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SPIRVToLLVMDbgTran.cpp
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//===- SPIRVToLLVMDbgTran.cpp - Converts debug info to LLVM -----*- C++ -*-===//
//
// The LLVM/SPIR-V Translator
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
// Copyright (c) 2018 Intel Corporation. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal with the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimers.
// Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimers in the documentation
// and/or other materials provided with the distribution.
// Neither the names of Intel Corporation, nor the names of its
// contributors may be used to endorse or promote products derived from this
// Software without specific prior written permission.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS WITH
// THE SOFTWARE.
//
//===----------------------------------------------------------------------===//
//
// This file implements translation of debug info from SPIR-V to LLVM metadata
//
//===----------------------------------------------------------------------===//
#include "SPIRVToLLVMDbgTran.h"
#include "SPIRVEntry.h"
#include "SPIRVFunction.h"
#include "SPIRVInstruction.h"
#include "SPIRVInternal.h"
#include "SPIRVReader.h"
#include "SPIRVType.h"
#include "llvm/ADT/StringExtras.h"
#include "llvm/IR/DIBuilder.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/Module.h"
using namespace std;
using namespace SPIRVDebug::Operand;
namespace SPIRV {
static uint64_t getDerivedSizeInBits(const DIType *Ty) {
if (auto Size = Ty->getSizeInBits())
return Size;
if (auto *DT = llvm::dyn_cast<const llvm::DIDerivedType>(Ty))
if (auto *BT = llvm::dyn_cast<const llvm::DIType>(DT->getRawBaseType()))
return getDerivedSizeInBits(BT);
return 0;
}
SPIRVToLLVMDbgTran::SPIRVToLLVMDbgTran(SPIRVModule *TBM, Module *TM,
SPIRVToLLVM *Reader)
: BM(TBM), M(TM), Builder(*M), SPIRVReader(Reader) {
Enable = BM->hasDebugInfo();
}
void SPIRVToLLVMDbgTran::addDbgInfoVersion() {
if (!Enable)
return;
M->addModuleFlag(Module::Warning, "Debug Info Version",
DEBUG_METADATA_VERSION);
}
DIFile *
SPIRVToLLVMDbgTran::getDIFile(const std::string &FileName,
Optional<DIFile::ChecksumInfo<StringRef>> CS) {
return getOrInsert(FileMap, FileName, [=]() {
SplitFileName Split(FileName);
if (!Split.BaseName.empty())
return Builder.createFile(Split.BaseName, Split.Path, CS);
return static_cast<DIFile *>(nullptr);
});
}
SPIRVExtInst *SPIRVToLLVMDbgTran::getDbgInst(const SPIRVId Id) {
SPIRVEntry *E = BM->getEntry(Id);
if (isa<OpExtInst>(E)) {
SPIRVExtInst *EI = static_cast<SPIRVExtInst *>(E);
if (EI->getExtSetKind() == SPIRV::SPIRVEIS_Debug ||
EI->getExtSetKind() == SPIRV::SPIRVEIS_OpenCL_DebugInfo_100)
return EI;
}
return nullptr;
}
const std::string &SPIRVToLLVMDbgTran::getString(const SPIRVId Id) {
SPIRVString *String = BM->get<SPIRVString>(Id);
assert(String && "Invalid string");
return String->getStr();
}
void SPIRVToLLVMDbgTran::transDbgInfo(const SPIRVValue *SV, Value *V) {
// A constant sampler does not have a corresponding SPIRVInstruction.
if (SV->getOpCode() == OpConstantSampler)
return;
if (Instruction *I = dyn_cast<Instruction>(V)) {
const SPIRVInstruction *SI = static_cast<const SPIRVInstruction *>(SV);
I->setDebugLoc(transDebugScope(SI));
}
}
DIScope *SPIRVToLLVMDbgTran::getScope(const SPIRVEntry *ScopeInst) {
if (ScopeInst->getOpCode() == OpString)
return getDIFile(static_cast<const SPIRVString *>(ScopeInst)->getStr());
return transDebugInst<DIScope>(static_cast<const SPIRVExtInst *>(ScopeInst));
}
DICompileUnit *
SPIRVToLLVMDbgTran::transCompileUnit(const SPIRVExtInst *DebugInst) {
const SPIRVWordVec &Ops = DebugInst->getArguments();
using namespace SPIRVDebug::Operand::CompilationUnit;
assert(Ops.size() == OperandCount && "Invalid number of operands");
M->addModuleFlag(llvm::Module::Max, "Dwarf Version", Ops[DWARFVersionIdx]);
unsigned SourceLang = convertSPIRVSourceLangToDWARF(Ops[LanguageIdx]);
auto Producer = findModuleProducer();
CU = Builder.createCompileUnit(SourceLang, getFile(Ops[SourceIdx]), Producer,
false, "", 0);
return CU;
}
DIBasicType *SPIRVToLLVMDbgTran::transTypeBasic(const SPIRVExtInst *DebugInst) {
using namespace SPIRVDebug::Operand::TypeBasic;
const SPIRVWordVec &Ops = DebugInst->getArguments();
assert(Ops.size() == OperandCount && "Invalid number of operands");
StringRef Name = getString(Ops[NameIdx]);
auto Tag = static_cast<SPIRVDebug::EncodingTag>(Ops[EncodingIdx]);
unsigned Encoding = SPIRV::DbgEncodingMap::rmap(Tag);
if (Encoding == 0)
return Builder.createUnspecifiedType(Name);
uint64_t Size = BM->get<SPIRVConstant>(Ops[SizeIdx])->getZExtIntValue();
return Builder.createBasicType(Name, Size, Encoding);
}
DIDerivedType *
SPIRVToLLVMDbgTran::transTypeQualifier(const SPIRVExtInst *DebugInst) {
using namespace SPIRVDebug::Operand::TypeQualifier;
