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LLVMToSPIRVDbgTran.cpp
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//===- LLVMToSPIRVDbgTran.cpp - Converts debug info to SPIR-V ---*- 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 LLVM metadata to SPIR-V
//
//===----------------------------------------------------------------------===//
#include "LLVMToSPIRVDbgTran.h"
#include "SPIRV.debug.h"
#include "SPIRVWriter.h"
#include "llvm/IR/DebugInfo.h"
#include "llvm/IR/DebugInfoMetadata.h"
using namespace SPIRV;
// Public interface
/// This function is looking for debug information in the LLVM module
/// and translates it to SPIRV
void LLVMToSPIRVDbgTran::transDebugMetadata() {
DIF.processModule(*M);
if (DIF.compile_unit_count() == 0)
return;
if (isNonSemanticDebugInfo()) {
if (!BM->isAllowedToUseVersion(VersionNumber::SPIRV_1_6))
BM->addExtension(SPIRV::ExtensionID::SPV_KHR_non_semantic_info);
else
BM->setMinSPIRVVersion(VersionNumber::SPIRV_1_6);
}
for (DICompileUnit *CU : DIF.compile_units()) {
transDbgEntry(CU);
for (DIImportedEntity *IE : CU->getImportedEntities())
transDbgEntry(IE);
}
for (const DIType *T : DIF.types())
transDbgEntry(T);
// When translating a debug lexical block, we expect the translation of its
// parent scope (say it's a subprogram) already been created in MDMap.
// Otherwise, we have to dive into the details of subprogram translation
// first. During this process, we will try to resolve all retainedNodes
// (aka, variables) owned by this subprogram.
// And local variable's scope could be the original lexical block that we
// haven't finish translating yet. In other words, the block hasn't been
// inserted into MDMap cache yet.
// So we try to invoke transDbgEntryImpl on the same lexical block again,
// then we get a duplicated lexical block messing up the debug info.
//
// Scheduling the translation of subprograms ahead of scopes (lexical blocks)
// solves this dependency cycle issue.
for (const DISubprogram *F : DIF.subprograms())
transDbgEntry(F);
for (const DIScope *S : DIF.scopes())
transDbgEntry(S);
for (const DIGlobalVariableExpression *G : DIF.global_variables()) {
transDbgEntry(G->getVariable());
}
for (const DbgVariableIntrinsic *DDI : DbgDeclareIntrinsics)
finalizeDebugDeclare(DDI);
for (const DbgVariableIntrinsic *DVI : DbgValueIntrinsics)
finalizeDebugValue(DVI);
transLocationInfo();
}
// llvm.dbg.declare intrinsic.
SPIRVValue *LLVMToSPIRVDbgTran::createDebugDeclarePlaceholder(
const DbgVariableIntrinsic *DbgDecl, SPIRVBasicBlock *BB) {
DbgDeclareIntrinsics.push_back(DbgDecl);
using namespace SPIRVDebug::Operand::DebugDeclare;
SPIRVWordVec Ops(OperandCount, getDebugInfoNoneId());
SPIRVId ExtSetId = BM->getExtInstSetId(BM->getDebugInfoEIS());
return BM->addExtInst(getVoidTy(), ExtSetId, SPIRVDebug::Declare, Ops, BB);
}
void LLVMToSPIRVDbgTran::finalizeDebugDeclare(
const DbgVariableIntrinsic *DbgDecl) {
SPIRVValue *V = SPIRVWriter->getTranslatedValue(DbgDecl);
assert(V && "llvm.dbg.declare intrinsic isn't mapped to a SPIRV instruction");
assert(V->isExtInst(BM->getDebugInfoEIS(), SPIRVDebug::Declare) &&
"llvm.dbg.declare intrinsic has been translated wrong!");
if (!V || !V->isExtInst(BM->getDebugInfoEIS(), SPIRVDebug::Declare))
return;
SPIRVExtInst *DD = static_cast<SPIRVExtInst *>(V);
SPIRVBasicBlock *BB = DD->getBasicBlock();
llvm::Value *Alloca = DbgDecl->getVariableLocationOp(0);
using namespace SPIRVDebug::Operand::DebugDeclare;
SPIRVWordVec Ops(OperandCount);
Ops[DebugLocalVarIdx] = transDbgEntry(DbgDecl->getVariable())->getId();
Ops[VariableIdx] = Alloca ? SPIRVWriter->transValue(Alloca, BB)->getId()
: getDebugInfoNoneId();
Ops[ExpressionIdx] = transDbgEntry(DbgDecl->getExpression())->getId();
DD->setArguments(Ops);
}
// llvm.dbg.value intrinsic.
