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llvm-project/llvm/lib/IR/DiagnosticInfo.cpp

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//===- llvm/Support/DiagnosticInfo.cpp - Diagnostic Definitions -*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file defines the different classes involved in low level diagnostics.
//
// Diagnostics reporting is still done as part of the LLVMContext.
//===----------------------------------------------------------------------===//
#include "llvm/IR/DiagnosticInfo.h"
#include "LLVMContextImpl.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/ADT/Twine.h"
#include "llvm/ADT/iterator_range.h"
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DebugInfoMetadata.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/DiagnosticPrinter.h"
#include "llvm/IR/Function.h"
#include "llvm/IR/GlobalValue.h"
#include "llvm/IR/Instruction.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Metadata.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Type.h"
#include "llvm/IR/Value.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Path.h"
#include "llvm/Support/Regex.h"
#include "llvm/Support/ScopedPrinter.h"
#include "llvm/Support/raw_ostream.h"
#include <atomic>
#include <cassert>
#include <memory>
#include <string>
using namespace llvm;
cl::opt<bool> UseStringTable("remarks-yaml-string-table", cl::init(false));
int llvm::getNextAvailablePluginDiagnosticKind() {
static std::atomic<int> PluginKindID(DK_FirstPluginKind);
return ++PluginKindID;
}
const char *OptimizationRemarkAnalysis::AlwaysPrint = "";
DiagnosticInfoInlineAsm::DiagnosticInfoInlineAsm(const Instruction &I,
const Twine &MsgStr,
DiagnosticSeverity Severity)
: DiagnosticInfo(DK_InlineAsm, Severity), 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 DiagnosticInfoResourceLimit::print(DiagnosticPrinter &DP) const {
DP << getResourceName() << " limit";
if (getResourceLimit() != 0)
DP << " of " << getResourceLimit();
DP << " exceeded (" << getResourceSize() << ") in " << getFunction();
}
void DiagnosticInfoDebugMetadataVersion::print(DiagnosticPrinter &DP) const {
DP << "ignoring debug info with an invalid version (" << getMetadataVersion()
<< ") in " << getModule();
}
void DiagnosticInfoIgnoringInvalidDebugMetadata::print(
DiagnosticPrinter &DP) const {
DP << "ignoring invalid debug info in " << getModule().getModuleIdentifier();
}
void DiagnosticInfoSampleProfile::print(DiagnosticPrinter &DP) const {
if (!FileName.empty()) {
DP << getFileName();
if (LineNum > 0)
DP << ":" << getLineNum();
DP << ": ";
}
DP << getMsg();
}
void DiagnosticInfoPGOProfile::print(DiagnosticPrinter &DP) const {
if (getFileName())
DP << getFileName() << ": ";
DP << getMsg();
}
void DiagnosticInfo::anchor() {}
void DiagnosticInfoStackSize::anchor() {}
void DiagnosticInfoWithLocationBase::anchor() {}
void DiagnosticInfoIROptimization::anchor() {}
DiagnosticLocation::DiagnosticLocation(const DebugLoc &DL) {
if (!DL)
return;
File = DL->getFile();
Line = DL->getLine();
Column = DL->getColumn();
}
DiagnosticLocation::DiagnosticLocation(const DISubprogram *SP) {
if (!SP)
return;
File = SP->getFile();
Line = SP->getScopeLine();
Column = 0;
}
StringRef DiagnosticLocation::getRelativePath() const {
return File->getFilename();
}
std::string DiagnosticLocation::getAbsolutePath() const {
StringRef Name = File->getFilename();
if (sys::path::is_absolute(Name))
return Name;
SmallString<128> Path;
sys::path::append(Path, File->getDirectory(), Name);
return sys::path::remove_leading_dotslash(Path).str();
}
std::string DiagnosticInfoWithLocationBase::getAbsolutePath() const {
return Loc.getAbsolutePath();
}
void DiagnosticInfoWithLocationBase::getLocation(StringRef &RelativePath,
unsigned &Line,
unsigned &Column) const {
RelativePath = Loc.getRelativePath();
Line = Loc.getLine();
Column = Loc.getColumn();
}
const std::string DiagnosticInfoWithLocationBase::getLocationStr() const {
StringRef Filename("<unknown>");
unsigned Line = 0;
unsigned Column = 0;
if (isLocationAvailable())
getLocation(Filename, Line, Column);
return (Filename + ":" + Twine(Line) + ":" + Twine(Column)).str();
}
DiagnosticInfoOptimizationBase::Argument::Argument(StringRef Key, const Value *V)
: Key(Key) {
if (auto *F = dyn_cast<Function>(V)) {
if (DISubprogram *SP = F->getSubprogram())
Loc = SP;
}
else if (auto *I = dyn_cast<Instruction>(V))
Loc = I->getDebugLoc();
// Only include names that correspond to user variables. FIXME: We should use
// debug info if available to get the name of the user variable.