const SPIRVWordVec &Ops = DebugInst->getArguments();
assert(Ops.size() == OperandCount && "Invalid number of operands");
DIType *BaseTy =
transDebugInst<DIType>(BM->get<SPIRVExtInst>(Ops[BaseTypeIdx]));
unsigned Tag = SPIRV::DbgTypeQulifierMap::rmap(
static_cast<SPIRVDebug::TypeQualifierTag>(Ops[QualifierIdx]));
return Builder.createQualifiedType(Tag, BaseTy);
}
DIType *SPIRVToLLVMDbgTran::transTypePointer(const SPIRVExtInst *DebugInst) {
using namespace SPIRVDebug::Operand::TypePointer;
const SPIRVWordVec &Ops = DebugInst->getArguments();
assert(Ops.size() == OperandCount && "Invalid number of operands");
DIType *PointeeTy = nullptr;
if (BM->getEntry(Ops[BaseTypeIdx])->getOpCode() != OpTypeVoid)
PointeeTy = transDebugInst<DIType>(BM->get<SPIRVExtInst>(Ops[BaseTypeIdx]));
Optional<unsigned> AS;
if (Ops[StorageClassIdx] != ~0U) {
auto SC = static_cast<SPIRVStorageClassKind>(Ops[StorageClassIdx]);
AS = SPIRSPIRVAddrSpaceMap::rmap(SC);
}
DIType *Ty;
SPIRVWord Flags = Ops[FlagsIdx];
if (Flags & SPIRVDebug::FlagIsLValueReference)
Ty = Builder.createReferenceType(dwarf::DW_TAG_reference_type, PointeeTy, 0,
0, AS);
else if (Flags & SPIRVDebug::FlagIsRValueReference)
Ty = Builder.createReferenceType(dwarf::DW_TAG_rvalue_reference_type,
PointeeTy, 0, 0, AS);
else
Ty = Builder.createPointerType(PointeeTy, BM->getAddressingModel() * 32, 0,
AS);
if (Flags & SPIRVDebug::FlagIsObjectPointer)
Ty = Builder.createObjectPointerType(Ty);
else if (Flags & SPIRVDebug::FlagIsArtificial)
Ty = Builder.createArtificialType(Ty);
return Ty;
}
DICompositeType *
SPIRVToLLVMDbgTran::transTypeArray(const SPIRVExtInst *DebugInst) {
using namespace SPIRVDebug::Operand::TypeArray;
const SPIRVWordVec &Ops = DebugInst->getArguments();
assert(Ops.size() >= MinOperandCount && "Invalid number of operands");
DIType *BaseTy =
transDebugInst<DIType>(BM->get<SPIRVExtInst>(Ops[BaseTypeIdx]));
size_t TotalCount = 1;
SmallVector<llvm::Metadata *, 8> Subscripts;
// Ops looks like: { BaseType, count1|upperBound1, count2|upperBound2, ...,
// countN|upperBoundN, lowerBound1, lowerBound2, ..., lowerBoundN }
for (size_t I = ComponentCountIdx, E = Ops.size() / 2 + 1; I < E; ++I) {
if (auto *LocalVar = getDbgInst<SPIRVDebug::LocalVariable>(Ops[I])) {
auto *UpperBound = transDebugInst<DILocalVariable>(LocalVar);
SPIRVConstant *C = BM->get<SPIRVConstant>(Ops[Ops.size() / 2 + I]);
int64_t ConstantAsInt = static_cast<int64_t>(C->getZExtIntValue());
auto *LowerBound = ConstantAsMetadata::get(
ConstantInt::get(M->getContext(), APInt(64, ConstantAsInt)));
Subscripts.push_back(Builder.getOrCreateSubrange(nullptr, LowerBound,
UpperBound, nullptr));
continue;
}
if (auto *ExprUB = getDbgInst<SPIRVDebug::Expression>(Ops[I])) {
auto *UpperBound = transDebugInst<DIExpression>(ExprUB);
auto *ExprLB =
getDbgInst<SPIRVDebug::Expression>(Ops[Ops.size() / 2 + I]);
auto *LowerBound = transDebugInst<DIExpression>(ExprLB);
Subscripts.push_back(Builder.getOrCreateSubrange(nullptr, LowerBound,
UpperBound, nullptr));
continue;
}
if (!getDbgInst<SPIRVDebug::DebugInfoNone>(Ops[I])) {
SPIRVConstant *C = BM->get<SPIRVConstant>(Ops[I]);
int64_t Count = static_cast<int64_t>(C->getZExtIntValue());
// If the SPIR-V file was generated by an older version of the translator,
// Ops may not contain the LowerBound
if (Ops.size() / 2 + I < Ops.size()) {
C = BM->get<SPIRVConstant>(Ops[Ops.size() / 2 + I]);
int64_t LowerBound = static_cast<int64_t>(C->getZExtIntValue());
Subscripts.push_back(Builder.getOrCreateSubrange(LowerBound, Count));
} else {
auto *CountAsMD = ConstantAsMetadata::get(
ConstantInt::get(M->getContext(), APInt(64, Count)));
Subscripts.push_back(
Builder.getOrCreateSubrange(CountAsMD, nullptr, nullptr, nullptr));
}
// Count = -1 means that the array is empty
TotalCount *= Count > 0 ? static_cast<size_t>(Count) : 0;
continue;
}
}
DINodeArray SubscriptArray = Builder.getOrCreateArray(Subscripts);
size_t Size = getDerivedSizeInBits(BaseTy) * TotalCount;
return Builder.createArrayType(Size, 0 /*align*/, BaseTy, SubscriptArray);
}
DICompositeType *
SPIRVToLLVMDbgTran::transTypeVector(const SPIRVExtInst *DebugInst) {
using namespace SPIRVDebug::Operand::TypeVector;
const SPIRVWordVec &Ops = DebugInst->getArguments();
assert(Ops.size() >= MinOperandCount && "Invalid number of operands");
DIType *BaseTy =
transDebugInst<DIType>(BM->get<SPIRVExtInst>(Ops[BaseTypeIdx]));
SPIRVWord Count = Ops[ComponentCountIdx];
// FIXME: The current design of SPIR-V Debug Info doesn't provide a field
// for the derived memory size. Meanwhile, OpenCL/SYCL 3-element vectors
// occupy the same amount of memory as 4-element vectors, hence the simple
// elem_count * elem_size formula fails in this edge case.
// Once the specification is updated to reflect the whole memory block's
// size in SPIR-V, the calculations below must be replaced with a simple
// translation of the known size.
