' can change the current block, update ElseBB for the PHI.
+ ElseBB = Builder.GetInsertBlock();
+
+ // Emit merge block.
+ TheFunction->getBasicBlockList().push_back(MergeBB);
+ Builder.SetInsertPoint(MergeBB);
+ PHINode *PN =
+ Builder.CreatePHI(Type::getDoubleTy(getGlobalContext()), 2, "iftmp");
+
+ PN->addIncoming(ThenV, ThenBB);
+ PN->addIncoming(ElseV, ElseBB);
+ return PN;
+}
+
+Value *ForExprAST::Codegen() {
+ // Output this as:
+ // var = alloca double
+ // ...
+ // start = startexpr
+ // store start -> var
+ // goto loop
+ // loop:
+ // ...
+ // bodyexpr
+ // ...
+ // loopend:
+ // step = stepexpr
+ // endcond = endexpr
+ //
+ // curvar = load var
+ // nextvar = curvar + step
+ // store nextvar -> var
+ // br endcond, loop, endloop
+ // outloop:
+
+ Function *TheFunction = Builder.GetInsertBlock()->getParent();
+
+ // Create an alloca for the variable in the entry block.
+ AllocaInst *Alloca = CreateEntryBlockAlloca(TheFunction, VarName);
+
+ KSDbgInfo.emitLocation(this);
+
+ // Emit the start code first, without 'variable' in scope.
+ Value *StartVal = Start->Codegen();
+ if (StartVal == 0)
+ return 0;
+
+ // Store the value into the alloca.
+ Builder.CreateStore(StartVal, Alloca);
+
+ // Make the new basic block for the loop header, inserting after current
+ // block.
+ BasicBlock *LoopBB =
+ BasicBlock::Create(getGlobalContext(), "loop", TheFunction);
+
+ // Insert an explicit fall through from the current block to the LoopBB.
+ Builder.CreateBr(LoopBB);
+
+ // Start insertion in LoopBB.
+ Builder.SetInsertPoint(LoopBB);
+
+ // Within the loop, the variable is defined equal to the PHI node. If it
+ // shadows an existing variable, we have to restore it, so save it now.
+ AllocaInst *OldVal = NamedValues[VarName];
+ NamedValues[VarName] = Alloca;
+
+ // Emit the body of the loop. This, like any other expr, can change the
+ // current BB. Note that we ignore the value computed by the body, but don't
+ // allow an error.
+ if (Body->Codegen() == 0)
+ return 0;
+
+ // Emit the step value.
+ Value *StepVal;
+ if (Step) {
+ StepVal = Step->Codegen();
+ if (StepVal == 0)
+ return 0;
+ } else {
+ // If not specified, use 1.0.
+ StepVal = ConstantFP::get(getGlobalContext(), APFloat(1.0));
+ }
+
+ // Compute the end condition.
+ Value *EndCond = End->Codegen();
+ if (EndCond == 0)
+ return EndCond;
+
+ // Reload, increment, and restore the alloca. This handles the case where
+ // the body of the loop mutates the variable.
+ Value *CurVar = Builder.CreateLoad(Alloca, VarName.c_str());
+ Value *NextVar = Builder.CreateFAdd(CurVar, StepVal, "nextvar");
+ Builder.CreateStore(NextVar, Alloca);
+
+ // Convert condition to a bool by comparing equal to 0.0.
+ EndCond = Builder.CreateFCmpONE(
+ EndCond, ConstantFP::get(getGlobalContext(), APFloat(0.0)), "loopcond");
+
+ // Create the "after loop" block and insert it.
+ BasicBlock *AfterBB =
+ BasicBlock::Create(getGlobalContext(), "afterloop", TheFunction);
+
+ // Insert the conditional branch into the end of LoopEndBB.
+ Builder.CreateCondBr(EndCond, LoopBB, AfterBB);
+
+ // Any new code will be inserted in AfterBB.
+ Builder.SetInsertPoint(AfterBB);
+
+ // Restore the unshadowed variable.
+ if (OldVal)
+ NamedValues[VarName] = OldVal;
+ else
+ NamedValues.erase(VarName);
+
+ // for expr always returns 0.0.
+ return Constant::getNullValue(Type::getDoubleTy(getGlobalContext()));
+}
+
+Value *VarExprAST::Codegen() {
+ std::vector<AllocaInst *> OldBindings;
+
+ Function *TheFunction = Builder.GetInsertBlock()->getParent();
+
+ // Register all variables and emit their initializer.
+ for (unsigned i = 0, e = VarNames.size(); i != e; ++i) {
+ const std::string &VarName = VarNames[i].first;
+ ExprAST *Init = VarNames[i].second;
+
+ // Emit the initializer before adding the variable to scope, this prevents
+ // the initializer from referencing the variable itself, and permits stuff
+ // like this:
+ // var a = 1 in
+ // var a = a in ... # refers to outer 'a'.
+ Value *InitVal;
+ if (Init) {
+ InitVal = Init->Codegen();
+ if (InitVal == 0)
+ return 0;
+ } else { // If not specified, use 0.0.
+ InitVal = ConstantFP::get(getGlobalContext(), APFloat(0.0));
+ }
+
+ AllocaInst *Alloca = CreateEntryBlockAlloca(TheFunction, VarName);
+ Builder.CreateStore(InitVal, Alloca);
+
+ // Remember the old variable binding so that we can restore the binding when
+ // we unrecurse.
+ OldBindings.push_back(NamedValues[VarName]);
+
+ // Remember this binding.
+ NamedValues[VarName] = Alloca;
+ }
+
+ KSDbgInfo.emitLocation(this);
+
+ // Codegen the body, now that all vars are in scope.
+ Value *BodyVal = Body->Codegen();
+ if (BodyVal == 0)
+ return 0;
+
+ // Pop all our variables from scope.
+ for (unsigned i = 0, e = VarNames.size(); i != e; ++i)
+ NamedValues[VarNames[i].first] = OldBindings[i];
+
+ // Return the body computation.
+ return BodyVal;
+}
+
+Function *PrototypeAST::Codegen() {
+ // Make the function type: double(double,double) etc.
+ std::vector<Type *> Doubles(Args.size(),
+ Type::getDoubleTy(getGlobalContext()));
+ FunctionType *FT =
+ FunctionType::get(Type::getDoubleTy(getGlobalContext()), Doubles, false);
+
+ Function *F =
+ Function::Create(FT, Function::ExternalLinkage, Name, TheModule);
+
+ // If F conflicted, there was already something named 'Name'. If it has a
+ // body, don't allow redefinition or reextern.
+ if (F->getName() != Name) {
+ // Delete the one we just made and get the existing one.
+ F->eraseFromParent();
+ F = TheModule->getFunction(Name);
+
+ // If F already has a body, reject this.
+ if (!F->empty()) {
+ ErrorF("redefinition of function");
+ return 0;
+ }
+
+ // If F took a different number of args, reject.
+ if (F->arg_size() != Args.size()) {
+ ErrorF("redefinition of function with different # args");
+ return 0;
+ }
+ }
+
+ // Set names for all arguments.
+ unsigned Idx = 0;
+ for (Function::arg_iterator AI = F->arg_begin(); Idx != Args.size();
+ ++AI, ++Idx)
+ AI->setName(Args[Idx]);
+
+ // Create a subprogram DIE for this function.
+ DIFile Unit = DBuilder->createFile(KSDbgInfo.TheCU.getFilename(),
+ KSDbgInfo.TheCU.getDirectory());
+ DIDescriptor FContext(Unit);
+ unsigned LineNo = Line;
+ unsigned ScopeLine = Line;
+ DISubprogram SP = DBuilder->createFunction(
+ FContext, Name, StringRef(), Unit, LineNo,
+ CreateFunctionType(Args.size(), Unit), false /* internal linkage */,
+ true /* definition */, ScopeLine, DIDescriptor::FlagPrototyped, false, F);
+
+ KSDbgInfo.FnScopeMap[this] = SP;
+ return F;
+}
+
+/// CreateArgumentAllocas - Create an alloca for each argument and register the
+/// argument in the symbol table so that references to it will succeed.
+void PrototypeAST::CreateArgumentAllocas(Function *F) {
+ Function::arg_iterator AI = F->arg_begin();
+ for (unsigned Idx = 0, e = Args.size(); Idx != e; ++Idx, ++AI) {
+ // Create an alloca for this variable.
+ AllocaInst *Alloca = CreateEntryBlockAlloca(F, Args[Idx]);
+
+ // Create a debug descriptor for the variable.
+ DIScope *Scope = KSDbgInfo.LexicalBlocks.back();
+ DIFile Unit = DBuilder->createFile(KSDbgInfo.TheCU.getFilename(),
+ KSDbgInfo.TheCU.getDirectory());
+ DIVariable D = DBuilder->createLocalVariable(dwarf::DW_TAG_arg_variable,
+ *Scope, Args[Idx], Unit, Line,
+ KSDbgInfo.getDoubleTy(), Idx);
+
+ Instruction *Call = DBuilder->insertDeclare(
+ Alloca, D, DBuilder->createExpression(), Builder.GetInsertBlock());
+ Call->setDebugLoc(DebugLoc::get(Line, 0, *Scope));
+
+ // Store the initial value into the alloca.
+ Builder.CreateStore(AI, Alloca);
+
+ // Add arguments to variable symbol table.
+ NamedValues[Args[Idx]] = Alloca;
+ }
+}
+
+Function *FunctionAST::Codegen() {
+ NamedValues.clear();
+
+ Function *TheFunction = Proto->Codegen();
+ if (TheFunction == 0)
+ return 0;
+
+ // Push the current scope.
+ KSDbgInfo.LexicalBlocks.push_back(&KSDbgInfo.FnScopeMap[Proto]);
+
+ // Unset the location for the prologue emission (leading instructions with no
+ // location in a function are considered part of the prologue and the debugger
+ // will run past them when breaking on a function)
+ KSDbgInfo.emitLocation(nullptr);
+
+ // If this is an operator, install it.
+ if (Proto->isBinaryOp())
+ BinopPrecedence[Proto->getOperatorName()] = Proto->getBinaryPrecedence();
+
+ // Create a new basic block to start insertion into.
+ BasicBlock *BB = BasicBlock::Create(getGlobalContext(), "entry", TheFunction);
+ Builder.SetInsertPoint(BB);
+
+ // Add all arguments to the symbol table and create their allocas.
+ Proto->CreateArgumentAllocas(TheFunction);
+
+ KSDbgInfo.emitLocation(Body);
+
+ if (Value *RetVal = Body->Codegen()) {
+ // Finish off the function.
+ Builder.CreateRet(RetVal);
+
+ // Pop off the lexical block for the function.
+ KSDbgInfo.LexicalBlocks.pop_back();
+
+ // Validate the generated code, checking for consistency.
+ verifyFunction(*TheFunction);
+
+ // Optimize the function.
+ TheFPM->run(*TheFunction);
+
+ return TheFunction;
+ }
+
+ // Error reading body, remove function.
+ TheFunction->eraseFromParent();
+
+ if (Proto->isBinaryOp())
+ BinopPrecedence.erase(Proto->getOperatorName());
+
+ // Pop off the lexical block for the function since we added it
+ // unconditionally.
+ KSDbgInfo.LexicalBlocks.pop_back();
+
+ return 0;
+}
+
+//===----------------------------------------------------------------------===//
+// Top-Level parsing and JIT Driver
+//===----------------------------------------------------------------------===//
+
+static ExecutionEngine *TheExecutionEngine;
+
+static void HandleDefinition() {
+ if (FunctionAST *F = ParseDefinition()) {
+ if (!F->Codegen()) {
+ fprintf(stderr, "Error reading function definition:");
+ }
+ } else {
+ // Skip token for error recovery.
+ getNextToken();
+ }
+}
+
+static void HandleExtern() {
+ if (PrototypeAST *P = ParseExtern()) {
+ if (!P->Codegen()) {
+ fprintf(stderr, "Error reading extern");
+ }
+ } else {
+ // Skip token for error recovery.
+ getNextToken();
+ }
+}
+
+static void HandleTopLevelExpression() {
+ // Evaluate a top-level expression into an anonymous function.
+ if (FunctionAST *F = ParseTopLevelExpr()) {
+ if (!F->Codegen()) {
+ fprintf(stderr, "Error generating code for top level expr");
+ }
+ } else {
+ // Skip token for error recovery.
+ getNextToken();
+ }
+}
+
+/// top ::= definition | external | expression | ';'
+static void MainLoop() {
+ while (1) {
+ switch (CurTok) {
+ case tok_eof:
+ return;
+ case ';':
+ getNextToken();
+ break; // ignore top-level semicolons.
+ case tok_def:
+ HandleDefinition();
+ break;
+ case tok_extern:
+ HandleExtern();
+ break;
+ default:
+ HandleTopLevelExpression();
+ break;
+ }
+ }
+}
+
+//===----------------------------------------------------------------------===//
+// "Library" functions that can be "extern'd" from user code.
+//===----------------------------------------------------------------------===//
+
+/// putchard - putchar that takes a double and returns 0.
+extern "C" double putchard(double X) {
+ putchar((char)X);
+ return 0;
+}
+
+/// printd - printf that takes a double prints it as "%f\n", returning 0.
+extern "C" double printd(double X) {
+ printf("%f\n", X);
+ return 0;
+}
+
+//===----------------------------------------------------------------------===//
+// Main driver code.
+//===----------------------------------------------------------------------===//
+
+int main() {
+ InitializeNativeTarget();
+ InitializeNativeTargetAsmPrinter();
+ InitializeNativeTargetAsmParser();
+ LLVMContext &Context = getGlobalContext();
+
+ // Install standard binary operators.
+ // 1 is lowest precedence.
+ BinopPrecedence['='] = 2;
+ BinopPrecedence['<'] = 10;
+ BinopPrecedence['+'] = 20;
+ BinopPrecedence['-'] = 20;
+ BinopPrecedence['*'] = 40; // highest.
+
+ // Prime the first token.
+ getNextToken();
+
+ // Make the module, which holds all the code.
+ std::unique_ptr<Module> Owner = make_unique<Module>("my cool jit", Context);
+ TheModule = Owner.get();
+
+ // Add the current debug info version into the module.
+ TheModule->addModuleFlag(Module::Warning, "Debug Info Version",
+ DEBUG_METADATA_VERSION);
+
+ // Darwin only supports dwarf2.
+ if (Triple(sys::getProcessTriple()).isOSDarwin())
+ TheModule->addModuleFlag(llvm::Module::Warning, "Dwarf Version", 2);
+
+ // Construct the DIBuilder, we do this here because we need the module.
+ DBuilder = new DIBuilder(*TheModule);
+
+ // Create the compile unit for the module.
+ // Currently down as "fib.ks" as a filename since we're redirecting stdin
+ // but we'd like actual source locations.
+ KSDbgInfo.TheCU = DBuilder->createCompileUnit(
+ dwarf::DW_LANG_C, "fib.ks", ".", "Kaleidoscope Compiler", 0, "", 0);
+
+ // Create the JIT. This takes ownership of the module.
+ std::string ErrStr;
+ TheExecutionEngine =
+ EngineBuilder(std::move(Owner))
+ .setErrorStr(&ErrStr)
+ .setMCJITMemoryManager(llvm::make_unique<SectionMemoryManager>())
+ .create();
+ if (!TheExecutionEngine) {
+ fprintf(stderr, "Could not create ExecutionEngine: %s\n", ErrStr.c_str());
+ exit(1);
+ }
+
+ legacy::FunctionPassManager OurFPM(TheModule);
+
+ // Set up the optimizer pipeline. Start with registering info about how the
+ // target lays out data structures.
+ TheModule->setDataLayout(TheExecutionEngine->getDataLayout());
+ OurFPM.add(new DataLayoutPass());
+#if 0
+ // Provide basic AliasAnalysis support for GVN.
+ OurFPM.add(createBasicAliasAnalysisPass());
+ // Promote allocas to registers.
+ OurFPM.add(createPromoteMemoryToRegisterPass());
+ // Do simple "peephole" optimizations and bit-twiddling optzns.
+ OurFPM.add(createInstructionCombiningPass());
+ // Reassociate expressions.
+ OurFPM.add(createReassociatePass());
+ // Eliminate Common SubExpressions.
+ OurFPM.add(createGVNPass());
+ // Simplify the control flow graph (deleting unreachable blocks, etc).
+ OurFPM.add(createCFGSimplificationPass());
+ #endif
+ OurFPM.doInitialization();
+
+ // Set the global so the code gen can use this.
+ TheFPM = &OurFPM;
+
+ // Run the main "interpreter loop" now.
+ MainLoop();
+
+ TheFPM = 0;
+
+ // Finalize the debug info.
+ DBuilder->finalize();
+
+ // Print out all of the generated code.
+ TheModule->dump();
+
+ return 0;
+}
diff --git a/examples/Kaleidoscope/MCJIT/cached/toy-jit.cpp b/examples/Kaleidoscope/MCJIT/cached/toy-jit.cpp
index 00f5b83..7f5ed13 100644
--- a/examples/Kaleidoscope/MCJIT/cached/toy-jit.cpp
+++ b/examples/Kaleidoscope/MCJIT/cached/toy-jit.cpp
@@ -6,10 +6,10 @@
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/LegacyPassManager.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Verifier.h"
#include "llvm/IRReader/IRReader.h"
-#include "llvm/PassManager.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/SourceMgr.h"
#include "llvm/Support/TargetSelect.h"
diff --git a/examples/Kaleidoscope/MCJIT/cached/toy.cpp b/examples/Kaleidoscope/MCJIT/cached/toy.cpp
index af51b4a..f598ca4 100644
--- a/examples/Kaleidoscope/MCJIT/cached/toy.cpp
+++ b/examples/Kaleidoscope/MCJIT/cached/toy.cpp
@@ -9,10 +9,10 @@
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/LegacyPassManager.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Verifier.h"
#include "llvm/IRReader/IRReader.h"
-#include "llvm/PassManager.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Path.h"
@@ -36,8 +36,8 @@ InputIR("input-IR",
cl::desc("Specify the name of an IR file to load for function definitions"),
cl::value_desc("input IR file name"));
-cl::opt<bool>
-UseObjectCache("use-object-cache",
+cl::opt<bool>
+UseObjectCache("use-object-cache",
cl::desc("Enable use of the MCJIT object caching"),
cl::init(false));
@@ -55,14 +55,14 @@ enum Token {
// primary
tok_identifier = -4, tok_number = -5,
-
+
// control
tok_if = -6, tok_then = -7, tok_else = -8,
tok_for = -9, tok_in = -10,
-
+
// operators
tok_binary = -11, tok_unary = -12,
-
+
// var definition
tok_var = -13
};
@@ -111,11 +111,11 @@ static int gettok() {
// Comment until end of line.
do LastChar = getchar();
while (LastChar != EOF && LastChar != '\n' && LastChar != '\r');
-
+
if (LastChar != EOF)
return gettok();
}
-
+
// Check for end of file. Don't eat the EOF.
if (LastChar == EOF)
return tok_eof;
@@ -159,7 +159,7 @@ class UnaryExprAST : public ExprAST {
char Opcode;
ExprAST *Operand;
public:
- UnaryExprAST(char opcode, ExprAST *operand)
+ UnaryExprAST(char opcode, ExprAST *operand)
: Opcode(opcode), Operand(operand) {}
virtual Value *Codegen();
};
@@ -169,7 +169,7 @@ class BinaryExprAST : public ExprAST {
char Op;
ExprAST *LHS, *RHS;
public:
- BinaryExprAST(char op, ExprAST *lhs, ExprAST *rhs)
+ BinaryExprAST(char op, ExprAST *lhs, ExprAST *rhs)
: Op(op), LHS(lhs), RHS(rhs) {}
virtual Value *Codegen();
};
@@ -212,7 +212,7 @@ public:
VarExprAST(const std::vector<std::pair<std::string, ExprAST*> > &varnames,
ExprAST *body)
: VarNames(varnames), Body(body) {}
-
+
virtual Value *Codegen();
};
@@ -227,19 +227,19 @@ public:
PrototypeAST(const std::string &name, const std::vector<std::string> &args,
bool isoperator = false, unsigned prec = 0)
: Name(name), Args(args), isOperator(isoperator), Precedence(prec) {}
-
+
bool isUnaryOp() const { return isOperator && Args.size() == 1; }
bool isBinaryOp() const { return isOperator && Args.size() == 2; }
-
+
char getOperatorName() const {
assert(isUnaryOp() || isBinaryOp());
return Name[Name.size()-1];
}
-
+
unsigned getBinaryPrecedence() const { return Precedence; }
-
+
Function *Codegen();
-
+
void CreateArgumentAllocas(Function *F);
};
@@ -250,7 +250,7 @@ class FunctionAST {
public:
FunctionAST(PrototypeAST *proto, ExprAST *body)
: Proto(proto), Body(body) {}
-
+
Function *Codegen();
};
@@ -274,7 +274,7 @@ static std::map<char, int> BinopPrecedence;
static int GetTokPrecedence() {
if (!isascii(CurTok))
return -1;
-
+
// Make sure it's a declared binop.
int TokPrec = BinopPrecedence[CurTok];
if (TokPrec <= 0) return -1;
@@ -293,12 +293,12 @@ static ExprAST *ParseExpression();
/// ::= identifier '(' expression* ')'
static ExprAST *ParseIdentifierExpr() {
std::string IdName = IdentifierStr;
-
+
getNextToken(); // eat identifier.
-
+
if (CurTok != '(') // Simple variable ref.
return new VariableExprAST(IdName);
-
+
// Call.
getNextToken(); // eat (
std::vector<ExprAST*> Args;
@@ -318,7 +318,7 @@ static ExprAST *ParseIdentifierExpr() {
// Eat the ')'.
getNextToken();
-
+
return new CallExprAST(IdName, Args);
}
@@ -334,7 +334,7 @@ static ExprAST *ParseParenExpr() {
getNextToken(); // eat (.
ExprAST *V = ParseExpression();
if (!V) return 0;
-
+
if (CurTok != ')')
return Error("expected ')'");
getNextToken(); // eat ).
@@ -344,26 +344,26 @@ static ExprAST *ParseParenExpr() {
/// ifexpr ::= 'if' expression 'then' expression 'else' expression
static ExprAST *ParseIfExpr() {
getNextToken(); // eat the if.
-
+
// condition.
ExprAST *Cond = ParseExpression();
if (!Cond) return 0;
-
+
if (CurTok != tok_then)
return Error("expected then");
getNextToken(); // eat the then
-
+
ExprAST *Then = ParseExpression();
if (Then == 0) return 0;
-
+
if (CurTok != tok_else)
return Error("expected else");
-
+
getNextToken();
-
+
ExprAST *Else = ParseExpression();
if (!Else) return 0;
-
+
return new IfExprAST(Cond, Then, Else);
}
@@ -373,24 +373,24 @@ static ExprAST *ParseForExpr() {
if (CurTok != tok_identifier)
return Error("expected identifier after for");
-
+
std::string IdName = IdentifierStr;
getNextToken(); // eat identifier.
-
+
if (CurTok != '=')
return Error("expected '=' after for");
getNextToken(); // eat '='.
-
-
+
+
ExprAST *Start = ParseExpression();
if (Start == 0) return 0;
if (CurTok != ',')
return Error("expected ',' after for start value");
getNextToken();
-
+
ExprAST *End = ParseExpression();
if (End == 0) return 0;
-
+
// The step value is optional.
ExprAST *Step = 0;
if (CurTok == ',') {
@@ -398,18 +398,18 @@ static ExprAST *ParseForExpr() {
Step = ParseExpression();
if (Step == 0) return 0;
}
-
+
if (CurTok != tok_in)
return Error("expected 'in' after for");
getNextToken(); // eat 'in'.
-
+
ExprAST *Body = ParseExpression();
if (Body == 0) return 0;
return new ForExprAST(IdName, Start, End, Step, Body);
}
-/// varexpr ::= 'var' identifier ('=' expression)?
+/// varexpr ::= 'var' identifier ('=' expression)?
// (',' identifier ('=' expression)?)* 'in' expression
static ExprAST *ParseVarExpr() {
getNextToken(); // eat the var.
@@ -419,7 +419,7 @@ static ExprAST *ParseVarExpr() {
// At least one variable name is required.
if (CurTok != tok_identifier)
return Error("expected identifier after var");
-
+
while (1) {
std::string Name = IdentifierStr;
getNextToken(); // eat identifier.
@@ -428,29 +428,29 @@ static ExprAST *ParseVarExpr() {
ExprAST *Init = 0;
if (CurTok == '=') {
getNextToken(); // eat the '='.
-
+
Init = ParseExpression();
if (Init == 0) return 0;
}
-
+
VarNames.push_back(std::make_pair(Name, Init));
-
+
// End of var list, exit loop.
if (CurTok != ',') break;
getNextToken(); // eat the ','.
-
+
if (CurTok != tok_identifier)
return Error("expected identifier list after var");
}
-
+
// At this point, we have to have 'in'.
if (CurTok != tok_in)
return Error("expected 'in' keyword after 'var'");
getNextToken(); // eat 'in'.
-
+
ExprAST *Body = ParseExpression();
if (Body == 0) return 0;
-
+
return new VarExprAST(VarNames, Body);
}
@@ -480,7 +480,7 @@ static ExprAST *ParseUnary() {
// If the current token is not an operator, it must be a primary expr.
if (!isascii(CurTok) || CurTok == '(' || CurTok == ',')
return ParsePrimary();
-
+
// If this is a unary operator, read it.
int Opc = CurTok;
getNextToken();
@@ -495,20 +495,20 @@ static ExprAST *ParseBinOpRHS(int ExprPrec, ExprAST *LHS) {
// If this is a binop, find its precedence.
while (1) {
int TokPrec = GetTokPrecedence();
-
+
// If this is a binop that binds at least as tightly as the current binop,
// consume it, otherwise we are done.
if (TokPrec < ExprPrec)
return LHS;
-
+
// Okay, we know this is a binop.
int BinOp = CurTok;
getNextToken(); // eat binop
-
+
// Parse the unary expression after the binary operator.
ExprAST *RHS = ParseUnary();
if (!RHS) return 0;
-
+
// If BinOp binds less tightly with RHS than the operator after RHS, let
// the pending operator take RHS as its LHS.
int NextPrec = GetTokPrecedence();
@@ -516,7 +516,7 @@ static ExprAST *ParseBinOpRHS(int ExprPrec, ExprAST *LHS) {
RHS = ParseBinOpRHS(TokPrec+1, RHS);
if (RHS == 0) return 0;
}
-
+
// Merge LHS/RHS.
LHS = new BinaryExprAST(BinOp, LHS, RHS);
}
@@ -528,7 +528,7 @@ static ExprAST *ParseBinOpRHS(int ExprPrec, ExprAST *LHS) {
static ExprAST *ParseExpression() {
ExprAST *LHS = ParseUnary();
if (!LHS) return 0;
-
+
return ParseBinOpRHS(0, LHS);
}
@@ -538,10 +538,10 @@ static ExprAST *ParseExpression() {
/// ::= unary LETTER (id)
static PrototypeAST *ParsePrototype() {
std::string FnName;
-
+
unsigned Kind = 0; // 0 = identifier, 1 = unary, 2 = binary.
unsigned BinaryPrecedence = 30;
-
+
switch (CurTok) {
default:
return ErrorP("Expected function name in prototype");
@@ -567,7 +567,7 @@ static PrototypeAST *ParsePrototype() {
FnName += (char)CurTok;
Kind = 2;
getNextToken();
-
+
// Read the precedence if present.
if (CurTok == tok_number) {
if (NumVal < 1 || NumVal > 100)
@@ -577,23 +577,23 @@ static PrototypeAST *ParsePrototype() {
}
break;
}
-
+
if (CurTok != '(')
return ErrorP("Expected '(' in prototype");
-
+
std::vector<std::string> ArgNames;
while (getNextToken() == tok_identifier)
ArgNames.push_back(IdentifierStr);
if (CurTok != ')')
return ErrorP("Expected ')' in prototype");
-
+
// success.
getNextToken(); // eat ')'.
-
+
// Verify right number of names for operator.
if (Kind && ArgNames.size() != Kind)
return ErrorP("Invalid number of operands for operator");
-
+
return new PrototypeAST(FnName, ArgNames, Kind != 0, BinaryPrecedence);
}
@@ -762,14 +762,14 @@ private:
class HelpingMemoryManager : public SectionMemoryManager
{
- HelpingMemoryManager(const HelpingMemoryManager&) LLVM_DELETED_FUNCTION;
- void operator=(const HelpingMemoryManager&) LLVM_DELETED_FUNCTION;
+ HelpingMemoryManager(const HelpingMemoryManager&) = delete;
+ void operator=(const HelpingMemoryManager&) = delete;
public:
HelpingMemoryManager(MCJITHelper *Helper) : MasterHelper(Helper) {}
virtual ~HelpingMemoryManager() {}
- /// This method returns the address of the specified function.
+ /// This method returns the address of the specified function.
/// Our implementation will attempt to find functions in other
/// modules associated with the MCJITHelper to cross link functions
/// from one generated module to another.
@@ -838,9 +838,9 @@ Function *MCJITHelper::getFunction(const std::string FnName) {
// If we don't have a prototype yet, create one.
if (!PF)
- PF = Function::Create(F->getFunctionType(),
- Function::ExternalLinkage,
- FnName,
+ PF = Function::Create(F->getFunctionType(),
+ Function::ExternalLinkage,
+ FnName,
OpenModule);
return PF;
}
@@ -1027,11 +1027,11 @@ Value *VariableExprAST::Codegen() {
Value *UnaryExprAST::Codegen() {
Value *OperandV = Operand->Codegen();
if (OperandV == 0) return 0;
-
+
Function *F = TheHelper->getFunction(MakeLegalFunctionName(std::string("unary")+Opcode));
if (F == 0)
return ErrorV("Unknown unary operator");
-
+
return Builder.CreateCall(F, OperandV, "unop");
}
@@ -1053,11 +1053,11 @@ Value *BinaryExprAST::Codegen() {
Builder.CreateStore(Val, Variable);
return Val;
}
-
+
Value *L = LHS->Codegen();
Value *R = RHS->Codegen();
if (L == 0 || R == 0) return 0;
-
+
switch (Op) {
case '+': return Builder.CreateFAdd(L, R, "addtmp");
case '-': return Builder.CreateFSub(L, R, "subtmp");
@@ -1070,12 +1070,12 @@ Value *BinaryExprAST::Codegen() {
"booltmp");
default: break;
}
-
+
// If it wasn't a builtin binary operator, it must be a user defined one. Emit
// a call to it.
Function *F = TheHelper->getFunction(MakeLegalFunctionName(std::string("binary")+Op));
assert(F && "binary operator not found!");
-
+
Value *Ops[] = { L, R };
return Builder.CreateCall(F, Ops, "binop");
}
@@ -1085,7 +1085,7 @@ Value *CallExprAST::Codegen() {
Function *CalleeF = TheHelper->getFunction(Callee);
if (CalleeF == 0)
return ErrorV("Unknown function referenced");
-
+
// If argument mismatch error.
if (CalleeF->arg_size() != Args.size())
return ErrorV("Incorrect # arguments passed");
@@ -1095,56 +1095,56 @@ Value *CallExprAST::Codegen() {
ArgsV.push_back(Args[i]->Codegen());
if (ArgsV.back() == 0) return 0;
}
-
+
return Builder.CreateCall(CalleeF, ArgsV, "calltmp");
}
Value *IfExprAST::Codegen() {
Value *CondV = Cond->Codegen();
if (CondV == 0) return 0;
-
+
// Convert condition to a bool by comparing equal to 0.0.
- CondV = Builder.CreateFCmpONE(CondV,
+ CondV = Builder.CreateFCmpONE(CondV,
ConstantFP::get(getGlobalContext(), APFloat(0.0)),
"ifcond");
-
+
Function *TheFunction = Builder.GetInsertBlock()->getParent();
-
+
// Create blocks for the then and else cases. Insert the 'then' block at the
// end of the function.
BasicBlock *ThenBB = BasicBlock::Create(getGlobalContext(), "then", TheFunction);
BasicBlock *ElseBB = BasicBlock::Create(getGlobalContext(), "else");
BasicBlock *MergeBB = BasicBlock::Create(getGlobalContext(), "ifcont");
-
+
Builder.CreateCondBr(CondV, ThenBB, ElseBB);
-
+
// Emit then value.
Builder.SetInsertPoint(ThenBB);
-
+
Value *ThenV = Then->Codegen();
if (ThenV == 0) return 0;
-
+
Builder.CreateBr(MergeBB);
// Codegen of 'Then' can change the current block, update ThenBB for the PHI.
ThenBB = Builder.GetInsertBlock();
-
+
// Emit else block.
TheFunction->getBasicBlockList().push_back(ElseBB);
Builder.SetInsertPoint(ElseBB);
-
+
Value *ElseV = Else->Codegen();
if (ElseV == 0) return 0;
-
+
Builder.CreateBr(MergeBB);
// Codegen of 'Else' can change the current block, update ElseBB for the PHI.
ElseBB = Builder.GetInsertBlock();
-
+
// Emit merge block.
TheFunction->getBasicBlockList().push_back(MergeBB);
Builder.SetInsertPoint(MergeBB);
PHINode *PN = Builder.CreatePHI(Type::getDoubleTy(getGlobalContext()), 2,
"iftmp");
-
+
PN->addIncoming(ThenV, ThenBB);
PN->addIncoming(ElseV, ElseBB);
return PN;
@@ -1157,7 +1157,7 @@ Value *ForExprAST::Codegen() {
// start = startexpr
// store start -> var
// goto loop
- // loop:
+ // loop:
// ...
// bodyexpr
// ...
@@ -1170,40 +1170,40 @@ Value *ForExprAST::Codegen() {
// store nextvar -> var
// br endcond, loop, endloop
// outloop:
-
+
Function *TheFunction = Builder.GetInsertBlock()->getParent();
// Create an alloca for the variable in the entry block.
AllocaInst *Alloca = CreateEntryBlockAlloca(TheFunction, VarName);
-
+
// Emit the start code first, without 'variable' in scope.
Value *StartVal = Start->Codegen();
if (StartVal == 0) return 0;
-
+
// Store the value into the alloca.
Builder.CreateStore(StartVal, Alloca);
-
+
// Make the new basic block for the loop header, inserting after current
// block.
BasicBlock *LoopBB = BasicBlock::Create(getGlobalContext(), "loop", TheFunction);
-
+
// Insert an explicit fall through from the current block to the LoopBB.
Builder.CreateBr(LoopBB);
// Start insertion in LoopBB.
Builder.SetInsertPoint(LoopBB);
-
+
// Within the loop, the variable is defined equal to the PHI node. If it
// shadows an existing variable, we have to restore it, so save it now.
AllocaInst *OldVal = NamedValues[VarName];
NamedValues[VarName] = Alloca;
-
+
// Emit the body of the loop. This, like any other expr, can change the
// current BB. Note that we ignore the value computed by the body, but don't
// allow an error.
if (Body->Codegen() == 0)
return 0;
-
+
// Emit the step value.
Value *StepVal;
if (Step) {
@@ -1213,52 +1213,52 @@ Value *ForExprAST::Codegen() {
// If not specified, use 1.0.
StepVal = ConstantFP::get(getGlobalContext(), APFloat(1.0));
}
-
+
// Compute the end condition.
Value *EndCond = End->Codegen();
if (EndCond == 0) return EndCond;
-
+
// Reload, increment, and restore the alloca. This handles the case where
// the body of the loop mutates the variable.
Value *CurVar = Builder.CreateLoad(Alloca, VarName.c_str());
Value *NextVar = Builder.CreateFAdd(CurVar, StepVal, "nextvar");
Builder.CreateStore(NextVar, Alloca);
-
+
// Convert condition to a bool by comparing equal to 0.0.
- EndCond = Builder.CreateFCmpONE(EndCond,
+ EndCond = Builder.CreateFCmpONE(EndCond,
ConstantFP::get(getGlobalContext(), APFloat(0.0)),
"loopcond");
-
+
// Create the "after loop" block and insert it.
BasicBlock *AfterBB = BasicBlock::Create(getGlobalContext(), "afterloop", TheFunction);
-
+
// Insert the conditional branch into the end of LoopEndBB.
Builder.CreateCondBr(EndCond, LoopBB, AfterBB);
-
+
// Any new code will be inserted in AfterBB.
Builder.SetInsertPoint(AfterBB);
-
+
// Restore the unshadowed variable.
if (OldVal)
NamedValues[VarName] = OldVal;
else
NamedValues.erase(VarName);
-
+
// for expr always returns 0.0.
return Constant::getNullValue(Type::getDoubleTy(getGlobalContext()));
}
Value *VarExprAST::Codegen() {
std::vector<AllocaInst *> OldBindings;
-
+
Function *TheFunction = Builder.GetInsertBlock()->getParent();
// Register all variables and emit their initializer.
for (unsigned i = 0, e = VarNames.size(); i != e; ++i) {
const std::string &VarName = VarNames[i].first;
ExprAST *Init = VarNames[i].second;
-
+
// Emit the initializer before adding the variable to scope, this prevents
// the initializer from referencing the variable itself, and permits stuff
// like this:
@@ -1271,22 +1271,22 @@ Value *VarExprAST::Codegen() {
} else { // If not specified, use 0.0.
