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//===- llvm/Support/DiagnosticInfo.cpp - Diagnostic Definitions -*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines the different classes involved in low level diagnostics.
//
// Diagnostics reporting is still done as part of the LLVMContext.
//===----------------------------------------------------------------------===//
#include "LLVMContextImpl.h"
#include "llvm/ADT/Twine.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DebugInfo.h"
#include "llvm/IR/DiagnosticInfo.h"
#include "llvm/IR/DiagnosticPrinter.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/Instruction.h"
#include "llvm/IR/Metadata.h"
#include "llvm/IR/Module.h"
#include "llvm/Support/Atomic.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Regex.h"
#include <string>
using namespace llvm;
namespace {
/// \brief Regular expression corresponding to the value given in one of the
/// -pass-remarks* command line flags. Passes whose name matches this regexp
/// will emit a diagnostic when calling the associated diagnostic function
/// (emitOptimizationRemark, emitOptimizationRemarkMissed or
/// emitOptimizationRemarkAnalysis).
struct PassRemarksOpt {
std::shared_ptr<Regex> Pattern;
void operator=(const std::string &Val) {
// Create a regexp object to match pass names for emitOptimizationRemark.
if (!Val.empty()) {
Pattern = std::make_shared<Regex>(Val);
std::string RegexError;
if (!Pattern->isValid(RegexError))
report_fatal_error("Invalid regular expression '" + Val +
"' in -pass-remarks: " + RegexError,
false);
}
};
};
static PassRemarksOpt PassRemarksOptLoc;
static PassRemarksOpt PassRemarksMissedOptLoc;
static PassRemarksOpt PassRemarksAnalysisOptLoc;
// -pass-remarks
// Command line flag to enable emitOptimizationRemark()
static cl::opt<PassRemarksOpt, true, cl::parser<std::string>>
PassRemarks("pass-remarks", cl::value_desc("pattern"),
cl::desc("Enable optimization remarks from passes whose name match "
"the given regular expression"),
cl::Hidden, cl::location(PassRemarksOptLoc), cl::ValueRequired,
cl::ZeroOrMore);
// -pass-remarks-missed
// Command line flag to enable emitOptimizationRemarkMissed()
static cl::opt<PassRemarksOpt, true, cl::parser<std::string>> PassRemarksMissed(
"pass-remarks-missed", cl::value_desc("pattern"),
cl::desc("Enable missed optimization remarks from passes whose name match "
"the given regular expression"),
cl::Hidden, cl::location(PassRemarksMissedOptLoc), cl::ValueRequired,
cl::ZeroOrMore);
// -pass-remarks-analysis
// Command line flag to enable emitOptimizationRemarkAnalysis()
static cl::opt<PassRemarksOpt, true, cl::parser<std::string>>
PassRemarksAnalysis(
"pass-remarks-analysis", cl::value_desc("pattern"),
cl::desc(
"Enable optimization analysis remarks from passes whose name match "
"the given regular expression"),
cl::Hidden, cl::location(PassRemarksAnalysisOptLoc), cl::ValueRequired,
cl::ZeroOrMore);
}
int llvm::getNextAvailablePluginDiagnosticKind() {
static sys::cas_flag PluginKindID = DK_FirstPluginKind;
return (int)sys::AtomicIncrement(&PluginKindID);
}
DiagnosticInfoInlineAsm::DiagnosticInfoInlineAsm(const Instruction &I,
const Twine &MsgStr,
DiagnosticSeverity Severity)
: DiagnosticInfo(DK_InlineAsm, Severity), LocCookie(0), MsgStr(MsgStr),
Instr(&I) {
if (const MDNode *SrcLoc = I.getMetadata("srcloc")) {
if (SrcLoc->getNumOperands() != 0)