SPIRVWord SizeCount = (Count == 3) ? 4 : Count;
uint64_t Size = getDerivedSizeInBits(BaseTy) * SizeCount;
SmallVector<llvm::Metadata *, 8> Subscripts;
Subscripts.push_back(Builder.getOrCreateSubrange(0, Count));
DINodeArray SubscriptArray = Builder.getOrCreateArray(Subscripts);
return Builder.createVectorType(Size, 0 /*align*/, BaseTy, SubscriptArray);
}
DICompositeType *
SPIRVToLLVMDbgTran::transTypeComposite(const SPIRVExtInst *DebugInst) {
using namespace SPIRVDebug::Operand::TypeComposite;
const SPIRVWordVec &Ops = DebugInst->getArguments();
assert(Ops.size() >= MinOperandCount && "Invalid number of operands");
StringRef Name = getString(Ops[NameIdx]);
DIFile *File = getFile(Ops[SourceIdx]);
unsigned LineNo = Ops[LineIdx];
DIScope *ParentScope = getScope(BM->getEntry(Ops[ParentIdx]));
uint64_t Size = 0;
SPIRVEntry *SizeEntry = BM->getEntry(Ops[SizeIdx]);
if (!(SizeEntry->isExtInst(SPIRVEIS_Debug, SPIRVDebug::DebugInfoNone) ||
SizeEntry->isExtInst(SPIRVEIS_OpenCL_DebugInfo_100,
SPIRVDebug::DebugInfoNone))) {
Size = BM->get<SPIRVConstant>(Ops[SizeIdx])->getZExtIntValue();
}
uint64_t Align = 0;
DIType *DerivedFrom = nullptr;
StringRef Identifier;
SPIRVEntry *UniqId = BM->get<SPIRVEntry>(Ops[LinkageNameIdx]);
if (UniqId->getOpCode() == OpString)
Identifier = static_cast<SPIRVString *>(UniqId)->getStr();
DINode::DIFlags Flags = DINode::FlagZero;
if (Ops[FlagsIdx] & SPIRVDebug::FlagIsFwdDecl)
Flags |= DINode::FlagFwdDecl;
if (Ops[FlagsIdx] & SPIRVDebug::FlagTypePassByValue)
Flags |= DINode::FlagTypePassByValue;
if (Ops[FlagsIdx] & SPIRVDebug::FlagTypePassByReference)
Flags |= DINode::FlagTypePassByReference;
DICompositeType *CT = nullptr;
switch (Ops[TagIdx]) {
case SPIRVDebug::Class:
// TODO: should be replaced with createClassType, when bug with creating
// ClassType with llvm::dwarf::DW_TAG_struct_type tag will be fixed
CT = Builder.createReplaceableCompositeType(
llvm::dwarf::DW_TAG_class_type, Name, ParentScope, File, LineNo, 0,
Size, Align, Flags, Identifier);
CT = llvm::MDNode::replaceWithDistinct(llvm::TempDICompositeType(CT));
break;
case SPIRVDebug::Structure:
CT = Builder.createStructType(ParentScope, Name, File, LineNo, Size, Align,
Flags, DerivedFrom,
DINodeArray() /*elements*/, 0 /*RunTimeLang*/,
nullptr /*VTableHolder*/, Identifier);
break;
case SPIRVDebug::Union:
CT = Builder.createUnionType(ParentScope, Name, File, LineNo, Size, Align,
Flags, DINodeArray(), 0 /*RuntimrLang*/,
Identifier);
break;
default:
llvm_unreachable("Unexpected composite type");
break;
}
DebugInstCache[DebugInst] = CT;
SmallVector<llvm::Metadata *, 8> EltTys;
for (size_t I = FirstMemberIdx; I < Ops.size(); ++I) {
EltTys.push_back(transDebugInst(BM->get<SPIRVExtInst>(Ops[I])));
}
DINodeArray Elements = Builder.getOrCreateArray(EltTys);
Builder.replaceArrays(CT, Elements);
assert(CT && "Composite type translation failed.");
return CT;
}
DINode *SPIRVToLLVMDbgTran::transTypeMember(const SPIRVExtInst *DebugInst) {
using namespace SPIRVDebug::Operand::TypeMember;
const SPIRVWordVec &Ops = DebugInst->getArguments();
assert(Ops.size() >= MinOperandCount && "Invalid number of operands");
DIFile *File = getFile(Ops[SourceIdx]);
unsigned LineNo = Ops[LineIdx];
StringRef Name = getString(Ops[NameIdx]);
DIScope *Scope = getScope(BM->getEntry(Ops[ParentIdx]));
DIType *BaseType =
transDebugInst<DIType>(BM->get<SPIRVExtInst>(Ops[TypeIdx]));
uint64_t OffsetInBits =
BM->get<SPIRVConstant>(Ops[OffsetIdx])->getZExtIntValue();
unsigned SPIRVFlags = Ops[FlagsIdx];
DINode::DIFlags Flags = DINode::FlagZero;
if ((SPIRVDebug::FlagAccess & SPIRVFlags) == SPIRVDebug::FlagIsPublic) {
Flags |= DINode::FlagPublic;
} else if (SPIRVFlags & SPIRVDebug::FlagIsProtected) {
Flags |= DINode::FlagProtected;
} else if (SPIRVFlags & SPIRVDebug::FlagIsPrivate) {
Flags |= DINode::FlagPrivate;
}
if (SPIRVFlags & SPIRVDebug::FlagIsStaticMember)
Flags |= DINode::FlagStaticMember;
if (Flags & DINode::FlagStaticMember && Ops.size() > MinOperandCount) {
SPIRVValue *ConstVal = BM->get<SPIRVValue>(Ops[ValueIdx]);
assert(isConstantOpCode(ConstVal->getOpCode()) &&
"Static member must be a constant");
llvm::Value *Val = SPIRVReader->transValue(ConstVal, nullptr, nullptr);
return Builder.createStaticMemberType(Scope, Name, File, LineNo, BaseType,
Flags, cast<llvm::Constant>(Val));
}
uint64_t Size = BM->get<SPIRVConstant>(Ops[SizeIdx])->getZExtIntValue();
uint64_t Alignment = 0;
return Builder.createMemberType(Scope, Name, File, LineNo, Size, Alignment,
OffsetInBits, Flags, BaseType);
}
DINode *SPIRVToLLVMDbgTran::transTypeEnum(const SPIRVExtInst *DebugInst) {
using namespace SPIRVDebug::Operand::TypeEnum;
const SPIRVWordVec &Ops = DebugInst->getArguments();
assert(Ops.size() >= MinOperandCount && "Invalid number of operands");
StringRef Name = getString(Ops[NameIdx]);
DIFile *File = getFile(Ops[SourceIdx]);
unsigned LineNo = Ops[LineIdx];
DIScope *Scope = getScope(BM->getEntry(Ops[ParentIdx]));
uint64_t SizeInBits = BM->get<SPIRVConstant>(Ops[SizeIdx])->getZExtIntValue();
unsigned AlignInBits = 0;
SPIRVWord Flags = Ops[FlagsIdx];
if (Flags & SPIRVDebug::FlagIsFwdDecl) {
return Builder.createForwardDecl(dwarf::DW_TAG_enumeration_type, Name,
Scope, File, LineNo, AlignInBits,
SizeInBits);
} else {
SmallVector<llvm::Metadata *, 16> Elts;
for (size_t I = FirstEnumeratorIdx, E = Ops.size(); I < E; I += 2) {