SPIRVValue *LLVMToSPIRVDbgTran::createDebugValuePlaceholder(
const DbgVariableIntrinsic *DbgValue, SPIRVBasicBlock *BB) {
if (!DbgValue->getVariableLocationOp(0))
return nullptr; // It is pointless without new value
DbgValueIntrinsics.push_back(DbgValue);
using namespace SPIRVDebug::Operand::DebugValue;
SPIRVWordVec Ops(MinOperandCount, getDebugInfoNone()->getId());
SPIRVId ExtSetId = BM->getExtInstSetId(BM->getDebugInfoEIS());
return BM->addExtInst(getVoidTy(), ExtSetId, SPIRVDebug::Value, Ops, BB);
}
void LLVMToSPIRVDbgTran::finalizeDebugValue(
const DbgVariableIntrinsic *DbgValue) {
SPIRVValue *V = SPIRVWriter->getTranslatedValue(DbgValue);
assert(V && "llvm.dbg.value intrinsic isn't mapped to a SPIRV instruction");
assert(V->isExtInst(BM->getDebugInfoEIS(), SPIRVDebug::Value) &&
"llvm.dbg.value intrinsic has been translated wrong!");
if (!V || !V->isExtInst(BM->getDebugInfoEIS(), SPIRVDebug::Value))
return;
SPIRVExtInst *DV = static_cast<SPIRVExtInst *>(V);
SPIRVBasicBlock *BB = DV->getBasicBlock();
Value *Val = DbgValue->getVariableLocationOp(0);
DIExpression *Expr = DbgValue->getExpression();
if (!isNonSemanticDebugInfo()) {
if (DbgValue->getNumVariableLocationOps() > 1) {
Val = UndefValue::get(Val->getType());
Expr = DIExpression::get(M->getContext(), {});
}
}
using namespace SPIRVDebug::Operand::DebugValue;
SPIRVWordVec Ops(MinOperandCount);
Ops[DebugLocalVarIdx] = transDbgEntry(DbgValue->getVariable())->getId();
Ops[ValueIdx] = SPIRVWriter->transValue(Val, BB)->getId();
Ops[ExpressionIdx] = transDbgEntry(Expr)->getId();
DV->setArguments(Ops);
}
// Emitting DebugScope and OpLine instructions
void LLVMToSPIRVDbgTran::transLocationInfo() {
for (const Function &F : *M) {
for (const BasicBlock &BB : F) {
SPIRVValue *V = SPIRVWriter->getTranslatedValue(&BB);
assert(V && V->isBasicBlock() &&
"Basic block is expected to be translated");
SPIRVBasicBlock *SBB = static_cast<SPIRVBasicBlock *>(V);
MDNode *DbgScope = nullptr;
MDNode *InlinedAt = nullptr;
SPIRVString *File = nullptr;
unsigned LineNo = 0;
unsigned Col = 0;
for (const Instruction &I : BB) {
if (auto *II = dyn_cast<IntrinsicInst>(&I)) {
if (II->getIntrinsicID() == Intrinsic::dbg_label) {
// SPIR-V doesn't support llvm.dbg.label intrinsic translation
continue;
}
if (II->getIntrinsicID() == Intrinsic::annotation ||
II->getIntrinsicID() == Intrinsic::var_annotation ||
II->getIntrinsicID() == Intrinsic::ptr_annotation) {
// llvm call instruction for llvm .*annotation intrinsics
// is translated into SPIR-V instruction only if it represents
// call of __builtin_intel_fpga_reg() builtin. In other cases this
// instruction is dropped. In these cases debug info for this call
// should be skipped too.