InitVal = ConstantFP::get(getGlobalContext(), APFloat(0.0));
}
-
+
AllocaInst *Alloca = CreateEntryBlockAlloca(TheFunction, VarName);
Builder.CreateStore(InitVal, Alloca);
// Remember the old variable binding so that we can restore the binding when
// we unrecurse.
OldBindings.push_back(NamedValues[VarName]);
-
+
// Remember this binding.
NamedValues[VarName] = Alloca;
}
-
+
// Codegen the body, now that all vars are in scope.
Value *BodyVal = Body->Codegen();
if (BodyVal == 0) return 0;
-
+
// Pop all our variables from scope.
for (unsigned i = 0, e = VarNames.size(); i != e; ++i)
NamedValues[VarNames[i].first] = OldBindings[i];
@@ -1297,7 +1297,7 @@ Value *VarExprAST::Codegen() {
Function *PrototypeAST::Codegen() {
// Make the function type: double(double,double) etc.
- std::vector<Type*> Doubles(Args.size(),
+ std::vector<Type*> Doubles(Args.size(),
Type::getDoubleTy(getGlobalContext()));
FunctionType *FT = FunctionType::get(Type::getDoubleTy(getGlobalContext()),
Doubles, false);
@@ -1314,26 +1314,26 @@ Function *PrototypeAST::Codegen() {
// Delete the one we just made and get the existing one.
F->eraseFromParent();
F = M->getFunction(Name);
-
+
// If F already has a body, reject this.
if (!F->empty()) {
ErrorF("redefinition of function");
return 0;
}
-
+
// If F took a different number of args, reject.
if (F->arg_size() != Args.size()) {
ErrorF("redefinition of function with different # args");
return 0;
}
}
-
+
// Set names for all arguments.
unsigned Idx = 0;
for (Function::arg_iterator AI = F->arg_begin(); Idx != Args.size();
++AI, ++Idx)
AI->setName(Args[Idx]);
-
+
return F;
}
@@ -1355,19 +1355,19 @@ void PrototypeAST::CreateArgumentAllocas(Function *F) {
Function *FunctionAST::Codegen() {
NamedValues.clear();
-
+
Function *TheFunction = Proto->Codegen();
if (TheFunction == 0)
return 0;
-
+
// If this is an operator, install it.
if (Proto->isBinaryOp())
BinopPrecedence[Proto->getOperatorName()] = Proto->getBinaryPrecedence();
-
+
// Create a new basic block to start insertion into.
BasicBlock *BB = BasicBlock::Create(getGlobalContext(), "entry", TheFunction);
Builder.SetInsertPoint(BB);
-
+
// Add all arguments to the symbol table and create their allocas.
Proto->CreateArgumentAllocas(TheFunction);
@@ -1428,7 +1428,7 @@ static void HandleTopLevelExpression() {
if (Function *LF = F->Codegen()) {
// JIT the function, returning a function pointer.
void *FPtr = TheHelper->getPointerToFunction(LF);
-
+
// Cast it to the right type (takes no arguments, returns a double) so we
// can call it as a native function.
double (*FP)() = (double (*)())(intptr_t)FPtr;
@@ -1465,20 +1465,20 @@ static void MainLoop() {
//===----------------------------------------------------------------------===//
/// putchard - putchar that takes a double and returns 0.
-extern "C"
+extern "C"
double putchard(double X) {
putchar((char)X);
return 0;
}
/// printd - printf that takes a double prints it as "%f\n", returning 0.
-extern "C"
+extern "C"
double printd(double X) {
printf("%f", X);
return 0;
}
-extern "C"
+extern "C"
double printlf() {
printf("\n");
return 0;
diff --git a/examples/Kaleidoscope/MCJIT/complete/toy.cpp b/examples/Kaleidoscope/MCJIT/complete/toy.cpp
index 3beb0d8..5294bb7 100644
--- a/examples/Kaleidoscope/MCJIT/complete/toy.cpp
+++ b/examples/Kaleidoscope/MCJIT/complete/toy.cpp
@@ -7,10 +7,10 @@
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/LegacyPassManager.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Verifier.h"
#include "llvm/IRReader/IRReader.h"
-#include "llvm/PassManager.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/FileSystem.h"
#include "llvm/Support/Path.h"
@@ -37,7 +37,7 @@ namespace {
cl::value_desc("input IR file name"));
cl::opt<bool>
- VerboseOutput("verbose",
+ VerboseOutput("verbose",
cl::desc("Enable verbose output (results, IR, etc.) to stderr"),
cl::init(false));
@@ -830,8 +830,8 @@ private:
class HelpingMemoryManager : public SectionMemoryManager
{
- HelpingMemoryManager(const HelpingMemoryManager&) LLVM_DELETED_FUNCTION;
- void operator=(const HelpingMemoryManager&) LLVM_DELETED_FUNCTION;
+ HelpingMemoryManager(const HelpingMemoryManager&) = delete;
+ void operator=(const HelpingMemoryManager&) = delete;
public:
HelpingMemoryManager(MCJITHelper *Helper) : MasterHelper(Helper) {}
diff --git a/examples/Kaleidoscope/MCJIT/initial/toy.cpp b/examples/Kaleidoscope/MCJIT/initial/toy.cpp
index 2c1b297..dd35358 100644
--- a/examples/Kaleidoscope/MCJIT/initial/toy.cpp
+++ b/examples/Kaleidoscope/MCJIT/initial/toy.cpp
@@ -6,9 +6,9 @@
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/LegacyPassManager.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Verifier.h"
-#include "llvm/PassManager.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Transforms/Scalar.h"
#include <cctype>
@@ -32,14 +32,14 @@ enum Token {
// primary
tok_identifier = -4, tok_number = -5,
-
+
// control
tok_if = -6, tok_then = -7, tok_else = -8,
tok_for = -9, tok_in = -10,
-
+
// operators
tok_binary = -11, tok_unary = -12,
-
+
// var definition
tok_var = -13
};
@@ -88,11 +88,11 @@ static int gettok() {
// Comment until end of line.
do LastChar = getchar();
while (LastChar != EOF && LastChar != '\n' && LastChar != '\r');
-
+
if (LastChar != EOF)
return gettok();
}
-
+
// Check for end of file. Don't eat the EOF.
if (LastChar == EOF)
return tok_eof;
@@ -136,7 +136,7 @@ class UnaryExprAST : public ExprAST {
char Opcode;
ExprAST *Operand;
public:
- UnaryExprAST(char opcode, ExprAST *operand)
+ UnaryExprAST(char opcode, ExprAST *operand)
: Opcode(opcode), Operand(operand) {}
virtual Value *Codegen();
};
@@ -146,7 +146,7 @@ class BinaryExprAST : public ExprAST {
char Op;
ExprAST *LHS, *RHS;
public:
- BinaryExprAST(char op, ExprAST *lhs, ExprAST *rhs)
+ BinaryExprAST(char op, ExprAST *lhs, ExprAST *rhs)
: Op(op), LHS(lhs), RHS(rhs) {}
virtual Value *Codegen();
};
@@ -189,7 +189,7 @@ public:
VarExprAST(const std::vector<std::pair<std::string, ExprAST*> > &varnames,
ExprAST *body)
: VarNames(varnames), Body(body) {}
-
+
virtual Value *Codegen();
};
@@ -204,19 +204,19 @@ public:
PrototypeAST(const std::string &name, const std::vector<std::string> &args,
bool isoperator = false, unsigned prec = 0)
: Name(name), Args(args), isOperator(isoperator), Precedence(prec) {}
-
+
bool isUnaryOp() const { return isOperator && Args.size() == 1; }
bool isBinaryOp() const { return isOperator && Args.size() == 2; }
-
+
char getOperatorName() const {
assert(isUnaryOp() || isBinaryOp());
return Name[Name.size()-1];
}
-
+
unsigned getBinaryPrecedence() const { return Precedence; }
-
+
Function *Codegen();
-
+
void CreateArgumentAllocas(Function *F);
};
@@ -227,7 +227,7 @@ class FunctionAST {
public:
FunctionAST(PrototypeAST *proto, ExprAST *body)
: Proto(proto), Body(body) {}
-
+
Function *Codegen();
};
@@ -251,7 +251,7 @@ static std::map<char, int> BinopPrecedence;
static int GetTokPrecedence() {
if (!isascii(CurTok))
return -1;
-
+
// Make sure it's a declared binop.
int TokPrec = BinopPrecedence[CurTok];
if (TokPrec <= 0) return -1;
@@ -270,12 +270,12 @@ static ExprAST *ParseExpression();
/// ::= identifier '(' expression* ')'
static ExprAST *ParseIdentifierExpr() {
std::string IdName = IdentifierStr;
-
+
getNextToken(); // eat identifier.
-
+
if (CurTok != '(') // Simple variable ref.
return new VariableExprAST(IdName);
-
+
// Call.
getNextToken(); // eat (
std::vector<ExprAST*> Args;
@@ -295,7 +295,7 @@ static ExprAST *ParseIdentifierExpr() {
// Eat the ')'.
getNextToken();
-
+
return new CallExprAST(IdName, Args);
}
@@ -311,7 +311,7 @@ static ExprAST *ParseParenExpr() {
getNextToken(); // eat (.
ExprAST *V = ParseExpression();
if (!V) return 0;
-
+
if (CurTok != ')')
return Error("expected ')'");
getNextToken(); // eat ).
@@ -321,26 +321,26 @@ static ExprAST *ParseParenExpr() {
/// ifexpr ::= 'if' expression 'then' expression 'else' expression
static ExprAST *ParseIfExpr() {
getNextToken(); // eat the if.
-
+
// condition.
ExprAST *Cond = ParseExpression();
if (!Cond) return 0;
-
+
if (CurTok != tok_then)
return Error("expected then");
getNextToken(); // eat the then
-
+
ExprAST *Then = ParseExpression();
if (Then == 0) return 0;
-
+
if (CurTok != tok_else)
return Error("expected else");
-
+
getNextToken();
-
+
ExprAST *Else = ParseExpression();
if (!Else) return 0;
-
+
return new IfExprAST(Cond, Then, Else);
}
@@ -350,24 +350,24 @@ static ExprAST *ParseForExpr() {
if (CurTok != tok_identifier)
return Error("expected identifier after for");
-
+
std::string IdName = IdentifierStr;
getNextToken(); // eat identifier.
-
+
if (CurTok != '=')
return Error("expected '=' after for");
getNextToken(); // eat '='.
-
-
+
+
ExprAST *Start = ParseExpression();
if (Start == 0) return 0;
if (CurTok != ',')
return Error("expected ',' after for start value");
getNextToken();
-
+
ExprAST *End = ParseExpression();
if (End == 0) return 0;
-
+
// The step value is optional.
ExprAST *Step = 0;
if (CurTok == ',') {
@@ -375,18 +375,18 @@ static ExprAST *ParseForExpr() {
Step = ParseExpression();
if (Step == 0) return 0;
}
-
+
if (CurTok != tok_in)
return Error("expected 'in' after for");
getNextToken(); // eat 'in'.
-
+
ExprAST *Body = ParseExpression();
if (Body == 0) return 0;
return new ForExprAST(IdName, Start, End, Step, Body);
}
-/// varexpr ::= 'var' identifier ('=' expression)?
+/// varexpr ::= 'var' identifier ('=' expression)?
// (',' identifier ('=' expression)?)* 'in' expression
static ExprAST *ParseVarExpr() {
getNextToken(); // eat the var.
@@ -396,7 +396,7 @@ static ExprAST *ParseVarExpr() {
// At least one variable name is required.
if (CurTok != tok_identifier)
return Error("expected identifier after var");
-
+
while (1) {
std::string Name = IdentifierStr;
getNextToken(); // eat identifier.
@@ -405,29 +405,29 @@ static ExprAST *ParseVarExpr() {
ExprAST *Init = 0;
if (CurTok == '=') {
getNextToken(); // eat the '='.
-
+
Init = ParseExpression();
if (Init == 0) return 0;
}
-
+
VarNames.push_back(std::make_pair(Name, Init));
-
+
// End of var list, exit loop.
if (CurTok != ',') break;
getNextToken(); // eat the ','.
-
+
if (CurTok != tok_identifier)
return Error("expected identifier list after var");
}
-
+
// At this point, we have to have 'in'.
if (CurTok != tok_in)
return Error("expected 'in' keyword after 'var'");
getNextToken(); // eat 'in'.
-
+
ExprAST *Body = ParseExpression();
if (Body == 0) return 0;
-
+
return new VarExprAST(VarNames, Body);
}
@@ -457,7 +457,7 @@ static ExprAST *ParseUnary() {
// If the current token is not an operator, it must be a primary expr.
if (!isascii(CurTok) || CurTok == '(' || CurTok == ',')
return ParsePrimary();
-
+
// If this is a unary operator, read it.
int Opc = CurTok;
getNextToken();
@@ -472,20 +472,20 @@ static ExprAST *ParseBinOpRHS(int ExprPrec, ExprAST *LHS) {
// If this is a binop, find its precedence.
while (1) {
int TokPrec = GetTokPrecedence();
-
+
// If this is a binop that binds at least as tightly as the current binop,
// consume it, otherwise we are done.
if (TokPrec < ExprPrec)
return LHS;
-
+
// Okay, we know this is a binop.
int BinOp = CurTok;
getNextToken(); // eat binop
-
+
// Parse the unary expression after the binary operator.
ExprAST *RHS = ParseUnary();
if (!RHS) return 0;
-
+
// If BinOp binds less tightly with RHS than the operator after RHS, let
// the pending operator take RHS as its LHS.
int NextPrec = GetTokPrecedence();
@@ -493,7 +493,7 @@ static ExprAST *ParseBinOpRHS(int ExprPrec, ExprAST *LHS) {
RHS = ParseBinOpRHS(TokPrec+1, RHS);
if (RHS == 0) return 0;
}
-
+
// Merge LHS/RHS.
LHS = new BinaryExprAST(BinOp, LHS, RHS);
}
@@ -505,7 +505,7 @@ static ExprAST *ParseBinOpRHS(int ExprPrec, ExprAST *LHS) {
static ExprAST *ParseExpression() {
ExprAST *LHS = ParseUnary();
if (!LHS) return 0;
-
+
return ParseBinOpRHS(0, LHS);
}
@@ -515,10 +515,10 @@ static ExprAST *ParseExpression() {
/// ::= unary LETTER (id)
static PrototypeAST *ParsePrototype() {
std::string FnName;
-
+
unsigned Kind = 0; // 0 = identifier, 1 = unary, 2 = binary.
unsigned BinaryPrecedence = 30;
-
+
switch (CurTok) {
default:
return ErrorP("Expected function name in prototype");
@@ -544,7 +544,7 @@ static PrototypeAST *ParsePrototype() {
FnName += (char)CurTok;
Kind = 2;
getNextToken();
-
+
// Read the precedence if present.
if (CurTok == tok_number) {
if (NumVal < 1 || NumVal > 100)
@@ -554,23 +554,23 @@ static PrototypeAST *ParsePrototype() {
}
break;
}
-
+
if (CurTok != '(')
return ErrorP("Expected '(' in prototype");
-
+
std::vector<std::string> ArgNames;
while (getNextToken() == tok_identifier)
ArgNames.push_back(IdentifierStr);
if (CurTok != ')')
return ErrorP("Expected ')' in prototype");
-
+
// success.
getNextToken(); // eat ')'.
-
+
// Verify right number of names for operator.
if (Kind && ArgNames.size() != Kind)
return ErrorP("Invalid number of operands for operator");
-
+
return new PrototypeAST(FnName, ArgNames, Kind != 0, BinaryPrecedence);
}
@@ -670,14 +670,14 @@ private:
class HelpingMemoryManager : public SectionMemoryManager
{
- HelpingMemoryManager(const HelpingMemoryManager&) LLVM_DELETED_FUNCTION;
- void operator=(const HelpingMemoryManager&) LLVM_DELETED_FUNCTION;
+ HelpingMemoryManager(const HelpingMemoryManager&) = delete;
+ void operator=(const HelpingMemoryManager&) = delete;
public:
HelpingMemoryManager(MCJITHelper *Helper) : MasterHelper(Helper) {}
virtual ~HelpingMemoryManager() {}
- /// This method returns the address of the specified function.
+ /// This method returns the address of the specified function.
/// Our implementation will attempt to find functions in other
/// modules associated with the MCJITHelper to cross link functions
/// from one generated module to another.
@@ -739,9 +739,9 @@ Function *MCJITHelper::getFunction(const std::string FnName) {
// If we don't have a prototype yet, create one.
if (!PF)
- PF = Function::Create(F->getFunctionType(),
- Function::ExternalLinkage,
- FnName,
+ PF = Function::Create(F->getFunctionType(),
+ Function::ExternalLinkage,
+ FnName,
OpenModule);
return PF;
}
@@ -885,11 +885,11 @@ Value *VariableExprAST::Codegen() {
Value *UnaryExprAST::Codegen() {
Value *OperandV = Operand->Codegen();
if (OperandV == 0) return 0;
-
+
Function *F = TheHelper->getFunction(MakeLegalFunctionName(std::string("unary")+Opcode));
if (F == 0)
return ErrorV("Unknown unary operator");
-
+
return Builder.CreateCall(F, OperandV, "unop");
}
@@ -911,11 +911,11 @@ Value *BinaryExprAST::Codegen() {
Builder.CreateStore(Val, Variable);
return Val;
}
-
+
Value *L = LHS->Codegen();
Value *R = RHS->Codegen();
if (L == 0 || R == 0) return 0;
-
+
switch (Op) {
case '+': return Builder.CreateFAdd(L, R, "addtmp");
case '-': return Builder.CreateFSub(L, R, "subtmp");
@@ -928,12 +928,12 @@ Value *BinaryExprAST::Codegen() {
"booltmp");
default: break;
}
-
+
// If it wasn't a builtin binary operator, it must be a user defined one. Emit
// a call to it.
Function *F = TheHelper->getFunction(MakeLegalFunctionName(std::string("binary")+Op));
assert(F && "binary operator not found!");
-
+
Value *Ops[] = { L, R };
return Builder.CreateCall(F, Ops, "binop");
}
@@ -943,7 +943,7 @@ Value *CallExprAST::Codegen() {
Function *CalleeF = TheHelper->getFunction(Callee);
if (CalleeF == 0)
return ErrorV("Unknown function referenced");
-
+
// If argument mismatch error.
if (CalleeF->arg_size() != Args.size())
return ErrorV("Incorrect # arguments passed");
@@ -953,56 +953,56 @@ Value *CallExprAST::Codegen() {
ArgsV.push_back(Args[i]->Codegen());
if (ArgsV.back() == 0) return 0;
}
-
+
return Builder.CreateCall(CalleeF, ArgsV, "calltmp");
}
Value *IfExprAST::Codegen() {
Value *CondV = Cond->Codegen();
if (CondV == 0) return 0;
-
+
// Convert condition to a bool by comparing equal to 0.0.
- CondV = Builder.CreateFCmpONE(CondV,
+ CondV = Builder.CreateFCmpONE(CondV,
ConstantFP::get(getGlobalContext(), APFloat(0.0)),
"ifcond");
-
+
Function *TheFunction = Builder.GetInsertBlock()->getParent();
-
+
// Create blocks for the then and else cases. Insert the 'then' block at the
// end of the function.
BasicBlock *ThenBB = BasicBlock::Create(getGlobalContext(), "then", TheFunction);
BasicBlock *ElseBB = BasicBlock::Create(getGlobalContext(), "else");
BasicBlock *MergeBB = BasicBlock::Create(getGlobalContext(), "ifcont");
-
+
Builder.CreateCondBr(CondV, ThenBB, ElseBB);
-
+
// Emit then value.
Builder.SetInsertPoint(ThenBB);
-
+
Value *ThenV = Then->Codegen();
if (ThenV == 0) return 0;
-
+
Builder.CreateBr(MergeBB);
// Codegen of 'Then' can change the current block, update ThenBB for the PHI.
ThenBB = Builder.GetInsertBlock();
-
+
// Emit else block.
TheFunction->getBasicBlockList().push_back(ElseBB);
Builder.SetInsertPoint(ElseBB);
-
+
Value *ElseV = Else->Codegen();
if (ElseV == 0) return 0;
-
+
Builder.CreateBr(MergeBB);
// Codegen of 'Else' can change the current block, update ElseBB for the PHI.
ElseBB = Builder.GetInsertBlock();
-
+
// Emit merge block.
TheFunction->getBasicBlockList().push_back(MergeBB);
Builder.SetInsertPoint(MergeBB);
PHINode *PN = Builder.CreatePHI(Type::getDoubleTy(getGlobalContext()), 2,
"iftmp");
-
+
PN->addIncoming(ThenV, ThenBB);
PN->addIncoming(ElseV, ElseBB);
return PN;
@@ -1015,7 +1015,7 @@ Value *ForExprAST::Codegen() {
// start = startexpr
// store start -> var
// goto loop
- // loop:
+ // loop:
// ...
// bodyexpr
// ...
@@ -1028,40 +1028,40 @@ Value *ForExprAST::Codegen() {
// store nextvar -> var
// br endcond, loop, endloop
// outloop:
-
+
Function *TheFunction = Builder.GetInsertBlock()->getParent();
// Create an alloca for the variable in the entry block.
AllocaInst *Alloca = CreateEntryBlockAlloca(TheFunction, VarName);
-
+
// Emit the start code first, without 'variable' in scope.
Value *StartVal = Start->Codegen();
if (StartVal == 0) return 0;
-
+
// Store the value into the alloca.
Builder.CreateStore(StartVal, Alloca);
-
+
// Make the new basic block for the loop header, inserting after current
// block.
BasicBlock *LoopBB = BasicBlock::Create(getGlobalContext(), "loop", TheFunction);
-
+
// Insert an explicit fall through from the current block to the LoopBB.
Builder.CreateBr(LoopBB);
// Start insertion in LoopBB.
Builder.SetInsertPoint(LoopBB);
-
+
// Within the loop, the variable is defined equal to the PHI node. If it
// shadows an existing variable, we have to restore it, so save it now.
AllocaInst *OldVal = NamedValues[VarName];
NamedValues[VarName] = Alloca;
-
+
// Emit the body of the loop. This, like any other expr, can change the
// current BB. Note that we ignore the value computed by the body, but don't
// allow an error.
if (Body->Codegen() == 0)
return 0;
-
+
// Emit the step value.
Value *StepVal;
if (Step) {
@@ -1071,52 +1071,52 @@ Value *ForExprAST::Codegen() {
// If not specified, use 1.0.
StepVal = ConstantFP::get(getGlobalContext(), APFloat(1.0));
}
-
+
// Compute the end condition.
Value *EndCond = End->Codegen();
if (EndCond == 0) return EndCond;
-
+
// Reload, increment, and restore the alloca. This handles the case where
// the body of the loop mutates the variable.
Value *CurVar = Builder.CreateLoad(Alloca, VarName.c_str());
Value *NextVar = Builder.CreateFAdd(CurVar, StepVal, "nextvar");
Builder.CreateStore(NextVar, Alloca);
-
+
// Convert condition to a bool by comparing equal to 0.0.
- EndCond = Builder.CreateFCmpONE(EndCond,
+ EndCond = Builder.CreateFCmpONE(EndCond,
ConstantFP::get(getGlobalContext(), APFloat(0.0)),
"loopcond");
-
+
// Create the "after loop" block and insert it.
BasicBlock *AfterBB = BasicBlock::Create(getGlobalContext(), "afterloop", TheFunction);
-
+
// Insert the conditional branch into the end of LoopEndBB.
Builder.CreateCondBr(EndCond, LoopBB, AfterBB);
-
+
// Any new code will be inserted in AfterBB.
Builder.SetInsertPoint(AfterBB);
-
+
// Restore the unshadowed variable.
if (OldVal)
NamedValues[VarName] = OldVal;
else
NamedValues.erase(VarName);
-
+
// for expr always returns 0.0.
return Constant::getNullValue(Type::getDoubleTy(getGlobalContext()));
}
Value *VarExprAST::Codegen() {
std::vector<AllocaInst *> OldBindings;
-
+
Function *TheFunction = Builder.GetInsertBlock()->getParent();
// Register all variables and emit their initializer.
for (unsigned i = 0, e = VarNames.size(); i != e; ++i) {
const std::string &VarName = VarNames[i].first;
ExprAST *Init = VarNames[i].second;
-
+
// Emit the initializer before adding the variable to scope, this prevents
// the initializer from referencing the variable itself, and permits stuff
// like this:
@@ -1129,22 +1129,22 @@ Value *VarExprAST::Codegen() {
} else { // If not specified, use 0.0.
InitVal = ConstantFP::get(getGlobalContext(), APFloat(0.0));
}
-
+
AllocaInst *Alloca = CreateEntryBlockAlloca(TheFunction, VarName);
Builder.CreateStore(InitVal, Alloca);
// Remember the old variable binding so that we can restore the binding when
// we unrecurse.
OldBindings.push_back(NamedValues[VarName]);
-
+
// Remember this binding.
NamedValues[VarName] = Alloca;
}
-
+
// Codegen the body, now that all vars are in scope.
Value *BodyVal = Body->Codegen();
if (BodyVal == 0) return 0;
-
+
// Pop all our variables from scope.
for (unsigned i = 0, e = VarNames.size(); i != e; ++i)
NamedValues[VarNames[i].first] = OldBindings[i];
@@ -1155,7 +1155,7 @@ Value *VarExprAST::Codegen() {
Function *PrototypeAST::Codegen() {
// Make the function type: double(double,double) etc.
- std::vector<Type*> Doubles(Args.size(),
+ std::vector<Type*> Doubles(Args.size(),
Type::getDoubleTy(getGlobalContext()));
FunctionType *FT = FunctionType::get(Type::getDoubleTy(getGlobalContext()),
Doubles, false);
@@ -1172,26 +1172,26 @@ Function *PrototypeAST::Codegen() {
// Delete the one we just made and get the existing one.
F->eraseFromParent();
F = M->getFunction(Name);
-
+
// If F already has a body, reject this.
if (!F->empty()) {
ErrorF("redefinition of function");
return 0;
}
-
+
// If F took a different number of args, reject.
if (F->arg_size() != Args.size()) {
ErrorF("redefinition of function with different # args");
return 0;
}
}
-
+
// Set names for all arguments.
unsigned Idx = 0;
for (Function::arg_iterator AI = F->arg_begin(); Idx != Args.size();
++AI, ++Idx)
AI->setName(Args[Idx]);
-
+
return F;
}
@@ -1213,19 +1213,19 @@ void PrototypeAST::CreateArgumentAllocas(Function *F) {
Function *FunctionAST::Codegen() {
NamedValues.clear();
-
+
Function *TheFunction = Proto->Codegen();
if (TheFunction == 0)
return 0;
-
+
// If this is an operator, install it.
if (Proto->isBinaryOp())
BinopPrecedence[Proto->getOperatorName()] = Proto->getBinaryPrecedence();
-
+
// Create a new basic block to start insertion into.
BasicBlock *BB = BasicBlock::Create(getGlobalContext(), "entry", TheFunction);
Builder.SetInsertPoint(BB);
-
+
// Add all arguments to the symbol table and create their allocas.
Proto->CreateArgumentAllocas(TheFunction);
@@ -1238,7 +1238,7 @@ Function *FunctionAST::Codegen() {
return TheFunction;
}
-
+
// Error reading body, remove function.
TheFunction->eraseFromParent();
@@ -1285,7 +1285,7 @@ static void HandleTopLevelExpression() {
if (Function *LF = F->Codegen()) {
// JIT the function, returning a function pointer.
void *FPtr = TheHelper->getPointerToFunction(LF);
-
+
// Cast it to the right type (takes no arguments, returns a double) so we
// can call it as a native function.
double (*FP)() = (double (*)())(intptr_t)FPtr;
@@ -1322,20 +1322,20 @@ static void MainLoop() {
//===----------------------------------------------------------------------===//
/// putchard - putchar that takes a double and returns 0.
-extern "C"
+extern "C"
double putchard(double X) {
putchar((char)X);
return 0;
}
/// printd - printf that takes a double prints it as "%f\n", returning 0.
-extern "C"
+extern "C"
double printd(double X) {
printf("%f", X);
return 0;
}
-extern "C"
+extern "C"
double printlf() {
printf("\n");
return 0;
diff --git a/examples/Kaleidoscope/MCJIT/lazy/toy-jit.cpp b/examples/Kaleidoscope/MCJIT/lazy/toy-jit.cpp
index 98c1001..07adbd4 100644
--- a/examples/Kaleidoscope/MCJIT/lazy/toy-jit.cpp
+++ b/examples/Kaleidoscope/MCJIT/lazy/toy-jit.cpp
@@ -6,9 +6,9 @@
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/LegacyPassManager.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Verifier.h"
-#include "llvm/PassManager.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Transforms/Scalar.h"
#include <cctype>
diff --git a/examples/Kaleidoscope/MCJIT/lazy/toy.cpp b/examples/Kaleidoscope/MCJIT/lazy/toy.cpp
index 9c2a0d4..fe7fb61 100644
--- a/examples/Kaleidoscope/MCJIT/lazy/toy.cpp
+++ b/examples/Kaleidoscope/MCJIT/lazy/toy.cpp
@@ -8,9 +8,9 @@
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/LegacyPassManager.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Verifier.h"
-#include "llvm/PassManager.h"
#include "llvm/Support/TargetSelect.h"
#include "llvm/Transforms/Scalar.h"
#include <cctype>
@@ -34,14 +34,14 @@ enum Token {
// primary
tok_identifier = -4, tok_number = -5,
-
+
// control
tok_if = -6, tok_then = -7, tok_else = -8,
tok_for = -9, tok_in = -10,
-
+
// operators
tok_binary = -11, tok_unary = -12,
-
+
// var definition
tok_var = -13
};
@@ -90,11 +90,11 @@ static int gettok() {
// Comment until end of line.
do LastChar = getchar();
while (LastChar != EOF && LastChar != '\n' && LastChar != '\r');
-
+
if (LastChar != EOF)
return gettok();
}
-
+
// Check for end of file. Don't eat the EOF.
if (LastChar == EOF)
return tok_eof;
@@ -138,7 +138,7 @@ class UnaryExprAST : public ExprAST {
char Opcode;
ExprAST *Operand;
public:
- UnaryExprAST(char opcode, ExprAST *operand)
+ UnaryExprAST(char opcode, ExprAST *operand)
: Opcode(opcode), Operand(operand) {}
virtual Value *Codegen();
};
@@ -148,7 +148,7 @@ class BinaryExprAST : public ExprAST {
char Op;
ExprAST *LHS, *RHS;
public:
- BinaryExprAST(char op, ExprAST *lhs, ExprAST *rhs)
+ BinaryExprAST(char op, ExprAST *lhs, ExprAST *rhs)
: Op(op), LHS(lhs), RHS(rhs) {}
virtual Value *Codegen();
};
@@ -191,7 +191,7 @@ public:
VarExprAST(const std::vector<std::pair<std::string, ExprAST*> > &varnames,
ExprAST *body)
: VarNames(varnames), Body(body) {}
-
+
virtual Value *Codegen();
};
@@ -206,19 +206,19 @@ public:
PrototypeAST(const std::string &name, const std::vector<std::string> &args,
bool isoperator = false, unsigned prec = 0)
: Name(name), Args(args), isOperator(isoperator), Precedence(prec) {}
-
+
bool isUnaryOp() const { return isOperator && Args.size() == 1; }
bool isBinaryOp() const { return isOperator && Args.size() == 2; }
-
+
char getOperatorName() const {
assert(isUnaryOp() || isBinaryOp());
return Name[Name.size()-1];
}
-
+
unsigned getBinaryPrecedence() const { return Precedence; }
-
+
Function *Codegen();
-
+
void CreateArgumentAllocas(Function *F);
};
@@ -229,7 +229,7 @@ class FunctionAST {
public:
FunctionAST(PrototypeAST *proto, ExprAST *body)
: Proto(proto), Body(body) {}
-
+
Function *Codegen();
};
@@ -253,7 +253,7 @@ static std::map<char, int> BinopPrecedence;
static int GetTokPrecedence() {
if (!isascii(CurTok))
return -1;
-
+
// Make sure it's a declared binop.
int TokPrec = BinopPrecedence[CurTok];
if (TokPrec <= 0) return -1;
@@ -272,12 +272,12 @@ static ExprAST *ParseExpression();
/// ::= identifier '(' expression* ')'
static ExprAST *ParseIdentifierExpr() {
std::string IdName = IdentifierStr;
-
+
getNextToken(); // eat identifier.
-
+
if (CurTok != '(') // Simple variable ref.
return new VariableExprAST(IdName);
-
+
// Call.
getNextToken(); // eat (
std::vector<ExprAST*> Args;
@@ -297,7 +297,7 @@ static ExprAST *ParseIdentifierExpr() {
// Eat the ')'.
getNextToken();
-
+
return new CallExprAST(IdName, Args);
}
@@ -313,7 +313,7 @@ static ExprAST *ParseParenExpr() {
getNextToken(); // eat (.
ExprAST *V = ParseExpression();
if (!V) return 0;
-
+
if (CurTok != ')')
return Error("expected ')'");
getNextToken(); // eat ).
@@ -323,26 +323,26 @@ static ExprAST *ParseParenExpr() {
/// ifexpr ::= 'if' expression 'then' expression 'else' expression
static ExprAST *ParseIfExpr() {
getNextToken(); // eat the if.
-
+
// condition.
ExprAST *Cond = ParseExpression();
if (!Cond) return 0;
-
+
if (CurTok != tok_then)
return Error("expected then");
getNextToken(); // eat the then
-
+
ExprAST *Then = ParseExpression();
if (Then == 0) return 0;
-
+
if (CurTok != tok_else)
return Error("expected else");
-
+
getNextToken();
-
+
ExprAST *Else = ParseExpression();
if (!Else) return 0;
-
+
return new IfExprAST(Cond, Then, Else);
}
@@ -352,24 +352,24 @@ static ExprAST *ParseForExpr() {
if (CurTok != tok_identifier)
return Error("expected identifier after for");
-
+
std::string IdName = IdentifierStr;
getNextToken(); // eat identifier.
-
+
if (CurTok != '=')
return Error("expected '=' after for");
getNextToken(); // eat '='.
-
-
+
+
ExprAST *Start = ParseExpression();
if (Start == 0) return 0;
if (CurTok != ',')
return Error("expected ',' after for start value");
getNextToken();
-
+
ExprAST *End = ParseExpression();
if (End == 0) return 0;
-
+
// The step value is optional.
ExprAST *Step = 0;
if (CurTok == ',') {
@@ -377,18 +377,18 @@ static ExprAST *ParseForExpr() {
Step = ParseExpression();
if (Step == 0) return 0;
}
-
+
if (CurTok != tok_in)
return Error("expected 'in' after for");
getNextToken(); // eat 'in'.
-
+
ExprAST *Body = ParseExpression();
if (Body == 0) return 0;
return new ForExprAST(IdName, Start, End, Step, Body);
}
-/// varexpr ::= 'var' identifier ('=' expression)?
+/// varexpr ::= 'var' identifier ('=' expression)?
// (',' identifier ('=' expression)?)* 'in' expression
static ExprAST *ParseVarExpr() {
getNextToken(); // eat the var.
@@ -398,7 +398,7 @@ static ExprAST *ParseVarExpr() {
// At least one variable name is required.
if (CurTok != tok_identifier)
return Error("expected identifier after var");
-
+
while (1) {
std::string Name = IdentifierStr;
getNextToken(); // eat identifier.
@@ -407,29 +407,29 @@ static ExprAST *ParseVarExpr() {
ExprAST *Init = 0;
if (CurTok == '=') {
getNextToken(); // eat the '='.
-
+
Init = ParseExpression();
if (Init == 0) return 0;
}
-
+
VarNames.push_back(std::make_pair(Name, Init));
-
+
// End of var list, exit loop.
if (CurTok != ',') break;
getNextToken(); // eat the ','.
-
+
if (CurTok != tok_identifier)
return Error("expected identifier list after var");
}
-
+
// At this point, we have to have 'in'.
if (CurTok != tok_in)
return Error("expected 'in' keyword after 'var'");
getNextToken(); // eat 'in'.
-
+
ExprAST *Body = ParseExpression();
if (Body == 0) return 0;
-
+
return new VarExprAST(VarNames, Body);
}
@@ -459,7 +459,7 @@ static ExprAST *ParseUnary() {
// If the current token is not an operator, it must be a primary expr.
if (!isascii(CurTok) || CurTok == '(' || CurTok == ',')
return ParsePrimary();
-
+
// If this is a unary operator, read it.
int Opc = CurTok;
getNextToken();
@@ -474,20 +474,20 @@ static ExprAST *ParseBinOpRHS(int ExprPrec, ExprAST *LHS) {
// If this is a binop, find its precedence.
while (1) {
int TokPrec = GetTokPrecedence();
-
+
// If this is a binop that binds at least as tightly as the current binop,
// consume it, otherwise we are done.
if (TokPrec < ExprPrec)
return LHS;
-
+
// Okay, we know this is a binop.
int BinOp = CurTok;
getNextToken(); // eat binop
-
+
// Parse the unary expression after the binary operator.