uint64_t Val = BM->get<SPIRVConstant>(Ops[I])->getZExtIntValue();
StringRef Name = getString(Ops[I + 1]);
Elts.push_back(Builder.createEnumerator(Name, Val));
}
DINodeArray Enumerators = Builder.getOrCreateArray(Elts);
DIType *UnderlyingType = nullptr;
SPIRVEntry *E = BM->getEntry(Ops[UnderlyingTypeIdx]);
if (!isa<OpTypeVoid>(E))
UnderlyingType = transDebugInst<DIType>(static_cast<SPIRVExtInst *>(E));
return Builder.createEnumerationType(Scope, Name, File, LineNo, SizeInBits,
AlignInBits, Enumerators,
UnderlyingType, "", UnderlyingType);
}
}
DINode *SPIRVToLLVMDbgTran::transTypeFunction(const SPIRVExtInst *DebugInst) {
using namespace SPIRVDebug::Operand::TypeFunction;
const SPIRVWordVec &Ops = DebugInst->getArguments();
assert(Ops.size() >= MinOperandCount && "Invalid number of operands");
SPIRVWord SPIRVFlags = Ops[FlagsIdx];
DINode::DIFlags Flags = DINode::FlagZero;
if (SPIRVFlags & SPIRVDebug::FlagIsLValueReference)
Flags |= llvm::DINode::FlagLValueReference;
if (SPIRVFlags & SPIRVDebug::FlagIsRValueReference)
Flags |= llvm::DINode::FlagRValueReference;
SPIRVEntry *E = BM->getEntry(Ops[ReturnTypeIdx]);
MDNode *RT = isa<OpTypeVoid>(E)
? nullptr
: transDebugInst(BM->get<SPIRVExtInst>(Ops[ReturnTypeIdx]));
SmallVector<llvm::Metadata *, 16> Elements{RT};
for (size_t I = FirstParameterIdx, E = Ops.size(); I < E; ++I) {
SPIRVEntry *P = BM->getEntry(Ops[I]);
MDNode *Param = isa<OpTypeVoid>(P)
? nullptr
: transDebugInst(BM->get<SPIRVExtInst>(Ops[I]));
Elements.push_back(Param);
}
DITypeRefArray ArgTypes = Builder.getOrCreateTypeArray(Elements);
return Builder.createSubroutineType(ArgTypes, Flags);
}
DINode *
SPIRVToLLVMDbgTran::transTypePtrToMember(const SPIRVExtInst *DebugInst) {
using namespace SPIRVDebug::Operand::PtrToMember;
const SPIRVWordVec &Ops = DebugInst->getArguments();
assert(Ops.size() >= OperandCount && "Invalid number of operands");
SPIRVExtInst *Member = BM->get<SPIRVExtInst>(Ops[MemberTypeIdx]);
DIType *PointeeTy = transDebugInst<DIType>(Member);
SPIRVExtInst *ContainingTy = BM->get<SPIRVExtInst>(Ops[ParentIdx]);
DIType *BaseTy = transDebugInst<DIType>(ContainingTy);
return Builder.createMemberPointerType(PointeeTy, BaseTy, 0);
}
DINode *SPIRVToLLVMDbgTran::transLexicalBlock(const SPIRVExtInst *DebugInst) {
using namespace SPIRVDebug::Operand::LexicalBlock;
const SPIRVWordVec &Ops = DebugInst->getArguments();
DIScope *ParentScope = getScope(BM->getEntry(Ops[ParentIdx]));
DIFile *File = getFile(Ops[SourceIdx]);
unsigned LineNo = Ops[LineIdx];
if (Ops.size() > NameIdx) {
StringRef Name = getString(Ops[NameIdx]);
return Builder.createNameSpace(ParentScope, Name,
false /*inlined namespace*/);
}
unsigned Column = Ops[ColumnIdx];
return Builder.createLexicalBlock(ParentScope, File, LineNo, Column);
}
DINode *SPIRVToLLVMDbgTran::transLexicalBlockDiscriminator(
const SPIRVExtInst *DebugInst) {
using namespace SPIRVDebug::Operand::LexicalBlockDiscriminator;
const SPIRVWordVec &Ops = DebugInst->getArguments();
DIFile *File = getFile(Ops[SourceIdx]);
unsigned Disc = Ops[DiscriminatorIdx];
DIScope *ParentScope = getScope(BM->getEntry(Ops[ParentIdx]));
return Builder.createLexicalBlockFile(ParentScope, File, Disc);
}
DINode *SPIRVToLLVMDbgTran::transFunction(const SPIRVExtInst *DebugInst) {
using namespace SPIRVDebug::Operand::Function;
const SPIRVWordVec &Ops = DebugInst->getArguments();
assert(Ops.size() >= MinOperandCount && "Invalid number of operands");
StringRef Name = getString(Ops[NameIdx]);
DISubroutineType *Ty =
transDebugInst<DISubroutineType>(BM->get<SPIRVExtInst>(Ops[TypeIdx]));
DIFile *File = getFile(Ops[SourceIdx]);
unsigned LineNo = Ops[LineIdx];
DIScope *Scope = getScope(BM->getEntry(Ops[ParentIdx]));
StringRef LinkageName = getString(Ops[LinkageNameIdx]);
SPIRVWord SPIRVDebugFlags = Ops[FlagsIdx];
DINode::DIFlags Flags = DINode::FlagZero;
if (SPIRVDebugFlags & SPIRVDebug::FlagIsArtificial)
Flags |= llvm::DINode::FlagArtificial;
if (SPIRVDebugFlags & SPIRVDebug::FlagIsExplicit)
Flags |= llvm::DINode::FlagExplicit;
if (SPIRVDebugFlags & SPIRVDebug::FlagIsPrototyped)
Flags |= llvm::DINode::FlagPrototyped;
if (SPIRVDebugFlags & SPIRVDebug::FlagIsLValueReference)
Flags |= llvm::DINode::FlagLValueReference;
if (SPIRVDebugFlags & SPIRVDebug::FlagIsRValueReference)
Flags |= llvm::DINode::FlagRValueReference;
if ((SPIRVDebugFlags & SPIRVDebug::FlagAccess) == SPIRVDebug::FlagIsPublic)
Flags |= llvm::DINode::FlagPublic;
if (SPIRVDebugFlags & SPIRVDebug::FlagIsProtected)
Flags |= llvm::DINode::FlagProtected;
if (SPIRVDebugFlags & SPIRVDebug::FlagIsPrivate)
Flags |= llvm::DINode::FlagPrivate;
bool IsDefinition = SPIRVDebugFlags & SPIRVDebug::FlagIsDefinition;
bool IsOptimized = SPIRVDebugFlags & SPIRVDebug::FlagIsOptimized;
bool IsLocal = SPIRVDebugFlags & SPIRVDebug::FlagIsLocal;
bool IsMainSubprogram =
BM->isEntryPoint(spv::ExecutionModelKernel, Ops[FunctionIdIdx]);
DISubprogram::DISPFlags SPFlags =
DISubprogram::toSPFlags(IsLocal, IsDefinition, IsOptimized,
DISubprogram::SPFlagNonvirtual, IsMainSubprogram);
unsigned ScopeLine = Ops[ScopeLineIdx];
// Function declaration descriptor
DISubprogram *FD = nullptr;
if (Ops.size() > DeclarationIdx) {
FD = transDebugInst<DISubprogram>(
BM->get<SPIRVExtInst>(Ops[DeclarationIdx]));
}
// Here we create fake array of template parameters. If it was plain nullptr,
// the template parameter operand would be removed in DISubprogram::getImpl.