if (isa<llvm::Argument>(V) || isa<GlobalValue>(V))
Val = GlobalValue::dropLLVMManglingEscape(V->getName());
else if (isa<Constant>(V)) {
raw_string_ostream OS(Val);
V->printAsOperand(OS, /*PrintType=*/false);
} else if (auto *I = dyn_cast<Instruction>(V))
Val = I->getOpcodeName();
}
DiagnosticInfoOptimizationBase::Argument::Argument(StringRef Key, const Type *T)
: Key(Key) {
raw_string_ostream OS(Val);
OS << *T;
}
DiagnosticInfoOptimizationBase::Argument::Argument(StringRef Key, StringRef S)
: Key(Key), Val(S.str()) {}
DiagnosticInfoOptimizationBase::Argument::Argument(StringRef Key, int N)
: Key(Key), Val(itostr(N)) {}
DiagnosticInfoOptimizationBase::Argument::Argument(StringRef Key, float N)
: Key(Key), Val(llvm::to_string(N)) {}
DiagnosticInfoOptimizationBase::Argument::Argument(StringRef Key, long N)
: Key(Key), Val(itostr(N)) {}
DiagnosticInfoOptimizationBase::Argument::Argument(StringRef Key, long long N)
: Key(Key), Val(itostr(N)) {}
DiagnosticInfoOptimizationBase::Argument::Argument(StringRef Key, unsigned N)
: Key(Key), Val(utostr(N)) {}
DiagnosticInfoOptimizationBase::Argument::Argument(StringRef Key,
unsigned long N)
: Key(Key), Val(utostr(N)) {}
DiagnosticInfoOptimizationBase::Argument::Argument(StringRef Key,
unsigned long long N)
: Key(Key), Val(utostr(N)) {}
DiagnosticInfoOptimizationBase::Argument::Argument(StringRef Key, DebugLoc Loc)
: Key(Key), Loc(Loc) {
if (Loc) {
Val = (Loc->getFilename() + ":" + Twine(Loc.getLine()) + ":" +
Twine(Loc.getCol())).str();
} else {
Val = "<UNKNOWN LOCATION>";
}
}
void DiagnosticInfoOptimizationBase::print(DiagnosticPrinter &DP) const {
DP << getLocationStr() << ": " << getMsg();
if (Hotness)
DP << " (hotness: " << *Hotness << ")";
}
OptimizationRemark::OptimizationRemark(const char *PassName,
StringRef RemarkName,
const DiagnosticLocation &Loc,
const Value *CodeRegion)
: DiagnosticInfoIROptimization(
DK_OptimizationRemark, DS_Remark, PassName, RemarkName,
*cast<BasicBlock>(CodeRegion)->getParent(), Loc, CodeRegion) {}
OptimizationRemark::OptimizationRemark(const char *PassName,
StringRef RemarkName,
const Instruction *Inst)
: DiagnosticInfoIROptimization(DK_OptimizationRemark, DS_Remark, PassName,
RemarkName, *Inst->getParent()->getParent(),
Inst->getDebugLoc(), Inst->getParent()) {}
// Helper to allow for an assert before attempting to return an invalid
// reference.