ExprAST *RHS = ParseUnary();
if (!RHS) return 0;
-
+
// If BinOp binds less tightly with RHS than the operator after RHS, let
// the pending operator take RHS as its LHS.
int NextPrec = GetTokPrecedence();
@@ -495,7 +495,7 @@ static ExprAST *ParseBinOpRHS(int ExprPrec, ExprAST *LHS) {
RHS = ParseBinOpRHS(TokPrec+1, RHS);
if (RHS == 0) return 0;
}
-
+
// Merge LHS/RHS.
LHS = new BinaryExprAST(BinOp, LHS, RHS);
}
@@ -507,7 +507,7 @@ static ExprAST *ParseBinOpRHS(int ExprPrec, ExprAST *LHS) {
static ExprAST *ParseExpression() {
ExprAST *LHS = ParseUnary();
if (!LHS) return 0;
-
+
return ParseBinOpRHS(0, LHS);
}
@@ -517,10 +517,10 @@ static ExprAST *ParseExpression() {
/// ::= unary LETTER (id)
static PrototypeAST *ParsePrototype() {
std::string FnName;
-
+
unsigned Kind = 0; // 0 = identifier, 1 = unary, 2 = binary.
unsigned BinaryPrecedence = 30;
-
+
switch (CurTok) {
default:
return ErrorP("Expected function name in prototype");
@@ -546,7 +546,7 @@ static PrototypeAST *ParsePrototype() {
FnName += (char)CurTok;
Kind = 2;
getNextToken();
-
+
// Read the precedence if present.
if (CurTok == tok_number) {
if (NumVal < 1 || NumVal > 100)
@@ -556,23 +556,23 @@ static PrototypeAST *ParsePrototype() {
}
break;
}
-
+
if (CurTok != '(')
return ErrorP("Expected '(' in prototype");
-
+
std::vector<std::string> ArgNames;
while (getNextToken() == tok_identifier)
ArgNames.push_back(IdentifierStr);
if (CurTok != ')')
return ErrorP("Expected ')' in prototype");
-
+
// success.
getNextToken(); // eat ')'.
-
+
// Verify right number of names for operator.
if (Kind && ArgNames.size() != Kind)
return ErrorP("Invalid number of operands for operator");
-
+
return new PrototypeAST(FnName, ArgNames, Kind != 0, BinaryPrecedence);
}
@@ -673,14 +673,14 @@ private:
class HelpingMemoryManager : public SectionMemoryManager
{
- HelpingMemoryManager(const HelpingMemoryManager&) LLVM_DELETED_FUNCTION;
- void operator=(const HelpingMemoryManager&) LLVM_DELETED_FUNCTION;
+ HelpingMemoryManager(const HelpingMemoryManager&) = delete;
+ void operator=(const HelpingMemoryManager&) = delete;
public:
HelpingMemoryManager(MCJITHelper *Helper) : MasterHelper(Helper) {}
virtual ~HelpingMemoryManager() {}
- /// This method returns the address of the specified function.
+ /// This method returns the address of the specified function.
/// Our implementation will attempt to find functions in other
/// modules associated with the MCJITHelper to cross link functions
/// from one generated module to another.
@@ -749,9 +749,9 @@ Function *MCJITHelper::getFunction(const std::string FnName) {
// If we don't have a prototype yet, create one.
if (!PF)
- PF = Function::Create(F->getFunctionType(),
- Function::ExternalLinkage,
- FnName,
+ PF = Function::Create(F->getFunctionType(),
+ Function::ExternalLinkage,
+ FnName,
OpenModule);
return PF;
}
@@ -925,11 +925,11 @@ Value *VariableExprAST::Codegen() {
Value *UnaryExprAST::Codegen() {
Value *OperandV = Operand->Codegen();
if (OperandV == 0) return 0;
-
+
Function *F = TheHelper->getFunction(MakeLegalFunctionName(std::string("unary")+Opcode));
if (F == 0)
return ErrorV("Unknown unary operator");
-
+
return Builder.CreateCall(F, OperandV, "unop");
}
@@ -951,11 +951,11 @@ Value *BinaryExprAST::Codegen() {
Builder.CreateStore(Val, Variable);
return Val;
}
-
+
Value *L = LHS->Codegen();
Value *R = RHS->Codegen();
if (L == 0 || R == 0) return 0;
-
+
switch (Op) {
case '+': return Builder.CreateFAdd(L, R, "addtmp");
case '-': return Builder.CreateFSub(L, R, "subtmp");
@@ -968,12 +968,12 @@ Value *BinaryExprAST::Codegen() {
"booltmp");
default: break;
}
-
+
// If it wasn't a builtin binary operator, it must be a user defined one. Emit
// a call to it.
Function *F = TheHelper->getFunction(MakeLegalFunctionName(std::string("binary")+Op));
assert(F && "binary operator not found!");
-
+
Value *Ops[] = { L, R };
return Builder.CreateCall(F, Ops, "binop");
}
@@ -983,7 +983,7 @@ Value *CallExprAST::Codegen() {
Function *CalleeF = TheHelper->getFunction(Callee);
if (CalleeF == 0)
return ErrorV("Unknown function referenced");
-
+
// If argument mismatch error.
if (CalleeF->arg_size() != Args.size())
return ErrorV("Incorrect # arguments passed");
@@ -993,56 +993,56 @@ Value *CallExprAST::Codegen() {
ArgsV.push_back(Args[i]->Codegen());
if (ArgsV.back() == 0) return 0;
}
-
+
return Builder.CreateCall(CalleeF, ArgsV, "calltmp");
}
Value *IfExprAST::Codegen() {
Value *CondV = Cond->Codegen();
if (CondV == 0) return 0;
-
+
// Convert condition to a bool by comparing equal to 0.0.
- CondV = Builder.CreateFCmpONE(CondV,
+ CondV = Builder.CreateFCmpONE(CondV,
ConstantFP::get(getGlobalContext(), APFloat(0.0)),
"ifcond");
-
+
Function *TheFunction = Builder.GetInsertBlock()->getParent();
-
+
// Create blocks for the then and else cases. Insert the 'then' block at the
// end of the function.
BasicBlock *ThenBB = BasicBlock::Create(getGlobalContext(), "then", TheFunction);
BasicBlock *ElseBB = BasicBlock::Create(getGlobalContext(), "else");
BasicBlock *MergeBB = BasicBlock::Create(getGlobalContext(), "ifcont");
-
+
Builder.CreateCondBr(CondV, ThenBB, ElseBB);
-
+
// Emit then value.
Builder.SetInsertPoint(ThenBB);
-
+
Value *ThenV = Then->Codegen();
if (ThenV == 0) return 0;
-
+
Builder.CreateBr(MergeBB);
// Codegen of 'Then' can change the current block, update ThenBB for the PHI.
ThenBB = Builder.GetInsertBlock();
-
+
// Emit else block.
TheFunction->getBasicBlockList().push_back(ElseBB);
Builder.SetInsertPoint(ElseBB);
-
+
Value *ElseV = Else->Codegen();
if (ElseV == 0) return 0;
-
+
Builder.CreateBr(MergeBB);
// Codegen of 'Else' can change the current block, update ElseBB for the PHI.
ElseBB = Builder.GetInsertBlock();
-
+
// Emit merge block.
TheFunction->getBasicBlockList().push_back(MergeBB);
Builder.SetInsertPoint(MergeBB);
PHINode *PN = Builder.CreatePHI(Type::getDoubleTy(getGlobalContext()), 2,
"iftmp");
-
+
PN->addIncoming(ThenV, ThenBB);
PN->addIncoming(ElseV, ElseBB);
return PN;
@@ -1055,7 +1055,7 @@ Value *ForExprAST::Codegen() {
// start = startexpr
// store start -> var
// goto loop
- // loop:
+ // loop:
// ...
// bodyexpr
// ...
@@ -1068,40 +1068,40 @@ Value *ForExprAST::Codegen() {
// store nextvar -> var
// br endcond, loop, endloop
// outloop:
-
+
Function *TheFunction = Builder.GetInsertBlock()->getParent();
// Create an alloca for the variable in the entry block.
AllocaInst *Alloca = CreateEntryBlockAlloca(TheFunction, VarName);
-
+
// Emit the start code first, without 'variable' in scope.
Value *StartVal = Start->Codegen();
if (StartVal == 0) return 0;
-
+
// Store the value into the alloca.
Builder.CreateStore(StartVal, Alloca);
-
+
// Make the new basic block for the loop header, inserting after current
// block.
BasicBlock *LoopBB = BasicBlock::Create(getGlobalContext(), "loop", TheFunction);
-
+
// Insert an explicit fall through from the current block to the LoopBB.
Builder.CreateBr(LoopBB);
// Start insertion in LoopBB.
Builder.SetInsertPoint(LoopBB);
-
+
// Within the loop, the variable is defined equal to the PHI node. If it
// shadows an existing variable, we have to restore it, so save it now.
AllocaInst *OldVal = NamedValues[VarName];
NamedValues[VarName] = Alloca;
-
+
// Emit the body of the loop. This, like any other expr, can change the
// current BB. Note that we ignore the value computed by the body, but don't
// allow an error.
if (Body->Codegen() == 0)
return 0;
-
+
// Emit the step value.
Value *StepVal;
if (Step) {
@@ -1111,52 +1111,52 @@ Value *ForExprAST::Codegen() {
// If not specified, use 1.0.
StepVal = ConstantFP::get(getGlobalContext(), APFloat(1.0));
}
-
+
// Compute the end condition.
Value *EndCond = End->Codegen();
if (EndCond == 0) return EndCond;
-
+
// Reload, increment, and restore the alloca. This handles the case where
// the body of the loop mutates the variable.
Value *CurVar = Builder.CreateLoad(Alloca, VarName.c_str());
Value *NextVar = Builder.CreateFAdd(CurVar, StepVal, "nextvar");
Builder.CreateStore(NextVar, Alloca);
-
+
// Convert condition to a bool by comparing equal to 0.0.
- EndCond = Builder.CreateFCmpONE(EndCond,
+ EndCond = Builder.CreateFCmpONE(EndCond,
ConstantFP::get(getGlobalContext(), APFloat(0.0)),
"loopcond");
-
+
// Create the "after loop" block and insert it.
BasicBlock *AfterBB = BasicBlock::Create(getGlobalContext(), "afterloop", TheFunction);
-
+
// Insert the conditional branch into the end of LoopEndBB.
Builder.CreateCondBr(EndCond, LoopBB, AfterBB);
-
+
// Any new code will be inserted in AfterBB.
Builder.SetInsertPoint(AfterBB);
-
+
// Restore the unshadowed variable.
if (OldVal)
NamedValues[VarName] = OldVal;
else
NamedValues.erase(VarName);
-
+
// for expr always returns 0.0.
return Constant::getNullValue(Type::getDoubleTy(getGlobalContext()));
}
Value *VarExprAST::Codegen() {
std::vector<AllocaInst *> OldBindings;
-
+
Function *TheFunction = Builder.GetInsertBlock()->getParent();
// Register all variables and emit their initializer.
for (unsigned i = 0, e = VarNames.size(); i != e; ++i) {
const std::string &VarName = VarNames[i].first;
ExprAST *Init = VarNames[i].second;
-
+
// Emit the initializer before adding the variable to scope, this prevents
// the initializer from referencing the variable itself, and permits stuff
// like this:
@@ -1169,22 +1169,22 @@ Value *VarExprAST::Codegen() {
} else { // If not specified, use 0.0.
InitVal = ConstantFP::get(getGlobalContext(), APFloat(0.0));
}
-
+
AllocaInst *Alloca = CreateEntryBlockAlloca(TheFunction, VarName);
Builder.CreateStore(InitVal, Alloca);
// Remember the old variable binding so that we can restore the binding when
// we unrecurse.
OldBindings.push_back(NamedValues[VarName]);
-
+
// Remember this binding.
NamedValues[VarName] = Alloca;
}
-
+
// Codegen the body, now that all vars are in scope.
Value *BodyVal = Body->Codegen();
if (BodyVal == 0) return 0;
-
+
// Pop all our variables from scope.
for (unsigned i = 0, e = VarNames.size(); i != e; ++i)
NamedValues[VarNames[i].first] = OldBindings[i];
@@ -1195,7 +1195,7 @@ Value *VarExprAST::Codegen() {
Function *PrototypeAST::Codegen() {
// Make the function type: double(double,double) etc.
- std::vector<Type*> Doubles(Args.size(),
+ std::vector<Type*> Doubles(Args.size(),
Type::getDoubleTy(getGlobalContext()));
FunctionType *FT = FunctionType::get(Type::getDoubleTy(getGlobalContext()),
Doubles, false);
@@ -1212,26 +1212,26 @@ Function *PrototypeAST::Codegen() {
// Delete the one we just made and get the existing one.
F->eraseFromParent();
F = M->getFunction(Name);
-
+
// If F already has a body, reject this.
if (!F->empty()) {
ErrorF("redefinition of function");
return 0;
}
-
+
// If F took a different number of args, reject.
if (F->arg_size() != Args.size()) {
ErrorF("redefinition of function with different # args");
return 0;
}
}
-
+
// Set names for all arguments.
unsigned Idx = 0;
for (Function::arg_iterator AI = F->arg_begin(); Idx != Args.size();
++AI, ++Idx)
AI->setName(Args[Idx]);
-
+
return F;
}
@@ -1253,19 +1253,19 @@ void PrototypeAST::CreateArgumentAllocas(Function *F) {
Function *FunctionAST::Codegen() {
NamedValues.clear();
-
+
Function *TheFunction = Proto->Codegen();
if (TheFunction == 0)
return 0;
-
+
// If this is an operator, install it.
if (Proto->isBinaryOp())
BinopPrecedence[Proto->getOperatorName()] = Proto->getBinaryPrecedence();
-
+
// Create a new basic block to start insertion into.
BasicBlock *BB = BasicBlock::Create(getGlobalContext(), "entry", TheFunction);
Builder.SetInsertPoint(BB);
-
+
// Add all arguments to the symbol table and create their allocas.
Proto->CreateArgumentAllocas(TheFunction);
@@ -1326,7 +1326,7 @@ static void HandleTopLevelExpression() {
if (Function *LF = F->Codegen()) {
// JIT the function, returning a function pointer.
void *FPtr = TheHelper->getPointerToFunction(LF);
-
+
// Cast it to the right type (takes no arguments, returns a double) so we
// can call it as a native function.
double (*FP)() = (double (*)())(intptr_t)FPtr;
@@ -1363,20 +1363,20 @@ static void MainLoop() {
//===----------------------------------------------------------------------===//
/// putchard - putchar that takes a double and returns 0.
-extern "C"
+extern "C"
double putchard(double X) {
putchar((char)X);
return 0;
}
/// printd - printf that takes a double prints it as "%f\n", returning 0.
-extern "C"
+extern "C"
double printd(double X) {
printf("%f", X);
return 0;
}
-extern "C"
+extern "C"
double printlf() {
printf("\n");
return 0;
diff --git a/examples/Kaleidoscope/Makefile b/examples/Kaleidoscope/Makefile
index bd0c252..8c3b1e3 100644
--- a/examples/Kaleidoscope/Makefile
+++ b/examples/Kaleidoscope/Makefile
@@ -10,6 +10,6 @@ LEVEL=../..
include $(LEVEL)/Makefile.config
-PARALLEL_DIRS:= Chapter2 Chapter3 Chapter4 Chapter5 Chapter6 Chapter7
+PARALLEL_DIRS:= Chapter2 Chapter3 Chapter4 Chapter5 Chapter6 Chapter7 Chapter8
include $(LEVEL)/Makefile.common
diff --git a/examples/Kaleidoscope/Orc/CMakeLists.txt b/examples/Kaleidoscope/Orc/CMakeLists.txt
new file mode 100644
index 0000000..5aa0454
--- /dev/null
+++ b/examples/Kaleidoscope/Orc/CMakeLists.txt
@@ -0,0 +1,4 @@
+add_subdirectory(initial)
+add_subdirectory(lazy_codegen)
+add_subdirectory(lazy_irgen)
+add_subdirectory(fully_lazy)
diff --git a/examples/Kaleidoscope/Orc/fully_lazy/CMakeLists.txt b/examples/Kaleidoscope/Orc/fully_lazy/CMakeLists.txt
new file mode 100644
index 0000000..abb0428
--- /dev/null
+++ b/examples/Kaleidoscope/Orc/fully_lazy/CMakeLists.txt
@@ -0,0 +1,13 @@
+set(LLVM_LINK_COMPONENTS
+ Core
+ ExecutionEngine
+ Object
+ OrcJIT
+ RuntimeDyld
+ Support
+ native
+ )
+
+add_kaleidoscope_chapter(Kaleidoscope-Orc-fully_lazy
+ toy.cpp
+ )
diff --git a/examples/Kaleidoscope/Orc/fully_lazy/Makefile b/examples/Kaleidoscope/Orc/fully_lazy/Makefile
new file mode 100644
index 0000000..5536314
--- /dev/null
+++ b/examples/Kaleidoscope/Orc/fully_lazy/Makefile
@@ -0,0 +1,17 @@
+UNAME := $(shell uname -s)
+
+ifeq ($(UNAME),Darwin)
+ CXX := xcrun --sdk macosx clang++
+else
+ CXX := clang++
+endif
+
+LLVM_CXXFLAGS := $(shell llvm-config --cxxflags)
+LLVM_LDFLAGS := $(shell llvm-config --ldflags --system-libs --libs core orcjit native)
+
+toy: toy.cpp
+ $(CXX) $(LLVM_CXXFLAGS) -Wall -std=c++11 -g -O0 -rdynamic -fno-rtti -o toy toy.cpp $(LLVM_LDFLAGS)
+
+.PHONY: clean
+clean:
+ rm -f toy
diff --git a/examples/Kaleidoscope/Orc/fully_lazy/README.txt b/examples/Kaleidoscope/Orc/fully_lazy/README.txt
new file mode 100644
index 0000000..c018931
--- /dev/null
+++ b/examples/Kaleidoscope/Orc/fully_lazy/README.txt
@@ -0,0 +1,21 @@
+//===----------------------------------------------------------------------===/
+// Kaleidoscope with Orc - Lazy IRGen Version
+//===----------------------------------------------------------------------===//
+
+This version of Kaleidoscope with Orc demonstrates fully lazy IR-generation.
+Building on the lazy-irgen version of the tutorial, this version injects JIT
+callbacks to defer the bulk of IR-generation and code-generation of functions until
+they are first called.
+
+When a function definition is entered, a JIT callback is created and a stub
+function is built that will call the body of the function indirectly. The body of
+the function is *not* IRGen'd at this point. Instead, the function pointer for
+the indirect call is initialized to point at the JIT callback, and the compile
+action for the callback is initialized with a lambda that IRGens the body of the
+function and adds it to the JIT. The function pointer is updated by the JIT
+callback's update action to point at the newly emitted function body, so future
+calls to the stub will go straight to the body, not through the JIT.
+
+This directory contains a Makefile that allows the code to be built in a
+standalone manner, independent of the larger LLVM build infrastructure. To build
+the program you will need to have 'clang++' and 'llvm-config' in your path.
diff --git a/examples/Kaleidoscope/Orc/fully_lazy/toy.cpp b/examples/Kaleidoscope/Orc/fully_lazy/toy.cpp
new file mode 100644
index 0000000..2e65756
--- /dev/null
+++ b/examples/Kaleidoscope/Orc/fully_lazy/toy.cpp
@@ -0,0 +1,1437 @@
+#include "llvm/Analysis/Passes.h"
+#include "llvm/ExecutionEngine/Orc/CompileUtils.h"
+#include "llvm/ExecutionEngine/Orc/IRCompileLayer.h"
+#include "llvm/ExecutionEngine/Orc/LazyEmittingLayer.h"
+#include "llvm/ExecutionEngine/Orc/ObjectLinkingLayer.h"
+#include "llvm/ExecutionEngine/Orc/OrcTargetSupport.h"
+#include "llvm/IR/DataLayout.h"
+#include "llvm/IR/DerivedTypes.h"
+#include "llvm/IR/IRBuilder.h"
+#include "llvm/IR/LegacyPassManager.h"
+#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/Module.h"
+#include "llvm/IR/Verifier.h"
+#include "llvm/Support/TargetSelect.h"
+#include "llvm/Transforms/Scalar.h"
+#include <cctype>
+#include <iomanip>
+#include <iostream>
+#include <map>
+#include <sstream>
+#include <string>
+#include <vector>
+
+using namespace llvm;
+using namespace llvm::orc;
+
+//===----------------------------------------------------------------------===//
+// Lexer
+//===----------------------------------------------------------------------===//
+
+// The lexer returns tokens [0-255] if it is an unknown character, otherwise one
+// of these for known things.
+enum Token {
+ tok_eof = -1,
+
+ // commands
+ tok_def = -2, tok_extern = -3,
+
+ // primary
+ tok_identifier = -4, tok_number = -5,
+
+ // control
+ tok_if = -6, tok_then = -7, tok_else = -8,
+ tok_for = -9, tok_in = -10,
+
+ // operators
+ tok_binary = -11, tok_unary = -12,
+
+ // var definition
+ tok_var = -13
+};
+
+static std::string IdentifierStr; // Filled in if tok_identifier
+static double NumVal; // Filled in if tok_number
+
+/// gettok - Return the next token from standard input.
+static int gettok() {
+ static int LastChar = ' ';
+
+ // Skip any whitespace.
+ while (isspace(LastChar))
+ LastChar = getchar();
+
+ if (isalpha(LastChar)) { // identifier: [a-zA-Z][a-zA-Z0-9]*
+ IdentifierStr = LastChar;
+ while (isalnum((LastChar = getchar())))
+ IdentifierStr += LastChar;
+
+ if (IdentifierStr == "def") return tok_def;
+ if (IdentifierStr == "extern") return tok_extern;
+ if (IdentifierStr == "if") return tok_if;
+ if (IdentifierStr == "then") return tok_then;
+ if (IdentifierStr == "else") return tok_else;
+ if (IdentifierStr == "for") return tok_for;
+ if (IdentifierStr == "in") return tok_in;
+ if (IdentifierStr == "binary") return tok_binary;
+ if (IdentifierStr == "unary") return tok_unary;
+ if (IdentifierStr == "var") return tok_var;
+ return tok_identifier;
+ }
+
+ if (isdigit(LastChar) || LastChar == '.') { // Number: [0-9.]+
+ std::string NumStr;
+ do {
+ NumStr += LastChar;
+ LastChar = getchar();
+ } while (isdigit(LastChar) || LastChar == '.');
+
+ NumVal = strtod(NumStr.c_str(), 0);
+ return tok_number;
+ }
+
+ if (LastChar == '#') {
+ // Comment until end of line.
+ do LastChar = getchar();
+ while (LastChar != EOF && LastChar != '\n' && LastChar != '\r');
+
+ if (LastChar != EOF)
+ return gettok();
+ }
+
+ // Check for end of file. Don't eat the EOF.
+ if (LastChar == EOF)
+ return tok_eof;
+
+ // Otherwise, just return the character as its ascii value.
+ int ThisChar = LastChar;
+ LastChar = getchar();
+ return ThisChar;
+}
+
+//===----------------------------------------------------------------------===//
+// Abstract Syntax Tree (aka Parse Tree)
+//===----------------------------------------------------------------------===//
+
+class IRGenContext;
+
+/// ExprAST - Base class for all expression nodes.
+struct ExprAST {
+ virtual ~ExprAST() {}
+ virtual Value *IRGen(IRGenContext &C) const = 0;
+};
+
+/// NumberExprAST - Expression class for numeric literals like "1.0".
+struct NumberExprAST : public ExprAST {
+ NumberExprAST(double Val) : Val(Val) {}
+ Value *IRGen(IRGenContext &C) const override;
+
+ double Val;
+};
+
+/// VariableExprAST - Expression class for referencing a variable, like "a".
+struct VariableExprAST : public ExprAST {
+ VariableExprAST(std::string Name) : Name(std::move(Name)) {}
+ Value *IRGen(IRGenContext &C) const override;
+
+ std::string Name;
+};
+
+/// UnaryExprAST - Expression class for a unary operator.
+struct UnaryExprAST : public ExprAST {
+ UnaryExprAST(char Opcode, std::unique_ptr<ExprAST> Operand)
+ : Opcode(std::move(Opcode)), Operand(std::move(Operand)) {}
+
+ Value *IRGen(IRGenContext &C) const override;
+
+ char Opcode;
+ std::unique_ptr<ExprAST> Operand;
+};
+
+/// BinaryExprAST - Expression class for a binary operator.
+struct BinaryExprAST : public ExprAST {
+ BinaryExprAST(char Op, std::unique_ptr<ExprAST> LHS,
+ std::unique_ptr<ExprAST> RHS)
+ : Op(Op), LHS(std::move(LHS)), RHS(std::move(RHS)) {}
+
+ Value *IRGen(IRGenContext &C) const override;
+
+ char Op;
+ std::unique_ptr<ExprAST> LHS, RHS;
+};
+
+/// CallExprAST - Expression class for function calls.
+struct CallExprAST : public ExprAST {
+ CallExprAST(std::string CalleeName,
+ std::vector<std::unique_ptr<ExprAST>> Args)
+ : CalleeName(std::move(CalleeName)), Args(std::move(Args)) {}
+
+ Value *IRGen(IRGenContext &C) const override;
+
+ std::string CalleeName;
+ std::vector<std::unique_ptr<ExprAST>> Args;
+};
+
+/// IfExprAST - Expression class for if/then/else.
+struct IfExprAST : public ExprAST {
+ IfExprAST(std::unique_ptr<ExprAST> Cond, std::unique_ptr<ExprAST> Then,
+ std::unique_ptr<ExprAST> Else)
+ : Cond(std::move(Cond)), Then(std::move(Then)), Else(std::move(Else)) {}
+ Value *IRGen(IRGenContext &C) const override;
+
+ std::unique_ptr<ExprAST> Cond, Then, Else;
+};
+
+/// ForExprAST - Expression class for for/in.
+struct ForExprAST : public ExprAST {
+ ForExprAST(std::string VarName, std::unique_ptr<ExprAST> Start,
+ std::unique_ptr<ExprAST> End, std::unique_ptr<ExprAST> Step,
+ std::unique_ptr<ExprAST> Body)
+ : VarName(std::move(VarName)), Start(std::move(Start)), End(std::move(End)),
+ Step(std::move(Step)), Body(std::move(Body)) {}
+
+ Value *IRGen(IRGenContext &C) const override;
+
+ std::string VarName;
+ std::unique_ptr<ExprAST> Start, End, Step, Body;
+};
+
+/// VarExprAST - Expression class for var/in
+struct VarExprAST : public ExprAST {
+ typedef std::pair<std::string, std::unique_ptr<ExprAST>> Binding;
+ typedef std::vector<Binding> BindingList;
+
+ VarExprAST(BindingList VarBindings, std::unique_ptr<ExprAST> Body)
+ : VarBindings(std::move(VarBindings)), Body(std::move(Body)) {}
+
+ Value *IRGen(IRGenContext &C) const override;
+
+ BindingList VarBindings;
+ std::unique_ptr<ExprAST> Body;
+};
+
+/// PrototypeAST - This class represents the "prototype" for a function,
+/// which captures its argument names as well as if it is an operator.
+struct PrototypeAST {
+ PrototypeAST(std::string Name, std::vector<std::string> Args,
+ bool IsOperator = false, unsigned Precedence = 0)
+ : Name(std::move(Name)), Args(std::move(Args)), IsOperator(IsOperator),
+ Precedence(Precedence) {}
+
+ Function *IRGen(IRGenContext &C) const;
+ void CreateArgumentAllocas(Function *F, IRGenContext &C);
+
+ bool isUnaryOp() const { return IsOperator && Args.size() == 1; }
+ bool isBinaryOp() const { return IsOperator && Args.size() == 2; }
+
+ char getOperatorName() const {
+ assert(isUnaryOp() || isBinaryOp());
+ return Name[Name.size()-1];
+ }
+
+ std::string Name;
+ std::vector<std::string> Args;
+ bool IsOperator;
+ unsigned Precedence; // Precedence if a binary op.
+};
+
+/// FunctionAST - This class represents a function definition itself.
+struct FunctionAST {
+ FunctionAST(std::unique_ptr<PrototypeAST> Proto,
+ std::unique_ptr<ExprAST> Body)
+ : Proto(std::move(Proto)), Body(std::move(Body)) {}
+
+ Function *IRGen(IRGenContext &C) const;
+
+ std::unique_ptr<PrototypeAST> Proto;
+ std::unique_ptr<ExprAST> Body;
+};
+
+//===----------------------------------------------------------------------===//
+// Parser
+//===----------------------------------------------------------------------===//
+
+/// CurTok/getNextToken - Provide a simple token buffer. CurTok is the current
+/// token the parser is looking at. getNextToken reads another token from the
+/// lexer and updates CurTok with its results.
+static int CurTok;
+static int getNextToken() {
+ return CurTok = gettok();
+}
+
+/// BinopPrecedence - This holds the precedence for each binary operator that is
+/// defined.
+static std::map<char, int> BinopPrecedence;
+
+/// GetTokPrecedence - Get the precedence of the pending binary operator token.
+static int GetTokPrecedence() {
+ if (!isascii(CurTok))
+ return -1;
+
+ // Make sure it's a declared binop.
+ int TokPrec = BinopPrecedence[CurTok];
+ if (TokPrec <= 0) return -1;
+ return TokPrec;
+}
+
+template <typename T>
+std::unique_ptr<T> ErrorU(const std::string &Str) {
+ std::cerr << "Error: " << Str << "\n";
+ return nullptr;
+}
+
+template <typename T>
+T* ErrorP(const std::string &Str) {
+ std::cerr << "Error: " << Str << "\n";
+ return nullptr;
+}
+
+static std::unique_ptr<ExprAST> ParseExpression();
+
+/// identifierexpr
+/// ::= identifier
+/// ::= identifier '(' expression* ')'
+static std::unique_ptr<ExprAST> ParseIdentifierExpr() {
+ std::string IdName = IdentifierStr;
+
+ getNextToken(); // eat identifier.
+
+ if (CurTok != '(') // Simple variable ref.
+ return llvm::make_unique<VariableExprAST>(IdName);
+
+ // Call.
+ getNextToken(); // eat (
+ std::vector<std::unique_ptr<ExprAST>> Args;
+ if (CurTok != ')') {
+ while (1) {
+ auto Arg = ParseExpression();
+ if (!Arg) return nullptr;
+ Args.push_back(std::move(Arg));
+
+ if (CurTok == ')') break;
+
+ if (CurTok != ',')
+ return ErrorU<CallExprAST>("Expected ')' or ',' in argument list");
+ getNextToken();
+ }
+ }
+
+ // Eat the ')'.
+ getNextToken();
+
+ return llvm::make_unique<CallExprAST>(IdName, std::move(Args));
+}
+
+/// numberexpr ::= number
+static std::unique_ptr<NumberExprAST> ParseNumberExpr() {
+ auto Result = llvm::make_unique<NumberExprAST>(NumVal);
+ getNextToken(); // consume the number
+ return Result;
+}
+
+/// parenexpr ::= '(' expression ')'
+static std::unique_ptr<ExprAST> ParseParenExpr() {
+ getNextToken(); // eat (.
+ auto V = ParseExpression();
+ if (!V)
+ return nullptr;
+
+ if (CurTok != ')')
+ return ErrorU<ExprAST>("expected ')'");
+ getNextToken(); // eat ).
+ return V;
+}
+
+/// ifexpr ::= 'if' expression 'then' expression 'else' expression
+static std::unique_ptr<ExprAST> ParseIfExpr() {
+ getNextToken(); // eat the if.
+
+ // condition.
+ auto Cond = ParseExpression();
+ if (!Cond)
+ return nullptr;
+
+ if (CurTok != tok_then)
+ return ErrorU<ExprAST>("expected then");
+ getNextToken(); // eat the then
+
+ auto Then = ParseExpression();
+ if (!Then)
+ return nullptr;
+
+ if (CurTok != tok_else)
+ return ErrorU<ExprAST>("expected else");
+
+ getNextToken();
+
+ auto Else = ParseExpression();
+ if (!Else)
+ return nullptr;
+
+ return llvm::make_unique<IfExprAST>(std::move(Cond), std::move(Then),
+ std::move(Else));
+}
+
+/// forexpr ::= 'for' identifier '=' expr ',' expr (',' expr)? 'in' expression
+static std::unique_ptr<ForExprAST> ParseForExpr() {
+ getNextToken(); // eat the for.
+
+ if (CurTok != tok_identifier)
+ return ErrorU<ForExprAST>("expected identifier after for");
+
+ std::string IdName = IdentifierStr;
+ getNextToken(); // eat identifier.
+
+ if (CurTok != '=')
+ return ErrorU<ForExprAST>("expected '=' after for");
+ getNextToken(); // eat '='.
+
+
+ auto Start = ParseExpression();
+ if (!Start)
+ return nullptr;
+ if (CurTok != ',')
+ return ErrorU<ForExprAST>("expected ',' after for start value");
+ getNextToken();
+
+ auto End = ParseExpression();
+ if (!End)
+ return nullptr;
+
+ // The step value is optional.
+ std::unique_ptr<ExprAST> Step;
+ if (CurTok == ',') {
+ getNextToken();
+ Step = ParseExpression();
+ if (!Step)
+ return nullptr;
+ }
+
+ if (CurTok != tok_in)
+ return ErrorU<ForExprAST>("expected 'in' after for");
+ getNextToken(); // eat 'in'.
+
+ auto Body = ParseExpression();
+ if (Body)
+ return nullptr;
+
+ return llvm::make_unique<ForExprAST>(IdName, std::move(Start), std::move(End),
+ std::move(Step), std::move(Body));
+}
+
+/// varexpr ::= 'var' identifier ('=' expression)?
+// (',' identifier ('=' expression)?)* 'in' expression
+static std::unique_ptr<VarExprAST> ParseVarExpr() {
+ getNextToken(); // eat the var.
+
+ VarExprAST::BindingList VarBindings;
+
+ // At least one variable name is required.
+ if (CurTok != tok_identifier)
+ return ErrorU<VarExprAST>("expected identifier after var");
+
+ while (1) {
+ std::string Name = IdentifierStr;
+ getNextToken(); // eat identifier.
+
+ // Read the optional initializer.
+ std::unique_ptr<ExprAST> Init;
+ if (CurTok == '=') {
+ getNextToken(); // eat the '='.
+
+ Init = ParseExpression();
+ if (!Init)
+ return nullptr;
+ }
+
+ VarBindings.push_back(VarExprAST::Binding(Name, std::move(Init)));
+
+ // End of var list, exit loop.
+ if (CurTok != ',') break;
+ getNextToken(); // eat the ','.
+
+ if (CurTok != tok_identifier)
+ return ErrorU<VarExprAST>("expected identifier list after var");
+ }
+
+ // At this point, we have to have 'in'.
+ if (CurTok != tok_in)
+ return ErrorU<VarExprAST>("expected 'in' keyword after 'var'");
+ getNextToken(); // eat 'in'.
+
+ auto Body = ParseExpression();
+ if (!Body)
+ return nullptr;
+
+ return llvm::make_unique<VarExprAST>(std::move(VarBindings), std::move(Body));
+}
+
+/// primary
+/// ::= identifierexpr
+/// ::= numberexpr
+/// ::= parenexpr
+/// ::= ifexpr
+/// ::= forexpr
+/// ::= varexpr
+static std::unique_ptr<ExprAST> ParsePrimary() {
+ switch (CurTok) {
+ default: return ErrorU<ExprAST>("unknown token when expecting an expression");
+ case tok_identifier: return ParseIdentifierExpr();
+ case tok_number: return ParseNumberExpr();
+ case '(': return ParseParenExpr();
+ case tok_if: return ParseIfExpr();
+ case tok_for: return ParseForExpr();
+ case tok_var: return ParseVarExpr();
+ }
+}
+
+/// unary
+/// ::= primary
+/// ::= '!' unary
+static std::unique_ptr<ExprAST> ParseUnary() {
+ // If the current token is not an operator, it must be a primary expr.
+ if (!isascii(CurTok) || CurTok == '(' || CurTok == ',')
+ return ParsePrimary();
+
+ // If this is a unary operator, read it.
+ int Opc = CurTok;
+ getNextToken();
+ if (auto Operand = ParseUnary())
+ return llvm::make_unique<UnaryExprAST>(Opc, std::move(Operand));
+ return nullptr;
+}
+
+/// binoprhs
+/// ::= ('+' unary)*
+static std::unique_ptr<ExprAST> ParseBinOpRHS(int ExprPrec,
+ std::unique_ptr<ExprAST> LHS) {
+ // If this is a binop, find its precedence.