// But we want it to be there, because if there is DebugTemplate instruction
// refering to this function, TransTemplate method must be able to replace the
// template parameter operand, thus it must be in the operands list.
SmallVector<llvm::Metadata *, 8> Elts;
DINodeArray TParams = Builder.getOrCreateArray(Elts);
llvm::DITemplateParameterArray TParamsArray = TParams.get();
DISubprogram *DIS = nullptr;
if (Scope && (isa<DICompositeType>(Scope) || isa<DINamespace>(Scope)) &&
!IsDefinition)
DIS = Builder.createMethod(Scope, Name, LinkageName, File, LineNo, Ty, 0, 0,
nullptr, Flags, SPFlags, TParamsArray);
else
DIS = Builder.createFunction(Scope, Name, LinkageName, File, LineNo, Ty,
ScopeLine, Flags, SPFlags, TParamsArray, FD);
DebugInstCache[DebugInst] = DIS;
SPIRVId RealFuncId = Ops[FunctionIdIdx];
FuncMap[RealFuncId] = DIS;
// Function.
SPIRVEntry *E = BM->getEntry(Ops[FunctionIdIdx]);
if (E->getOpCode() == OpFunction) {
SPIRVFunction *BF = static_cast<SPIRVFunction *>(E);
llvm::Function *F = SPIRVReader->transFunction(BF);
assert(F && "Translation of function failed!");
if (!F->hasMetadata("dbg"))
F->setMetadata("dbg", DIS);
}
return DIS;
}
DINode *SPIRVToLLVMDbgTran::transFunctionDecl(const SPIRVExtInst *DebugInst) {
using namespace SPIRVDebug::Operand::FunctionDeclaration;
const SPIRVWordVec &Ops = DebugInst->getArguments();
assert(Ops.size() == OperandCount && "Invalid number of operands");
// Scope
DIScope *Scope = getScope(BM->getEntry(Ops[ParentIdx]));
StringRef Name = getString(Ops[NameIdx]);
StringRef LinkageName = getString(Ops[LinkageNameIdx]);
DIFile *File = getFile(Ops[SourceIdx]);
unsigned LineNo = Ops[LineIdx];
DISubroutineType *Ty =
transDebugInst<DISubroutineType>(BM->get<SPIRVExtInst>(Ops[TypeIdx]));
SPIRVWord SPIRVDebugFlags = Ops[FlagsIdx];
bool IsDefinition = SPIRVDebugFlags & SPIRVDebug::FlagIsDefinition;
bool IsOptimized = SPIRVDebugFlags & SPIRVDebug::FlagIsOptimized;
bool IsLocal = SPIRVDebugFlags & SPIRVDebug::FlagIsLocal;
DINode::DIFlags Flags = DINode::FlagZero;
if (SPIRVDebugFlags & SPIRVDebug::FlagIsArtificial)
Flags |= llvm::DINode::FlagArtificial;
if (SPIRVDebugFlags & SPIRVDebug::FlagIsExplicit)
Flags |= llvm::DINode::FlagExplicit;
if (SPIRVDebugFlags & SPIRVDebug::FlagIsPrototyped)
Flags |= llvm::DINode::FlagPrototyped;
if (SPIRVDebugFlags & SPIRVDebug::FlagIsLValueReference)
Flags |= llvm::DINode::FlagLValueReference;
if (SPIRVDebugFlags & SPIRVDebug::FlagIsRValueReference)
Flags |= llvm::DINode::FlagRValueReference;
if ((SPIRVDebugFlags & SPIRVDebug::FlagAccess) == SPIRVDebug::FlagIsPublic)
Flags |= llvm::DINode::FlagPublic;
if (SPIRVDebugFlags & SPIRVDebug::FlagIsProtected)
Flags |= llvm::DINode::FlagProtected;
if (SPIRVDebugFlags & SPIRVDebug::FlagIsPrivate)
Flags |= llvm::DINode::FlagPrivate;
// Here we create fake array of template parameters. If it was plain nullptr,
// the template parameter operand would be removed in DISubprogram::getImpl.
// But we want it to be there, because if there is DebugTemplate instruction
// refering to this function, TransTemplate method must be able to replace the
// template parameter operand, thus it must be in the operands list.
SmallVector<llvm::Metadata *, 8> Elts;
DINodeArray TParams = Builder.getOrCreateArray(Elts);
llvm::DITemplateParameterArray TParamsArray = TParams.get();
DISubprogram *DIS = nullptr;
DISubprogram::DISPFlags SPFlags =
DISubprogram::toSPFlags(IsLocal, IsDefinition, IsOptimized);
if (isa<DICompositeType>(Scope) || isa<DINamespace>(Scope))
DIS = Builder.createMethod(Scope, Name, LinkageName, File, LineNo, Ty, 0, 0,
nullptr, Flags, SPFlags, TParamsArray);
else {
// Since a function declaration doesn't have any retained nodes, resolve
// the temporary placeholder for them immediately.