static const BasicBlock &getFirstFunctionBlock(const Function *Func) {
assert(!Func->empty() && "Function does not have a body");
return Func->front();
}
OptimizationRemark::OptimizationRemark(const char *PassName,
StringRef RemarkName,
const Function *Func)
: DiagnosticInfoIROptimization(DK_OptimizationRemark, DS_Remark, PassName,
RemarkName, *Func, Func->getSubprogram(),
&getFirstFunctionBlock(Func)) {}
bool OptimizationRemark::isEnabled() const {
const Function &Fn = getFunction();
LLVMContext &Ctx = Fn.getContext();
return Ctx.getDiagHandlerPtr()->isPassedOptRemarkEnabled(getPassName());
}
OptimizationRemarkMissed::OptimizationRemarkMissed(
const char *PassName, StringRef RemarkName, const DiagnosticLocation &Loc,
const Value *CodeRegion)
: DiagnosticInfoIROptimization(
DK_OptimizationRemarkMissed, DS_Remark, PassName, RemarkName,
*cast<BasicBlock>(CodeRegion)->getParent(), Loc, CodeRegion) {}
OptimizationRemarkMissed::OptimizationRemarkMissed(const char *PassName,
StringRef RemarkName,
const Instruction *Inst)
: DiagnosticInfoIROptimization(DK_OptimizationRemarkMissed, DS_Remark,
PassName, RemarkName,
*Inst->getParent()->getParent(),
Inst->getDebugLoc(), Inst->getParent()) {}
bool OptimizationRemarkMissed::isEnabled() const {
const Function &Fn = getFunction();
LLVMContext &Ctx = Fn.getContext();
return Ctx.getDiagHandlerPtr()->isMissedOptRemarkEnabled(getPassName());
}
OptimizationRemarkAnalysis::OptimizationRemarkAnalysis(
const char *PassName, StringRef RemarkName, const DiagnosticLocation &Loc,
const Value *CodeRegion)
: DiagnosticInfoIROptimization(
DK_OptimizationRemarkAnalysis, DS_Remark, PassName, RemarkName,
*cast<BasicBlock>(CodeRegion)->getParent(), Loc, CodeRegion) {}
OptimizationRemarkAnalysis::OptimizationRemarkAnalysis(const char *PassName,
StringRef RemarkName,
const Instruction *Inst)
: DiagnosticInfoIROptimization(DK_OptimizationRemarkAnalysis, DS_Remark,
PassName, RemarkName,
*Inst->getParent()->getParent(),
Inst->getDebugLoc(), Inst->getParent()) {}
OptimizationRemarkAnalysis::OptimizationRemarkAnalysis(
enum DiagnosticKind Kind, const char *PassName, StringRef RemarkName,
const DiagnosticLocation &Loc, const Value *CodeRegion)
: DiagnosticInfoIROptimization(Kind, DS_Remark, PassName, RemarkName,
*cast<BasicBlock>(CodeRegion)->getParent(),
Loc, CodeRegion) {}
bool OptimizationRemarkAnalysis::isEnabled() const {
const Function &Fn = getFunction();
LLVMContext &Ctx = Fn.getContext();
return Ctx.getDiagHandlerPtr()->isAnalysisRemarkEnabled(getPassName()) ||
shouldAlwaysPrint();
}
void DiagnosticInfoMIRParser::print(DiagnosticPrinter &DP) const {
DP << Diagnostic;
}
DiagnosticInfoOptimizationFailure::DiagnosticInfoOptimizationFailure(
const char *PassName, StringRef RemarkName, const DiagnosticLocation &Loc,
const Value *CodeRegion)
: DiagnosticInfoIROptimization(
DK_OptimizationFailure, DS_Warning, PassName, RemarkName,
*cast<BasicBlock>(CodeRegion)->getParent(), Loc, CodeRegion) {}
bool DiagnosticInfoOptimizationFailure::isEnabled() const {
// Only print warnings.
return getSeverity() == DS_Warning;
}
void DiagnosticInfoUnsupported::print(DiagnosticPrinter &DP) const {
std::string Str;
raw_string_ostream OS(Str);
OS << getLocationStr() << ": in function " << getFunction().getName() << ' '
<< *getFunction().getFunctionType() << ": " << Msg << '\n';
OS.flush();
DP << Str;
}
void DiagnosticInfoISelFallback::print(DiagnosticPrinter &DP) const {
DP << "Instruction selection used fallback path for " << getFunction();
}
void DiagnosticInfoOptimizationBase::insert(StringRef S) {
Args.emplace_back(S);
}
void DiagnosticInfoOptimizationBase::insert(Argument A) {
Args.push_back(std::move(A));
}
void DiagnosticInfoOptimizationBase::insert(setIsVerbose V) {
IsVerbose = true;
}
void DiagnosticInfoOptimizationBase::insert(setExtraArgs EA) {
FirstExtraArgIndex = Args.size();
}
std::string DiagnosticInfoOptimizationBase::getMsg() const {
std::string Str;
raw_string_ostream OS(Str);
for (const DiagnosticInfoOptimizationBase::Argument &Arg :
make_range(Args.begin(), FirstExtraArgIndex == -1
? Args.end()
: Args.begin() + FirstExtraArgIndex))
OS << Arg.Val;
return OS.str();
}
void OptimizationRemarkAnalysisFPCommute::anchor() {}