+ while (1) {
+ int TokPrec = GetTokPrecedence();
+
+ // If this is a binop that binds at least as tightly as the current binop,
+ // consume it, otherwise we are done.
+ if (TokPrec < ExprPrec)
+ return LHS;
+
+ // Okay, we know this is a binop.
+ int BinOp = CurTok;
+ getNextToken(); // eat binop
+
+ // Parse the unary expression after the binary operator.
+ auto RHS = ParseUnary();
+ if (!RHS)
+ return nullptr;
+
+ // If BinOp binds less tightly with RHS than the operator after RHS, let
+ // the pending operator take RHS as its LHS.
+ int NextPrec = GetTokPrecedence();
+ if (TokPrec < NextPrec) {
+ RHS = ParseBinOpRHS(TokPrec+1, std::move(RHS));
+ if (!RHS)
+ return nullptr;
+ }
+
+ // Merge LHS/RHS.
+ LHS = llvm::make_unique<BinaryExprAST>(BinOp, std::move(LHS), std::move(RHS));
+ }
+}
+
+/// expression
+/// ::= unary binoprhs
+///
+static std::unique_ptr<ExprAST> ParseExpression() {
+ auto LHS = ParseUnary();
+ if (!LHS)
+ return nullptr;
+
+ return ParseBinOpRHS(0, std::move(LHS));
+}
+
+/// prototype
+/// ::= id '(' id* ')'
+/// ::= binary LETTER number? (id, id)
+/// ::= unary LETTER (id)
+static std::unique_ptr<PrototypeAST> ParsePrototype() {
+ std::string FnName;
+
+ unsigned Kind = 0; // 0 = identifier, 1 = unary, 2 = binary.
+ unsigned BinaryPrecedence = 30;
+
+ switch (CurTok) {
+ default:
+ return ErrorU<PrototypeAST>("Expected function name in prototype");
+ case tok_identifier:
+ FnName = IdentifierStr;
+ Kind = 0;
+ getNextToken();
+ break;
+ case tok_unary:
+ getNextToken();
+ if (!isascii(CurTok))
+ return ErrorU<PrototypeAST>("Expected unary operator");
+ FnName = "unary";
+ FnName += (char)CurTok;
+ Kind = 1;
+ getNextToken();
+ break;
+ case tok_binary:
+ getNextToken();
+ if (!isascii(CurTok))
+ return ErrorU<PrototypeAST>("Expected binary operator");
+ FnName = "binary";
+ FnName += (char)CurTok;
+ Kind = 2;
+ getNextToken();
+
+ // Read the precedence if present.
+ if (CurTok == tok_number) {
+ if (NumVal < 1 || NumVal > 100)
+ return ErrorU<PrototypeAST>("Invalid precedecnce: must be 1..100");
+ BinaryPrecedence = (unsigned)NumVal;
+ getNextToken();
+ }
+ break;
+ }
+
+ if (CurTok != '(')
+ return ErrorU<PrototypeAST>("Expected '(' in prototype");
+
+ std::vector<std::string> ArgNames;
+ while (getNextToken() == tok_identifier)
+ ArgNames.push_back(IdentifierStr);
+ if (CurTok != ')')
+ return ErrorU<PrototypeAST>("Expected ')' in prototype");
+
+ // success.
+ getNextToken(); // eat ')'.
+
+ // Verify right number of names for operator.
+ if (Kind && ArgNames.size() != Kind)
+ return ErrorU<PrototypeAST>("Invalid number of operands for operator");
+
+ return llvm::make_unique<PrototypeAST>(FnName, std::move(ArgNames), Kind != 0,
+ BinaryPrecedence);
+}
+
+/// definition ::= 'def' prototype expression
+static std::unique_ptr<FunctionAST> ParseDefinition() {
+ getNextToken(); // eat def.
+ auto Proto = ParsePrototype();
+ if (!Proto)
+ return nullptr;
+
+ if (auto Body = ParseExpression())
+ return llvm::make_unique<FunctionAST>(std::move(Proto), std::move(Body));
+ return nullptr;
+}
+
+/// toplevelexpr ::= expression
+static std::unique_ptr<FunctionAST> ParseTopLevelExpr() {
+ if (auto E = ParseExpression()) {
+ // Make an anonymous proto.
+ auto Proto =
+ llvm::make_unique<PrototypeAST>("__anon_expr", std::vector<std::string>());
+ return llvm::make_unique<FunctionAST>(std::move(Proto), std::move(E));
+ }
+ return nullptr;
+}
+
+/// external ::= 'extern' prototype
+static std::unique_ptr<PrototypeAST> ParseExtern() {
+ getNextToken(); // eat extern.
+ return ParsePrototype();
+}
+
+//===----------------------------------------------------------------------===//
+// Code Generation
+//===----------------------------------------------------------------------===//
+
+// FIXME: Obviously we can do better than this
+std::string GenerateUniqueName(const std::string &Root) {
+ static int i = 0;
+ std::ostringstream NameStream;
+ NameStream << Root << ++i;
+ return NameStream.str();
+}
+
+std::string MakeLegalFunctionName(std::string Name)
+{
+ std::string NewName;
+ assert(!Name.empty() && "Base name must not be empty");
+
+ // Start with what we have
+ NewName = Name;
+
+ // Look for a numberic first character
+ if (NewName.find_first_of("0123456789") == 0) {
+ NewName.insert(0, 1, 'n');
+ }
+
+ // Replace illegal characters with their ASCII equivalent
+ std::string legal_elements = "_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+ size_t pos;
+ while ((pos = NewName.find_first_not_of(legal_elements)) != std::string::npos) {
+ std::ostringstream NumStream;
+ NumStream << (int)NewName.at(pos);
+ NewName = NewName.replace(pos, 1, NumStream.str());
+ }
+
+ return NewName;
+}
+
+class SessionContext {
+public:
+ SessionContext(LLVMContext &C)
+ : Context(C), TM(EngineBuilder().selectTarget()) {}
+ LLVMContext& getLLVMContext() const { return Context; }
+ TargetMachine& getTarget() { return *TM; }
+ void addPrototypeAST(std::unique_ptr<PrototypeAST> P);
+ PrototypeAST* getPrototypeAST(const std::string &Name);
+private:
+ typedef std::map<std::string, std::unique_ptr<PrototypeAST>> PrototypeMap;
+
+ LLVMContext &Context;
+ std::unique_ptr<TargetMachine> TM;
+
+ PrototypeMap Prototypes;
+};
+
+void SessionContext::addPrototypeAST(std::unique_ptr<PrototypeAST> P) {
+ Prototypes[P->Name] = std::move(P);
+}
+
+PrototypeAST* SessionContext::getPrototypeAST(const std::string &Name) {
+ PrototypeMap::iterator I = Prototypes.find(Name);
+ if (I != Prototypes.end())
+ return I->second.get();
+ return nullptr;
+}
+
+class IRGenContext {
+public:
+
+ IRGenContext(SessionContext &S)
+ : Session(S),
+ M(new Module(GenerateUniqueName("jit_module_"),
+ Session.getLLVMContext())),
+ Builder(Session.getLLVMContext()) {
+ M->setDataLayout(Session.getTarget().getDataLayout());
+ }
+
+ SessionContext& getSession() { return Session; }
+ Module& getM() const { return *M; }
+ std::unique_ptr<Module> takeM() { return std::move(M); }
+ IRBuilder<>& getBuilder() { return Builder; }
+ LLVMContext& getLLVMContext() { return Session.getLLVMContext(); }
+ Function* getPrototype(const std::string &Name);
+
+ std::map<std::string, AllocaInst*> NamedValues;
+private:
+ SessionContext &Session;
+ std::unique_ptr<Module> M;
+ IRBuilder<> Builder;
+};
+
+Function* IRGenContext::getPrototype(const std::string &Name) {
+ if (Function *ExistingProto = M->getFunction(Name))
+ return ExistingProto;
+ if (PrototypeAST *ProtoAST = Session.getPrototypeAST(Name))
+ return ProtoAST->IRGen(*this);
+ return nullptr;
+}
+
+/// CreateEntryBlockAlloca - Create an alloca instruction in the entry block of
+/// the function. This is used for mutable variables etc.
+static AllocaInst *CreateEntryBlockAlloca(Function *TheFunction,
+ const std::string &VarName) {
+ IRBuilder<> TmpB(&TheFunction->getEntryBlock(),
+ TheFunction->getEntryBlock().begin());
+ return TmpB.CreateAlloca(Type::getDoubleTy(getGlobalContext()), 0,
+ VarName.c_str());
+}
+
+Value *NumberExprAST::IRGen(IRGenContext &C) const {
+ return ConstantFP::get(C.getLLVMContext(), APFloat(Val));
+}
+
+Value *VariableExprAST::IRGen(IRGenContext &C) const {
+ // Look this variable up in the function.
+ Value *V = C.NamedValues[Name];
+
+ if (V == 0)
+ return ErrorP<Value>("Unknown variable name '" + Name + "'");
+
+ // Load the value.
+ return C.getBuilder().CreateLoad(V, Name.c_str());
+}
+
+Value *UnaryExprAST::IRGen(IRGenContext &C) const {
+ if (Value *OperandV = Operand->IRGen(C)) {
+ std::string FnName = MakeLegalFunctionName(std::string("unary")+Opcode);
+ if (Function *F = C.getPrototype(FnName))
+ return C.getBuilder().CreateCall(F, OperandV, "unop");
+ return ErrorP<Value>("Unknown unary operator");
+ }
+
+ // Could not codegen operand - return null.
+ return nullptr;
+}
+
+Value *BinaryExprAST::IRGen(IRGenContext &C) const {
+ // Special case '=' because we don't want to emit the LHS as an expression.
+ if (Op == '=') {
+ // Assignment requires the LHS to be an identifier.
+ auto LHSVar = static_cast<VariableExprAST&>(*LHS);
+ // Codegen the RHS.
+ Value *Val = RHS->IRGen(C);
+ if (!Val) return nullptr;
+
+ // Look up the name.
+ if (auto Variable = C.NamedValues[LHSVar.Name]) {
+ C.getBuilder().CreateStore(Val, Variable);
+ return Val;
+ }
+ return ErrorP<Value>("Unknown variable name");
+ }
+
+ Value *L = LHS->IRGen(C);
+ Value *R = RHS->IRGen(C);
+ if (!L || !R) return nullptr;
+
+ switch (Op) {
+ case '+': return C.getBuilder().CreateFAdd(L, R, "addtmp");
+ case '-': return C.getBuilder().CreateFSub(L, R, "subtmp");
+ case '*': return C.getBuilder().CreateFMul(L, R, "multmp");
+ case '/': return C.getBuilder().CreateFDiv(L, R, "divtmp");
+ case '<':
+ L = C.getBuilder().CreateFCmpULT(L, R, "cmptmp");
+ // Convert bool 0/1 to double 0.0 or 1.0
+ return C.getBuilder().CreateUIToFP(L, Type::getDoubleTy(getGlobalContext()),
+ "booltmp");
+ default: break;
+ }
+
+ // If it wasn't a builtin binary operator, it must be a user defined one. Emit
+ // a call to it.
+ std::string FnName = MakeLegalFunctionName(std::string("binary")+Op);
+ if (Function *F = C.getPrototype(FnName)) {
+ Value *Ops[] = { L, R };
+ return C.getBuilder().CreateCall(F, Ops, "binop");
+ }
+
+ return ErrorP<Value>("Unknown binary operator");
+}
+
+Value *CallExprAST::IRGen(IRGenContext &C) const {
+ // Look up the name in the global module table.
+ if (auto CalleeF = C.getPrototype(CalleeName)) {
+ // If argument mismatch error.
+ if (CalleeF->arg_size() != Args.size())
+ return ErrorP<Value>("Incorrect # arguments passed");
+
+ std::vector<Value*> ArgsV;
+ for (unsigned i = 0, e = Args.size(); i != e; ++i) {
+ ArgsV.push_back(Args[i]->IRGen(C));
+ if (!ArgsV.back()) return nullptr;
+ }
+
+ return C.getBuilder().CreateCall(CalleeF, ArgsV, "calltmp");
+ }
+
+ return ErrorP<Value>("Unknown function referenced");
+}
+
+Value *IfExprAST::IRGen(IRGenContext &C) const {
+ Value *CondV = Cond->IRGen(C);
+ if (!CondV) return nullptr;
+
+ // Convert condition to a bool by comparing equal to 0.0.
+ ConstantFP *FPZero =
+ ConstantFP::get(C.getLLVMContext(), APFloat(0.0));
+ CondV = C.getBuilder().CreateFCmpONE(CondV, FPZero, "ifcond");
+
+ Function *TheFunction = C.getBuilder().GetInsertBlock()->getParent();
+
+ // Create blocks for the then and else cases. Insert the 'then' block at the
+ // end of the function.
+ BasicBlock *ThenBB = BasicBlock::Create(C.getLLVMContext(), "then", TheFunction);
+ BasicBlock *ElseBB = BasicBlock::Create(C.getLLVMContext(), "else");
+ BasicBlock *MergeBB = BasicBlock::Create(C.getLLVMContext(), "ifcont");
+
+ C.getBuilder().CreateCondBr(CondV, ThenBB, ElseBB);
+
+ // Emit then value.
+ C.getBuilder().SetInsertPoint(ThenBB);
+
+ Value *ThenV = Then->IRGen(C);
+ if (!ThenV) return nullptr;
+
+ C.getBuilder().CreateBr(MergeBB);
+ // Codegen of 'Then' can change the current block, update ThenBB for the PHI.
+ ThenBB = C.getBuilder().GetInsertBlock();
+
+ // Emit else block.
+ TheFunction->getBasicBlockList().push_back(ElseBB);
+ C.getBuilder().SetInsertPoint(ElseBB);
+
+ Value *ElseV = Else->IRGen(C);
+ if (!ElseV) return nullptr;
+
+ C.getBuilder().CreateBr(MergeBB);
+ // Codegen of 'Else' can change the current block, update ElseBB for the PHI.
+ ElseBB = C.getBuilder().GetInsertBlock();
+
+ // Emit merge block.
+ TheFunction->getBasicBlockList().push_back(MergeBB);
+ C.getBuilder().SetInsertPoint(MergeBB);
+ PHINode *PN = C.getBuilder().CreatePHI(Type::getDoubleTy(getGlobalContext()), 2,
+ "iftmp");
+
+ PN->addIncoming(ThenV, ThenBB);
+ PN->addIncoming(ElseV, ElseBB);
+ return PN;
+}
+
+Value *ForExprAST::IRGen(IRGenContext &C) const {
+ // Output this as:
+ // var = alloca double
+ // ...
+ // start = startexpr
+ // store start -> var
+ // goto loop
+ // loop:
+ // ...
+ // bodyexpr
+ // ...
+ // loopend:
+ // step = stepexpr
+ // endcond = endexpr
+ //
+ // curvar = load var
+ // nextvar = curvar + step
+ // store nextvar -> var
+ // br endcond, loop, endloop
+ // outloop:
+
+ Function *TheFunction = C.getBuilder().GetInsertBlock()->getParent();
+
+ // Create an alloca for the variable in the entry block.
+ AllocaInst *Alloca = CreateEntryBlockAlloca(TheFunction, VarName);
+
+ // Emit the start code first, without 'variable' in scope.
+ Value *StartVal = Start->IRGen(C);
+ if (!StartVal) return nullptr;
+
+ // Store the value into the alloca.
+ C.getBuilder().CreateStore(StartVal, Alloca);
+
+ // Make the new basic block for the loop header, inserting after current
+ // block.
+ BasicBlock *LoopBB = BasicBlock::Create(getGlobalContext(), "loop", TheFunction);
+
+ // Insert an explicit fall through from the current block to the LoopBB.
+ C.getBuilder().CreateBr(LoopBB);
+
+ // Start insertion in LoopBB.
+ C.getBuilder().SetInsertPoint(LoopBB);
+
+ // Within the loop, the variable is defined equal to the PHI node. If it
+ // shadows an existing variable, we have to restore it, so save it now.
+ AllocaInst *OldVal = C.NamedValues[VarName];
+ C.NamedValues[VarName] = Alloca;
+
+ // Emit the body of the loop. This, like any other expr, can change the
+ // current BB. Note that we ignore the value computed by the body, but don't
+ // allow an error.
+ if (!Body->IRGen(C))
+ return nullptr;
+
+ // Emit the step value.
+ Value *StepVal;
+ if (Step) {
+ StepVal = Step->IRGen(C);
+ if (!StepVal) return nullptr;
+ } else {
+ // If not specified, use 1.0.
+ StepVal = ConstantFP::get(getGlobalContext(), APFloat(1.0));
+ }
+
+ // Compute the end condition.
+ Value *EndCond = End->IRGen(C);
+ if (EndCond == 0) return EndCond;
+
+ // Reload, increment, and restore the alloca. This handles the case where
+ // the body of the loop mutates the variable.
+ Value *CurVar = C.getBuilder().CreateLoad(Alloca, VarName.c_str());
+ Value *NextVar = C.getBuilder().CreateFAdd(CurVar, StepVal, "nextvar");
+ C.getBuilder().CreateStore(NextVar, Alloca);
+
+ // Convert condition to a bool by comparing equal to 0.0.
+ EndCond = C.getBuilder().CreateFCmpONE(EndCond,
+ ConstantFP::get(getGlobalContext(), APFloat(0.0)),
+ "loopcond");
+
+ // Create the "after loop" block and insert it.
+ BasicBlock *AfterBB = BasicBlock::Create(getGlobalContext(), "afterloop", TheFunction);
+
+ // Insert the conditional branch into the end of LoopEndBB.
+ C.getBuilder().CreateCondBr(EndCond, LoopBB, AfterBB);
+
+ // Any new code will be inserted in AfterBB.
+ C.getBuilder().SetInsertPoint(AfterBB);
+
+ // Restore the unshadowed variable.
+ if (OldVal)
+ C.NamedValues[VarName] = OldVal;
+ else
+ C.NamedValues.erase(VarName);
+
+
+ // for expr always returns 0.0.
+ return Constant::getNullValue(Type::getDoubleTy(getGlobalContext()));
+}
+
+Value *VarExprAST::IRGen(IRGenContext &C) const {
+ std::vector<AllocaInst *> OldBindings;
+
+ Function *TheFunction = C.getBuilder().GetInsertBlock()->getParent();
+
+ // Register all variables and emit their initializer.
+ for (unsigned i = 0, e = VarBindings.size(); i != e; ++i) {
+ auto &VarName = VarBindings[i].first;
+ auto &Init = VarBindings[i].second;
+
+ // Emit the initializer before adding the variable to scope, this prevents
+ // the initializer from referencing the variable itself, and permits stuff
+ // like this:
+ // var a = 1 in
+ // var a = a in ... # refers to outer 'a'.
+ Value *InitVal;
+ if (Init) {
+ InitVal = Init->IRGen(C);
+ if (!InitVal) return nullptr;
+ } else // If not specified, use 0.0.
+ InitVal = ConstantFP::get(getGlobalContext(), APFloat(0.0));
+
+ AllocaInst *Alloca = CreateEntryBlockAlloca(TheFunction, VarName);
+ C.getBuilder().CreateStore(InitVal, Alloca);
+
+ // Remember the old variable binding so that we can restore the binding when
+ // we unrecurse.
+ OldBindings.push_back(C.NamedValues[VarName]);
+
+ // Remember this binding.
+ C.NamedValues[VarName] = Alloca;
+ }
+
+ // Codegen the body, now that all vars are in scope.
+ Value *BodyVal = Body->IRGen(C);
+ if (!BodyVal) return nullptr;
+
+ // Pop all our variables from scope.
+ for (unsigned i = 0, e = VarBindings.size(); i != e; ++i)
+ C.NamedValues[VarBindings[i].first] = OldBindings[i];
+
+ // Return the body computation.
+ return BodyVal;
+}
+
+Function *PrototypeAST::IRGen(IRGenContext &C) const {
+ std::string FnName = MakeLegalFunctionName(Name);
+
+ // Make the function type: double(double,double) etc.
+ std::vector<Type*> Doubles(Args.size(),
+ Type::getDoubleTy(getGlobalContext()));
+ FunctionType *FT = FunctionType::get(Type::getDoubleTy(getGlobalContext()),
+ Doubles, false);
+ Function *F = Function::Create(FT, Function::ExternalLinkage, FnName,
+ &C.getM());
+
+ // If F conflicted, there was already something named 'FnName'. If it has a
+ // body, don't allow redefinition or reextern.
+ if (F->getName() != FnName) {
+ // Delete the one we just made and get the existing one.
+ F->eraseFromParent();
+ F = C.getM().getFunction(Name);
+
+ // If F already has a body, reject this.
+ if (!F->empty()) {
+ ErrorP<Function>("redefinition of function");
+ return nullptr;
+ }
+
+ // If F took a different number of args, reject.
+ if (F->arg_size() != Args.size()) {
+ ErrorP<Function>("redefinition of function with different # args");
+ return nullptr;
+ }
+ }
+
+ // Set names for all arguments.
+ unsigned Idx = 0;
+ for (Function::arg_iterator AI = F->arg_begin(); Idx != Args.size();
+ ++AI, ++Idx)
+ AI->setName(Args[Idx]);
+
+ return F;
+}
+
+/// CreateArgumentAllocas - Create an alloca for each argument and register the
+/// argument in the symbol table so that references to it will succeed.
+void PrototypeAST::CreateArgumentAllocas(Function *F, IRGenContext &C) {
+ Function::arg_iterator AI = F->arg_begin();
+ for (unsigned Idx = 0, e = Args.size(); Idx != e; ++Idx, ++AI) {
+ // Create an alloca for this variable.
+ AllocaInst *Alloca = CreateEntryBlockAlloca(F, Args[Idx]);
+
+ // Store the initial value into the alloca.
+ C.getBuilder().CreateStore(AI, Alloca);
+
+ // Add arguments to variable symbol table.
+ C.NamedValues[Args[Idx]] = Alloca;
+ }
+}
+
+Function *FunctionAST::IRGen(IRGenContext &C) const {
+ C.NamedValues.clear();
+
+ Function *TheFunction = Proto->IRGen(C);
+ if (!TheFunction)
+ return nullptr;
+
+ // If this is an operator, install it.
+ if (Proto->isBinaryOp())
+ BinopPrecedence[Proto->getOperatorName()] = Proto->Precedence;
+
+ // Create a new basic block to start insertion into.
+ BasicBlock *BB = BasicBlock::Create(getGlobalContext(), "entry", TheFunction);
+ C.getBuilder().SetInsertPoint(BB);
+
+ // Add all arguments to the symbol table and create their allocas.
+ Proto->CreateArgumentAllocas(TheFunction, C);
+
+ if (Value *RetVal = Body->IRGen(C)) {
+ // Finish off the function.
+ C.getBuilder().CreateRet(RetVal);
+
+ // Validate the generated code, checking for consistency.
+ verifyFunction(*TheFunction);
+
+ return TheFunction;
+ }
+
+ // Error reading body, remove function.
+ TheFunction->eraseFromParent();
+
+ if (Proto->isBinaryOp())
+ BinopPrecedence.erase(Proto->getOperatorName());
+ return nullptr;
+}
+
+//===----------------------------------------------------------------------===//
+// Top-Level parsing and JIT Driver
+//===----------------------------------------------------------------------===//
+
+static std::unique_ptr<llvm::Module> IRGen(SessionContext &S,
+ const FunctionAST &F) {
+ IRGenContext C(S);
+ auto LF = F.IRGen(C);
+ if (!LF)
+ return nullptr;
+#ifndef MINIMAL_STDERR_OUTPUT
+ fprintf(stderr, "Read function definition:");
+ LF->dump();
+#endif
+ return C.takeM();
+}
+
+template <typename T>
+static std::vector<T> singletonSet(T t) {
+ std::vector<T> Vec;
+ Vec.push_back(std::move(t));
+ return Vec;
+}
+
+static void EarthShatteringKaboom() {
+ fprintf(stderr, "Earth shattering kaboom.");
+ exit(1);
+}
+
+class KaleidoscopeJIT {
+public:
+ typedef ObjectLinkingLayer<> ObjLayerT;
+ typedef IRCompileLayer<ObjLayerT> CompileLayerT;
+ typedef LazyEmittingLayer<CompileLayerT> LazyEmitLayerT;
+ typedef LazyEmitLayerT::ModuleSetHandleT ModuleHandleT;
+
+ KaleidoscopeJIT(SessionContext &Session)
+ : Session(Session),
+ Mang(Session.getTarget().getDataLayout()),
+ ObjectLayer(
+ [](){ return llvm::make_unique<SectionMemoryManager>(); }),
+ CompileLayer(ObjectLayer, SimpleCompiler(Session.getTarget())),
+ LazyEmitLayer(CompileLayer),
+ CompileCallbacks(LazyEmitLayer, Session.getLLVMContext(),
+ reinterpret_cast<uintptr_t>(EarthShatteringKaboom),
+ 64) {}
+
+ std::string mangle(const std::string &Name) {
+ std::string MangledName;
+ {
+ raw_string_ostream MangledNameStream(MangledName);
+ Mang.getNameWithPrefix(MangledNameStream, Name);
+ }
+ return MangledName;
+ }
+
+ void addFunctionDefinition(std::unique_ptr<FunctionAST> FnAST) {
+ FunctionDefs[mangle(FnAST->Proto->Name)] = std::move(FnAST);
+ }
+
+ ModuleHandleT addModule(std::unique_ptr<Module> M) {
+ // We need a memory manager to allocate memory and resolve symbols for this
+ // new module. Create one that resolves symbols by looking back into the
+ // JIT.
+ auto MM = createLookasideRTDyldMM<SectionMemoryManager>(
+ [&](const std::string &Name) {
+ // First try to find 'Name' within the JIT.
+ if (auto Symbol = findSymbol(Name))
+ return Symbol.getAddress();
+
+ // If we don't already have a definition of 'Name' then search
+ // the ASTs.
+ return searchUncompiledASTs(Name);
+ },
+ [](const std::string &S) { return 0; } );
+
+ return LazyEmitLayer.addModuleSet(singletonSet(std::move(M)),
+ std::move(MM));
+ }
+
+ void removeModule(ModuleHandleT H) { LazyEmitLayer.removeModuleSet(H); }
+
+ JITSymbol findSymbol(const std::string &Name) {
+ return LazyEmitLayer.findSymbol(Name, true);
+ }
+
+ JITSymbol findSymbolIn(ModuleHandleT H, const std::string &Name) {
+ return LazyEmitLayer.findSymbolIn(H, Name, true);
+ }
+
+ JITSymbol findUnmangledSymbol(const std::string &Name) {
+ return findSymbol(mangle(Name));
+ }
+
+ JITSymbol findUnmangledSymbolIn(ModuleHandleT H, const std::string &Name) {
+ return findSymbolIn(H, mangle(Name));
+ }
+
+private:
+
+ // This method searches the FunctionDefs map for a definition of 'Name'. If it
+ // finds one it generates a stub for it and returns the address of the stub.
+ TargetAddress searchUncompiledASTs(const std::string &Name) {
+ auto DefI = FunctionDefs.find(Name);
+ if (DefI == FunctionDefs.end())
+ return 0;
+
+ // We have AST for 'Name'. IRGen a stub for it and add it to the JIT.
+ // FIXME: What happens if IRGen fails?
+ auto H = irGenStub(std::move(DefI->second));
+
+ // Remove the function definition's AST now that we're
+ // finished with it.
+ FunctionDefs.erase(DefI);
+
+ // Return the address of the stub.
+ return findSymbolIn(H, Name).getAddress();
+ }
+
+ // This method will take the AST for a function definition and IR-gen a stub
+ // for that function that will, on first call, IR-gen the actual body of the
+ // function.
+ ModuleHandleT irGenStub(std::unique_ptr<FunctionAST> FnAST) {
+ // Step 1) IRGen a prototype for the stub. This will have the same type as
+ // the function.
+ IRGenContext C(Session);
+ Function *F = FnAST->Proto->IRGen(C);
+
+ // Step 2) Get a compile callback that can be used to compile the body of
+ // the function. The resulting CallbackInfo type will let us set the
+ // compile and update actions for the callback, and get a pointer to
+ // the jit trampoline that we need to call to trigger those actions.
+ auto CallbackInfo =
+ CompileCallbacks.getCompileCallback(*F->getFunctionType());
+
+ // Step 3) Create a stub that will indirectly call the body of this
+ // function once it is compiled. Initially, set the function
+ // pointer for the indirection to point at the trampoline.
+ std::string BodyPtrName = (F->getName() + "$address").str();
+ GlobalVariable *FunctionBodyPointer =
+ createImplPointer(*F, BodyPtrName, CallbackInfo.getAddress());
+ makeStub(*F, *FunctionBodyPointer);
+
+ // Step 4) Add the module containing the stub to the JIT.
+ auto H = addModule(C.takeM());
+
+ // Step 5) Set the compile and update actions.
+ //
+ // The compile action will IRGen the function and add it to the JIT, then
+ // request its address, which will trigger codegen. Since we don't need the
+ // AST after this, we pass ownership of the AST into the compile action:
+ // compile actions (and update actions) are deleted after they're run, so
+ // this will free the AST for us.
+ //
+ // The update action will update FunctionBodyPointer to point at the newly
+ // compiled function.
+ std::shared_ptr<FunctionAST> Fn = std::move(FnAST);
+ CallbackInfo.setCompileAction([this, Fn]() {
+ auto H = addModule(IRGen(Session, *Fn));
+ return findUnmangledSymbolIn(H, Fn->Proto->Name).getAddress();
+ });
+ CallbackInfo.setUpdateAction(
+ CompileCallbacks.getLocalFPUpdater(H, mangle(BodyPtrName)));
+
+ return H;
+ }
+
+ SessionContext &Session;
+ Mangler Mang;
+ ObjLayerT ObjectLayer;
+ CompileLayerT CompileLayer;
+ LazyEmitLayerT LazyEmitLayer;
+
+ std::map<std::string, std::unique_ptr<FunctionAST>> FunctionDefs;
+
+ JITCompileCallbackManager<LazyEmitLayerT, OrcX86_64> CompileCallbacks;
+};
+
+static void HandleDefinition(SessionContext &S, KaleidoscopeJIT &J) {
+ if (auto F = ParseDefinition()) {
+ S.addPrototypeAST(llvm::make_unique<PrototypeAST>(*F->Proto));
+ J.addFunctionDefinition(std::move(F));
+ } else {
+ // Skip token for error recovery.
+ getNextToken();
+ }
+}
+
+static void HandleExtern(SessionContext &S) {
+ if (auto P = ParseExtern())
+ S.addPrototypeAST(std::move(P));
+ else {
+ // Skip token for error recovery.
+ getNextToken();
+ }
+}
+
+static void HandleTopLevelExpression(SessionContext &S, KaleidoscopeJIT &J) {
+ // Evaluate a top-level expression into an anonymous function.
+ if (auto F = ParseTopLevelExpr()) {
+ IRGenContext C(S);
+ if (auto ExprFunc = F->IRGen(C)) {
+#ifndef MINIMAL_STDERR_OUTPUT
+ std::cerr << "Expression function:\n";
+ ExprFunc->dump();
+#endif
+ // Add the CodeGen'd module to the JIT. Keep a handle to it: We can remove
+ // this module as soon as we've executed Function ExprFunc.
+ auto H = J.addModule(C.takeM());
+
+ // Get the address of the JIT'd function in memory.
+ auto ExprSymbol = J.findUnmangledSymbol("__anon_expr");
+
+ // Cast it to the right type (takes no arguments, returns a double) so we
+ // can call it as a native function.
+ double (*FP)() = (double (*)())(intptr_t)ExprSymbol.getAddress();
+#ifdef MINIMAL_STDERR_OUTPUT
+ FP();
+#else
+ std::cerr << "Evaluated to " << FP() << "\n";
+#endif
+
+ // Remove the function.
+ J.removeModule(H);
+ }
+ } else {
+ // Skip token for error recovery.
+ getNextToken();
+ }
+}
+
+/// top ::= definition | external | expression | ';'
+static void MainLoop() {
+ SessionContext S(getGlobalContext());
+ KaleidoscopeJIT J(S);
+
+ while (1) {
+ switch (CurTok) {
+ case tok_eof: return;
+ case ';': getNextToken(); continue; // ignore top-level semicolons.
+ case tok_def: HandleDefinition(S, J); break;
+ case tok_extern: HandleExtern(S); break;
+ default: HandleTopLevelExpression(S, J); break;
+ }
+#ifndef MINIMAL_STDERR_OUTPUT
+ std::cerr << "ready> ";
+#endif
+ }
+}
+
+//===----------------------------------------------------------------------===//
+// "Library" functions that can be "extern'd" from user code.
+//===----------------------------------------------------------------------===//
+
+/// putchard - putchar that takes a double and returns 0.
+extern "C"
+double putchard(double X) {
+ putchar((char)X);
+ return 0;
+}
+
+/// printd - printf that takes a double prints it as "%f\n", returning 0.
+extern "C"
+double printd(double X) {
+ printf("%f", X);
+ return 0;
+}
+
+extern "C"
+double printlf() {
+ printf("\n");
+ return 0;
+}
+
+//===----------------------------------------------------------------------===//
+// Main driver code.
+//===----------------------------------------------------------------------===//
+
+int main() {
+ InitializeNativeTarget();
+ InitializeNativeTargetAsmPrinter();
+ InitializeNativeTargetAsmParser();
+
+ // Install standard binary operators.
+ // 1 is lowest precedence.
+ BinopPrecedence['='] = 2;
+ BinopPrecedence['<'] = 10;
+ BinopPrecedence['+'] = 20;
+ BinopPrecedence['-'] = 20;
+ BinopPrecedence['/'] = 40;
+ BinopPrecedence['*'] = 40; // highest.
+
+ // Prime the first token.
+#ifndef MINIMAL_STDERR_OUTPUT
+ std::cerr << "ready> ";
+#endif
+ getNextToken();
+
+ std::cerr << std::fixed;
+
+ // Run the main "interpreter loop" now.
+ MainLoop();
+
+ return 0;
+}
+
diff --git a/examples/Kaleidoscope/Orc/initial/CMakeLists.txt b/examples/Kaleidoscope/Orc/initial/CMakeLists.txt
new file mode 100644
index 0000000..4f21e1c
--- /dev/null
+++ b/examples/Kaleidoscope/Orc/initial/CMakeLists.txt
@@ -0,0 +1,12 @@
+set(LLVM_LINK_COMPONENTS
+ Core
+ ExecutionEngine
+ Object
+ RuntimeDyld
+ Support
+ native
+ )
+
+add_kaleidoscope_chapter(Kaleidoscope-Orc-initial
+ toy.cpp
+ )
diff --git a/examples/Kaleidoscope/Orc/initial/Makefile b/examples/Kaleidoscope/Orc/initial/Makefile
new file mode 100644
index 0000000..5536314
--- /dev/null
+++ b/examples/Kaleidoscope/Orc/initial/Makefile
@@ -0,0 +1,17 @@
+UNAME := $(shell uname -s)
+
+ifeq ($(UNAME),Darwin)
+ CXX := xcrun --sdk macosx clang++
+else
+ CXX := clang++
+endif
+
+LLVM_CXXFLAGS := $(shell llvm-config --cxxflags)
+LLVM_LDFLAGS := $(shell llvm-config --ldflags --system-libs --libs core orcjit native)
+
+toy: toy.cpp
+ $(CXX) $(LLVM_CXXFLAGS) -Wall -std=c++11 -g -O0 -rdynamic -fno-rtti -o toy toy.cpp $(LLVM_LDFLAGS)
+
+.PHONY: clean
+clean:
+ rm -f toy
diff --git a/examples/Kaleidoscope/Orc/initial/README.txt b/examples/Kaleidoscope/Orc/initial/README.txt
new file mode 100644
index 0000000..5f4cbbf
--- /dev/null
+++ b/examples/Kaleidoscope/Orc/initial/README.txt
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===/
+// Kaleidoscope with Orc - Initial Version
+//===----------------------------------------------------------------------===//
+
+This version of Kaleidoscope with Orc demonstrates fully eager compilation. When
+a function definition or top-level expression is entered it is immediately
+translated (IRGen'd) to LLVM IR and added to the JIT, where it is code-gen'd to
+native code and either stored (for function definitions) or executed (for
+top-level expressions).
+
+This directory contain a Makefile that allow the code to be built in a
+standalone manner, independent of the larger LLVM build infrastructure. To build
+the program you will need to have 'clang++' and 'llvm-config' in your path.
diff --git a/examples/Kaleidoscope/Orc/initial/toy.cpp b/examples/Kaleidoscope/Orc/initial/toy.cpp
new file mode 100644
index 0000000..1b65e8c
--- /dev/null
+++ b/examples/Kaleidoscope/Orc/initial/toy.cpp
@@ -0,0 +1,1333 @@
+#include "llvm/Analysis/Passes.h"
+#include "llvm/ExecutionEngine/Orc/CompileUtils.h"
+#include "llvm/ExecutionEngine/Orc/IRCompileLayer.h"
+#include "llvm/ExecutionEngine/Orc/LazyEmittingLayer.h"
+#include "llvm/ExecutionEngine/Orc/ObjectLinkingLayer.h"
+#include "llvm/IR/DataLayout.h"
+#include "llvm/IR/DerivedTypes.h"
+#include "llvm/IR/IRBuilder.h"
+#include "llvm/IR/LegacyPassManager.h"
+#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/Module.h"
+#include "llvm/IR/Verifier.h"
+#include "llvm/Support/TargetSelect.h"
+#include "llvm/Transforms/Scalar.h"
+#include <cctype>
+#include <iomanip>
+#include <iostream>
+#include <map>
+#include <sstream>
+#include <string>
+#include <vector>
+
+using namespace llvm;
+using namespace llvm::orc;
+
+//===----------------------------------------------------------------------===//
+// Lexer
+//===----------------------------------------------------------------------===//
+
+// The lexer returns tokens [0-255] if it is an unknown character, otherwise one
+// of these for known things.