// TODO: Remove skipping of debug info when *.annotation call will
// be handled in a better way during SPIR-V translation.
V = SPIRVWriter->getTranslatedValue(&I);
if (!V || V->getOpCode() != OpFPGARegINTEL)
continue;
}
}
V = SPIRVWriter->getTranslatedValue(&I);
if (!V || isConstantOpCode(V->getOpCode()))
continue;
const DebugLoc &DL = I.getDebugLoc();
if (!DL.get()) {
if (DbgScope || InlinedAt) { // Emit DebugNoScope
DbgScope = nullptr;
InlinedAt = nullptr;
transDebugLoc(DL, SBB, static_cast<SPIRVInstruction *>(V));
}
continue;
}
// Once scope or inlining has changed emit another DebugScope
if (DL.getScope() != DbgScope || DL.getInlinedAt() != InlinedAt) {
DbgScope = DL.getScope();
InlinedAt = DL.getInlinedAt();
transDebugLoc(DL, SBB, static_cast<SPIRVInstruction *>(V));
}
// If any component of OpLine has changed emit another OpLine
SPIRVString *DirAndFile = BM->getString(getFullPath(DL.get()));
if (File != DirAndFile || LineNo != DL.getLine() ||
Col != DL.getCol()) {
File = DirAndFile;
LineNo = DL.getLine();
Col = DL.getCol();
// According to the spec, OpLine for an OpBranch/OpBranchConditional
// must precede the merge instruction and not the branch instruction
if (V->getOpCode() == OpBranch ||
V->getOpCode() == OpBranchConditional) {
auto *VPrev = static_cast<SPIRVInstruction *>(V)->getPrevious();
if (VPrev && (VPrev->getOpCode() == OpLoopMerge ||
VPrev->getOpCode() == OpLoopControlINTEL)) {
V = VPrev;
}
}
if (BM->getDebugInfoEIS() ==
SPIRVEIS_NonSemantic_Shader_DebugInfo_100 ||
BM->getDebugInfoEIS() ==
SPIRVEIS_NonSemantic_Shader_DebugInfo_200)
BM->addDebugLine(V, getVoidTy(),
File ? File->getId() : getDebugInfoNoneId(),
LineNo, LineNo, Col, Col + 1);
else
BM->addLine(V, File ? File->getId() : getDebugInfoNoneId(), LineNo,
Col);
}
} // Instructions
// Reset current debug line at end of basic block.
BM->setCurrentDebugLine(nullptr);
} // Basic Blocks
} // Functions
}
// Translation of single debug entry
SPIRVEntry *LLVMToSPIRVDbgTran::transDbgEntry(const MDNode *DIEntry) {
// Caching
auto It = MDMap.find(DIEntry);
if (It != MDMap.end()) {
assert(It->second && "Invalid SPIRVEntry is cached!");
return It->second;
}
SPIRVEntry *Res = transDbgEntryImpl(DIEntry);
assert(Res && "Translation failure");
// We might end up having a recursive debug info generation like the
// following:
// translation of DIDerivedType (member) calls DICompositeType translation
// as its parent scope;
// translation of DICompositeType calls translation of its members
// (DIDerivedType with member tag).