if (const auto *CI =
mdconst::dyn_extract<ConstantInt>(SrcLoc->getOperand(0)))
LocCookie = CI->getZExtValue();
}
}
void DiagnosticInfoInlineAsm::print(DiagnosticPrinter &DP) const {
DP << getMsgStr();
if (getLocCookie())
DP << " at line " << getLocCookie();
}
void DiagnosticInfoStackSize::print(DiagnosticPrinter &DP) const {
DP << "stack size limit exceeded (" << getStackSize() << ") in "
<< getFunction();
}
void DiagnosticInfoDebugMetadataVersion::print(DiagnosticPrinter &DP) const {
DP << "ignoring debug info with an invalid version (" << getMetadataVersion()
<< ") in " << getModule();
}
void DiagnosticInfoSampleProfile::print(DiagnosticPrinter &DP) const {
if (getFileName() && getLineNum() > 0)
DP << getFileName() << ":" << getLineNum() << ": ";
else if (getFileName())
DP << getFileName() << ": ";
DP << getMsg();
}
bool DiagnosticInfoOptimizationBase::isLocationAvailable() const {
return getDebugLoc().isUnknown() == false;
}
void DiagnosticInfoOptimizationBase::getLocation(StringRef *Filename,
unsigned *Line,
unsigned *Column) const {
DILocation DIL(getDebugLoc().getAsMDNode(getFunction().getContext()));
*Filename = DIL.getFilename();
*Line = DIL.getLineNumber();
*Column = DIL.getColumnNumber();
}
const std::string DiagnosticInfoOptimizationBase::getLocationStr() const {
StringRef Filename("<unknown>");
unsigned Line = 0;
unsigned Column = 0;
if (isLocationAvailable())
getLocation(&Filename, &Line, &Column);
return Twine(Filename + ":" + Twine(Line) + ":" + Twine(Column)).str();
}
void DiagnosticInfoOptimizationBase::print(DiagnosticPrinter &DP) const {
DP << getLocationStr() << ": " << getMsg();
}
bool DiagnosticInfoOptimizationRemark::isEnabled() const {
return PassRemarksOptLoc.Pattern &&
PassRemarksOptLoc.Pattern->match(getPassName());
}
bool DiagnosticInfoOptimizationRemarkMissed::isEnabled() const {
return PassRemarksMissedOptLoc.Pattern &&
PassRemarksMissedOptLoc.Pattern->match(getPassName());
}
bool DiagnosticInfoOptimizationRemarkAnalysis::isEnabled() const {
return PassRemarksAnalysisOptLoc.Pattern &&
PassRemarksAnalysisOptLoc.Pattern->match(getPassName());
}
void llvm::emitOptimizationRemark(LLVMContext &Ctx, const char *PassName,
const Function &Fn, const DebugLoc &DLoc,
const Twine &Msg) {
Ctx.diagnose(DiagnosticInfoOptimizationRemark(PassName, Fn, DLoc, Msg));
}
void llvm::emitOptimizationRemarkMissed(LLVMContext &Ctx, const char *PassName,
const Function &Fn,
const DebugLoc &DLoc,
const Twine &Msg) {
Ctx.diagnose(DiagnosticInfoOptimizationRemarkMissed(PassName, Fn, DLoc, Msg));
}
void llvm::emitOptimizationRemarkAnalysis(LLVMContext &Ctx,
const char *PassName,
const Function &Fn,
const DebugLoc &DLoc,
const Twine &Msg) {
Ctx.diagnose(
DiagnosticInfoOptimizationRemarkAnalysis(PassName, Fn, DLoc, Msg));
}
bool DiagnosticInfoOptimizationFailure::isEnabled() const {
// Only print warnings.
return getSeverity() == DS_Warning;
}
void llvm::emitLoopVectorizeWarning(LLVMContext &Ctx, const Function &Fn,
const DebugLoc &DLoc, const Twine &Msg) {
Ctx.diagnose(DiagnosticInfoOptimizationFailure(
Fn, DLoc, Twine("loop not vectorized: " + Msg)));
}
void llvm::emitLoopInterleaveWarning(LLVMContext &Ctx, const Function &Fn,
const DebugLoc &DLoc, const Twine &Msg) {
Ctx.diagnose(DiagnosticInfoOptimizationFailure(
Fn, DLoc, Twine("loop not interleaved: " + Msg)));
}
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