+enum Token {
+ tok_eof = -1,
+
+ // commands
+ tok_def = -2, tok_extern = -3,
+
+ // primary
+ tok_identifier = -4, tok_number = -5,
+
+ // control
+ tok_if = -6, tok_then = -7, tok_else = -8,
+ tok_for = -9, tok_in = -10,
+
+ // operators
+ tok_binary = -11, tok_unary = -12,
+
+ // var definition
+ tok_var = -13
+};
+
+static std::string IdentifierStr; // Filled in if tok_identifier
+static double NumVal; // Filled in if tok_number
+
+/// gettok - Return the next token from standard input.
+static int gettok() {
+ static int LastChar = ' ';
+
+ // Skip any whitespace.
+ while (isspace(LastChar))
+ LastChar = getchar();
+
+ if (isalpha(LastChar)) { // identifier: [a-zA-Z][a-zA-Z0-9]*
+ IdentifierStr = LastChar;
+ while (isalnum((LastChar = getchar())))
+ IdentifierStr += LastChar;
+
+ if (IdentifierStr == "def") return tok_def;
+ if (IdentifierStr == "extern") return tok_extern;
+ if (IdentifierStr == "if") return tok_if;
+ if (IdentifierStr == "then") return tok_then;
+ if (IdentifierStr == "else") return tok_else;
+ if (IdentifierStr == "for") return tok_for;
+ if (IdentifierStr == "in") return tok_in;
+ if (IdentifierStr == "binary") return tok_binary;
+ if (IdentifierStr == "unary") return tok_unary;
+ if (IdentifierStr == "var") return tok_var;
+ return tok_identifier;
+ }
+
+ if (isdigit(LastChar) || LastChar == '.') { // Number: [0-9.]+
+ std::string NumStr;
+ do {
+ NumStr += LastChar;
+ LastChar = getchar();
+ } while (isdigit(LastChar) || LastChar == '.');
+
+ NumVal = strtod(NumStr.c_str(), 0);
+ return tok_number;
+ }
+
+ if (LastChar == '#') {
+ // Comment until end of line.
+ do LastChar = getchar();
+ while (LastChar != EOF && LastChar != '\n' && LastChar != '\r');
+
+ if (LastChar != EOF)
+ return gettok();
+ }
+
+ // Check for end of file. Don't eat the EOF.
+ if (LastChar == EOF)
+ return tok_eof;
+
+ // Otherwise, just return the character as its ascii value.
+ int ThisChar = LastChar;
+ LastChar = getchar();
+ return ThisChar;
+}
+
+//===----------------------------------------------------------------------===//
+// Abstract Syntax Tree (aka Parse Tree)
+//===----------------------------------------------------------------------===//
+
+class IRGenContext;
+
+/// ExprAST - Base class for all expression nodes.
+struct ExprAST {
+ virtual ~ExprAST() {}
+ virtual Value *IRGen(IRGenContext &C) const = 0;
+};
+
+/// NumberExprAST - Expression class for numeric literals like "1.0".
+struct NumberExprAST : public ExprAST {
+ NumberExprAST(double Val) : Val(Val) {}
+ Value *IRGen(IRGenContext &C) const override;
+
+ double Val;
+};
+
+/// VariableExprAST - Expression class for referencing a variable, like "a".
+struct VariableExprAST : public ExprAST {
+ VariableExprAST(std::string Name) : Name(std::move(Name)) {}
+ Value *IRGen(IRGenContext &C) const override;
+
+ std::string Name;
+};
+
+/// UnaryExprAST - Expression class for a unary operator.
+struct UnaryExprAST : public ExprAST {
+ UnaryExprAST(char Opcode, std::unique_ptr<ExprAST> Operand)
+ : Opcode(std::move(Opcode)), Operand(std::move(Operand)) {}
+
+ Value *IRGen(IRGenContext &C) const override;
+
+ char Opcode;
+ std::unique_ptr<ExprAST> Operand;
+};
+
+/// BinaryExprAST - Expression class for a binary operator.
+struct BinaryExprAST : public ExprAST {
+ BinaryExprAST(char Op, std::unique_ptr<ExprAST> LHS,
+ std::unique_ptr<ExprAST> RHS)
+ : Op(Op), LHS(std::move(LHS)), RHS(std::move(RHS)) {}
+
+ Value *IRGen(IRGenContext &C) const override;
+
+ char Op;
+ std::unique_ptr<ExprAST> LHS, RHS;
+};
+
+/// CallExprAST - Expression class for function calls.
+struct CallExprAST : public ExprAST {
+ CallExprAST(std::string CalleeName,
+ std::vector<std::unique_ptr<ExprAST>> Args)
+ : CalleeName(std::move(CalleeName)), Args(std::move(Args)) {}
+
+ Value *IRGen(IRGenContext &C) const override;
+
+ std::string CalleeName;
+ std::vector<std::unique_ptr<ExprAST>> Args;
+};
+
+/// IfExprAST - Expression class for if/then/else.
+struct IfExprAST : public ExprAST {
+ IfExprAST(std::unique_ptr<ExprAST> Cond, std::unique_ptr<ExprAST> Then,
+ std::unique_ptr<ExprAST> Else)
+ : Cond(std::move(Cond)), Then(std::move(Then)), Else(std::move(Else)) {}
+ Value *IRGen(IRGenContext &C) const override;
+
+ std::unique_ptr<ExprAST> Cond, Then, Else;
+};
+
+/// ForExprAST - Expression class for for/in.
+struct ForExprAST : public ExprAST {
+ ForExprAST(std::string VarName, std::unique_ptr<ExprAST> Start,
+ std::unique_ptr<ExprAST> End, std::unique_ptr<ExprAST> Step,
+ std::unique_ptr<ExprAST> Body)
+ : VarName(std::move(VarName)), Start(std::move(Start)), End(std::move(End)),
+ Step(std::move(Step)), Body(std::move(Body)) {}
+
+ Value *IRGen(IRGenContext &C) const override;
+
+ std::string VarName;
+ std::unique_ptr<ExprAST> Start, End, Step, Body;
+};
+
+/// VarExprAST - Expression class for var/in
+struct VarExprAST : public ExprAST {
+ typedef std::pair<std::string, std::unique_ptr<ExprAST>> Binding;
+ typedef std::vector<Binding> BindingList;
+
+ VarExprAST(BindingList VarBindings, std::unique_ptr<ExprAST> Body)
+ : VarBindings(std::move(VarBindings)), Body(std::move(Body)) {}
+
+ Value *IRGen(IRGenContext &C) const override;
+
+ BindingList VarBindings;
+ std::unique_ptr<ExprAST> Body;
+};
+
+/// PrototypeAST - This class represents the "prototype" for a function,
+/// which captures its argument names as well as if it is an operator.
+struct PrototypeAST {
+ PrototypeAST(std::string Name, std::vector<std::string> Args,
+ bool IsOperator = false, unsigned Precedence = 0)
+ : Name(std::move(Name)), Args(std::move(Args)), IsOperator(IsOperator),
+ Precedence(Precedence) {}
+
+ Function *IRGen(IRGenContext &C) const;
+ void CreateArgumentAllocas(Function *F, IRGenContext &C);
+
+ bool isUnaryOp() const { return IsOperator && Args.size() == 1; }
+ bool isBinaryOp() const { return IsOperator && Args.size() == 2; }
+
+ char getOperatorName() const {
+ assert(isUnaryOp() || isBinaryOp());
+ return Name[Name.size()-1];
+ }
+
+ std::string Name;
+ std::vector<std::string> Args;
+ bool IsOperator;
+ unsigned Precedence; // Precedence if a binary op.
+};
+
+/// FunctionAST - This class represents a function definition itself.
+struct FunctionAST {
+ FunctionAST(std::unique_ptr<PrototypeAST> Proto,
+ std::unique_ptr<ExprAST> Body)
+ : Proto(std::move(Proto)), Body(std::move(Body)) {}
+
+ Function *IRGen(IRGenContext &C) const;
+
+ std::unique_ptr<PrototypeAST> Proto;
+ std::unique_ptr<ExprAST> Body;
+};
+
+//===----------------------------------------------------------------------===//
+// Parser
+//===----------------------------------------------------------------------===//
+
+/// CurTok/getNextToken - Provide a simple token buffer. CurTok is the current
+/// token the parser is looking at. getNextToken reads another token from the
+/// lexer and updates CurTok with its results.
+static int CurTok;
+static int getNextToken() {
+ return CurTok = gettok();
+}
+
+/// BinopPrecedence - This holds the precedence for each binary operator that is
+/// defined.
+static std::map<char, int> BinopPrecedence;
+
+/// GetTokPrecedence - Get the precedence of the pending binary operator token.
+static int GetTokPrecedence() {
+ if (!isascii(CurTok))
+ return -1;
+
+ // Make sure it's a declared binop.
+ int TokPrec = BinopPrecedence[CurTok];
+ if (TokPrec <= 0) return -1;
+ return TokPrec;
+}
+
+template <typename T>
+std::unique_ptr<T> ErrorU(const std::string &Str) {
+ std::cerr << "Error: " << Str << "\n";
+ return nullptr;
+}
+
+template <typename T>
+T* ErrorP(const std::string &Str) {
+ std::cerr << "Error: " << Str << "\n";
+ return nullptr;
+}
+
+static std::unique_ptr<ExprAST> ParseExpression();
+
+/// identifierexpr
+/// ::= identifier
+/// ::= identifier '(' expression* ')'
+static std::unique_ptr<ExprAST> ParseIdentifierExpr() {
+ std::string IdName = IdentifierStr;
+
+ getNextToken(); // eat identifier.
+
+ if (CurTok != '(') // Simple variable ref.
+ return llvm::make_unique<VariableExprAST>(IdName);
+
+ // Call.
+ getNextToken(); // eat (
+ std::vector<std::unique_ptr<ExprAST>> Args;
+ if (CurTok != ')') {
+ while (1) {
+ auto Arg = ParseExpression();
+ if (!Arg) return nullptr;
+ Args.push_back(std::move(Arg));
+
+ if (CurTok == ')') break;
+
+ if (CurTok != ',')
+ return ErrorU<CallExprAST>("Expected ')' or ',' in argument list");
+ getNextToken();
+ }
+ }
+
+ // Eat the ')'.
+ getNextToken();
+
+ return llvm::make_unique<CallExprAST>(IdName, std::move(Args));
+}
+
+/// numberexpr ::= number
+static std::unique_ptr<NumberExprAST> ParseNumberExpr() {
+ auto Result = llvm::make_unique<NumberExprAST>(NumVal);
+ getNextToken(); // consume the number
+ return Result;
+}
+
+/// parenexpr ::= '(' expression ')'
+static std::unique_ptr<ExprAST> ParseParenExpr() {
+ getNextToken(); // eat (.
+ auto V = ParseExpression();
+ if (!V)
+ return nullptr;
+
+ if (CurTok != ')')
+ return ErrorU<ExprAST>("expected ')'");
+ getNextToken(); // eat ).
+ return V;
+}
+
+/// ifexpr ::= 'if' expression 'then' expression 'else' expression
+static std::unique_ptr<ExprAST> ParseIfExpr() {
+ getNextToken(); // eat the if.
+
+ // condition.
+ auto Cond = ParseExpression();
+ if (!Cond)
+ return nullptr;
+
+ if (CurTok != tok_then)
+ return ErrorU<ExprAST>("expected then");
+ getNextToken(); // eat the then
+
+ auto Then = ParseExpression();
+ if (!Then)
+ return nullptr;
+
+ if (CurTok != tok_else)
+ return ErrorU<ExprAST>("expected else");
+
+ getNextToken();
+
+ auto Else = ParseExpression();
+ if (!Else)
+ return nullptr;
+
+ return llvm::make_unique<IfExprAST>(std::move(Cond), std::move(Then),
+ std::move(Else));
+}
+
+/// forexpr ::= 'for' identifier '=' expr ',' expr (',' expr)? 'in' expression
+static std::unique_ptr<ForExprAST> ParseForExpr() {
+ getNextToken(); // eat the for.
+
+ if (CurTok != tok_identifier)
+ return ErrorU<ForExprAST>("expected identifier after for");
+
+ std::string IdName = IdentifierStr;
+ getNextToken(); // eat identifier.
+
+ if (CurTok != '=')
+ return ErrorU<ForExprAST>("expected '=' after for");
+ getNextToken(); // eat '='.
+
+
+ auto Start = ParseExpression();
+ if (!Start)
+ return nullptr;
+ if (CurTok != ',')
+ return ErrorU<ForExprAST>("expected ',' after for start value");
+ getNextToken();
+
+ auto End = ParseExpression();
+ if (!End)
+ return nullptr;
+
+ // The step value is optional.
+ std::unique_ptr<ExprAST> Step;
+ if (CurTok == ',') {
+ getNextToken();
+ Step = ParseExpression();
+ if (!Step)
+ return nullptr;
+ }
+
+ if (CurTok != tok_in)
+ return ErrorU<ForExprAST>("expected 'in' after for");
+ getNextToken(); // eat 'in'.
+
+ auto Body = ParseExpression();
+ if (Body)
+ return nullptr;
+
+ return llvm::make_unique<ForExprAST>(IdName, std::move(Start), std::move(End),
+ std::move(Step), std::move(Body));
+}
+
+/// varexpr ::= 'var' identifier ('=' expression)?
+// (',' identifier ('=' expression)?)* 'in' expression
+static std::unique_ptr<VarExprAST> ParseVarExpr() {
+ getNextToken(); // eat the var.
+
+ VarExprAST::BindingList VarBindings;
+
+ // At least one variable name is required.
+ if (CurTok != tok_identifier)
+ return ErrorU<VarExprAST>("expected identifier after var");
+
+ while (1) {
+ std::string Name = IdentifierStr;
+ getNextToken(); // eat identifier.
+
+ // Read the optional initializer.
+ std::unique_ptr<ExprAST> Init;
+ if (CurTok == '=') {
+ getNextToken(); // eat the '='.
+
+ Init = ParseExpression();
+ if (!Init)
+ return nullptr;
+ }
+
+ VarBindings.push_back(VarExprAST::Binding(Name, std::move(Init)));
+
+ // End of var list, exit loop.
+ if (CurTok != ',') break;
+ getNextToken(); // eat the ','.
+
+ if (CurTok != tok_identifier)
+ return ErrorU<VarExprAST>("expected identifier list after var");
+ }
+
+ // At this point, we have to have 'in'.
+ if (CurTok != tok_in)
+ return ErrorU<VarExprAST>("expected 'in' keyword after 'var'");
+ getNextToken(); // eat 'in'.
+
+ auto Body = ParseExpression();
+ if (!Body)
+ return nullptr;
+
+ return llvm::make_unique<VarExprAST>(std::move(VarBindings), std::move(Body));
+}
+
+/// primary
+/// ::= identifierexpr
+/// ::= numberexpr
+/// ::= parenexpr
+/// ::= ifexpr
+/// ::= forexpr
+/// ::= varexpr
+static std::unique_ptr<ExprAST> ParsePrimary() {
+ switch (CurTok) {
+ default: return ErrorU<ExprAST>("unknown token when expecting an expression");
+ case tok_identifier: return ParseIdentifierExpr();
+ case tok_number: return ParseNumberExpr();
+ case '(': return ParseParenExpr();
+ case tok_if: return ParseIfExpr();
+ case tok_for: return ParseForExpr();
+ case tok_var: return ParseVarExpr();
+ }
+}
+
+/// unary
+/// ::= primary
+/// ::= '!' unary
+static std::unique_ptr<ExprAST> ParseUnary() {
+ // If the current token is not an operator, it must be a primary expr.
+ if (!isascii(CurTok) || CurTok == '(' || CurTok == ',')
+ return ParsePrimary();
+
+ // If this is a unary operator, read it.
+ int Opc = CurTok;
+ getNextToken();
+ if (auto Operand = ParseUnary())
+ return llvm::make_unique<UnaryExprAST>(Opc, std::move(Operand));
+ return nullptr;
+}
+
+/// binoprhs
+/// ::= ('+' unary)*
+static std::unique_ptr<ExprAST> ParseBinOpRHS(int ExprPrec,
+ std::unique_ptr<ExprAST> LHS) {
+ // If this is a binop, find its precedence.
+ while (1) {
+ int TokPrec = GetTokPrecedence();
+
+ // If this is a binop that binds at least as tightly as the current binop,
+ // consume it, otherwise we are done.
+ if (TokPrec < ExprPrec)
+ return LHS;
+
+ // Okay, we know this is a binop.
+ int BinOp = CurTok;
+ getNextToken(); // eat binop
+
+ // Parse the unary expression after the binary operator.
+ auto RHS = ParseUnary();
+ if (!RHS)
+ return nullptr;
+
+ // If BinOp binds less tightly with RHS than the operator after RHS, let
+ // the pending operator take RHS as its LHS.
+ int NextPrec = GetTokPrecedence();
+ if (TokPrec < NextPrec) {
+ RHS = ParseBinOpRHS(TokPrec+1, std::move(RHS));
+ if (!RHS)
+ return nullptr;
+ }
+
+ // Merge LHS/RHS.
+ LHS = llvm::make_unique<BinaryExprAST>(BinOp, std::move(LHS), std::move(RHS));
+ }
+}
+
+/// expression
+/// ::= unary binoprhs
+///
+static std::unique_ptr<ExprAST> ParseExpression() {
+ auto LHS = ParseUnary();
+ if (!LHS)
+ return nullptr;
+
+ return ParseBinOpRHS(0, std::move(LHS));
+}
+
+/// prototype
+/// ::= id '(' id* ')'
+/// ::= binary LETTER number? (id, id)
+/// ::= unary LETTER (id)
+static std::unique_ptr<PrototypeAST> ParsePrototype() {
+ std::string FnName;
+
+ unsigned Kind = 0; // 0 = identifier, 1 = unary, 2 = binary.
+ unsigned BinaryPrecedence = 30;
+
+ switch (CurTok) {
+ default:
+ return ErrorU<PrototypeAST>("Expected function name in prototype");
+ case tok_identifier:
+ FnName = IdentifierStr;
+ Kind = 0;
+ getNextToken();
+ break;
+ case tok_unary:
+ getNextToken();
+ if (!isascii(CurTok))
+ return ErrorU<PrototypeAST>("Expected unary operator");
+ FnName = "unary";
+ FnName += (char)CurTok;
+ Kind = 1;
+ getNextToken();
+ break;
+ case tok_binary:
+ getNextToken();
+ if (!isascii(CurTok))
+ return ErrorU<PrototypeAST>("Expected binary operator");
+ FnName = "binary";
+ FnName += (char)CurTok;
+ Kind = 2;
+ getNextToken();
+
+ // Read the precedence if present.
+ if (CurTok == tok_number) {
+ if (NumVal < 1 || NumVal > 100)
+ return ErrorU<PrototypeAST>("Invalid precedecnce: must be 1..100");
+ BinaryPrecedence = (unsigned)NumVal;
+ getNextToken();
+ }
+ break;
+ }
+
+ if (CurTok != '(')
+ return ErrorU<PrototypeAST>("Expected '(' in prototype");
+
+ std::vector<std::string> ArgNames;
+ while (getNextToken() == tok_identifier)
+ ArgNames.push_back(IdentifierStr);
+ if (CurTok != ')')
+ return ErrorU<PrototypeAST>("Expected ')' in prototype");
+
+ // success.
+ getNextToken(); // eat ')'.
+
+ // Verify right number of names for operator.
+ if (Kind && ArgNames.size() != Kind)
+ return ErrorU<PrototypeAST>("Invalid number of operands for operator");
+
+ return llvm::make_unique<PrototypeAST>(FnName, std::move(ArgNames), Kind != 0,
+ BinaryPrecedence);
+}
+
+/// definition ::= 'def' prototype expression
+static std::unique_ptr<FunctionAST> ParseDefinition() {
+ getNextToken(); // eat def.
+ auto Proto = ParsePrototype();
+ if (!Proto)
+ return nullptr;
+
+ if (auto Body = ParseExpression())
+ return llvm::make_unique<FunctionAST>(std::move(Proto), std::move(Body));
+ return nullptr;
+}
+
+/// toplevelexpr ::= expression
+static std::unique_ptr<FunctionAST> ParseTopLevelExpr() {
+ if (auto E = ParseExpression()) {
+ // Make an anonymous proto.
+ auto Proto =
+ llvm::make_unique<PrototypeAST>("__anon_expr", std::vector<std::string>());
+ return llvm::make_unique<FunctionAST>(std::move(Proto), std::move(E));
+ }
+ return nullptr;
+}
+
+/// external ::= 'extern' prototype
+static std::unique_ptr<PrototypeAST> ParseExtern() {
+ getNextToken(); // eat extern.
+ return ParsePrototype();
+}
+
+//===----------------------------------------------------------------------===//
+// Code Generation
+//===----------------------------------------------------------------------===//
+
+// FIXME: Obviously we can do better than this
+std::string GenerateUniqueName(const std::string &Root) {
+ static int i = 0;
+ std::ostringstream NameStream;
+ NameStream << Root << ++i;
+ return NameStream.str();
+}
+
+std::string MakeLegalFunctionName(std::string Name)
+{
+ std::string NewName;
+ assert(!Name.empty() && "Base name must not be empty");
+
+ // Start with what we have
+ NewName = Name;
+
+ // Look for a numberic first character
+ if (NewName.find_first_of("0123456789") == 0) {
+ NewName.insert(0, 1, 'n');
+ }
+
+ // Replace illegal characters with their ASCII equivalent
+ std::string legal_elements = "_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+ size_t pos;
+ while ((pos = NewName.find_first_not_of(legal_elements)) != std::string::npos) {
+ std::ostringstream NumStream;
+ NumStream << (int)NewName.at(pos);
+ NewName = NewName.replace(pos, 1, NumStream.str());
+ }
+
+ return NewName;
+}
+
+class SessionContext {
+public:
+ SessionContext(LLVMContext &C)
+ : Context(C), TM(EngineBuilder().selectTarget()) {}
+ LLVMContext& getLLVMContext() const { return Context; }
+ TargetMachine& getTarget() { return *TM; }
+ void addPrototypeAST(std::unique_ptr<PrototypeAST> P);
+ PrototypeAST* getPrototypeAST(const std::string &Name);
+private:
+ typedef std::map<std::string, std::unique_ptr<PrototypeAST>> PrototypeMap;
+
+ LLVMContext &Context;
+ std::unique_ptr<TargetMachine> TM;
+
+ PrototypeMap Prototypes;
+};
+
+void SessionContext::addPrototypeAST(std::unique_ptr<PrototypeAST> P) {
+ Prototypes[P->Name] = std::move(P);
+}
+
+PrototypeAST* SessionContext::getPrototypeAST(const std::string &Name) {
+ PrototypeMap::iterator I = Prototypes.find(Name);
+ if (I != Prototypes.end())
+ return I->second.get();
+ return nullptr;
+}
+
+class IRGenContext {
+public:
+
+ IRGenContext(SessionContext &S)
+ : Session(S),
+ M(new Module(GenerateUniqueName("jit_module_"),
+ Session.getLLVMContext())),
+ Builder(Session.getLLVMContext()) {
+ M->setDataLayout(Session.getTarget().getDataLayout());
+ }
+
+ SessionContext& getSession() { return Session; }
+ Module& getM() const { return *M; }
+ std::unique_ptr<Module> takeM() { return std::move(M); }
+ IRBuilder<>& getBuilder() { return Builder; }
+ LLVMContext& getLLVMContext() { return Session.getLLVMContext(); }
+ Function* getPrototype(const std::string &Name);
+
+ std::map<std::string, AllocaInst*> NamedValues;
+private:
+ SessionContext &Session;
+ std::unique_ptr<Module> M;
+ IRBuilder<> Builder;
+};
+
+Function* IRGenContext::getPrototype(const std::string &Name) {
+ if (Function *ExistingProto = M->getFunction(Name))
+ return ExistingProto;
+ if (PrototypeAST *ProtoAST = Session.getPrototypeAST(Name))
+ return ProtoAST->IRGen(*this);
+ return nullptr;
+}
+
+/// CreateEntryBlockAlloca - Create an alloca instruction in the entry block of
+/// the function. This is used for mutable variables etc.
+static AllocaInst *CreateEntryBlockAlloca(Function *TheFunction,
+ const std::string &VarName) {
+ IRBuilder<> TmpB(&TheFunction->getEntryBlock(),
+ TheFunction->getEntryBlock().begin());
+ return TmpB.CreateAlloca(Type::getDoubleTy(getGlobalContext()), 0,
+ VarName.c_str());
+}
+
+Value *NumberExprAST::IRGen(IRGenContext &C) const {
+ return ConstantFP::get(C.getLLVMContext(), APFloat(Val));
+}
+
+Value *VariableExprAST::IRGen(IRGenContext &C) const {
+ // Look this variable up in the function.
+ Value *V = C.NamedValues[Name];
+
+ if (V == 0)
+ return ErrorP<Value>("Unknown variable name '" + Name + "'");
+
+ // Load the value.
+ return C.getBuilder().CreateLoad(V, Name.c_str());
+}
+
+Value *UnaryExprAST::IRGen(IRGenContext &C) const {
+ if (Value *OperandV = Operand->IRGen(C)) {
+ std::string FnName = MakeLegalFunctionName(std::string("unary")+Opcode);
+ if (Function *F = C.getPrototype(FnName))
+ return C.getBuilder().CreateCall(F, OperandV, "unop");
+ return ErrorP<Value>("Unknown unary operator");
+ }
+
+ // Could not codegen operand - return null.
+ return nullptr;
+}
+
+Value *BinaryExprAST::IRGen(IRGenContext &C) const {
+ // Special case '=' because we don't want to emit the LHS as an expression.
+ if (Op == '=') {
+ // Assignment requires the LHS to be an identifier.
+ auto LHSVar = static_cast<VariableExprAST&>(*LHS);
+ // Codegen the RHS.
+ Value *Val = RHS->IRGen(C);
+ if (!Val) return nullptr;
+
+ // Look up the name.
+ if (auto Variable = C.NamedValues[LHSVar.Name]) {
+ C.getBuilder().CreateStore(Val, Variable);
+ return Val;
+ }
+ return ErrorP<Value>("Unknown variable name");
+ }
+
+ Value *L = LHS->IRGen(C);
+ Value *R = RHS->IRGen(C);
+ if (!L || !R) return nullptr;
+
+ switch (Op) {
+ case '+': return C.getBuilder().CreateFAdd(L, R, "addtmp");
+ case '-': return C.getBuilder().CreateFSub(L, R, "subtmp");
+ case '*': return C.getBuilder().CreateFMul(L, R, "multmp");
+ case '/': return C.getBuilder().CreateFDiv(L, R, "divtmp");
+ case '<':
+ L = C.getBuilder().CreateFCmpULT(L, R, "cmptmp");
+ // Convert bool 0/1 to double 0.0 or 1.0
+ return C.getBuilder().CreateUIToFP(L, Type::getDoubleTy(getGlobalContext()),
+ "booltmp");
+ default: break;
+ }
+
+ // If it wasn't a builtin binary operator, it must be a user defined one. Emit
+ // a call to it.
+ std::string FnName = MakeLegalFunctionName(std::string("binary")+Op);
+ if (Function *F = C.getPrototype(FnName)) {
+ Value *Ops[] = { L, R };
+ return C.getBuilder().CreateCall(F, Ops, "binop");
+ }
+
+ return ErrorP<Value>("Unknown binary operator");
+}
+
+Value *CallExprAST::IRGen(IRGenContext &C) const {
+ // Look up the name in the global module table.
+ if (auto CalleeF = C.getPrototype(CalleeName)) {
+ // If argument mismatch error.
+ if (CalleeF->arg_size() != Args.size())
+ return ErrorP<Value>("Incorrect # arguments passed");
+
+ std::vector<Value*> ArgsV;
+ for (unsigned i = 0, e = Args.size(); i != e; ++i) {
+ ArgsV.push_back(Args[i]->IRGen(C));
+ if (!ArgsV.back()) return nullptr;
+ }
+
+ return C.getBuilder().CreateCall(CalleeF, ArgsV, "calltmp");
+ }
+
+ return ErrorP<Value>("Unknown function referenced");
+}
+
+Value *IfExprAST::IRGen(IRGenContext &C) const {
+ Value *CondV = Cond->IRGen(C);
+ if (!CondV) return nullptr;
+
+ // Convert condition to a bool by comparing equal to 0.0.
+ ConstantFP *FPZero =
+ ConstantFP::get(C.getLLVMContext(), APFloat(0.0));
+ CondV = C.getBuilder().CreateFCmpONE(CondV, FPZero, "ifcond");
+
+ Function *TheFunction = C.getBuilder().GetInsertBlock()->getParent();
+
+ // Create blocks for the then and else cases. Insert the 'then' block at the
+ // end of the function.
+ BasicBlock *ThenBB = BasicBlock::Create(C.getLLVMContext(), "then", TheFunction);
+ BasicBlock *ElseBB = BasicBlock::Create(C.getLLVMContext(), "else");
+ BasicBlock *MergeBB = BasicBlock::Create(C.getLLVMContext(), "ifcont");
+
+ C.getBuilder().CreateCondBr(CondV, ThenBB, ElseBB);
+
+ // Emit then value.
+ C.getBuilder().SetInsertPoint(ThenBB);
+
+ Value *ThenV = Then->IRGen(C);
+ if (!ThenV) return nullptr;
+
+ C.getBuilder().CreateBr(MergeBB);
+ // Codegen of 'Then' can change the current block, update ThenBB for the PHI.
+ ThenBB = C.getBuilder().GetInsertBlock();
+
+ // Emit else block.
+ TheFunction->getBasicBlockList().push_back(ElseBB);
+ C.getBuilder().SetInsertPoint(ElseBB);
+
+ Value *ElseV = Else->IRGen(C);
+ if (!ElseV) return nullptr;
+
+ C.getBuilder().CreateBr(MergeBB);
+ // Codegen of 'Else' can change the current block, update ElseBB for the PHI.
+ ElseBB = C.getBuilder().GetInsertBlock();
+
+ // Emit merge block.
+ TheFunction->getBasicBlockList().push_back(MergeBB);
+ C.getBuilder().SetInsertPoint(MergeBB);
+ PHINode *PN = C.getBuilder().CreatePHI(Type::getDoubleTy(getGlobalContext()), 2,
+ "iftmp");
+
+ PN->addIncoming(ThenV, ThenBB);
+ PN->addIncoming(ElseV, ElseBB);
+ return PN;
+}
+
+Value *ForExprAST::IRGen(IRGenContext &C) const {
+ // Output this as:
+ // var = alloca double
+ // ...
+ // start = startexpr
+ // store start -> var
+ // goto loop
+ // loop:
+ // ...
+ // bodyexpr
+ // ...
+ // loopend:
+ // step = stepexpr
+ // endcond = endexpr
+ //
+ // curvar = load var
+ // nextvar = curvar + step
+ // store nextvar -> var
+ // br endcond, loop, endloop
+ // outloop:
+
+ Function *TheFunction = C.getBuilder().GetInsertBlock()->getParent();
+
+ // Create an alloca for the variable in the entry block.
+ AllocaInst *Alloca = CreateEntryBlockAlloca(TheFunction, VarName);
+
+ // Emit the start code first, without 'variable' in scope.
+ Value *StartVal = Start->IRGen(C);
+ if (!StartVal) return nullptr;
+
+ // Store the value into the alloca.
+ C.getBuilder().CreateStore(StartVal, Alloca);
+
+ // Make the new basic block for the loop header, inserting after current
+ // block.
+ BasicBlock *LoopBB = BasicBlock::Create(getGlobalContext(), "loop", TheFunction);
+
+ // Insert an explicit fall through from the current block to the LoopBB.
+ C.getBuilder().CreateBr(LoopBB);
+
+ // Start insertion in LoopBB.
+ C.getBuilder().SetInsertPoint(LoopBB);
+
+ // Within the loop, the variable is defined equal to the PHI node. If it
+ // shadows an existing variable, we have to restore it, so save it now.
+ AllocaInst *OldVal = C.NamedValues[VarName];
+ C.NamedValues[VarName] = Alloca;
+
+ // Emit the body of the loop. This, like any other expr, can change the
+ // current BB. Note that we ignore the value computed by the body, but don't
+ // allow an error.
+ if (!Body->IRGen(C))
+ return nullptr;
+
+ // Emit the step value.
+ Value *StepVal;
+ if (Step) {
+ StepVal = Step->IRGen(C);
+ if (!StepVal) return nullptr;
+ } else {
+ // If not specified, use 1.0.
+ StepVal = ConstantFP::get(getGlobalContext(), APFloat(1.0));
+ }
+
+ // Compute the end condition.
+ Value *EndCond = End->IRGen(C);
+ if (EndCond == 0) return EndCond;
+
+ // Reload, increment, and restore the alloca. This handles the case where
+ // the body of the loop mutates the variable.
+ Value *CurVar = C.getBuilder().CreateLoad(Alloca, VarName.c_str());
+ Value *NextVar = C.getBuilder().CreateFAdd(CurVar, StepVal, "nextvar");
+ C.getBuilder().CreateStore(NextVar, Alloca);
+
+ // Convert condition to a bool by comparing equal to 0.0.
+ EndCond = C.getBuilder().CreateFCmpONE(EndCond,
+ ConstantFP::get(getGlobalContext(), APFloat(0.0)),
+ "loopcond");
+
+ // Create the "after loop" block and insert it.
+ BasicBlock *AfterBB = BasicBlock::Create(getGlobalContext(), "afterloop", TheFunction);
+
+ // Insert the conditional branch into the end of LoopEndBB.
+ C.getBuilder().CreateCondBr(EndCond, LoopBB, AfterBB);
+
+ // Any new code will be inserted in AfterBB.
+ C.getBuilder().SetInsertPoint(AfterBB);
+
+ // Restore the unshadowed variable.
+ if (OldVal)
+ C.NamedValues[VarName] = OldVal;
+ else
+ C.NamedValues.erase(VarName);
+
+
+ // for expr always returns 0.0.
+ return Constant::getNullValue(Type::getDoubleTy(getGlobalContext()));
+}
+
+Value *VarExprAST::IRGen(IRGenContext &C) const {
+ std::vector<AllocaInst *> OldBindings;
+
+ Function *TheFunction = C.getBuilder().GetInsertBlock()->getParent();
+
+ // Register all variables and emit their initializer.
+ for (unsigned i = 0, e = VarBindings.size(); i != e; ++i) {
+ auto &VarName = VarBindings[i].first;
+ auto &Init = VarBindings[i].second;
+
+ // Emit the initializer before adding the variable to scope, this prevents
+ // the initializer from referencing the variable itself, and permits stuff
+ // like this:
+ // var a = 1 in
+ // var a = a in ... # refers to outer 'a'.
+ Value *InitVal;
+ if (Init) {
+ InitVal = Init->IRGen(C);
+ if (!InitVal) return nullptr;
+ } else // If not specified, use 0.0.
+ InitVal = ConstantFP::get(getGlobalContext(), APFloat(0.0));
+
+ AllocaInst *Alloca = CreateEntryBlockAlloca(TheFunction, VarName);
+ C.getBuilder().CreateStore(InitVal, Alloca);
+
+ // Remember the old variable binding so that we can restore the binding when
+ // we unrecurse.
+ OldBindings.push_back(C.NamedValues[VarName]);
+
+ // Remember this binding.
+ C.NamedValues[VarName] = Alloca;
+ }
+
+ // Codegen the body, now that all vars are in scope.
+ Value *BodyVal = Body->IRGen(C);
+ if (!BodyVal) return nullptr;
+
+ // Pop all our variables from scope.
+ for (unsigned i = 0, e = VarBindings.size(); i != e; ++i)
+ C.NamedValues[VarBindings[i].first] = OldBindings[i];
+
+ // Return the body computation.
+ return BodyVal;
+}
+
+Function *PrototypeAST::IRGen(IRGenContext &C) const {
+ std::string FnName = MakeLegalFunctionName(Name);
+
+ // Make the function type: double(double,double) etc.
+ std::vector<Type*> Doubles(Args.size(),
+ Type::getDoubleTy(getGlobalContext()));
+ FunctionType *FT = FunctionType::get(Type::getDoubleTy(getGlobalContext()),
+ Doubles, false);
+ Function *F = Function::Create(FT, Function::ExternalLinkage, FnName,
+ &C.getM());
+
+ // If F conflicted, there was already something named 'FnName'. If it has a
+ // body, don't allow redefinition or reextern.