DIS = Builder.createTempFunctionFwdDecl(Scope, Name, LinkageName, File,
LineNo, Ty, 0, Flags, SPFlags,
TParamsArray);
llvm::TempMDNode FwdDecl(cast<llvm::MDNode>(DIS));
DIS = Builder.replaceTemporary(std::move(FwdDecl), DIS);
}
DebugInstCache[DebugInst] = DIS;
return DIS;
}
MDNode *SPIRVToLLVMDbgTran::transGlobalVariable(const SPIRVExtInst *DebugInst) {
using namespace SPIRVDebug::Operand::GlobalVariable;
const SPIRVWordVec &Ops = DebugInst->getArguments();
assert(Ops.size() >= MinOperandCount && "Invalid number of operands");
StringRef Name = getString(Ops[NameIdx]);
DIType *Ty = transDebugInst<DIType>(BM->get<SPIRVExtInst>(Ops[TypeIdx]));
DIFile *File = getFile(Ops[SourceIdx]);
unsigned LineNo = Ops[LineIdx];
DIScope *Parent = getScope(BM->getEntry(Ops[ParentIdx]));
StringRef LinkageName = getString(Ops[LinkageNameIdx]);
DIDerivedType *StaticMemberDecl = nullptr;
if (Ops.size() > MinOperandCount) {
StaticMemberDecl = transDebugInst<DIDerivedType>(
BM->get<SPIRVExtInst>(Ops[StaticMemberDeclarationIdx]));
}
bool IsLocal = Ops[FlagsIdx] & SPIRVDebug::FlagIsLocal;
bool IsDefinition = Ops[FlagsIdx] & SPIRVDebug::FlagIsDefinition;
MDNode *VarDecl = nullptr;
if (IsDefinition) {
VarDecl = Builder.createGlobalVariableExpression(
Parent, Name, LinkageName, File, LineNo, Ty, IsLocal, IsDefinition,
nullptr, StaticMemberDecl);
} else {
VarDecl = Builder.createTempGlobalVariableFwdDecl(
Parent, Name, LinkageName, File, LineNo, Ty, IsLocal, StaticMemberDecl);
// replaceAllUsesWith call makes VarDecl non-temp.
// Otherwise DIBuilder will crash at finalization.
llvm::TempMDNode TMP(VarDecl);
VarDecl = Builder.replaceTemporary(std::move(TMP), VarDecl);
}
// If the variable has no initializer Ops[VariableIdx] is OpDebugInfoNone.
// Otherwise Ops[VariableIdx] may be a global variable or a constant(C++
// static const).
if (VarDecl && !getDbgInst<SPIRVDebug::DebugInfoNone>(Ops[VariableIdx])) {
SPIRVValue *V = BM->get<SPIRVValue>(Ops[VariableIdx]);
Value *Var = SPIRVReader->transValue(V, nullptr, nullptr);
llvm::GlobalVariable *GV = dyn_cast_or_null<llvm::GlobalVariable>(Var);
if (GV && !GV->hasMetadata("dbg"))
GV->addMetadata("dbg", *VarDecl);
}
return VarDecl;
}
DINode *SPIRVToLLVMDbgTran::transLocalVariable(const SPIRVExtInst *DebugInst) {
using namespace SPIRVDebug::Operand::LocalVariable;
const SPIRVWordVec &Ops = DebugInst->getArguments();
assert(Ops.size() >= MinOperandCount && "Invalid number of operands");
DIScope *Scope = getScope(BM->getEntry(Ops[ParentIdx]));
StringRef Name = getString(Ops[NameIdx]);
DIFile *File = getFile(Ops[SourceIdx]);
unsigned LineNo = Ops[LineIdx];
DIType *Ty = transDebugInst<DIType>(BM->get<SPIRVExtInst>(Ops[TypeIdx]));
DINode::DIFlags Flags = DINode::FlagZero;
if (Ops[FlagsIdx] & SPIRVDebug::FlagIsArtificial)
Flags |= DINode::FlagArtificial;
if (Ops[FlagsIdx] & SPIRVDebug::FlagIsObjectPointer)
Flags |= DINode::FlagObjectPointer;
if (Ops.size() > ArgNumberIdx)
return Builder.createParameterVariable(Scope, Name, Ops[ArgNumberIdx], File,
LineNo, Ty, true, Flags);
return Builder.createAutoVariable(Scope, Name, File, LineNo, Ty, true, Flags);
}
DINode *SPIRVToLLVMDbgTran::transTypedef(const SPIRVExtInst *DebugInst) {
using namespace SPIRVDebug::Operand::Typedef;
const SPIRVWordVec &Ops = DebugInst->getArguments();
assert(Ops.size() >= OperandCount && "Invalid number of operands");
DIFile *File = getFile(Ops[SourceIdx]);
unsigned LineNo = Ops[LineIdx];
StringRef Alias = getString(Ops[NameIdx]);
SPIRVEntry *TypeInst = BM->getEntry(Ops[BaseTypeIdx]);
DIType *Ty = transDebugInst<DIType>(static_cast<SPIRVExtInst *>(TypeInst));
DIScope *Scope = getScope(BM->getEntry(Ops[ParentIdx]));
assert(Scope && "Typedef should have a parent scope");
return Builder.createTypedef(Ty, Alias, File, LineNo, Scope);
}
DINode *SPIRVToLLVMDbgTran::transInheritance(const SPIRVExtInst *DebugInst) {
using namespace SPIRVDebug::Operand::TypeInheritance;
const SPIRVWordVec &Ops = DebugInst->getArguments();
assert(Ops.size() >= OperandCount && "Invalid number of operands");
DIType *Parent =
transDebugInst<DIType>(BM->get<SPIRVExtInst>(Ops[ParentIdx]));
DIType *Child = transDebugInst<DIType>(BM->get<SPIRVExtInst>(Ops[ChildIdx]));
DINode::DIFlags Flags = DINode::FlagZero;
if ((Ops[FlagsIdx] & SPIRVDebug::FlagAccess) == SPIRVDebug::FlagIsPublic)
Flags |= llvm::DINode::FlagPublic;
if ((Ops[FlagsIdx] & SPIRVDebug::FlagAccess) == SPIRVDebug::FlagIsProtected)
Flags |= llvm::DINode::FlagProtected;
if ((Ops[FlagsIdx] & SPIRVDebug::FlagAccess) == SPIRVDebug::FlagIsPrivate)
Flags |= llvm::DINode::FlagPrivate;
uint64_t Offset = BM->get<SPIRVConstant>(Ops[OffsetIdx])->getZExtIntValue();
return Builder.createInheritance(Child, Parent, Offset, 0, Flags);
}
DINode *