// Here we make only the latest of these instructions be cached and hence
// reused
// FIXME: find a way to not create dead instruction
if (MDMap[DIEntry])
return MDMap[DIEntry];
MDMap[DIEntry] = Res;
return Res;
}
// Dispatcher implementation
SPIRVEntry *LLVMToSPIRVDbgTran::transDbgEntryImpl(const MDNode *MDN) {
if (!MDN)
return BM->addDebugInfo(SPIRVDebug::DebugInfoNone, getVoidTy(),
SPIRVWordVec());
if (const DINode *DIEntry = dyn_cast<DINode>(MDN)) {
switch (DIEntry->getTag()) {
// Types
case dwarf::DW_TAG_base_type:
case dwarf::DW_TAG_unspecified_type:
return transDbgBaseType(cast<DIBasicType>(DIEntry));
case dwarf::DW_TAG_reference_type:
case dwarf::DW_TAG_rvalue_reference_type:
case dwarf::DW_TAG_pointer_type:
return transDbgPointerType(cast<DIDerivedType>(DIEntry));
case dwarf::DW_TAG_array_type:
return transDbgArrayType(cast<DICompositeType>(DIEntry));
case dwarf::DW_TAG_subrange_type:
if (BM->getDebugInfoEIS() == SPIRVEIS_NonSemantic_Shader_DebugInfo_200)
return transDbgSubrangeType(cast<DISubrange>(DIEntry));
else
return getDebugInfoNone();
case dwarf::DW_TAG_string_type: {
if (BM->getDebugInfoEIS() == SPIRVEIS_NonSemantic_Shader_DebugInfo_200)
return transDbgStringType(cast<DIStringType>(DIEntry));
return getDebugInfoNone();
}
case dwarf::DW_TAG_const_type:
case dwarf::DW_TAG_restrict_type:
case dwarf::DW_TAG_volatile_type:
case dwarf::DW_TAG_atomic_type:
return transDbgQualifiedType(cast<DIDerivedType>(DIEntry));
case dwarf::DW_TAG_subroutine_type:
return transDbgSubroutineType(cast<DISubroutineType>(DIEntry));
case dwarf::DW_TAG_class_type:
case dwarf::DW_TAG_structure_type:
case dwarf::DW_TAG_union_type:
return transDbgCompositeType(cast<DICompositeType>(DIEntry));
case dwarf::DW_TAG_member:
return transDbgMemberType(cast<DIDerivedType>(DIEntry));
case dwarf::DW_TAG_inheritance:
return transDbgInheritance(cast<DIDerivedType>(DIEntry));
case dwarf::DW_TAG_enumeration_type:
return transDbgEnumType(cast<DICompositeType>(DIEntry));
case dwarf::DW_TAG_file_type:
return transDbgFileType(cast<DIFile>(DIEntry));
case dwarf::DW_TAG_typedef:
return transDbgTypeDef(cast<DIDerivedType>(DIEntry));
case dwarf::DW_TAG_ptr_to_member_type:
return transDbgPtrToMember(cast<DIDerivedType>(DIEntry));
// Scope
case dwarf::DW_TAG_namespace:
case dwarf::DW_TAG_lexical_block:
return transDbgScope(cast<DIScope>(DIEntry));
// Function
case dwarf::DW_TAG_subprogram:
return transDbgFunction(cast<DISubprogram>(DIEntry));
// Variables
case dwarf::DW_TAG_variable:
if (const DILocalVariable *LV = dyn_cast<DILocalVariable>(DIEntry))
return transDbgLocalVariable(LV);
if (const DIGlobalVariable *GV = dyn_cast<DIGlobalVariable>(DIEntry))
return transDbgGlobalVariable(GV);
if (const DIDerivedType *MT = dyn_cast<DIDerivedType>(DIEntry))
if (M->getDwarfVersion() >= 5 && MT->isStaticMember())
return transDbgMemberType(MT);
llvm_unreachable("Unxpected debug info type for variable");
case dwarf::DW_TAG_formal_parameter:
return transDbgLocalVariable(cast<DILocalVariable>(DIEntry));
// Compilation unit
case dwarf::DW_TAG_compile_unit:
return transDbgCompileUnit(cast<DICompileUnit>(DIEntry));
// Templates
case dwarf::DW_TAG_template_type_parameter:
case dwarf::DW_TAG_template_value_parameter:
return transDbgTemplateParameter(cast<DITemplateParameter>(DIEntry));
case dwarf::DW_TAG_GNU_template_template_param:
return transDbgTemplateTemplateParameter(
cast<DITemplateValueParameter>(DIEntry));
case dwarf::DW_TAG_GNU_template_parameter_pack:
return transDbgTemplateParameterPack(
cast<DITemplateValueParameter>(DIEntry));
case dwarf::DW_TAG_imported_module:
case dwarf::DW_TAG_imported_declaration:
return transDbgImportedEntry(cast<DIImportedEntity>(DIEntry));
case dwarf::DW_TAG_module: {
if (BM->isAllowedToUseExtension(ExtensionID::SPV_INTEL_debug_module) ||
BM->getDebugInfoEIS() == SPIRVEIS_NonSemantic_Shader_DebugInfo_200)
return transDbgModule(cast<DIModule>(DIEntry));
return getDebugInfoNone();
}
default:
return getDebugInfoNone();
}
}
if (const DIExpression *Expr = dyn_cast<DIExpression>(MDN))
return transDbgExpression(Expr);
if (const DILocation *Loc = dyn_cast<DILocation>(MDN)) {
return transDbgInlinedAt(Loc);
}
llvm_unreachable("Not implemented debug info entry!");
}
// Helper methods
SPIRVType *LLVMToSPIRVDbgTran::getVoidTy() {
if (!VoidT) {
assert(M && "Pointer to LLVM Module is expected to be initialized!");
// Cache void type in a member.