+ if (F->getName() != FnName) {
+ // Delete the one we just made and get the existing one.
+ F->eraseFromParent();
+ F = C.getM().getFunction(Name);
+
+ // If F already has a body, reject this.
+ if (!F->empty()) {
+ ErrorP<Function>("redefinition of function");
+ return nullptr;
+ }
+
+ // If F took a different number of args, reject.
+ if (F->arg_size() != Args.size()) {
+ ErrorP<Function>("redefinition of function with different # args");
+ return nullptr;
+ }
+ }
+
+ // Set names for all arguments.
+ unsigned Idx = 0;
+ for (Function::arg_iterator AI = F->arg_begin(); Idx != Args.size();
+ ++AI, ++Idx)
+ AI->setName(Args[Idx]);
+
+ return F;
+}
+
+/// CreateArgumentAllocas - Create an alloca for each argument and register the
+/// argument in the symbol table so that references to it will succeed.
+void PrototypeAST::CreateArgumentAllocas(Function *F, IRGenContext &C) {
+ Function::arg_iterator AI = F->arg_begin();
+ for (unsigned Idx = 0, e = Args.size(); Idx != e; ++Idx, ++AI) {
+ // Create an alloca for this variable.
+ AllocaInst *Alloca = CreateEntryBlockAlloca(F, Args[Idx]);
+
+ // Store the initial value into the alloca.
+ C.getBuilder().CreateStore(AI, Alloca);
+
+ // Add arguments to variable symbol table.
+ C.NamedValues[Args[Idx]] = Alloca;
+ }
+}
+
+Function *FunctionAST::IRGen(IRGenContext &C) const {
+ C.NamedValues.clear();
+
+ Function *TheFunction = Proto->IRGen(C);
+ if (!TheFunction)
+ return nullptr;
+
+ // If this is an operator, install it.
+ if (Proto->isBinaryOp())
+ BinopPrecedence[Proto->getOperatorName()] = Proto->Precedence;
+
+ // Create a new basic block to start insertion into.
+ BasicBlock *BB = BasicBlock::Create(getGlobalContext(), "entry", TheFunction);
+ C.getBuilder().SetInsertPoint(BB);
+
+ // Add all arguments to the symbol table and create their allocas.
+ Proto->CreateArgumentAllocas(TheFunction, C);
+
+ if (Value *RetVal = Body->IRGen(C)) {
+ // Finish off the function.
+ C.getBuilder().CreateRet(RetVal);
+
+ // Validate the generated code, checking for consistency.
+ verifyFunction(*TheFunction);
+
+ return TheFunction;
+ }
+
+ // Error reading body, remove function.
+ TheFunction->eraseFromParent();
+
+ if (Proto->isBinaryOp())
+ BinopPrecedence.erase(Proto->getOperatorName());
+ return nullptr;
+}
+
+//===----------------------------------------------------------------------===//
+// Top-Level parsing and JIT Driver
+//===----------------------------------------------------------------------===//
+
+static std::unique_ptr<llvm::Module> IRGen(SessionContext &S,
+ const FunctionAST &F) {
+ IRGenContext C(S);
+ auto LF = F.IRGen(C);
+ if (!LF)
+ return nullptr;
+#ifndef MINIMAL_STDERR_OUTPUT
+ fprintf(stderr, "Read function definition:");
+ LF->dump();
+#endif
+ return C.takeM();
+}
+
+template <typename T>
+static std::vector<T> singletonSet(T t) {
+ std::vector<T> Vec;
+ Vec.push_back(std::move(t));
+ return Vec;
+}
+
+class KaleidoscopeJIT {
+public:
+ typedef ObjectLinkingLayer<> ObjLayerT;
+ typedef IRCompileLayer<ObjLayerT> CompileLayerT;
+ typedef CompileLayerT::ModuleSetHandleT ModuleHandleT;
+
+ KaleidoscopeJIT(SessionContext &Session)
+ : Mang(Session.getTarget().getDataLayout()),
+ CompileLayer(ObjectLayer, SimpleCompiler(Session.getTarget())) {}
+
+ std::string mangle(const std::string &Name) {
+ std::string MangledName;
+ {
+ raw_string_ostream MangledNameStream(MangledName);
+ Mang.getNameWithPrefix(MangledNameStream, Name);
+ }
+ return MangledName;
+ }
+
+ ModuleHandleT addModule(std::unique_ptr<Module> M) {
+ // We need a memory manager to allocate memory and resolve symbols for this
+ // new module. Create one that resolves symbols by looking back into the
+ // JIT.
+ auto MM = createLookasideRTDyldMM<SectionMemoryManager>(
+ [&](const std::string &Name) {
+ return findSymbol(Name).getAddress();
+ },
+ [](const std::string &S) { return 0; } );
+
+ return CompileLayer.addModuleSet(singletonSet(std::move(M)), std::move(MM));
+ }
+
+ void removeModule(ModuleHandleT H) { CompileLayer.removeModuleSet(H); }
+
+ JITSymbol findSymbol(const std::string &Name) {
+ return CompileLayer.findSymbol(Name, true);
+ }
+
+ JITSymbol findUnmangledSymbol(const std::string Name) {
+ return findSymbol(mangle(Name));
+ }
+
+private:
+
+ Mangler Mang;
+ ObjLayerT ObjectLayer;
+ CompileLayerT CompileLayer;
+};
+
+static void HandleDefinition(SessionContext &S, KaleidoscopeJIT &J) {
+ if (auto F = ParseDefinition()) {
+ if (auto M = IRGen(S, *F)) {
+ S.addPrototypeAST(llvm::make_unique<PrototypeAST>(*F->Proto));
+ J.addModule(std::move(M));
+ }
+ } else {
+ // Skip token for error recovery.
+ getNextToken();
+ }
+}
+
+static void HandleExtern(SessionContext &S) {
+ if (auto P = ParseExtern())
+ S.addPrototypeAST(std::move(P));
+ else {
+ // Skip token for error recovery.
+ getNextToken();
+ }
+}
+
+static void HandleTopLevelExpression(SessionContext &S, KaleidoscopeJIT &J) {
+ // Evaluate a top-level expression into an anonymous function.
+ if (auto F = ParseTopLevelExpr()) {
+ IRGenContext C(S);
+ if (auto ExprFunc = F->IRGen(C)) {
+#ifndef MINIMAL_STDERR_OUTPUT
+ std::cerr << "Expression function:\n";
+ ExprFunc->dump();
+#endif
+ // Add the CodeGen'd module to the JIT. Keep a handle to it: We can remove
+ // this module as soon as we've executed Function ExprFunc.
+ auto H = J.addModule(C.takeM());
+
+ // Get the address of the JIT'd function in memory.
+ auto ExprSymbol = J.findUnmangledSymbol("__anon_expr");
+
+ // Cast it to the right type (takes no arguments, returns a double) so we
+ // can call it as a native function.
+ double (*FP)() = (double (*)())(intptr_t)ExprSymbol.getAddress();
+#ifdef MINIMAL_STDERR_OUTPUT
+ FP();
+#else
+ std::cerr << "Evaluated to " << FP() << "\n";
+#endif
+
+ // Remove the function.
+ J.removeModule(H);
+ }
+ } else {
+ // Skip token for error recovery.
+ getNextToken();
+ }
+}
+
+/// top ::= definition | external | expression | ';'
+static void MainLoop() {
+ SessionContext S(getGlobalContext());
+ KaleidoscopeJIT J(S);
+
+ while (1) {
+ switch (CurTok) {
+ case tok_eof: return;
+ case ';': getNextToken(); continue; // ignore top-level semicolons.
+ case tok_def: HandleDefinition(S, J); break;
+ case tok_extern: HandleExtern(S); break;
+ default: HandleTopLevelExpression(S, J); break;
+ }
+#ifndef MINIMAL_STDERR_OUTPUT
+ std::cerr << "ready> ";
+#endif
+ }
+}
+
+//===----------------------------------------------------------------------===//
+// "Library" functions that can be "extern'd" from user code.
+//===----------------------------------------------------------------------===//
+
+/// putchard - putchar that takes a double and returns 0.
+extern "C"
+double putchard(double X) {
+ putchar((char)X);
+ return 0;
+}
+
+/// printd - printf that takes a double prints it as "%f\n", returning 0.
+extern "C"
+double printd(double X) {
+ printf("%f", X);
+ return 0;
+}
+
+extern "C"
+double printlf() {
+ printf("\n");
+ return 0;
+}
+
+//===----------------------------------------------------------------------===//
+// Main driver code.
+//===----------------------------------------------------------------------===//
+
+int main() {
+ InitializeNativeTarget();
+ InitializeNativeTargetAsmPrinter();
+ InitializeNativeTargetAsmParser();
+
+ // Install standard binary operators.
+ // 1 is lowest precedence.
+ BinopPrecedence['='] = 2;
+ BinopPrecedence['<'] = 10;
+ BinopPrecedence['+'] = 20;
+ BinopPrecedence['-'] = 20;
+ BinopPrecedence['/'] = 40;
+ BinopPrecedence['*'] = 40; // highest.
+
+ // Prime the first token.
+#ifndef MINIMAL_STDERR_OUTPUT
+ std::cerr << "ready> ";
+#endif
+ getNextToken();
+
+ std::cerr << std::fixed;
+
+ // Run the main "interpreter loop" now.
+ MainLoop();
+
+ return 0;
+}
+
diff --git a/examples/Kaleidoscope/Orc/lazy_codegen/CMakeLists.txt b/examples/Kaleidoscope/Orc/lazy_codegen/CMakeLists.txt
new file mode 100644
index 0000000..faad342
--- /dev/null
+++ b/examples/Kaleidoscope/Orc/lazy_codegen/CMakeLists.txt
@@ -0,0 +1,12 @@
+set(LLVM_LINK_COMPONENTS
+ Core
+ ExecutionEngine
+ Object
+ RuntimeDyld
+ Support
+ native
+ )
+
+add_kaleidoscope_chapter(Kaleidoscope-Orc-lazy_codegen
+ toy.cpp
+ )
diff --git a/examples/Kaleidoscope/Orc/lazy_codegen/Makefile b/examples/Kaleidoscope/Orc/lazy_codegen/Makefile
new file mode 100644
index 0000000..5536314
--- /dev/null
+++ b/examples/Kaleidoscope/Orc/lazy_codegen/Makefile
@@ -0,0 +1,17 @@
+UNAME := $(shell uname -s)
+
+ifeq ($(UNAME),Darwin)
+ CXX := xcrun --sdk macosx clang++
+else
+ CXX := clang++
+endif
+
+LLVM_CXXFLAGS := $(shell llvm-config --cxxflags)
+LLVM_LDFLAGS := $(shell llvm-config --ldflags --system-libs --libs core orcjit native)
+
+toy: toy.cpp
+ $(CXX) $(LLVM_CXXFLAGS) -Wall -std=c++11 -g -O0 -rdynamic -fno-rtti -o toy toy.cpp $(LLVM_LDFLAGS)
+
+.PHONY: clean
+clean:
+ rm -f toy
diff --git a/examples/Kaleidoscope/Orc/lazy_codegen/README.txt b/examples/Kaleidoscope/Orc/lazy_codegen/README.txt
new file mode 100644
index 0000000..9d62a91
--- /dev/null
+++ b/examples/Kaleidoscope/Orc/lazy_codegen/README.txt
@@ -0,0 +1,13 @@
+//===----------------------------------------------------------------------===/
+// Kaleidoscope with Orc - Initial Version
+//===----------------------------------------------------------------------===//
+
+This version of Kaleidoscope with Orc demonstrates lazy code-generation.
+Unlike the first Kaleidoscope-Orc tutorial, where code-gen was performed as soon
+as modules were added to the JIT, this tutorial adds a LazyEmittingLayer to defer
+code-generation until modules are actually referenced. All IR-generation is still
+performed up-front.
+
+This directory contain a Makefile that allow the code to be built in a
+standalone manner, independent of the larger LLVM build infrastructure. To build
+the program you will need to have 'clang++' and 'llvm-config' in your path.
diff --git a/examples/Kaleidoscope/Orc/lazy_codegen/toy.cpp b/examples/Kaleidoscope/Orc/lazy_codegen/toy.cpp
new file mode 100644
index 0000000..1ed267d
--- /dev/null
+++ b/examples/Kaleidoscope/Orc/lazy_codegen/toy.cpp
@@ -0,0 +1,1338 @@
+#include "llvm/Analysis/Passes.h"
+#include "llvm/ExecutionEngine/Orc/CompileUtils.h"
+#include "llvm/ExecutionEngine/Orc/IRCompileLayer.h"
+#include "llvm/ExecutionEngine/Orc/LazyEmittingLayer.h"
+#include "llvm/ExecutionEngine/Orc/ObjectLinkingLayer.h"
+#include "llvm/IR/DataLayout.h"
+#include "llvm/IR/DerivedTypes.h"
+#include "llvm/IR/IRBuilder.h"
+#include "llvm/IR/LegacyPassManager.h"
+#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/Module.h"
+#include "llvm/IR/Verifier.h"
+#include "llvm/Support/TargetSelect.h"
+#include "llvm/Transforms/Scalar.h"
+#include <cctype>
+#include <iomanip>
+#include <iostream>
+#include <map>
+#include <sstream>
+#include <string>
+#include <vector>
+
+using namespace llvm;
+using namespace llvm::orc;
+
+//===----------------------------------------------------------------------===//
+// Lexer
+//===----------------------------------------------------------------------===//
+
+// The lexer returns tokens [0-255] if it is an unknown character, otherwise one
+// of these for known things.
+enum Token {
+ tok_eof = -1,
+
+ // commands
+ tok_def = -2, tok_extern = -3,
+
+ // primary
+ tok_identifier = -4, tok_number = -5,
+
+ // control
+ tok_if = -6, tok_then = -7, tok_else = -8,
+ tok_for = -9, tok_in = -10,
+
+ // operators
+ tok_binary = -11, tok_unary = -12,
+
+ // var definition
+ tok_var = -13
+};
+
+static std::string IdentifierStr; // Filled in if tok_identifier
+static double NumVal; // Filled in if tok_number
+
+/// gettok - Return the next token from standard input.
+static int gettok() {
+ static int LastChar = ' ';
+
+ // Skip any whitespace.
+ while (isspace(LastChar))
+ LastChar = getchar();
+
+ if (isalpha(LastChar)) { // identifier: [a-zA-Z][a-zA-Z0-9]*
+ IdentifierStr = LastChar;
+ while (isalnum((LastChar = getchar())))
+ IdentifierStr += LastChar;
+
+ if (IdentifierStr == "def") return tok_def;
+ if (IdentifierStr == "extern") return tok_extern;
+ if (IdentifierStr == "if") return tok_if;
+ if (IdentifierStr == "then") return tok_then;
+ if (IdentifierStr == "else") return tok_else;
+ if (IdentifierStr == "for") return tok_for;
+ if (IdentifierStr == "in") return tok_in;
+ if (IdentifierStr == "binary") return tok_binary;
+ if (IdentifierStr == "unary") return tok_unary;
+ if (IdentifierStr == "var") return tok_var;
+ return tok_identifier;
+ }
+
+ if (isdigit(LastChar) || LastChar == '.') { // Number: [0-9.]+
+ std::string NumStr;
+ do {
+ NumStr += LastChar;
+ LastChar = getchar();
+ } while (isdigit(LastChar) || LastChar == '.');
+
+ NumVal = strtod(NumStr.c_str(), 0);
+ return tok_number;
+ }
+
+ if (LastChar == '#') {
+ // Comment until end of line.
+ do LastChar = getchar();
+ while (LastChar != EOF && LastChar != '\n' && LastChar != '\r');
+
+ if (LastChar != EOF)
+ return gettok();
+ }
+
+ // Check for end of file. Don't eat the EOF.
+ if (LastChar == EOF)
+ return tok_eof;
+
+ // Otherwise, just return the character as its ascii value.
+ int ThisChar = LastChar;
+ LastChar = getchar();
+ return ThisChar;
+}
+
+//===----------------------------------------------------------------------===//
+// Abstract Syntax Tree (aka Parse Tree)
+//===----------------------------------------------------------------------===//
+
+class IRGenContext;
+
+/// ExprAST - Base class for all expression nodes.
+struct ExprAST {
+ virtual ~ExprAST() {}
+ virtual Value *IRGen(IRGenContext &C) const = 0;
+};
+
+/// NumberExprAST - Expression class for numeric literals like "1.0".
+struct NumberExprAST : public ExprAST {
+ NumberExprAST(double Val) : Val(Val) {}
+ Value *IRGen(IRGenContext &C) const override;
+
+ double Val;
+};
+
+/// VariableExprAST - Expression class for referencing a variable, like "a".
+struct VariableExprAST : public ExprAST {
+ VariableExprAST(std::string Name) : Name(std::move(Name)) {}
+ Value *IRGen(IRGenContext &C) const override;
+
+ std::string Name;
+};
+
+/// UnaryExprAST - Expression class for a unary operator.
+struct UnaryExprAST : public ExprAST {
+ UnaryExprAST(char Opcode, std::unique_ptr<ExprAST> Operand)
+ : Opcode(std::move(Opcode)), Operand(std::move(Operand)) {}
+
+ Value *IRGen(IRGenContext &C) const override;
+
+ char Opcode;
+ std::unique_ptr<ExprAST> Operand;
+};
+
+/// BinaryExprAST - Expression class for a binary operator.
+struct BinaryExprAST : public ExprAST {
+ BinaryExprAST(char Op, std::unique_ptr<ExprAST> LHS,
+ std::unique_ptr<ExprAST> RHS)
+ : Op(Op), LHS(std::move(LHS)), RHS(std::move(RHS)) {}
+
+ Value *IRGen(IRGenContext &C) const override;
+
+ char Op;
+ std::unique_ptr<ExprAST> LHS, RHS;
+};
+
+/// CallExprAST - Expression class for function calls.
+struct CallExprAST : public ExprAST {
+ CallExprAST(std::string CalleeName,
+ std::vector<std::unique_ptr<ExprAST>> Args)
+ : CalleeName(std::move(CalleeName)), Args(std::move(Args)) {}
+
+ Value *IRGen(IRGenContext &C) const override;
+
+ std::string CalleeName;
+ std::vector<std::unique_ptr<ExprAST>> Args;
+};
+
+/// IfExprAST - Expression class for if/then/else.
+struct IfExprAST : public ExprAST {
+ IfExprAST(std::unique_ptr<ExprAST> Cond, std::unique_ptr<ExprAST> Then,
+ std::unique_ptr<ExprAST> Else)
+ : Cond(std::move(Cond)), Then(std::move(Then)), Else(std::move(Else)) {}
+ Value *IRGen(IRGenContext &C) const override;
+
+ std::unique_ptr<ExprAST> Cond, Then, Else;
+};
+
+/// ForExprAST - Expression class for for/in.
+struct ForExprAST : public ExprAST {
+ ForExprAST(std::string VarName, std::unique_ptr<ExprAST> Start,
+ std::unique_ptr<ExprAST> End, std::unique_ptr<ExprAST> Step,
+ std::unique_ptr<ExprAST> Body)
+ : VarName(std::move(VarName)), Start(std::move(Start)), End(std::move(End)),
+ Step(std::move(Step)), Body(std::move(Body)) {}
+
+ Value *IRGen(IRGenContext &C) const override;
+
+ std::string VarName;
+ std::unique_ptr<ExprAST> Start, End, Step, Body;
+};
+
+/// VarExprAST - Expression class for var/in
+struct VarExprAST : public ExprAST {
+ typedef std::pair<std::string, std::unique_ptr<ExprAST>> Binding;
+ typedef std::vector<Binding> BindingList;
+
+ VarExprAST(BindingList VarBindings, std::unique_ptr<ExprAST> Body)
+ : VarBindings(std::move(VarBindings)), Body(std::move(Body)) {}
+
+ Value *IRGen(IRGenContext &C) const override;
+
+ BindingList VarBindings;
+ std::unique_ptr<ExprAST> Body;
+};
+
+/// PrototypeAST - This class represents the "prototype" for a function,
+/// which captures its argument names as well as if it is an operator.
+struct PrototypeAST {
+ PrototypeAST(std::string Name, std::vector<std::string> Args,
+ bool IsOperator = false, unsigned Precedence = 0)
+ : Name(std::move(Name)), Args(std::move(Args)), IsOperator(IsOperator),
+ Precedence(Precedence) {}
+
+ Function *IRGen(IRGenContext &C) const;
+ void CreateArgumentAllocas(Function *F, IRGenContext &C);
+
+ bool isUnaryOp() const { return IsOperator && Args.size() == 1; }
+ bool isBinaryOp() const { return IsOperator && Args.size() == 2; }
+
+ char getOperatorName() const {
+ assert(isUnaryOp() || isBinaryOp());
+ return Name[Name.size()-1];
+ }
+
+ std::string Name;
+ std::vector<std::string> Args;
+ bool IsOperator;
+ unsigned Precedence; // Precedence if a binary op.
+};
+
+/// FunctionAST - This class represents a function definition itself.
+struct FunctionAST {
+ FunctionAST(std::unique_ptr<PrototypeAST> Proto,
+ std::unique_ptr<ExprAST> Body)
+ : Proto(std::move(Proto)), Body(std::move(Body)) {}
+
+ Function *IRGen(IRGenContext &C) const;
+
+ std::unique_ptr<PrototypeAST> Proto;
+ std::unique_ptr<ExprAST> Body;
+};
+
+//===----------------------------------------------------------------------===//
+// Parser
+//===----------------------------------------------------------------------===//
+
+/// CurTok/getNextToken - Provide a simple token buffer. CurTok is the current
+/// token the parser is looking at. getNextToken reads another token from the
+/// lexer and updates CurTok with its results.
+static int CurTok;
+static int getNextToken() {
+ return CurTok = gettok();
+}
+
+/// BinopPrecedence - This holds the precedence for each binary operator that is
+/// defined.
+static std::map<char, int> BinopPrecedence;
+
+/// GetTokPrecedence - Get the precedence of the pending binary operator token.
+static int GetTokPrecedence() {
+ if (!isascii(CurTok))
+ return -1;
+
+ // Make sure it's a declared binop.
+ int TokPrec = BinopPrecedence[CurTok];
+ if (TokPrec <= 0) return -1;
+ return TokPrec;
+}
+
+template <typename T>
+std::unique_ptr<T> ErrorU(const std::string &Str) {
+ std::cerr << "Error: " << Str << "\n";
+ return nullptr;
+}
+
+template <typename T>
+T* ErrorP(const std::string &Str) {
+ std::cerr << "Error: " << Str << "\n";
+ return nullptr;
+}
+
+static std::unique_ptr<ExprAST> ParseExpression();
+
+/// identifierexpr
+/// ::= identifier
+/// ::= identifier '(' expression* ')'
+static std::unique_ptr<ExprAST> ParseIdentifierExpr() {
+ std::string IdName = IdentifierStr;
+
+ getNextToken(); // eat identifier.
+
+ if (CurTok != '(') // Simple variable ref.
+ return llvm::make_unique<VariableExprAST>(IdName);
+
+ // Call.
+ getNextToken(); // eat (
+ std::vector<std::unique_ptr<ExprAST>> Args;
+ if (CurTok != ')') {
+ while (1) {
+ auto Arg = ParseExpression();
+ if (!Arg) return nullptr;
+ Args.push_back(std::move(Arg));
+
+ if (CurTok == ')') break;
+
+ if (CurTok != ',')
+ return ErrorU<CallExprAST>("Expected ')' or ',' in argument list");
+ getNextToken();
+ }
+ }
+
+ // Eat the ')'.
+ getNextToken();
+
+ return llvm::make_unique<CallExprAST>(IdName, std::move(Args));
+}
+
+/// numberexpr ::= number
+static std::unique_ptr<NumberExprAST> ParseNumberExpr() {
+ auto Result = llvm::make_unique<NumberExprAST>(NumVal);
+ getNextToken(); // consume the number
+ return Result;
+}
+
+/// parenexpr ::= '(' expression ')'
+static std::unique_ptr<ExprAST> ParseParenExpr() {
+ getNextToken(); // eat (.
+ auto V = ParseExpression();
+ if (!V)
+ return nullptr;
+
+ if (CurTok != ')')
+ return ErrorU<ExprAST>("expected ')'");
+ getNextToken(); // eat ).
+ return V;
+}
+
+/// ifexpr ::= 'if' expression 'then' expression 'else' expression
+static std::unique_ptr<ExprAST> ParseIfExpr() {
+ getNextToken(); // eat the if.
+
+ // condition.
+ auto Cond = ParseExpression();
+ if (!Cond)
+ return nullptr;
+
+ if (CurTok != tok_then)
+ return ErrorU<ExprAST>("expected then");
+ getNextToken(); // eat the then
+
+ auto Then = ParseExpression();
+ if (!Then)
+ return nullptr;
+
+ if (CurTok != tok_else)
+ return ErrorU<ExprAST>("expected else");
+
+ getNextToken();
+
+ auto Else = ParseExpression();
+ if (!Else)
+ return nullptr;
+
+ return llvm::make_unique<IfExprAST>(std::move(Cond), std::move(Then),
+ std::move(Else));
+}
+
+/// forexpr ::= 'for' identifier '=' expr ',' expr (',' expr)? 'in' expression
+static std::unique_ptr<ForExprAST> ParseForExpr() {
+ getNextToken(); // eat the for.
+
+ if (CurTok != tok_identifier)
+ return ErrorU<ForExprAST>("expected identifier after for");
+
+ std::string IdName = IdentifierStr;
+ getNextToken(); // eat identifier.
+
+ if (CurTok != '=')
+ return ErrorU<ForExprAST>("expected '=' after for");
+ getNextToken(); // eat '='.
+
+
+ auto Start = ParseExpression();
+ if (!Start)
+ return nullptr;
+ if (CurTok != ',')
+ return ErrorU<ForExprAST>("expected ',' after for start value");
+ getNextToken();
+
+ auto End = ParseExpression();
+ if (!End)
+ return nullptr;
+
+ // The step value is optional.
+ std::unique_ptr<ExprAST> Step;
+ if (CurTok == ',') {
+ getNextToken();
+ Step = ParseExpression();
+ if (!Step)
+ return nullptr;
+ }
+
+ if (CurTok != tok_in)
+ return ErrorU<ForExprAST>("expected 'in' after for");
+ getNextToken(); // eat 'in'.
+
+ auto Body = ParseExpression();
+ if (Body)
+ return nullptr;
+
+ return llvm::make_unique<ForExprAST>(IdName, std::move(Start), std::move(End),
+ std::move(Step), std::move(Body));
+}
+
+/// varexpr ::= 'var' identifier ('=' expression)?
+// (',' identifier ('=' expression)?)* 'in' expression
+static std::unique_ptr<VarExprAST> ParseVarExpr() {
+ getNextToken(); // eat the var.
+
+ VarExprAST::BindingList VarBindings;
+
+ // At least one variable name is required.
+ if (CurTok != tok_identifier)
+ return ErrorU<VarExprAST>("expected identifier after var");
+
+ while (1) {
+ std::string Name = IdentifierStr;
+ getNextToken(); // eat identifier.
+
+ // Read the optional initializer.
+ std::unique_ptr<ExprAST> Init;
+ if (CurTok == '=') {
+ getNextToken(); // eat the '='.
+
+ Init = ParseExpression();
+ if (!Init)
+ return nullptr;
+ }
+
+ VarBindings.push_back(VarExprAST::Binding(Name, std::move(Init)));
+
+ // End of var list, exit loop.
+ if (CurTok != ',') break;
+ getNextToken(); // eat the ','.
+
+ if (CurTok != tok_identifier)
+ return ErrorU<VarExprAST>("expected identifier list after var");
+ }
+
+ // At this point, we have to have 'in'.
+ if (CurTok != tok_in)
+ return ErrorU<VarExprAST>("expected 'in' keyword after 'var'");
+ getNextToken(); // eat 'in'.
+
+ auto Body = ParseExpression();
+ if (!Body)
+ return nullptr;
+
+ return llvm::make_unique<VarExprAST>(std::move(VarBindings), std::move(Body));
+}
+
+/// primary
+/// ::= identifierexpr
+/// ::= numberexpr
+/// ::= parenexpr
+/// ::= ifexpr
+/// ::= forexpr
+/// ::= varexpr
+static std::unique_ptr<ExprAST> ParsePrimary() {
+ switch (CurTok) {
+ default: return ErrorU<ExprAST>("unknown token when expecting an expression");
+ case tok_identifier: return ParseIdentifierExpr();
+ case tok_number: return ParseNumberExpr();
+ case '(': return ParseParenExpr();
+ case tok_if: return ParseIfExpr();
+ case tok_for: return ParseForExpr();
+ case tok_var: return ParseVarExpr();
+ }
+}
+
+/// unary
+/// ::= primary
+/// ::= '!' unary
+static std::unique_ptr<ExprAST> ParseUnary() {
+ // If the current token is not an operator, it must be a primary expr.
+ if (!isascii(CurTok) || CurTok == '(' || CurTok == ',')
+ return ParsePrimary();
+
+ // If this is a unary operator, read it.
+ int Opc = CurTok;
+ getNextToken();
+ if (auto Operand = ParseUnary())
+ return llvm::make_unique<UnaryExprAST>(Opc, std::move(Operand));
+ return nullptr;
+}
+
+/// binoprhs
+/// ::= ('+' unary)*
+static std::unique_ptr<ExprAST> ParseBinOpRHS(int ExprPrec,
+ std::unique_ptr<ExprAST> LHS) {
+ // If this is a binop, find its precedence.
+ while (1) {
+ int TokPrec = GetTokPrecedence();
+
+ // If this is a binop that binds at least as tightly as the current binop,
+ // consume it, otherwise we are done.
+ if (TokPrec < ExprPrec)
+ return LHS;
+
+ // Okay, we know this is a binop.
+ int BinOp = CurTok;
+ getNextToken(); // eat binop
+
+ // Parse the unary expression after the binary operator.
+ auto RHS = ParseUnary();
+ if (!RHS)
+ return nullptr;
+
+ // If BinOp binds less tightly with RHS than the operator after RHS, let
+ // the pending operator take RHS as its LHS.
+ int NextPrec = GetTokPrecedence();
+ if (TokPrec < NextPrec) {
+ RHS = ParseBinOpRHS(TokPrec+1, std::move(RHS));
+ if (!RHS)
+ return nullptr;
+ }
+
+ // Merge LHS/RHS.
+ LHS = llvm::make_unique<BinaryExprAST>(BinOp, std::move(LHS), std::move(RHS));
+ }
+}
+
+/// expression
+/// ::= unary binoprhs
+///
+static std::unique_ptr<ExprAST> ParseExpression() {
+ auto LHS = ParseUnary();
+ if (!LHS)
+ return nullptr;
+
+ return ParseBinOpRHS(0, std::move(LHS));
+}
+
+/// prototype
+/// ::= id '(' id* ')'
+/// ::= binary LETTER number? (id, id)
+/// ::= unary LETTER (id)
+static std::unique_ptr<PrototypeAST> ParsePrototype() {
+ std::string FnName;
+
+ unsigned Kind = 0; // 0 = identifier, 1 = unary, 2 = binary.
+ unsigned BinaryPrecedence = 30;
+
+ switch (CurTok) {
+ default:
+ return ErrorU<PrototypeAST>("Expected function name in prototype");
+ case tok_identifier:
+ FnName = IdentifierStr;
+ Kind = 0;
+ getNextToken();
+ break;
+ case tok_unary:
+ getNextToken();
+ if (!isascii(CurTok))
+ return ErrorU<PrototypeAST>("Expected unary operator");
+ FnName = "unary";
+ FnName += (char)CurTok;
+ Kind = 1;
+ getNextToken();
+ break;
+ case tok_binary:
+ getNextToken();
+ if (!isascii(CurTok))
+ return ErrorU<PrototypeAST>("Expected binary operator");
+ FnName = "binary";
+ FnName += (char)CurTok;
+ Kind = 2;
+ getNextToken();
+
+ // Read the precedence if present.
+ if (CurTok == tok_number) {
+ if (NumVal < 1 || NumVal > 100)
+ return ErrorU<PrototypeAST>("Invalid precedecnce: must be 1..100");
+ BinaryPrecedence = (unsigned)NumVal;
+ getNextToken();
+ }
+ break;
+ }
+
+ if (CurTok != '(')
+ return ErrorU<PrototypeAST>("Expected '(' in prototype");
+
+ std::vector<std::string> ArgNames;
+ while (getNextToken() == tok_identifier)
+ ArgNames.push_back(IdentifierStr);
+ if (CurTok != ')')
+ return ErrorU<PrototypeAST>("Expected ')' in prototype");
+
+ // success.
+ getNextToken(); // eat ')'.
+
+ // Verify right number of names for operator.
+ if (Kind && ArgNames.size() != Kind)
+ return ErrorU<PrototypeAST>("Invalid number of operands for operator");
+
+ return llvm::make_unique<PrototypeAST>(FnName, std::move(ArgNames), Kind != 0,
+ BinaryPrecedence);
+}
+
+/// definition ::= 'def' prototype expression
+static std::unique_ptr<FunctionAST> ParseDefinition() {
+ getNextToken(); // eat def.
+ auto Proto = ParsePrototype();
+ if (!Proto)
+ return nullptr;
+
+ if (auto Body = ParseExpression())
+ return llvm::make_unique<FunctionAST>(std::move(Proto), std::move(Body));
+ return nullptr;
+}
+
+/// toplevelexpr ::= expression
+static std::unique_ptr<FunctionAST> ParseTopLevelExpr() {
+ if (auto E = ParseExpression()) {
+ // Make an anonymous proto.
+ auto Proto =
+ llvm::make_unique<PrototypeAST>("__anon_expr", std::vector<std::string>());
+ return llvm::make_unique<FunctionAST>(std::move(Proto), std::move(E));
+ }
+ return nullptr;
+}
+
+/// external ::= 'extern' prototype
+static std::unique_ptr<PrototypeAST> ParseExtern() {
+ getNextToken(); // eat extern.
+ return ParsePrototype();
+}
+
+//===----------------------------------------------------------------------===//
+// Code Generation
+//===----------------------------------------------------------------------===//
+
+// FIXME: Obviously we can do better than this
+std::string GenerateUniqueName(const std::string &Root) {
+ static int i = 0;
+ std::ostringstream NameStream;
+ NameStream << Root << ++i;
+ return NameStream.str();
+}
+
+std::string MakeLegalFunctionName(std::string Name)
+{
+ std::string NewName;
+ assert(!Name.empty() && "Base name must not be empty");
+
+ // Start with what we have
+ NewName = Name;
+
+ // Look for a numberic first character
+ if (NewName.find_first_of("0123456789") == 0) {
+ NewName.insert(0, 1, 'n');
+ }
+
+ // Replace illegal characters with their ASCII equivalent
+ std::string legal_elements = "_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+ size_t pos;
+ while ((pos = NewName.find_first_not_of(legal_elements)) != std::string::npos) {
+ std::ostringstream NumStream;
+ NumStream << (int)NewName.at(pos);
+ NewName = NewName.replace(pos, 1, NumStream.str());
+ }
+
+ return NewName;
+}
+
+class SessionContext {
+public:
+ SessionContext(LLVMContext &C)
+ : Context(C), TM(EngineBuilder().selectTarget()) {}
+ LLVMContext& getLLVMContext() const { return Context; }
+ TargetMachine& getTarget() { return *TM; }
+ void addPrototypeAST(std::unique_ptr<PrototypeAST> P);
+ PrototypeAST* getPrototypeAST(const std::string &Name);
+private:
+ typedef std::map<std::string, std::unique_ptr<PrototypeAST>> PrototypeMap;
+
+ LLVMContext &Context;
+ std::unique_ptr<TargetMachine> TM;
+
+ PrototypeMap Prototypes;
+};
+
+void SessionContext::addPrototypeAST(std::unique_ptr<PrototypeAST> P) {
+ Prototypes[P->Name] = std::move(P);
+}
+
+PrototypeAST* SessionContext::getPrototypeAST(const std::string &Name) {
+ PrototypeMap::iterator I = Prototypes.find(Name);
+ if (I != Prototypes.end())
+ return I->second.get();
+ return nullptr;
+}
+
+class IRGenContext {
+public:
+
+ IRGenContext(SessionContext &S)
+ : Session(S),
+ M(new Module(GenerateUniqueName("jit_module_"),
+ Session.getLLVMContext())),
+ Builder(Session.getLLVMContext()) {
+ M->setDataLayout(Session.getTarget().getDataLayout());
+ }
+
+ SessionContext& getSession() { return Session; }
+ Module& getM() const { return *M; }
+ std::unique_ptr<Module> takeM() { return std::move(M); }
+ IRBuilder<>& getBuilder() { return Builder; }
+ LLVMContext& getLLVMContext() { return Session.getLLVMContext(); }
+ Function* getPrototype(const std::string &Name);
+
+ std::map<std::string, AllocaInst*> NamedValues;
+private:
+ SessionContext &Session;
+ std::unique_ptr<Module> M;
+ IRBuilder<> Builder;
+};
+
+Function* IRGenContext::getPrototype(const std::string &Name) {
+ if (Function *ExistingProto = M->getFunction(Name))
+ return ExistingProto;
+ if (PrototypeAST *ProtoAST = Session.getPrototypeAST(Name))
+ return ProtoAST->IRGen(*this);
+ return nullptr;
+}
+
+/// CreateEntryBlockAlloca - Create an alloca instruction in the entry block of
+/// the function. This is used for mutable variables etc.