SPIRVToLLVMDbgTran::transTemplateParameter(const SPIRVExtInst *DebugInst) {
using namespace SPIRVDebug::Operand::TemplateParameter;
const SPIRVWordVec &Ops = DebugInst->getArguments();
assert(Ops.size() >= OperandCount && "Invalid number of operands");
StringRef Name = getString(Ops[NameIdx]);
SPIRVEntry *ActualType = BM->getEntry(Ops[TypeIdx]);
DIType *Ty = nullptr;
if (!isa<OpTypeVoid>(ActualType))
Ty = transDebugInst<DIType>(static_cast<SPIRVExtInst *>(ActualType));
DIScope *Context = nullptr;
if (!getDbgInst<SPIRVDebug::DebugInfoNone>(Ops[ValueIdx])) {
SPIRVValue *Val = BM->get<SPIRVValue>(Ops[ValueIdx]);
Value *V = SPIRVReader->transValue(Val, nullptr, nullptr);
return Builder.createTemplateValueParameter(Context, Name, Ty, false,
cast<Constant>(V));
}
return Builder.createTemplateTypeParameter(Context, Name, Ty, false);
}
DINode *SPIRVToLLVMDbgTran::transTemplateTemplateParameter(
const SPIRVExtInst *DebugInst) {
using namespace SPIRVDebug::Operand::TemplateTemplateParameter;
const SPIRVWordVec &Ops = DebugInst->getArguments();
assert(Ops.size() >= OperandCount && "Invalid number of operands");
StringRef Name = getString(Ops[NameIdx]);
StringRef TemplName = getString(Ops[TemplateNameIdx]);
DIScope *Context = nullptr;
return Builder.createTemplateTemplateParameter(Context, Name, nullptr,
TemplName);
}
DINode *
SPIRVToLLVMDbgTran::transTemplateParameterPack(const SPIRVExtInst *DebugInst) {
using namespace SPIRVDebug::Operand::TemplateParameterPack;
const SPIRVWordVec &Ops = DebugInst->getArguments();
assert(Ops.size() >= MinOperandCount && "Invalid number of operands");
StringRef Name = getString(Ops[NameIdx]);
SmallVector<llvm::Metadata *, 8> Elts;
for (size_t I = FirstParameterIdx, E = Ops.size(); I < E; ++I) {
Elts.push_back(transDebugInst(BM->get<SPIRVExtInst>(Ops[I])));
}
DINodeArray Pack = Builder.getOrCreateArray(Elts);
DIScope *Context = nullptr;
return Builder.createTemplateParameterPack(Context, Name, nullptr, Pack);
}
MDNode *SPIRVToLLVMDbgTran::transTemplate(const SPIRVExtInst *DebugInst) {
using namespace SPIRVDebug::Operand::Template;
const SPIRVWordVec &Ops = DebugInst->getArguments();
const size_t NumOps = Ops.size();
assert(NumOps >= MinOperandCount && "Invalid number of operands");
auto *Templ = BM->get<SPIRVExtInst>(Ops[TargetIdx]);
MDNode *D = transDebugInst(Templ);
SmallVector<llvm::Metadata *, 8> Elts;
for (size_t I = FirstParameterIdx; I < NumOps; ++I) {
Elts.push_back(transDebugInst(BM->get<SPIRVExtInst>(Ops[I])));
}
DINodeArray TParams = Builder.getOrCreateArray(Elts);
if (DICompositeType *Comp = dyn_cast<DICompositeType>(D)) {
Builder.replaceArrays(Comp, Comp->getElements(), TParams);
return Comp;
}
if (isa<DISubprogram>(D)) {
// This constant matches with one used in
// DISubprogram::getRawTemplateParams()
const unsigned TemplateParamsIndex = 9;
D->replaceOperandWith(TemplateParamsIndex, TParams.get());
return D;
}
llvm_unreachable("Invalid template");
}
DINode *SPIRVToLLVMDbgTran::transImportedEntry(const SPIRVExtInst *DebugInst) {
using namespace SPIRVDebug::Operand::ImportedEntity;
const SPIRVWordVec &Ops = DebugInst->getArguments();
assert(Ops.size() >= OperandCount && "Invalid number of operands");
DIScope *Scope = getScope(BM->getEntry(Ops[ParentIdx]));
unsigned Line = Ops[LineIdx];
DIFile *File = getFile(Ops[SourceIdx]);
auto *Entity = transDebugInst<DINode>(BM->get<SPIRVExtInst>(Ops[EntityIdx]));
if (Ops[TagIdx] == SPIRVDebug::ImportedModule) {
if (!Entity)
return Builder.createImportedModule(
Scope, static_cast<DIImportedEntity *>(nullptr), File, Line);
if (DIModule *DM = dyn_cast<DIModule>(Entity))
return Builder.createImportedModule(Scope, DM, File, Line);
if (DIImportedEntity *IE = dyn_cast<DIImportedEntity>(Entity))
return Builder.createImportedModule(Scope, IE, File, Line);
if (DINamespace *NS = dyn_cast<DINamespace>(Entity))
return Builder.createImportedModule(Scope, NS, File, Line);
}
if (Ops[TagIdx] == SPIRVDebug::ImportedDeclaration) {
StringRef Name = getString(Ops[NameIdx]);
if (DIGlobalVariableExpression *GVE =
dyn_cast<DIGlobalVariableExpression>(Entity))
return Builder.createImportedDeclaration(Scope, GVE->getVariable(), File,
Line, Name);
return Builder.createImportedDeclaration(Scope, Entity, File, Line, Name);
}
llvm_unreachable("Unexpected kind of imported entity!");
}
DINode *SPIRVToLLVMDbgTran::transModule(const SPIRVExtInst *DebugInst) {
using namespace SPIRVDebug::Operand::ModuleINTEL;
const SPIRVWordVec &Ops = DebugInst->getArguments();
assert(Ops.size() >= OperandCount && "Invalid number of operands");
DIScope *Scope = getScope(BM->getEntry(Ops[ParentIdx]));
unsigned Line = Ops[LineIdx];
DIFile *File = getFile(Ops[SourceIdx]);
StringRef Name = getString(Ops[NameIdx]);
