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-rw-r--r--unittests/Linker/LinkModulesTest.cpp131
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diff --git a/unittests/Linker/LinkModulesTest.cpp b/unittests/Linker/LinkModulesTest.cpp
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index 9d2d84d..0000000
--- a/unittests/Linker/LinkModulesTest.cpp
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-//===- llvm/unittest/Linker/LinkModulesTest.cpp - IRBuilder tests ---------===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/Linker.h"
-#include "llvm/IR/IRBuilder.h"
-#include "llvm/IR/BasicBlock.h"
-#include "llvm/IR/DataLayout.h"
-#include "llvm/IR/Function.h"
-#include "llvm/IR/Module.h"
-#include "gtest/gtest.h"
-
-using namespace llvm;
-
-namespace {
-
-class LinkModuleTest : public testing::Test {
-protected:
- virtual void SetUp() {
- LLVMContext &Ctx = getGlobalContext();
- M.reset(new Module("MyModule", Ctx));
- FunctionType *FTy = FunctionType::get(Type::getInt8PtrTy(Ctx),
- Type::getInt32Ty(Ctx),
- false /*=isVarArg*/);
- F = Function::Create(FTy, Function::ExternalLinkage, "ba_func", M.get());
- F->setCallingConv(CallingConv::C);
-
- EntryBB = BasicBlock::Create(Ctx, "entry", F);
- SwitchCase1BB = BasicBlock::Create(Ctx, "switch.case.1", F);
- SwitchCase2BB = BasicBlock::Create(Ctx, "switch.case.2", F);
- ExitBB = BasicBlock::Create(Ctx, "exit", F);
-
- ArrayType *AT = ArrayType::get(Type::getInt8PtrTy(Ctx), 3);
-
- GV = new GlobalVariable(*M.get(), AT, false /*=isConstant*/,
- GlobalValue::InternalLinkage,
- 0, "switch.bas");
-
-
- // Global Initializer
- std::vector<Constant*> Init;
- Constant *SwitchCase1BA = BlockAddress::get(SwitchCase1BB);
- Init.push_back(SwitchCase1BA);
-
- Constant *SwitchCase2BA = BlockAddress::get(SwitchCase2BB);
- Init.push_back(SwitchCase2BA);
-
- ConstantInt *One = ConstantInt::get(Type::getInt32Ty(Ctx), 1);
- Constant *OnePtr = ConstantExpr::getCast(Instruction::IntToPtr,
- One, Type::getInt8PtrTy(Ctx));
- Init.push_back(OnePtr);
-
- GV->setInitializer(ConstantArray::get(AT, Init));
- }
-
- virtual void TearDown() {
- M.reset();
- }
-
- OwningPtr<Module> M;
- Function *F;
- GlobalVariable *GV;
- BasicBlock *EntryBB;
- BasicBlock *SwitchCase1BB;
- BasicBlock *SwitchCase2BB;
- BasicBlock *ExitBB;
-};
-
-TEST_F(LinkModuleTest, BlockAddress) {
- LLVMContext &Ctx = getGlobalContext();
- IRBuilder<> Builder(EntryBB);
-
- std::vector<Value*> GEPIndices;
- GEPIndices.push_back(ConstantInt::get(Type::getInt32Ty(Ctx), 0));
- GEPIndices.push_back(F->arg_begin());
-
- Value *GEP = Builder.CreateGEP(GV, GEPIndices, "switch.gep");
- Value *Load = Builder.CreateLoad(GEP, "switch.load");
-
- Builder.CreateRet(Load);
-
- Builder.SetInsertPoint(SwitchCase1BB);
- Builder.CreateBr(ExitBB);
-
- Builder.SetInsertPoint(SwitchCase2BB);
- Builder.CreateBr(ExitBB);
-
- Builder.SetInsertPoint(ExitBB);
- Builder.CreateRet(ConstantPointerNull::get(Type::getInt8PtrTy(Ctx)));
-
- Module *LinkedModule = new Module("MyModuleLinked", getGlobalContext());
- Linker::LinkModules(LinkedModule, M.get(), Linker::PreserveSource, 0);
-
- // Delete the original module.
- M.reset();
-
- // Check that the global "@switch.bas" is well-formed.
- const GlobalVariable *LinkedGV = LinkedModule->getNamedGlobal("switch.bas");
- const Constant *Init = LinkedGV->getInitializer();
-
- // @switch.bas = internal global [3 x i8*]
- // [i8* blockaddress(@ba_func, %switch.case.1),
- // i8* blockaddress(@ba_func, %switch.case.2),
- // i8* inttoptr (i32 1 to i8*)]
-
- ArrayType *AT = ArrayType::get(Type::getInt8PtrTy(Ctx), 3);
- EXPECT_EQ(AT, Init->getType());
-
- Value *Elem = Init->getOperand(0);
- ASSERT_TRUE(isa<BlockAddress>(Elem));
- EXPECT_EQ(cast<BlockAddress>(Elem)->getFunction(),
- LinkedModule->getFunction("ba_func"));
- EXPECT_EQ(cast<BlockAddress>(Elem)->getBasicBlock()->getParent(),
- LinkedModule->getFunction("ba_func"));
-
- Elem = Init->getOperand(1);
- ASSERT_TRUE(isa<BlockAddress>(Elem));
- EXPECT_EQ(cast<BlockAddress>(Elem)->getFunction(),
- LinkedModule->getFunction("ba_func"));
- EXPECT_EQ(cast<BlockAddress>(Elem)->getBasicBlock()->getParent(),
- LinkedModule->getFunction("ba_func"));
-
- delete LinkedModule;
-}
-
-} // end anonymous namespace