+static AllocaInst *CreateEntryBlockAlloca(Function *TheFunction,
+ const std::string &VarName) {
+ IRBuilder<> TmpB(&TheFunction->getEntryBlock(),
+ TheFunction->getEntryBlock().begin());
+ return TmpB.CreateAlloca(Type::getDoubleTy(getGlobalContext()), 0,
+ VarName.c_str());
+}
+
+Value *NumberExprAST::IRGen(IRGenContext &C) const {
+ return ConstantFP::get(C.getLLVMContext(), APFloat(Val));
+}
+
+Value *VariableExprAST::IRGen(IRGenContext &C) const {
+ // Look this variable up in the function.
+ Value *V = C.NamedValues[Name];
+
+ if (V == 0)
+ return ErrorP<Value>("Unknown variable name '" + Name + "'");
+
+ // Load the value.
+ return C.getBuilder().CreateLoad(V, Name.c_str());
+}
+
+Value *UnaryExprAST::IRGen(IRGenContext &C) const {
+ if (Value *OperandV = Operand->IRGen(C)) {
+ std::string FnName = MakeLegalFunctionName(std::string("unary")+Opcode);
+ if (Function *F = C.getPrototype(FnName))
+ return C.getBuilder().CreateCall(F, OperandV, "unop");
+ return ErrorP<Value>("Unknown unary operator");
+ }
+
+ // Could not codegen operand - return null.
+ return nullptr;
+}
+
+Value *BinaryExprAST::IRGen(IRGenContext &C) const {
+ // Special case '=' because we don't want to emit the LHS as an expression.
+ if (Op == '=') {
+ // Assignment requires the LHS to be an identifier.
+ auto LHSVar = static_cast<VariableExprAST&>(*LHS);
+ // Codegen the RHS.
+ Value *Val = RHS->IRGen(C);
+ if (!Val) return nullptr;
+
+ // Look up the name.
+ if (auto Variable = C.NamedValues[LHSVar.Name]) {
+ C.getBuilder().CreateStore(Val, Variable);
+ return Val;
+ }
+ return ErrorP<Value>("Unknown variable name");
+ }
+
+ Value *L = LHS->IRGen(C);
+ Value *R = RHS->IRGen(C);
+ if (!L || !R) return nullptr;
+
+ switch (Op) {
+ case '+': return C.getBuilder().CreateFAdd(L, R, "addtmp");
+ case '-': return C.getBuilder().CreateFSub(L, R, "subtmp");
+ case '*': return C.getBuilder().CreateFMul(L, R, "multmp");
+ case '/': return C.getBuilder().CreateFDiv(L, R, "divtmp");
+ case '<':
+ L = C.getBuilder().CreateFCmpULT(L, R, "cmptmp");
+ // Convert bool 0/1 to double 0.0 or 1.0
+ return C.getBuilder().CreateUIToFP(L, Type::getDoubleTy(getGlobalContext()),
+ "booltmp");
+ default: break;
+ }
+
+ // If it wasn't a builtin binary operator, it must be a user defined one. Emit
+ // a call to it.
+ std::string FnName = MakeLegalFunctionName(std::string("binary")+Op);
+ if (Function *F = C.getPrototype(FnName)) {
+ Value *Ops[] = { L, R };
+ return C.getBuilder().CreateCall(F, Ops, "binop");
+ }
+
+ return ErrorP<Value>("Unknown binary operator");
+}
+
+Value *CallExprAST::IRGen(IRGenContext &C) const {
+ // Look up the name in the global module table.
+ if (auto CalleeF = C.getPrototype(CalleeName)) {
+ // If argument mismatch error.
+ if (CalleeF->arg_size() != Args.size())
+ return ErrorP<Value>("Incorrect # arguments passed");
+
+ std::vector<Value*> ArgsV;
+ for (unsigned i = 0, e = Args.size(); i != e; ++i) {
+ ArgsV.push_back(Args[i]->IRGen(C));
+ if (!ArgsV.back()) return nullptr;
+ }
+
+ return C.getBuilder().CreateCall(CalleeF, ArgsV, "calltmp");
+ }
+
+ return ErrorP<Value>("Unknown function referenced");
+}
+
+Value *IfExprAST::IRGen(IRGenContext &C) const {
+ Value *CondV = Cond->IRGen(C);
+ if (!CondV) return nullptr;
+
+ // Convert condition to a bool by comparing equal to 0.0.
+ ConstantFP *FPZero =
+ ConstantFP::get(C.getLLVMContext(), APFloat(0.0));
+ CondV = C.getBuilder().CreateFCmpONE(CondV, FPZero, "ifcond");
+
+ Function *TheFunction = C.getBuilder().GetInsertBlock()->getParent();
+
+ // Create blocks for the then and else cases. Insert the 'then' block at the
+ // end of the function.
+ BasicBlock *ThenBB = BasicBlock::Create(C.getLLVMContext(), "then", TheFunction);
+ BasicBlock *ElseBB = BasicBlock::Create(C.getLLVMContext(), "else");
+ BasicBlock *MergeBB = BasicBlock::Create(C.getLLVMContext(), "ifcont");
+
+ C.getBuilder().CreateCondBr(CondV, ThenBB, ElseBB);
+
+ // Emit then value.
+ C.getBuilder().SetInsertPoint(ThenBB);
+
+ Value *ThenV = Then->IRGen(C);
+ if (!ThenV) return nullptr;
+
+ C.getBuilder().CreateBr(MergeBB);
+ // Codegen of 'Then' can change the current block, update ThenBB for the PHI.
+ ThenBB = C.getBuilder().GetInsertBlock();
+
+ // Emit else block.
+ TheFunction->getBasicBlockList().push_back(ElseBB);
+ C.getBuilder().SetInsertPoint(ElseBB);
+
+ Value *ElseV = Else->IRGen(C);
+ if (!ElseV) return nullptr;
+
+ C.getBuilder().CreateBr(MergeBB);
+ // Codegen of 'Else' can change the current block, update ElseBB for the PHI.
+ ElseBB = C.getBuilder().GetInsertBlock();
+
+ // Emit merge block.
+ TheFunction->getBasicBlockList().push_back(MergeBB);
+ C.getBuilder().SetInsertPoint(MergeBB);
+ PHINode *PN = C.getBuilder().CreatePHI(Type::getDoubleTy(getGlobalContext()), 2,
+ "iftmp");
+
+ PN->addIncoming(ThenV, ThenBB);
+ PN->addIncoming(ElseV, ElseBB);
+ return PN;
+}
+
+Value *ForExprAST::IRGen(IRGenContext &C) const {
+ // Output this as:
+ // var = alloca double
+ // ...
+ // start = startexpr
+ // store start -> var
+ // goto loop
+ // loop:
+ // ...
+ // bodyexpr
+ // ...
+ // loopend:
+ // step = stepexpr
+ // endcond = endexpr
+ //
+ // curvar = load var
+ // nextvar = curvar + step
+ // store nextvar -> var
+ // br endcond, loop, endloop
+ // outloop:
+
+ Function *TheFunction = C.getBuilder().GetInsertBlock()->getParent();
+
+ // Create an alloca for the variable in the entry block.
+ AllocaInst *Alloca = CreateEntryBlockAlloca(TheFunction, VarName);
+
+ // Emit the start code first, without 'variable' in scope.
+ Value *StartVal = Start->IRGen(C);
+ if (!StartVal) return nullptr;
+
+ // Store the value into the alloca.
+ C.getBuilder().CreateStore(StartVal, Alloca);
+
+ // Make the new basic block for the loop header, inserting after current
+ // block.
+ BasicBlock *LoopBB = BasicBlock::Create(getGlobalContext(), "loop", TheFunction);
+
+ // Insert an explicit fall through from the current block to the LoopBB.
+ C.getBuilder().CreateBr(LoopBB);
+
+ // Start insertion in LoopBB.
+ C.getBuilder().SetInsertPoint(LoopBB);
+
+ // Within the loop, the variable is defined equal to the PHI node. If it
+ // shadows an existing variable, we have to restore it, so save it now.
+ AllocaInst *OldVal = C.NamedValues[VarName];
+ C.NamedValues[VarName] = Alloca;
+
+ // Emit the body of the loop. This, like any other expr, can change the
+ // current BB. Note that we ignore the value computed by the body, but don't
+ // allow an error.
+ if (!Body->IRGen(C))
+ return nullptr;
+
+ // Emit the step value.
+ Value *StepVal;
+ if (Step) {
+ StepVal = Step->IRGen(C);
+ if (!StepVal) return nullptr;
+ } else {
+ // If not specified, use 1.0.
+ StepVal = ConstantFP::get(getGlobalContext(), APFloat(1.0));
+ }
+
+ // Compute the end condition.
+ Value *EndCond = End->IRGen(C);
+ if (EndCond == 0) return EndCond;
+
+ // Reload, increment, and restore the alloca. This handles the case where
+ // the body of the loop mutates the variable.
+ Value *CurVar = C.getBuilder().CreateLoad(Alloca, VarName.c_str());
+ Value *NextVar = C.getBuilder().CreateFAdd(CurVar, StepVal, "nextvar");
+ C.getBuilder().CreateStore(NextVar, Alloca);
+
+ // Convert condition to a bool by comparing equal to 0.0.
+ EndCond = C.getBuilder().CreateFCmpONE(EndCond,
+ ConstantFP::get(getGlobalContext(), APFloat(0.0)),
+ "loopcond");
+
+ // Create the "after loop" block and insert it.
+ BasicBlock *AfterBB = BasicBlock::Create(getGlobalContext(), "afterloop", TheFunction);
+
+ // Insert the conditional branch into the end of LoopEndBB.
+ C.getBuilder().CreateCondBr(EndCond, LoopBB, AfterBB);
+
+ // Any new code will be inserted in AfterBB.
+ C.getBuilder().SetInsertPoint(AfterBB);
+
+ // Restore the unshadowed variable.
+ if (OldVal)
+ C.NamedValues[VarName] = OldVal;
+ else
+ C.NamedValues.erase(VarName);
+
+
+ // for expr always returns 0.0.
+ return Constant::getNullValue(Type::getDoubleTy(getGlobalContext()));
+}
+
+Value *VarExprAST::IRGen(IRGenContext &C) const {
+ std::vector<AllocaInst *> OldBindings;
+
+ Function *TheFunction = C.getBuilder().GetInsertBlock()->getParent();
+
+ // Register all variables and emit their initializer.
+ for (unsigned i = 0, e = VarBindings.size(); i != e; ++i) {
+ auto &VarName = VarBindings[i].first;
+ auto &Init = VarBindings[i].second;
+
+ // Emit the initializer before adding the variable to scope, this prevents
+ // the initializer from referencing the variable itself, and permits stuff
+ // like this:
+ // var a = 1 in
+ // var a = a in ... # refers to outer 'a'.
+ Value *InitVal;
+ if (Init) {
+ InitVal = Init->IRGen(C);
+ if (!InitVal) return nullptr;
+ } else // If not specified, use 0.0.
+ InitVal = ConstantFP::get(getGlobalContext(), APFloat(0.0));
+
+ AllocaInst *Alloca = CreateEntryBlockAlloca(TheFunction, VarName);
+ C.getBuilder().CreateStore(InitVal, Alloca);
+
+ // Remember the old variable binding so that we can restore the binding when
+ // we unrecurse.
+ OldBindings.push_back(C.NamedValues[VarName]);
+
+ // Remember this binding.
+ C.NamedValues[VarName] = Alloca;
+ }
+
+ // Codegen the body, now that all vars are in scope.
+ Value *BodyVal = Body->IRGen(C);
+ if (!BodyVal) return nullptr;
+
+ // Pop all our variables from scope.
+ for (unsigned i = 0, e = VarBindings.size(); i != e; ++i)
+ C.NamedValues[VarBindings[i].first] = OldBindings[i];
+
+ // Return the body computation.
+ return BodyVal;
+}
+
+Function *PrototypeAST::IRGen(IRGenContext &C) const {
+ std::string FnName = MakeLegalFunctionName(Name);
+
+ // Make the function type: double(double,double) etc.
+ std::vector<Type*> Doubles(Args.size(),
+ Type::getDoubleTy(getGlobalContext()));
+ FunctionType *FT = FunctionType::get(Type::getDoubleTy(getGlobalContext()),
+ Doubles, false);
+ Function *F = Function::Create(FT, Function::ExternalLinkage, FnName,
+ &C.getM());
+
+ // If F conflicted, there was already something named 'FnName'. If it has a
+ // body, don't allow redefinition or reextern.
+ if (F->getName() != FnName) {
+ // Delete the one we just made and get the existing one.
+ F->eraseFromParent();
+ F = C.getM().getFunction(Name);
+
+ // If F already has a body, reject this.
+ if (!F->empty()) {
+ ErrorP<Function>("redefinition of function");
+ return nullptr;
+ }
+
+ // If F took a different number of args, reject.
+ if (F->arg_size() != Args.size()) {
+ ErrorP<Function>("redefinition of function with different # args");
+ return nullptr;
+ }
+ }
+
+ // Set names for all arguments.
+ unsigned Idx = 0;
+ for (Function::arg_iterator AI = F->arg_begin(); Idx != Args.size();
+ ++AI, ++Idx)
+ AI->setName(Args[Idx]);
+
+ return F;
+}
+
+/// CreateArgumentAllocas - Create an alloca for each argument and register the
+/// argument in the symbol table so that references to it will succeed.
+void PrototypeAST::CreateArgumentAllocas(Function *F, IRGenContext &C) {
+ Function::arg_iterator AI = F->arg_begin();
+ for (unsigned Idx = 0, e = Args.size(); Idx != e; ++Idx, ++AI) {
+ // Create an alloca for this variable.
+ AllocaInst *Alloca = CreateEntryBlockAlloca(F, Args[Idx]);
+
+ // Store the initial value into the alloca.
+ C.getBuilder().CreateStore(AI, Alloca);
+
+ // Add arguments to variable symbol table.
+ C.NamedValues[Args[Idx]] = Alloca;
+ }
+}
+
+Function *FunctionAST::IRGen(IRGenContext &C) const {
+ C.NamedValues.clear();
+
+ Function *TheFunction = Proto->IRGen(C);
+ if (!TheFunction)
+ return nullptr;
+
+ // If this is an operator, install it.
+ if (Proto->isBinaryOp())
+ BinopPrecedence[Proto->getOperatorName()] = Proto->Precedence;
+
+ // Create a new basic block to start insertion into.
+ BasicBlock *BB = BasicBlock::Create(getGlobalContext(), "entry", TheFunction);
+ C.getBuilder().SetInsertPoint(BB);
+
+ // Add all arguments to the symbol table and create their allocas.
+ Proto->CreateArgumentAllocas(TheFunction, C);
+
+ if (Value *RetVal = Body->IRGen(C)) {
+ // Finish off the function.
+ C.getBuilder().CreateRet(RetVal);
+
+ // Validate the generated code, checking for consistency.
+ verifyFunction(*TheFunction);
+
+ return TheFunction;
+ }
+
+ // Error reading body, remove function.
+ TheFunction->eraseFromParent();
+
+ if (Proto->isBinaryOp())
+ BinopPrecedence.erase(Proto->getOperatorName());
+ return nullptr;
+}
+
+//===----------------------------------------------------------------------===//
+// Top-Level parsing and JIT Driver
+//===----------------------------------------------------------------------===//
+
+static std::unique_ptr<llvm::Module> IRGen(SessionContext &S,
+ const FunctionAST &F) {
+ IRGenContext C(S);
+ auto LF = F.IRGen(C);
+ if (!LF)
+ return nullptr;
+#ifndef MINIMAL_STDERR_OUTPUT
+ fprintf(stderr, "Read function definition:");
+ LF->dump();
+#endif
+ return C.takeM();
+}
+
+template <typename T>
+static std::vector<T> singletonSet(T t) {
+ std::vector<T> Vec;
+ Vec.push_back(std::move(t));
+ return Vec;
+}
+
+class KaleidoscopeJIT {
+public:
+ typedef ObjectLinkingLayer<> ObjLayerT;
+ typedef IRCompileLayer<ObjLayerT> CompileLayerT;
+ typedef LazyEmittingLayer<CompileLayerT> LazyEmitLayerT;
+
+ typedef LazyEmitLayerT::ModuleSetHandleT ModuleHandleT;
+
+ KaleidoscopeJIT(SessionContext &Session)
+ : Mang(Session.getTarget().getDataLayout()),
+ CompileLayer(ObjectLayer, SimpleCompiler(Session.getTarget())),
+ LazyEmitLayer(CompileLayer) {}
+
+ std::string mangle(const std::string &Name) {
+ std::string MangledName;
+ {
+ raw_string_ostream MangledNameStream(MangledName);
+ Mang.getNameWithPrefix(MangledNameStream, Name);
+ }
+ return MangledName;
+ }
+
+ ModuleHandleT addModule(std::unique_ptr<Module> M) {
+ // We need a memory manager to allocate memory and resolve symbols for this
+ // new module. Create one that resolves symbols by looking back into the
+ // JIT.
+ auto MM = createLookasideRTDyldMM<SectionMemoryManager>(
+ [&](const std::string &Name) {
+ return findSymbol(Name).getAddress();
+ },
+ [](const std::string &S) { return 0; } );
+
+ return LazyEmitLayer.addModuleSet(singletonSet(std::move(M)),
+ std::move(MM));
+ }
+
+ void removeModule(ModuleHandleT H) { LazyEmitLayer.removeModuleSet(H); }
+
+ JITSymbol findSymbol(const std::string &Name) {
+ return LazyEmitLayer.findSymbol(Name, true);
+ }
+
+ JITSymbol findUnmangledSymbol(const std::string Name) {
+ return findSymbol(mangle(Name));
+ }
+
+private:
+
+ Mangler Mang;
+ ObjLayerT ObjectLayer;
+ CompileLayerT CompileLayer;
+ LazyEmitLayerT LazyEmitLayer;
+};
+
+static void HandleDefinition(SessionContext &S, KaleidoscopeJIT &J) {
+ if (auto F = ParseDefinition()) {
+ if (auto M = IRGen(S, *F)) {
+ S.addPrototypeAST(llvm::make_unique<PrototypeAST>(*F->Proto));
+ J.addModule(std::move(M));
+ }
+ } else {
+ // Skip token for error recovery.
+ getNextToken();
+ }
+}
+
+static void HandleExtern(SessionContext &S) {
+ if (auto P = ParseExtern())
+ S.addPrototypeAST(std::move(P));
+ else {
+ // Skip token for error recovery.
+ getNextToken();
+ }
+}
+
+static void HandleTopLevelExpression(SessionContext &S, KaleidoscopeJIT &J) {
+ // Evaluate a top-level expression into an anonymous function.
+ if (auto F = ParseTopLevelExpr()) {
+ IRGenContext C(S);
+ if (auto ExprFunc = F->IRGen(C)) {
+#ifndef MINIMAL_STDERR_OUTPUT
+ std::cerr << "Expression function:\n";
+ ExprFunc->dump();
+#endif
+ // Add the CodeGen'd module to the JIT. Keep a handle to it: We can remove
+ // this module as soon as we've executed Function ExprFunc.
+ auto H = J.addModule(C.takeM());
+
+ // Get the address of the JIT'd function in memory.
+ auto ExprSymbol = J.findUnmangledSymbol("__anon_expr");
+
+ // Cast it to the right type (takes no arguments, returns a double) so we
+ // can call it as a native function.
+ double (*FP)() = (double (*)())(intptr_t)ExprSymbol.getAddress();
+#ifdef MINIMAL_STDERR_OUTPUT
+ FP();
+#else
+ std::cerr << "Evaluated to " << FP() << "\n";
+#endif
+
+ // Remove the function.
+ J.removeModule(H);
+ }
+ } else {
+ // Skip token for error recovery.
+ getNextToken();
+ }
+}
+
+/// top ::= definition | external | expression | ';'
+static void MainLoop() {
+ SessionContext S(getGlobalContext());
+ KaleidoscopeJIT J(S);
+
+ while (1) {
+ switch (CurTok) {
+ case tok_eof: return;
+ case ';': getNextToken(); continue; // ignore top-level semicolons.
+ case tok_def: HandleDefinition(S, J); break;
+ case tok_extern: HandleExtern(S); break;
+ default: HandleTopLevelExpression(S, J); break;
+ }
+#ifndef MINIMAL_STDERR_OUTPUT
+ std::cerr << "ready> ";
+#endif
+ }
+}
+
+//===----------------------------------------------------------------------===//
+// "Library" functions that can be "extern'd" from user code.
+//===----------------------------------------------------------------------===//
+
+/// putchard - putchar that takes a double and returns 0.
+extern "C"
+double putchard(double X) {
+ putchar((char)X);
+ return 0;
+}
+
+/// printd - printf that takes a double prints it as "%f\n", returning 0.
+extern "C"
+double printd(double X) {
+ printf("%f", X);
+ return 0;
+}
+
+extern "C"
+double printlf() {
+ printf("\n");
+ return 0;
+}
+
+//===----------------------------------------------------------------------===//
+// Main driver code.
+//===----------------------------------------------------------------------===//
+
+int main() {
+ InitializeNativeTarget();
+ InitializeNativeTargetAsmPrinter();
+ InitializeNativeTargetAsmParser();
+
+ // Install standard binary operators.
+ // 1 is lowest precedence.
+ BinopPrecedence['='] = 2;
+ BinopPrecedence['<'] = 10;
+ BinopPrecedence['+'] = 20;
+ BinopPrecedence['-'] = 20;
+ BinopPrecedence['/'] = 40;
+ BinopPrecedence['*'] = 40; // highest.
+
+ // Prime the first token.
+#ifndef MINIMAL_STDERR_OUTPUT
+ std::cerr << "ready> ";
+#endif
+ getNextToken();
+
+ std::cerr << std::fixed;
+
+ // Run the main "interpreter loop" now.
+ MainLoop();
+
+ return 0;
+}
+
diff --git a/examples/Kaleidoscope/Orc/lazy_irgen/CMakeLists.txt b/examples/Kaleidoscope/Orc/lazy_irgen/CMakeLists.txt
new file mode 100644
index 0000000..4488681
--- /dev/null
+++ b/examples/Kaleidoscope/Orc/lazy_irgen/CMakeLists.txt
@@ -0,0 +1,12 @@
+set(LLVM_LINK_COMPONENTS
+ Core
+ ExecutionEngine
+ Object
+ RuntimeDyld
+ Support
+ native
+ )
+
+add_kaleidoscope_chapter(Kaleidoscope-Orc-lazy_irgen
+ toy.cpp
+ )
diff --git a/examples/Kaleidoscope/Orc/lazy_irgen/Makefile b/examples/Kaleidoscope/Orc/lazy_irgen/Makefile
new file mode 100644
index 0000000..5536314
--- /dev/null
+++ b/examples/Kaleidoscope/Orc/lazy_irgen/Makefile
@@ -0,0 +1,17 @@
+UNAME := $(shell uname -s)
+
+ifeq ($(UNAME),Darwin)
+ CXX := xcrun --sdk macosx clang++
+else
+ CXX := clang++
+endif
+
+LLVM_CXXFLAGS := $(shell llvm-config --cxxflags)
+LLVM_LDFLAGS := $(shell llvm-config --ldflags --system-libs --libs core orcjit native)
+
+toy: toy.cpp
+ $(CXX) $(LLVM_CXXFLAGS) -Wall -std=c++11 -g -O0 -rdynamic -fno-rtti -o toy toy.cpp $(LLVM_LDFLAGS)
+
+.PHONY: clean
+clean:
+ rm -f toy
diff --git a/examples/Kaleidoscope/Orc/lazy_irgen/README.txt b/examples/Kaleidoscope/Orc/lazy_irgen/README.txt
new file mode 100644
index 0000000..9aaa431
--- /dev/null
+++ b/examples/Kaleidoscope/Orc/lazy_irgen/README.txt
@@ -0,0 +1,16 @@
+//===----------------------------------------------------------------------===/
+// Kaleidoscope with Orc - Lazy IRGen Version
+//===----------------------------------------------------------------------===//
+
+This version of Kaleidoscope with Orc demonstrates lazy IR-generation.
+Building on the lazy-codegen version of the tutorial, this version reduces the
+amount of up-front work that must be done by lazily IRgen'ing ASTs. When a
+function definition is entered, its AST is added to a map of available
+definitions. No IRGen is performed at this point and nothing is added to the JIT.
+When attempting to resolve symbol addresses, the lambda in
+KaleidoscopeJIT::getSymbolAddress will scan the AST map and generate IR on the
+fly.
+
+This directory contains a Makefile that allows the code to be built in a
+standalone manner, independent of the larger LLVM build infrastructure. To build
+the program you will need to have 'clang++' and 'llvm-config' in your path.
diff --git a/examples/Kaleidoscope/Orc/lazy_irgen/toy.cpp b/examples/Kaleidoscope/Orc/lazy_irgen/toy.cpp
new file mode 100644
index 0000000..d7744ec
--- /dev/null
+++ b/examples/Kaleidoscope/Orc/lazy_irgen/toy.cpp
@@ -0,0 +1,1373 @@
+#include "llvm/Analysis/Passes.h"
+#include "llvm/ExecutionEngine/Orc/CompileUtils.h"
+#include "llvm/ExecutionEngine/Orc/IRCompileLayer.h"
+#include "llvm/ExecutionEngine/Orc/LazyEmittingLayer.h"
+#include "llvm/ExecutionEngine/Orc/ObjectLinkingLayer.h"
+#include "llvm/IR/DataLayout.h"
+#include "llvm/IR/DerivedTypes.h"
+#include "llvm/IR/IRBuilder.h"
+#include "llvm/IR/LegacyPassManager.h"
+#include "llvm/IR/LLVMContext.h"
+#include "llvm/IR/Module.h"
+#include "llvm/IR/Verifier.h"
+#include "llvm/Support/TargetSelect.h"
+#include "llvm/Transforms/Scalar.h"
+#include <cctype>
+#include <iomanip>
+#include <iostream>
+#include <map>
+#include <sstream>
+#include <string>
+#include <vector>
+
+using namespace llvm;
+using namespace llvm::orc;
+
+//===----------------------------------------------------------------------===//
+// Lexer
+//===----------------------------------------------------------------------===//
+
+// The lexer returns tokens [0-255] if it is an unknown character, otherwise one
+// of these for known things.
+enum Token {
+ tok_eof = -1,
+
+ // commands
+ tok_def = -2, tok_extern = -3,
+
+ // primary
+ tok_identifier = -4, tok_number = -5,
+
+ // control
+ tok_if = -6, tok_then = -7, tok_else = -8,
+ tok_for = -9, tok_in = -10,
+
+ // operators
+ tok_binary = -11, tok_unary = -12,
+
+ // var definition
+ tok_var = -13
+};
+
+static std::string IdentifierStr; // Filled in if tok_identifier
+static double NumVal; // Filled in if tok_number
+
+/// gettok - Return the next token from standard input.
+static int gettok() {
+ static int LastChar = ' ';
+
+ // Skip any whitespace.
+ while (isspace(LastChar))
+ LastChar = getchar();
+
+ if (isalpha(LastChar)) { // identifier: [a-zA-Z][a-zA-Z0-9]*
+ IdentifierStr = LastChar;
+ while (isalnum((LastChar = getchar())))
+ IdentifierStr += LastChar;
+
+ if (IdentifierStr == "def") return tok_def;
+ if (IdentifierStr == "extern") return tok_extern;
+ if (IdentifierStr == "if") return tok_if;
+ if (IdentifierStr == "then") return tok_then;
+ if (IdentifierStr == "else") return tok_else;
+ if (IdentifierStr == "for") return tok_for;
+ if (IdentifierStr == "in") return tok_in;
+ if (IdentifierStr == "binary") return tok_binary;
+ if (IdentifierStr == "unary") return tok_unary;
+ if (IdentifierStr == "var") return tok_var;
+ return tok_identifier;
+ }
+
+ if (isdigit(LastChar) || LastChar == '.') { // Number: [0-9.]+
+ std::string NumStr;
+ do {
+ NumStr += LastChar;
+ LastChar = getchar();
+ } while (isdigit(LastChar) || LastChar == '.');
+
+ NumVal = strtod(NumStr.c_str(), 0);
+ return tok_number;
+ }
+
+ if (LastChar == '#') {
+ // Comment until end of line.
+ do LastChar = getchar();
+ while (LastChar != EOF && LastChar != '\n' && LastChar != '\r');
+
+ if (LastChar != EOF)
+ return gettok();
+ }
+
+ // Check for end of file. Don't eat the EOF.
+ if (LastChar == EOF)
+ return tok_eof;
+
+ // Otherwise, just return the character as its ascii value.
+ int ThisChar = LastChar;
+ LastChar = getchar();
+ return ThisChar;
+}
+
+//===----------------------------------------------------------------------===//
+// Abstract Syntax Tree (aka Parse Tree)
+//===----------------------------------------------------------------------===//
+
+class IRGenContext;
+
+/// ExprAST - Base class for all expression nodes.
+struct ExprAST {
+ virtual ~ExprAST() {}
+ virtual Value *IRGen(IRGenContext &C) const = 0;
+};
+
+/// NumberExprAST - Expression class for numeric literals like "1.0".
+struct NumberExprAST : public ExprAST {
+ NumberExprAST(double Val) : Val(Val) {}
+ Value *IRGen(IRGenContext &C) const override;
+
+ double Val;
+};
+
+/// VariableExprAST - Expression class for referencing a variable, like "a".
+struct VariableExprAST : public ExprAST {
+ VariableExprAST(std::string Name) : Name(std::move(Name)) {}
+ Value *IRGen(IRGenContext &C) const override;
+
+ std::string Name;
+};
+
+/// UnaryExprAST - Expression class for a unary operator.
+struct UnaryExprAST : public ExprAST {
+ UnaryExprAST(char Opcode, std::unique_ptr<ExprAST> Operand)
+ : Opcode(std::move(Opcode)), Operand(std::move(Operand)) {}
+
+ Value *IRGen(IRGenContext &C) const override;
+
+ char Opcode;
+ std::unique_ptr<ExprAST> Operand;
+};
+
+/// BinaryExprAST - Expression class for a binary operator.
+struct BinaryExprAST : public ExprAST {
+ BinaryExprAST(char Op, std::unique_ptr<ExprAST> LHS,
+ std::unique_ptr<ExprAST> RHS)
+ : Op(Op), LHS(std::move(LHS)), RHS(std::move(RHS)) {}
+
+ Value *IRGen(IRGenContext &C) const override;
+
+ char Op;
+ std::unique_ptr<ExprAST> LHS, RHS;
+};
+
+/// CallExprAST - Expression class for function calls.
+struct CallExprAST : public ExprAST {
+ CallExprAST(std::string CalleeName,
+ std::vector<std::unique_ptr<ExprAST>> Args)
+ : CalleeName(std::move(CalleeName)), Args(std::move(Args)) {}
+
+ Value *IRGen(IRGenContext &C) const override;
+
+ std::string CalleeName;
+ std::vector<std::unique_ptr<ExprAST>> Args;
+};
+
+/// IfExprAST - Expression class for if/then/else.
+struct IfExprAST : public ExprAST {
+ IfExprAST(std::unique_ptr<ExprAST> Cond, std::unique_ptr<ExprAST> Then,
+ std::unique_ptr<ExprAST> Else)
+ : Cond(std::move(Cond)), Then(std::move(Then)), Else(std::move(Else)) {}
+ Value *IRGen(IRGenContext &C) const override;
+
+ std::unique_ptr<ExprAST> Cond, Then, Else;
+};
+
+/// ForExprAST - Expression class for for/in.
+struct ForExprAST : public ExprAST {
+ ForExprAST(std::string VarName, std::unique_ptr<ExprAST> Start,
+ std::unique_ptr<ExprAST> End, std::unique_ptr<ExprAST> Step,
+ std::unique_ptr<ExprAST> Body)
+ : VarName(std::move(VarName)), Start(std::move(Start)), End(std::move(End)),
+ Step(std::move(Step)), Body(std::move(Body)) {}
+
+ Value *IRGen(IRGenContext &C) const override;
+
+ std::string VarName;
+ std::unique_ptr<ExprAST> Start, End, Step, Body;
+};
+
+/// VarExprAST - Expression class for var/in
+struct VarExprAST : public ExprAST {
+ typedef std::pair<std::string, std::unique_ptr<ExprAST>> Binding;
+ typedef std::vector<Binding> BindingList;
+
+ VarExprAST(BindingList VarBindings, std::unique_ptr<ExprAST> Body)
+ : VarBindings(std::move(VarBindings)), Body(std::move(Body)) {}
+
+ Value *IRGen(IRGenContext &C) const override;
+
+ BindingList VarBindings;
+ std::unique_ptr<ExprAST> Body;
+};
+
+/// PrototypeAST - This class represents the "prototype" for a function,
+/// which captures its argument names as well as if it is an operator.
+struct PrototypeAST {
+ PrototypeAST(std::string Name, std::vector<std::string> Args,
+ bool IsOperator = false, unsigned Precedence = 0)
+ : Name(std::move(Name)), Args(std::move(Args)), IsOperator(IsOperator),
+ Precedence(Precedence) {}
+
+ Function *IRGen(IRGenContext &C) const;
+ void CreateArgumentAllocas(Function *F, IRGenContext &C);
+
+ bool isUnaryOp() const { return IsOperator && Args.size() == 1; }
+ bool isBinaryOp() const { return IsOperator && Args.size() == 2; }
+
+ char getOperatorName() const {
+ assert(isUnaryOp() || isBinaryOp());
+ return Name[Name.size()-1];
+ }
+
+ std::string Name;
+ std::vector<std::string> Args;
+ bool IsOperator;
+ unsigned Precedence; // Precedence if a binary op.
+};
+
+/// FunctionAST - This class represents a function definition itself.
+struct FunctionAST {
+ FunctionAST(std::unique_ptr<PrototypeAST> Proto,
+ std::unique_ptr<ExprAST> Body)
+ : Proto(std::move(Proto)), Body(std::move(Body)) {}
+
+ Function *IRGen(IRGenContext &C) const;
+
+ std::unique_ptr<PrototypeAST> Proto;
+ std::unique_ptr<ExprAST> Body;
+};
+
+//===----------------------------------------------------------------------===//
+// Parser
+//===----------------------------------------------------------------------===//
+
+/// CurTok/getNextToken - Provide a simple token buffer. CurTok is the current
+/// token the parser is looking at. getNextToken reads another token from the
+/// lexer and updates CurTok with its results.
+static int CurTok;
+static int getNextToken() {
+ return CurTok = gettok();
+}
+
+/// BinopPrecedence - This holds the precedence for each binary operator that is
+/// defined.
+static std::map<char, int> BinopPrecedence;
+
+/// GetTokPrecedence - Get the precedence of the pending binary operator token.
+static int GetTokPrecedence() {
+ if (!isascii(CurTok))
+ return -1;
+
+ // Make sure it's a declared binop.
+ int TokPrec = BinopPrecedence[CurTok];
+ if (TokPrec <= 0) return -1;
+ return TokPrec;
+}
+
+template <typename T>
+std::unique_ptr<T> ErrorU(const std::string &Str) {
+ std::cerr << "Error: " << Str << "\n";
+ return nullptr;
+}
+
+template <typename T>
+T* ErrorP(const std::string &Str) {
+ std::cerr << "Error: " << Str << "\n";
+ return nullptr;
+}
+
+static std::unique_ptr<ExprAST> ParseExpression();
+
+/// identifierexpr
+/// ::= identifier
+/// ::= identifier '(' expression* ')'
+static std::unique_ptr<ExprAST> ParseIdentifierExpr() {
+ std::string IdName = IdentifierStr;
+
+ getNextToken(); // eat identifier.
+
+ if (CurTok != '(') // Simple variable ref.
+ return llvm::make_unique<VariableExprAST>(IdName);
+
+ // Call.
+ getNextToken(); // eat (
+ std::vector<std::unique_ptr<ExprAST>> Args;
+ if (CurTok != ')') {
+ while (1) {
+ auto Arg = ParseExpression();
+ if (!Arg) return nullptr;
+ Args.push_back(std::move(Arg));
+
+ if (CurTok == ')') break;
+
+ if (CurTok != ',')
+ return ErrorU<CallExprAST>("Expected ')' or ',' in argument list");
+ getNextToken();
+ }
+ }
+
+ // Eat the ')'.