void OptimizationRemarkAnalysisAliasing::anchor() {}
template <typename T>
static void mapRemarkHeader(
yaml::IO &io, T PassName, T RemarkName, DiagnosticLocation DL,
T FunctionName, Optional<uint64_t> Hotness,
SmallVectorImpl<DiagnosticInfoOptimizationBase::Argument> &Args) {
io.mapRequired("Pass", PassName);
io.mapRequired("Name", RemarkName);
if (!io.outputting() || DL.isValid())
io.mapOptional("DebugLoc", DL);
io.mapRequired("Function", FunctionName);
io.mapOptional("Hotness", Hotness);
io.mapOptional("Args", Args);
}
namespace llvm {
namespace yaml {
void MappingTraits<DiagnosticInfoOptimizationBase *>::mapping(
IO &io, DiagnosticInfoOptimizationBase *&OptDiag) {
assert(io.outputting() && "input not yet implemented");
if (io.mapTag("!Passed",
(OptDiag->getKind() == DK_OptimizationRemark ||
OptDiag->getKind() == DK_MachineOptimizationRemark)))
;
else if (io.mapTag(
"!Missed",
(OptDiag->getKind() == DK_OptimizationRemarkMissed ||
OptDiag->getKind() == DK_MachineOptimizationRemarkMissed)))
;
else if (io.mapTag(
"!Analysis",
(OptDiag->getKind() == DK_OptimizationRemarkAnalysis ||
OptDiag->getKind() == DK_MachineOptimizationRemarkAnalysis)))
;
else if (io.mapTag("!AnalysisFPCommute",
OptDiag->getKind() ==
DK_OptimizationRemarkAnalysisFPCommute))
;
else if (io.mapTag("!AnalysisAliasing",
OptDiag->getKind() ==
DK_OptimizationRemarkAnalysisAliasing))
;
else if (io.mapTag("!Failure", OptDiag->getKind() == DK_OptimizationFailure))
;
else
llvm_unreachable("Unknown remark type");
// These are read-only for now.
DiagnosticLocation DL = OptDiag->getLocation();
StringRef FN =
GlobalValue::dropLLVMManglingEscape(OptDiag->getFunction().getName());
StringRef PassName(OptDiag->PassName);
if (UseStringTable) {
remarks::StringTable &StrTab =
reinterpret_cast<RemarkStreamer *>(io.getContext())->getStringTable();
unsigned PassID = StrTab.add(PassName).first;
unsigned NameID = StrTab.add(OptDiag->RemarkName).first;
unsigned FunctionID = StrTab.add(FN).first;
mapRemarkHeader(io, PassID, NameID, DL, FunctionID, OptDiag->Hotness,
OptDiag->Args);
} else {
mapRemarkHeader(io, PassName, OptDiag->RemarkName, DL, FN, OptDiag->Hotness,
OptDiag->Args);
}
}
template <> struct MappingTraits<DiagnosticLocation> {
static void mapping(IO &io, DiagnosticLocation &DL) {
assert(io.outputting() && "input not yet implemented");
StringRef File = DL.getRelativePath();
unsigned Line = DL.getLine();
unsigned Col = DL.getColumn();
if (UseStringTable) {
remarks::StringTable &StrTab =
reinterpret_cast<RemarkStreamer *>(io.getContext())->getStringTable();
unsigned FileID = StrTab.add(File).first;
io.mapRequired("File", FileID);
} else {
io.mapRequired("File", File);
}
io.mapRequired("Line", Line);
io.mapRequired("Column", Col);
}
static const bool flow = true;
};
/// Helper struct for multiline string block literals. Use this type to preserve
/// newlines in strings.
struct StringBlockVal {
StringRef Value;
StringBlockVal(const std::string &Value) : Value(Value) {}
};
template <> struct BlockScalarTraits<StringBlockVal> {
static void output(const StringBlockVal &S, void *Ctx, raw_ostream &OS) {
return ScalarTraits<StringRef>::output(S.Value, Ctx, OS);
}
static StringRef input(StringRef Scalar, void *Ctx, StringBlockVal &S) {
return ScalarTraits<StringRef>::input(Scalar, Ctx, S.Value);
}
};
// Implement this as a mapping for now to get proper quotation for the value.
template <> struct MappingTraits<DiagnosticInfoOptimizationBase::Argument> {
static void mapping(IO &io, DiagnosticInfoOptimizationBase::Argument &A) {
assert(io.outputting() && "input not yet implemented");
if (UseStringTable) {
remarks::StringTable &StrTab =
reinterpret_cast<RemarkStreamer *>(io.getContext())->getStringTable();
auto ValueID = StrTab.add(A.Val).first;
io.mapRequired(A.Key.data(), ValueID);
} else if (StringRef(A.Val).count('\n') > 1) {
StringBlockVal S(A.Val);
io.mapRequired(A.Key.data(), S);
} else {
io.mapRequired(A.Key.data(), A.Val);
}
if (A.Loc.isValid())
io.mapOptional("DebugLoc", A.Loc);
}
};
} // end namespace yaml
} // end namespace llvm
LLVM_YAML_IS_SEQUENCE_VECTOR(DiagnosticInfoOptimizationBase::Argument)
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