StringRef ConfigMacros = getString(Ops[ConfigMacrosIdx]);
StringRef IncludePath = getString(Ops[IncludePathIdx]);
StringRef ApiNotes = getString(Ops[ApiNotesIdx]);
bool IsDecl = Ops[IsDeclIdx];
return Builder.createModule(Scope, Name, ConfigMacros, IncludePath, ApiNotes,
File, Line, IsDecl);
}
MDNode *SPIRVToLLVMDbgTran::transExpression(const SPIRVExtInst *DebugInst) {
const SPIRVWordVec &Args = DebugInst->getArguments();
std::vector<uint64_t> Ops;
for (SPIRVId A : Args) {
SPIRVExtInst *O = BM->get<SPIRVExtInst>(A);
const SPIRVWordVec &Operands = O->getArguments();
auto OpCode = static_cast<SPIRVDebug::ExpressionOpCode>(Operands[0]);
Ops.push_back(SPIRV::DbgExpressionOpCodeMap::rmap(OpCode));
for (unsigned I = 1, E = Operands.size(); I < E; ++I) {
Ops.push_back(Operands[I]);
}
}
ArrayRef<uint64_t> Addr(Ops.data(), Ops.size());
return Builder.createExpression(Addr);
}
MDNode *SPIRVToLLVMDbgTran::transDebugInstImpl(const SPIRVExtInst *DebugInst) {
switch (DebugInst->getExtOp()) {
case SPIRVDebug::DebugInfoNone:
return nullptr;
case SPIRVDebug::CompilationUnit:
return transCompileUnit(DebugInst);
case SPIRVDebug::TypeBasic:
return transTypeBasic(DebugInst);
case SPIRVDebug::TypeQualifier:
return transTypeQualifier(DebugInst);
case SPIRVDebug::TypePointer:
return transTypePointer(DebugInst);
case SPIRVDebug::TypeArray:
return transTypeArray(DebugInst);
case SPIRVDebug::TypeVector:
return transTypeVector(DebugInst);
case SPIRVDebug::TypeComposite:
return transTypeComposite(DebugInst);
case SPIRVDebug::TypeMember:
return transTypeMember(DebugInst);
case SPIRVDebug::TypePtrToMember:
return transTypePtrToMember(DebugInst);
case SPIRVDebug::TypeEnum:
return transTypeEnum(DebugInst);
case SPIRVDebug::TypeFunction:
return transTypeFunction(DebugInst);
case SPIRVDebug::LexicalBlock:
return transLexicalBlock(DebugInst);
case SPIRVDebug::LexicalBlockDiscriminator:
return transLexicalBlockDiscriminator(DebugInst);
case SPIRVDebug::Function:
return transFunction(DebugInst);
case SPIRVDebug::FunctionDecl:
return transFunctionDecl(DebugInst);
case SPIRVDebug::GlobalVariable:
return transGlobalVariable(DebugInst);
case SPIRVDebug::LocalVariable:
return transLocalVariable(DebugInst);
case SPIRVDebug::Typedef:
return transTypedef(DebugInst);
case SPIRVDebug::InlinedAt:
return transDebugInlined(DebugInst);
case SPIRVDebug::Inheritance:
return transInheritance(DebugInst);
case SPIRVDebug::TypeTemplateParameter:
return transTemplateParameter(DebugInst);
case SPIRVDebug::TypeTemplateTemplateParameter:
return transTemplateTemplateParameter(DebugInst);
case SPIRVDebug::TypeTemplateParameterPack:
return transTemplateParameterPack(DebugInst);
case SPIRVDebug::TypeTemplate:
return transTemplate(DebugInst);
case SPIRVDebug::ImportedEntity:
return transImportedEntry(DebugInst);
case SPIRVDebug::ModuleINTEL:
return transModule(DebugInst);
case SPIRVDebug::Operation: // To be translated with transExpression
case SPIRVDebug::Source: // To be used by other instructions
return nullptr;
case SPIRVDebug::Expression:
return transExpression(DebugInst);
default:
llvm_unreachable("Not implemented SPIR-V debug instruction!");
}
}
Instruction *
SPIRVToLLVMDbgTran::transDebugIntrinsic(const SPIRVExtInst *DebugInst,
BasicBlock *BB) {
auto GetLocalVar = [&](SPIRVId Id) -> std::pair<DILocalVariable *, DebugLoc> {
auto *LV = transDebugInst<DILocalVariable>(BM->get<SPIRVExtInst>(Id));
DebugLoc DL = DILocation::get(M->getContext(), LV->getLine(),
/*Column=*/0, LV->getScope());
return std::make_pair(LV, DL);
};
auto GetValue = [&](SPIRVId Id) -> Value * {
auto *V = BM->get<SPIRVValue>(Id);
return SPIRVReader->transValue(V, BB->getParent(), BB);
};
auto GetExpression = [&](SPIRVId Id) -> DIExpression * {
return transDebugInst<DIExpression>(BM->get<SPIRVExtInst>(Id));
};
SPIRVWordVec Ops = DebugInst->getArguments();
switch (DebugInst->getExtOp()) {
case SPIRVDebug::Scope:
case SPIRVDebug::NoScope:
return nullptr;
case SPIRVDebug::Declare: {
using namespace SPIRVDebug::Operand::DebugDeclare;
auto LocalVar = GetLocalVar(Ops[DebugLocalVarIdx]);
if (getDbgInst<SPIRVDebug::DebugInfoNone>(Ops[VariableIdx])) {
// If we don't have the variable(e.g. alloca might be promoted by mem2reg)
// we should generate the following IR:
// call void @llvm.dbg.declare(metadata !4, metadata !14, metadata !5)
// !4 = !{}
// DIBuilder::insertDeclare doesn't allow to pass nullptr for the Storage
// parameter. To work around this limitation we create a dummy temp
// alloca, use it to create llvm.dbg.declare, and then remove the alloca.
auto *AI = new AllocaInst(Type::getInt8Ty(M->getContext()), 0, "tmp", BB);
auto *DbgDeclare = Builder.insertDeclare(
AI, LocalVar.first, GetExpression(Ops[ExpressionIdx]),