+ getNextToken();
+
+ return llvm::make_unique<CallExprAST>(IdName, std::move(Args));
+}
+
+/// numberexpr ::= number
+static std::unique_ptr<NumberExprAST> ParseNumberExpr() {
+ auto Result = llvm::make_unique<NumberExprAST>(NumVal);
+ getNextToken(); // consume the number
+ return Result;
+}
+
+/// parenexpr ::= '(' expression ')'
+static std::unique_ptr<ExprAST> ParseParenExpr() {
+ getNextToken(); // eat (.
+ auto V = ParseExpression();
+ if (!V)
+ return nullptr;
+
+ if (CurTok != ')')
+ return ErrorU<ExprAST>("expected ')'");
+ getNextToken(); // eat ).
+ return V;
+}
+
+/// ifexpr ::= 'if' expression 'then' expression 'else' expression
+static std::unique_ptr<ExprAST> ParseIfExpr() {
+ getNextToken(); // eat the if.
+
+ // condition.
+ auto Cond = ParseExpression();
+ if (!Cond)
+ return nullptr;
+
+ if (CurTok != tok_then)
+ return ErrorU<ExprAST>("expected then");
+ getNextToken(); // eat the then
+
+ auto Then = ParseExpression();
+ if (!Then)
+ return nullptr;
+
+ if (CurTok != tok_else)
+ return ErrorU<ExprAST>("expected else");
+
+ getNextToken();
+
+ auto Else = ParseExpression();
+ if (!Else)
+ return nullptr;
+
+ return llvm::make_unique<IfExprAST>(std::move(Cond), std::move(Then),
+ std::move(Else));
+}
+
+/// forexpr ::= 'for' identifier '=' expr ',' expr (',' expr)? 'in' expression
+static std::unique_ptr<ForExprAST> ParseForExpr() {
+ getNextToken(); // eat the for.
+
+ if (CurTok != tok_identifier)
+ return ErrorU<ForExprAST>("expected identifier after for");
+
+ std::string IdName = IdentifierStr;
+ getNextToken(); // eat identifier.
+
+ if (CurTok != '=')
+ return ErrorU<ForExprAST>("expected '=' after for");
+ getNextToken(); // eat '='.
+
+
+ auto Start = ParseExpression();
+ if (!Start)
+ return nullptr;
+ if (CurTok != ',')
+ return ErrorU<ForExprAST>("expected ',' after for start value");
+ getNextToken();
+
+ auto End = ParseExpression();
+ if (!End)
+ return nullptr;
+
+ // The step value is optional.
+ std::unique_ptr<ExprAST> Step;
+ if (CurTok == ',') {
+ getNextToken();
+ Step = ParseExpression();
+ if (!Step)
+ return nullptr;
+ }
+
+ if (CurTok != tok_in)
+ return ErrorU<ForExprAST>("expected 'in' after for");
+ getNextToken(); // eat 'in'.
+
+ auto Body = ParseExpression();
+ if (Body)
+ return nullptr;
+
+ return llvm::make_unique<ForExprAST>(IdName, std::move(Start), std::move(End),
+ std::move(Step), std::move(Body));
+}
+
+/// varexpr ::= 'var' identifier ('=' expression)?
+// (',' identifier ('=' expression)?)* 'in' expression
+static std::unique_ptr<VarExprAST> ParseVarExpr() {
+ getNextToken(); // eat the var.
+
+ VarExprAST::BindingList VarBindings;
+
+ // At least one variable name is required.
+ if (CurTok != tok_identifier)
+ return ErrorU<VarExprAST>("expected identifier after var");
+
+ while (1) {
+ std::string Name = IdentifierStr;
+ getNextToken(); // eat identifier.
+
+ // Read the optional initializer.
+ std::unique_ptr<ExprAST> Init;
+ if (CurTok == '=') {
+ getNextToken(); // eat the '='.
+
+ Init = ParseExpression();
+ if (!Init)
+ return nullptr;
+ }
+
+ VarBindings.push_back(VarExprAST::Binding(Name, std::move(Init)));
+
+ // End of var list, exit loop.
+ if (CurTok != ',') break;
+ getNextToken(); // eat the ','.
+
+ if (CurTok != tok_identifier)
+ return ErrorU<VarExprAST>("expected identifier list after var");
+ }
+
+ // At this point, we have to have 'in'.
+ if (CurTok != tok_in)
+ return ErrorU<VarExprAST>("expected 'in' keyword after 'var'");
+ getNextToken(); // eat 'in'.
+
+ auto Body = ParseExpression();
+ if (!Body)
+ return nullptr;
+
+ return llvm::make_unique<VarExprAST>(std::move(VarBindings), std::move(Body));
+}
+
+/// primary
+/// ::= identifierexpr
+/// ::= numberexpr
+/// ::= parenexpr
+/// ::= ifexpr
+/// ::= forexpr
+/// ::= varexpr
+static std::unique_ptr<ExprAST> ParsePrimary() {
+ switch (CurTok) {
+ default: return ErrorU<ExprAST>("unknown token when expecting an expression");
+ case tok_identifier: return ParseIdentifierExpr();
+ case tok_number: return ParseNumberExpr();
+ case '(': return ParseParenExpr();
+ case tok_if: return ParseIfExpr();
+ case tok_for: return ParseForExpr();
+ case tok_var: return ParseVarExpr();
+ }
+}
+
+/// unary
+/// ::= primary
+/// ::= '!' unary
+static std::unique_ptr<ExprAST> ParseUnary() {
+ // If the current token is not an operator, it must be a primary expr.
+ if (!isascii(CurTok) || CurTok == '(' || CurTok == ',')
+ return ParsePrimary();
+
+ // If this is a unary operator, read it.
+ int Opc = CurTok;
+ getNextToken();
+ if (auto Operand = ParseUnary())
+ return llvm::make_unique<UnaryExprAST>(Opc, std::move(Operand));
+ return nullptr;
+}
+
+/// binoprhs
+/// ::= ('+' unary)*
+static std::unique_ptr<ExprAST> ParseBinOpRHS(int ExprPrec,
+ std::unique_ptr<ExprAST> LHS) {
+ // If this is a binop, find its precedence.
+ while (1) {
+ int TokPrec = GetTokPrecedence();
+
+ // If this is a binop that binds at least as tightly as the current binop,
+ // consume it, otherwise we are done.
+ if (TokPrec < ExprPrec)
+ return LHS;
+
+ // Okay, we know this is a binop.
+ int BinOp = CurTok;
+ getNextToken(); // eat binop
+
+ // Parse the unary expression after the binary operator.
+ auto RHS = ParseUnary();
+ if (!RHS)
+ return nullptr;
+
+ // If BinOp binds less tightly with RHS than the operator after RHS, let
+ // the pending operator take RHS as its LHS.
+ int NextPrec = GetTokPrecedence();
+ if (TokPrec < NextPrec) {
+ RHS = ParseBinOpRHS(TokPrec+1, std::move(RHS));
+ if (!RHS)
+ return nullptr;
+ }
+
+ // Merge LHS/RHS.
+ LHS = llvm::make_unique<BinaryExprAST>(BinOp, std::move(LHS), std::move(RHS));
+ }
+}
+
+/// expression
+/// ::= unary binoprhs
+///
+static std::unique_ptr<ExprAST> ParseExpression() {
+ auto LHS = ParseUnary();
+ if (!LHS)
+ return nullptr;
+
+ return ParseBinOpRHS(0, std::move(LHS));
+}
+
+/// prototype
+/// ::= id '(' id* ')'
+/// ::= binary LETTER number? (id, id)
+/// ::= unary LETTER (id)
+static std::unique_ptr<PrototypeAST> ParsePrototype() {
+ std::string FnName;
+
+ unsigned Kind = 0; // 0 = identifier, 1 = unary, 2 = binary.
+ unsigned BinaryPrecedence = 30;
+
+ switch (CurTok) {
+ default:
+ return ErrorU<PrototypeAST>("Expected function name in prototype");
+ case tok_identifier:
+ FnName = IdentifierStr;
+ Kind = 0;
+ getNextToken();
+ break;
+ case tok_unary:
+ getNextToken();
+ if (!isascii(CurTok))
+ return ErrorU<PrototypeAST>("Expected unary operator");
+ FnName = "unary";
+ FnName += (char)CurTok;
+ Kind = 1;
+ getNextToken();
+ break;
+ case tok_binary:
+ getNextToken();
+ if (!isascii(CurTok))
+ return ErrorU<PrototypeAST>("Expected binary operator");
+ FnName = "binary";
+ FnName += (char)CurTok;
+ Kind = 2;
+ getNextToken();
+
+ // Read the precedence if present.
+ if (CurTok == tok_number) {
+ if (NumVal < 1 || NumVal > 100)
+ return ErrorU<PrototypeAST>("Invalid precedecnce: must be 1..100");
+ BinaryPrecedence = (unsigned)NumVal;
+ getNextToken();
+ }
+ break;
+ }
+
+ if (CurTok != '(')
+ return ErrorU<PrototypeAST>("Expected '(' in prototype");
+
+ std::vector<std::string> ArgNames;
+ while (getNextToken() == tok_identifier)
+ ArgNames.push_back(IdentifierStr);
+ if (CurTok != ')')
+ return ErrorU<PrototypeAST>("Expected ')' in prototype");
+
+ // success.
+ getNextToken(); // eat ')'.
+
+ // Verify right number of names for operator.
+ if (Kind && ArgNames.size() != Kind)
+ return ErrorU<PrototypeAST>("Invalid number of operands for operator");
+
+ return llvm::make_unique<PrototypeAST>(FnName, std::move(ArgNames), Kind != 0,
+ BinaryPrecedence);
+}
+
+/// definition ::= 'def' prototype expression
+static std::unique_ptr<FunctionAST> ParseDefinition() {
+ getNextToken(); // eat def.
+ auto Proto = ParsePrototype();
+ if (!Proto)
+ return nullptr;
+
+ if (auto Body = ParseExpression())
+ return llvm::make_unique<FunctionAST>(std::move(Proto), std::move(Body));
+ return nullptr;
+}
+
+/// toplevelexpr ::= expression
+static std::unique_ptr<FunctionAST> ParseTopLevelExpr() {
+ if (auto E = ParseExpression()) {
+ // Make an anonymous proto.
+ auto Proto =
+ llvm::make_unique<PrototypeAST>("__anon_expr", std::vector<std::string>());
+ return llvm::make_unique<FunctionAST>(std::move(Proto), std::move(E));
+ }
+ return nullptr;
+}
+
+/// external ::= 'extern' prototype
+static std::unique_ptr<PrototypeAST> ParseExtern() {
+ getNextToken(); // eat extern.
+ return ParsePrototype();
+}
+
+//===----------------------------------------------------------------------===//
+// Code Generation
+//===----------------------------------------------------------------------===//
+
+// FIXME: Obviously we can do better than this
+std::string GenerateUniqueName(const std::string &Root) {
+ static int i = 0;
+ std::ostringstream NameStream;
+ NameStream << Root << ++i;
+ return NameStream.str();
+}
+
+std::string MakeLegalFunctionName(std::string Name)
+{
+ std::string NewName;
+ assert(!Name.empty() && "Base name must not be empty");
+
+ // Start with what we have
+ NewName = Name;
+
+ // Look for a numberic first character
+ if (NewName.find_first_of("0123456789") == 0) {
+ NewName.insert(0, 1, 'n');
+ }
+
+ // Replace illegal characters with their ASCII equivalent
+ std::string legal_elements = "_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+ size_t pos;
+ while ((pos = NewName.find_first_not_of(legal_elements)) != std::string::npos) {
+ std::ostringstream NumStream;
+ NumStream << (int)NewName.at(pos);
+ NewName = NewName.replace(pos, 1, NumStream.str());
+ }
+
+ return NewName;
+}
+
+class SessionContext {
+public:
+ SessionContext(LLVMContext &C)
+ : Context(C), TM(EngineBuilder().selectTarget()) {}
+ LLVMContext& getLLVMContext() const { return Context; }
+ TargetMachine& getTarget() { return *TM; }
+ void addPrototypeAST(std::unique_ptr<PrototypeAST> P);
+ PrototypeAST* getPrototypeAST(const std::string &Name);
+private:
+ typedef std::map<std::string, std::unique_ptr<PrototypeAST>> PrototypeMap;
+
+ LLVMContext &Context;
+ std::unique_ptr<TargetMachine> TM;
+
+ PrototypeMap Prototypes;
+};
+
+void SessionContext::addPrototypeAST(std::unique_ptr<PrototypeAST> P) {
+ Prototypes[P->Name] = std::move(P);
+}
+
+PrototypeAST* SessionContext::getPrototypeAST(const std::string &Name) {
+ PrototypeMap::iterator I = Prototypes.find(Name);
+ if (I != Prototypes.end())
+ return I->second.get();
+ return nullptr;
+}
+
+class IRGenContext {
+public:
+
+ IRGenContext(SessionContext &S)
+ : Session(S),
+ M(new Module(GenerateUniqueName("jit_module_"),
+ Session.getLLVMContext())),
+ Builder(Session.getLLVMContext()) {
+ M->setDataLayout(Session.getTarget().getDataLayout());
+ }
+
+ SessionContext& getSession() { return Session; }
+ Module& getM() const { return *M; }
+ std::unique_ptr<Module> takeM() { return std::move(M); }
+ IRBuilder<>& getBuilder() { return Builder; }
+ LLVMContext& getLLVMContext() { return Session.getLLVMContext(); }
+ Function* getPrototype(const std::string &Name);
+
+ std::map<std::string, AllocaInst*> NamedValues;
+private:
+ SessionContext &Session;
+ std::unique_ptr<Module> M;
+ IRBuilder<> Builder;
+};
+
+Function* IRGenContext::getPrototype(const std::string &Name) {
+ if (Function *ExistingProto = M->getFunction(Name))
+ return ExistingProto;
+ if (PrototypeAST *ProtoAST = Session.getPrototypeAST(Name))
+ return ProtoAST->IRGen(*this);
+ return nullptr;
+}
+
+/// CreateEntryBlockAlloca - Create an alloca instruction in the entry block of
+/// the function. This is used for mutable variables etc.
+static AllocaInst *CreateEntryBlockAlloca(Function *TheFunction,
+ const std::string &VarName) {
+ IRBuilder<> TmpB(&TheFunction->getEntryBlock(),
+ TheFunction->getEntryBlock().begin());
+ return TmpB.CreateAlloca(Type::getDoubleTy(getGlobalContext()), 0,
+ VarName.c_str());
+}
+
+Value *NumberExprAST::IRGen(IRGenContext &C) const {
+ return ConstantFP::get(C.getLLVMContext(), APFloat(Val));
+}
+
+Value *VariableExprAST::IRGen(IRGenContext &C) const {
+ // Look this variable up in the function.
+ Value *V = C.NamedValues[Name];
+
+ if (V == 0)
+ return ErrorP<Value>("Unknown variable name '" + Name + "'");
+
+ // Load the value.
+ return C.getBuilder().CreateLoad(V, Name.c_str());
+}
+
+Value *UnaryExprAST::IRGen(IRGenContext &C) const {
+ if (Value *OperandV = Operand->IRGen(C)) {
+ std::string FnName = MakeLegalFunctionName(std::string("unary")+Opcode);
+ if (Function *F = C.getPrototype(FnName))
+ return C.getBuilder().CreateCall(F, OperandV, "unop");
+ return ErrorP<Value>("Unknown unary operator");
+ }
+
+ // Could not codegen operand - return null.
+ return nullptr;
+}
+
+Value *BinaryExprAST::IRGen(IRGenContext &C) const {
+ // Special case '=' because we don't want to emit the LHS as an expression.
+ if (Op == '=') {
+ // Assignment requires the LHS to be an identifier.
+ auto LHSVar = static_cast<VariableExprAST&>(*LHS);
+ // Codegen the RHS.
+ Value *Val = RHS->IRGen(C);
+ if (!Val) return nullptr;
+
+ // Look up the name.
+ if (auto Variable = C.NamedValues[LHSVar.Name]) {
+ C.getBuilder().CreateStore(Val, Variable);
+ return Val;
+ }
+ return ErrorP<Value>("Unknown variable name");
+ }
+
+ Value *L = LHS->IRGen(C);
+ Value *R = RHS->IRGen(C);
+ if (!L || !R) return nullptr;
+
+ switch (Op) {
+ case '+': return C.getBuilder().CreateFAdd(L, R, "addtmp");
+ case '-': return C.getBuilder().CreateFSub(L, R, "subtmp");
+ case '*': return C.getBuilder().CreateFMul(L, R, "multmp");
+ case '/': return C.getBuilder().CreateFDiv(L, R, "divtmp");
+ case '<':
+ L = C.getBuilder().CreateFCmpULT(L, R, "cmptmp");
+ // Convert bool 0/1 to double 0.0 or 1.0
+ return C.getBuilder().CreateUIToFP(L, Type::getDoubleTy(getGlobalContext()),
+ "booltmp");
+ default: break;
+ }
+
+ // If it wasn't a builtin binary operator, it must be a user defined one. Emit
+ // a call to it.
+ std::string FnName = MakeLegalFunctionName(std::string("binary")+Op);
+ if (Function *F = C.getPrototype(FnName)) {
+ Value *Ops[] = { L, R };
+ return C.getBuilder().CreateCall(F, Ops, "binop");
+ }
+
+ return ErrorP<Value>("Unknown binary operator");
+}
+
+Value *CallExprAST::IRGen(IRGenContext &C) const {
+ // Look up the name in the global module table.
+ if (auto CalleeF = C.getPrototype(CalleeName)) {
+ // If argument mismatch error.
+ if (CalleeF->arg_size() != Args.size())
+ return ErrorP<Value>("Incorrect # arguments passed");
+
+ std::vector<Value*> ArgsV;
+ for (unsigned i = 0, e = Args.size(); i != e; ++i) {
+ ArgsV.push_back(Args[i]->IRGen(C));
+ if (!ArgsV.back()) return nullptr;
+ }
+
+ return C.getBuilder().CreateCall(CalleeF, ArgsV, "calltmp");
+ }
+
+ return ErrorP<Value>("Unknown function referenced");
+}
+
+Value *IfExprAST::IRGen(IRGenContext &C) const {
+ Value *CondV = Cond->IRGen(C);
+ if (!CondV) return nullptr;
+
+ // Convert condition to a bool by comparing equal to 0.0.
+ ConstantFP *FPZero =
+ ConstantFP::get(C.getLLVMContext(), APFloat(0.0));
+ CondV = C.getBuilder().CreateFCmpONE(CondV, FPZero, "ifcond");
+
+ Function *TheFunction = C.getBuilder().GetInsertBlock()->getParent();
+
+ // Create blocks for the then and else cases. Insert the 'then' block at the
+ // end of the function.
+ BasicBlock *ThenBB = BasicBlock::Create(C.getLLVMContext(), "then", TheFunction);
+ BasicBlock *ElseBB = BasicBlock::Create(C.getLLVMContext(), "else");
+ BasicBlock *MergeBB = BasicBlock::Create(C.getLLVMContext(), "ifcont");
+
+ C.getBuilder().CreateCondBr(CondV, ThenBB, ElseBB);
+
+ // Emit then value.
+ C.getBuilder().SetInsertPoint(ThenBB);
+
+ Value *ThenV = Then->IRGen(C);
+ if (!ThenV) return nullptr;
+
+ C.getBuilder().CreateBr(MergeBB);
+ // Codegen of 'Then' can change the current block, update ThenBB for the PHI.
+ ThenBB = C.getBuilder().GetInsertBlock();
+
+ // Emit else block.
+ TheFunction->getBasicBlockList().push_back(ElseBB);
+ C.getBuilder().SetInsertPoint(ElseBB);
+
+ Value *ElseV = Else->IRGen(C);
+ if (!ElseV) return nullptr;
+
+ C.getBuilder().CreateBr(MergeBB);
+ // Codegen of 'Else' can change the current block, update ElseBB for the PHI.
+ ElseBB = C.getBuilder().GetInsertBlock();
+
+ // Emit merge block.
+ TheFunction->getBasicBlockList().push_back(MergeBB);
+ C.getBuilder().SetInsertPoint(MergeBB);
+ PHINode *PN = C.getBuilder().CreatePHI(Type::getDoubleTy(getGlobalContext()), 2,
+ "iftmp");
+
+ PN->addIncoming(ThenV, ThenBB);
+ PN->addIncoming(ElseV, ElseBB);
+ return PN;
+}
+
+Value *ForExprAST::IRGen(IRGenContext &C) const {
+ // Output this as:
+ // var = alloca double
+ // ...
+ // start = startexpr
+ // store start -> var
+ // goto loop
+ // loop:
+ // ...
+ // bodyexpr
+ // ...
+ // loopend:
+ // step = stepexpr
+ // endcond = endexpr
+ //
+ // curvar = load var
+ // nextvar = curvar + step
+ // store nextvar -> var
+ // br endcond, loop, endloop
+ // outloop:
+
+ Function *TheFunction = C.getBuilder().GetInsertBlock()->getParent();
+
+ // Create an alloca for the variable in the entry block.
+ AllocaInst *Alloca = CreateEntryBlockAlloca(TheFunction, VarName);
+
+ // Emit the start code first, without 'variable' in scope.
+ Value *StartVal = Start->IRGen(C);
+ if (!StartVal) return nullptr;
+
+ // Store the value into the alloca.
+ C.getBuilder().CreateStore(StartVal, Alloca);
+
+ // Make the new basic block for the loop header, inserting after current
+ // block.
+ BasicBlock *LoopBB = BasicBlock::Create(getGlobalContext(), "loop", TheFunction);
+
+ // Insert an explicit fall through from the current block to the LoopBB.
+ C.getBuilder().CreateBr(LoopBB);
+
+ // Start insertion in LoopBB.
+ C.getBuilder().SetInsertPoint(LoopBB);
+
+ // Within the loop, the variable is defined equal to the PHI node. If it
+ // shadows an existing variable, we have to restore it, so save it now.
+ AllocaInst *OldVal = C.NamedValues[VarName];
+ C.NamedValues[VarName] = Alloca;
+
+ // Emit the body of the loop. This, like any other expr, can change the
+ // current BB. Note that we ignore the value computed by the body, but don't
+ // allow an error.
+ if (!Body->IRGen(C))
+ return nullptr;
+
+ // Emit the step value.
+ Value *StepVal;
+ if (Step) {
+ StepVal = Step->IRGen(C);
+ if (!StepVal) return nullptr;
+ } else {
+ // If not specified, use 1.0.
+ StepVal = ConstantFP::get(getGlobalContext(), APFloat(1.0));
+ }
+
+ // Compute the end condition.
+ Value *EndCond = End->IRGen(C);
+ if (EndCond == 0) return EndCond;
+
+ // Reload, increment, and restore the alloca. This handles the case where
+ // the body of the loop mutates the variable.
+ Value *CurVar = C.getBuilder().CreateLoad(Alloca, VarName.c_str());
+ Value *NextVar = C.getBuilder().CreateFAdd(CurVar, StepVal, "nextvar");
+ C.getBuilder().CreateStore(NextVar, Alloca);
+
+ // Convert condition to a bool by comparing equal to 0.0.
+ EndCond = C.getBuilder().CreateFCmpONE(EndCond,
+ ConstantFP::get(getGlobalContext(), APFloat(0.0)),
+ "loopcond");
+
+ // Create the "after loop" block and insert it.
+ BasicBlock *AfterBB = BasicBlock::Create(getGlobalContext(), "afterloop", TheFunction);
+
+ // Insert the conditional branch into the end of LoopEndBB.
+ C.getBuilder().CreateCondBr(EndCond, LoopBB, AfterBB);
+
+ // Any new code will be inserted in AfterBB.
+ C.getBuilder().SetInsertPoint(AfterBB);
+
+ // Restore the unshadowed variable.
+ if (OldVal)
+ C.NamedValues[VarName] = OldVal;
+ else
+ C.NamedValues.erase(VarName);
+
+
+ // for expr always returns 0.0.
+ return Constant::getNullValue(Type::getDoubleTy(getGlobalContext()));
+}
+
+Value *VarExprAST::IRGen(IRGenContext &C) const {
+ std::vector<AllocaInst *> OldBindings;
+
+ Function *TheFunction = C.getBuilder().GetInsertBlock()->getParent();
+
+ // Register all variables and emit their initializer.
+ for (unsigned i = 0, e = VarBindings.size(); i != e; ++i) {
+ auto &VarName = VarBindings[i].first;
+ auto &Init = VarBindings[i].second;
+
+ // Emit the initializer before adding the variable to scope, this prevents
+ // the initializer from referencing the variable itself, and permits stuff
+ // like this:
+ // var a = 1 in
+ // var a = a in ... # refers to outer 'a'.
+ Value *InitVal;
+ if (Init) {
+ InitVal = Init->IRGen(C);
+ if (!InitVal) return nullptr;
+ } else // If not specified, use 0.0.
+ InitVal = ConstantFP::get(getGlobalContext(), APFloat(0.0));
+
+ AllocaInst *Alloca = CreateEntryBlockAlloca(TheFunction, VarName);
+ C.getBuilder().CreateStore(InitVal, Alloca);
+
+ // Remember the old variable binding so that we can restore the binding when
+ // we unrecurse.
+ OldBindings.push_back(C.NamedValues[VarName]);
+
+ // Remember this binding.
+ C.NamedValues[VarName] = Alloca;
+ }
+
+ // Codegen the body, now that all vars are in scope.
+ Value *BodyVal = Body->IRGen(C);
+ if (!BodyVal) return nullptr;
+
+ // Pop all our variables from scope.
+ for (unsigned i = 0, e = VarBindings.size(); i != e; ++i)
+ C.NamedValues[VarBindings[i].first] = OldBindings[i];
+
+ // Return the body computation.
+ return BodyVal;
+}
+
+Function *PrototypeAST::IRGen(IRGenContext &C) const {
+ std::string FnName = MakeLegalFunctionName(Name);
+
+ // Make the function type: double(double,double) etc.
+ std::vector<Type*> Doubles(Args.size(),
+ Type::getDoubleTy(getGlobalContext()));
+ FunctionType *FT = FunctionType::get(Type::getDoubleTy(getGlobalContext()),
+ Doubles, false);
+ Function *F = Function::Create(FT, Function::ExternalLinkage, FnName,
+ &C.getM());
+
+ // If F conflicted, there was already something named 'FnName'. If it has a
+ // body, don't allow redefinition or reextern.
+ if (F->getName() != FnName) {
+ // Delete the one we just made and get the existing one.
+ F->eraseFromParent();
+ F = C.getM().getFunction(Name);
+
+ // If F already has a body, reject this.
+ if (!F->empty()) {
+ ErrorP<Function>("redefinition of function");
+ return nullptr;
+ }
+
+ // If F took a different number of args, reject.
+ if (F->arg_size() != Args.size()) {
+ ErrorP<Function>("redefinition of function with different # args");
+ return nullptr;
+ }
+ }
+
+ // Set names for all arguments.
+ unsigned Idx = 0;
+ for (Function::arg_iterator AI = F->arg_begin(); Idx != Args.size();
+ ++AI, ++Idx)
+ AI->setName(Args[Idx]);
+
+ return F;
+}
+
+/// CreateArgumentAllocas - Create an alloca for each argument and register the
+/// argument in the symbol table so that references to it will succeed.
+void PrototypeAST::CreateArgumentAllocas(Function *F, IRGenContext &C) {
+ Function::arg_iterator AI = F->arg_begin();
+ for (unsigned Idx = 0, e = Args.size(); Idx != e; ++Idx, ++AI) {
+ // Create an alloca for this variable.
+ AllocaInst *Alloca = CreateEntryBlockAlloca(F, Args[Idx]);
+
+ // Store the initial value into the alloca.
+ C.getBuilder().CreateStore(AI, Alloca);
+
+ // Add arguments to variable symbol table.
+ C.NamedValues[Args[Idx]] = Alloca;
+ }
+}
+
+Function *FunctionAST::IRGen(IRGenContext &C) const {
+ C.NamedValues.clear();
+
+ Function *TheFunction = Proto->IRGen(C);
+ if (!TheFunction)
+ return nullptr;
+
+ // If this is an operator, install it.
+ if (Proto->isBinaryOp())
+ BinopPrecedence[Proto->getOperatorName()] = Proto->Precedence;
+
+ // Create a new basic block to start insertion into.
+ BasicBlock *BB = BasicBlock::Create(getGlobalContext(), "entry", TheFunction);
+ C.getBuilder().SetInsertPoint(BB);
+
+ // Add all arguments to the symbol table and create their allocas.
+ Proto->CreateArgumentAllocas(TheFunction, C);
+
+ if (Value *RetVal = Body->IRGen(C)) {
+ // Finish off the function.
+ C.getBuilder().CreateRet(RetVal);
+
+ // Validate the generated code, checking for consistency.
+ verifyFunction(*TheFunction);
+
+ return TheFunction;
+ }
+
+ // Error reading body, remove function.
+ TheFunction->eraseFromParent();
+
+ if (Proto->isBinaryOp())
+ BinopPrecedence.erase(Proto->getOperatorName());
+ return nullptr;
+}
+
+//===----------------------------------------------------------------------===//
+// Top-Level parsing and JIT Driver
+//===----------------------------------------------------------------------===//
+
+static std::unique_ptr<llvm::Module> IRGen(SessionContext &S,
+ const FunctionAST &F) {
+ IRGenContext C(S);
+ auto LF = F.IRGen(C);
+ if (!LF)
+ return nullptr;
+#ifndef MINIMAL_STDERR_OUTPUT
+ fprintf(stderr, "Read function definition:");
+ LF->dump();
+#endif
+ return C.takeM();
+}
+
+template <typename T>
+static std::vector<T> singletonSet(T t) {
+ std::vector<T> Vec;
+ Vec.push_back(std::move(t));
+ return Vec;
+}
+
+class KaleidoscopeJIT {
+public:
+ typedef ObjectLinkingLayer<> ObjLayerT;
+ typedef IRCompileLayer<ObjLayerT> CompileLayerT;
+ typedef LazyEmittingLayer<CompileLayerT> LazyEmitLayerT;
+ typedef LazyEmitLayerT::ModuleSetHandleT ModuleHandleT;
+
+ KaleidoscopeJIT(SessionContext &Session)
+ : Session(Session),
+ Mang(Session.getTarget().getDataLayout()),
+ CompileLayer(ObjectLayer, SimpleCompiler(Session.getTarget())),
+ LazyEmitLayer(CompileLayer) {}
+
+ std::string mangle(const std::string &Name) {
+ std::string MangledName;
+ {
+ raw_string_ostream MangledNameStream(MangledName);
+ Mang.getNameWithPrefix(MangledNameStream, Name);
+ }
+ return MangledName;
+ }
+
+ void addFunctionDefinition(std::unique_ptr<FunctionAST> FnAST) {
+ FunctionDefs[mangle(FnAST->Proto->Name)] = std::move(FnAST);
+ }
+
+ ModuleHandleT addModule(std::unique_ptr<Module> M) {
+ // We need a memory manager to allocate memory and resolve symbols for this
+ // new module. Create one that resolves symbols by looking back into the
+ // JIT.
+ auto MM = createLookasideRTDyldMM<SectionMemoryManager>(
+ [&](const std::string &Name) {
+ // First try to find 'Name' within the JIT.
+ if (auto Symbol = findSymbol(Name))
+ return Symbol.getAddress();
+
+ // If we don't already have a definition of 'Name' then search
+ // the ASTs.
+ return searchUncompiledASTs(Name);
+ },
+ [](const std::string &S) { return 0; } );
+
+ return LazyEmitLayer.addModuleSet(singletonSet(std::move(M)),
+ std::move(MM));
+ }
+
+ void removeModule(ModuleHandleT H) { LazyEmitLayer.removeModuleSet(H); }
+
+ JITSymbol findSymbol(const std::string &Name) {
+ return LazyEmitLayer.findSymbol(Name, true);
+ }
+
+ JITSymbol findSymbolIn(ModuleHandleT H, const std::string &Name) {
+ return LazyEmitLayer.findSymbolIn(H, Name, true);
+ }
+
+ JITSymbol findUnmangledSymbol(const std::string &Name) {
+ return findSymbol(mangle(Name));
+ }
+
+private:
+
+ // This method searches the FunctionDefs map for a definition of 'Name'. If it
+ // finds one it generates a stub for it and returns the address of the stub.
+ TargetAddress searchUncompiledASTs(const std::string &Name) {
+ auto DefI = FunctionDefs.find(Name);
+ if (DefI == FunctionDefs.end())
+ return 0;
+
+ // We have AST for 'Name'. IRGen it, add it to the JIT, and
+ // return the address for it.
+ // FIXME: What happens if IRGen fails?
+ auto H = addModule(IRGen(Session, *DefI->second));
+
+ // Remove the function definition's AST now that we're
+ // finished with it.
+ FunctionDefs.erase(DefI);
+
+ // Return the address of the function.
+ return findSymbolIn(H, Name).getAddress();
+ }
+
+ SessionContext &Session;
+ Mangler Mang;
+ ObjLayerT ObjectLayer;
+ CompileLayerT CompileLayer;
+ LazyEmitLayerT LazyEmitLayer;
+
+ std::map<std::string, std::unique_ptr<FunctionAST>> FunctionDefs;
+};
+
+static void HandleDefinition(SessionContext &S, KaleidoscopeJIT &J) {
+ if (auto F = ParseDefinition()) {
+ S.addPrototypeAST(llvm::make_unique<PrototypeAST>(*F->Proto));
+ J.addFunctionDefinition(std::move(F));
+ } else {
+ // Skip token for error recovery.
+ getNextToken();
+ }
+}
+
+static void HandleExtern(SessionContext &S) {
+ if (auto P = ParseExtern())
+ S.addPrototypeAST(std::move(P));
+ else {
+ // Skip token for error recovery.
+ getNextToken();
+ }
+}
+
+static void HandleTopLevelExpression(SessionContext &S, KaleidoscopeJIT &J) {
+ // Evaluate a top-level expression into an anonymous function.
+ if (auto F = ParseTopLevelExpr()) {
+ IRGenContext C(S);
+ if (auto ExprFunc = F->IRGen(C)) {
+#ifndef MINIMAL_STDERR_OUTPUT
+ std::cerr << "Expression function:\n";
+ ExprFunc->dump();
+#endif
+ // Add the CodeGen'd module to the JIT. Keep a handle to it: We can remove
+ // this module as soon as we've executed Function ExprFunc.
+ auto H = J.addModule(C.takeM());
+
+ // Get the address of the JIT'd function in memory.
+ auto ExprSymbol = J.findUnmangledSymbol("__anon_expr");
+
+ // Cast it to the right type (takes no arguments, returns a double) so we
+ // can call it as a native function.
+ double (*FP)() = (double (*)())(intptr_t)ExprSymbol.getAddress();
+#ifdef MINIMAL_STDERR_OUTPUT
+ FP();
+#else
+ std::cerr << "Evaluated to " << FP() << "\n";
+#endif
+
+ // Remove the function.
+ J.removeModule(H);
+ }
+ } else {
+ // Skip token for error recovery.
+ getNextToken();
+ }
+}
+
+/// top ::= definition | external | expression | ';'
+static void MainLoop() {
+ SessionContext S(getGlobalContext());
+ KaleidoscopeJIT J(S);
+
+ while (1) {
+ switch (CurTok) {
+ case tok_eof: return;
+ case ';': getNextToken(); continue; // ignore top-level semicolons.
+ case tok_def: HandleDefinition(S, J); break;
+ case tok_extern: HandleExtern(S); break;
+ default: HandleTopLevelExpression(S, J); break;
+ }
+#ifndef MINIMAL_STDERR_OUTPUT
+ std::cerr << "ready> ";
+#endif
+ }
+}
+
+//===----------------------------------------------------------------------===//
+// "Library" functions that can be "extern'd" from user code.
+//===----------------------------------------------------------------------===//
+
+/// putchard - putchar that takes a double and returns 0.
+extern "C"
+double putchard(double X) {
+ putchar((char)X);
+ return 0;
+}
+
+/// printd - printf that takes a double prints it as "%f\n", returning 0.
+extern "C"
+double printd(double X) {
+ printf("%f", X);
+ return 0;
+}
+
+extern "C"
+double printlf() {
+ printf("\n");
+ return 0;
+}
+
+//===----------------------------------------------------------------------===//
+// Main driver code.
+//===----------------------------------------------------------------------===//
+
+int main() {
+ InitializeNativeTarget();
+ InitializeNativeTargetAsmPrinter();
+ InitializeNativeTargetAsmParser();
+
+ // Install standard binary operators.
+ // 1 is lowest precedence.
+ BinopPrecedence['='] = 2;
+ BinopPrecedence['<'] = 10;
+ BinopPrecedence['+'] = 20;
+ BinopPrecedence['-'] = 20;
+ BinopPrecedence['/'] = 40;
+ BinopPrecedence['*'] = 40; // highest.
+
+ // Prime the first token.
+#ifndef MINIMAL_STDERR_OUTPUT
+ std::cerr << "ready> ";
+#endif
+ getNextToken();
+
+ std::cerr << std::fixed;
+
+ // Run the main "interpreter loop" now.
+ MainLoop();
+
+ return 0;
+}
+