VoidT = SPIRVWriter->transType(Type::getVoidTy(M->getContext()));
}
return VoidT;
}
SPIRVType *LLVMToSPIRVDbgTran::getInt32Ty() {
if (!Int32T) {
assert(M && "Pointer to LLVM Module is expected to be initialized!");
// Cache int32 type in a member.
Int32T = SPIRVWriter->transType(Type::getInt32Ty(M->getContext()));
}
return Int32T;
}
SPIRVEntry *LLVMToSPIRVDbgTran::getScope(DIScope *S) {
if (S)
return transDbgEntry(S);
assert(!SPIRVCUMap.empty() &&
"Compile units are expected to be already translated");
return SPIRVCUMap.begin()->second;
}
SPIRVEntry *LLVMToSPIRVDbgTran::getGlobalVariable(const DIGlobalVariable *GV) {
for (GlobalVariable &V : M->globals()) {
SmallVector<DIGlobalVariableExpression *, 4> GVs;
V.getDebugInfo(GVs);
for (DIGlobalVariableExpression *GVE : GVs) {
if (GVE->getVariable() == GV)
return SPIRVWriter->transValue(&V, nullptr);
}
}
return getDebugInfoNone();
}
inline bool LLVMToSPIRVDbgTran::isNonSemanticDebugInfo() {
return (BM->getDebugInfoEIS() == SPIRVEIS_NonSemantic_Shader_DebugInfo_100 ||
BM->getDebugInfoEIS() == SPIRVEIS_NonSemantic_Shader_DebugInfo_200);
}
void LLVMToSPIRVDbgTran::transformToConstant(std::vector<SPIRVWord> &Ops,
std::vector<SPIRVWord> Idxs) {
for (const auto Idx : Idxs) {
SPIRVValue *Const = BM->addIntegerConstant(
static_cast<SPIRVTypeInt *>(getInt32Ty()), Ops[Idx]);
Ops[Idx] = Const->getId();
}
}
SPIRVWord LLVMToSPIRVDbgTran::mapDebugFlags(DINode::DIFlags DFlags) {
SPIRVWord Flags = 0;
if ((DFlags & DINode::FlagAccessibility) == DINode::FlagPublic)
Flags |= SPIRVDebug::FlagIsPublic;
if ((DFlags & DINode::FlagAccessibility) == DINode::FlagProtected)
Flags |= SPIRVDebug::FlagIsProtected;
if ((DFlags & DINode::FlagAccessibility) == DINode::FlagPrivate)
Flags |= SPIRVDebug::FlagIsPrivate;
if (DFlags & DINode::FlagFwdDecl)
Flags |= SPIRVDebug::FlagIsFwdDecl;
if (DFlags & DINode::FlagArtificial)
Flags |= SPIRVDebug::FlagIsArtificial;
if (DFlags & DINode::FlagExplicit)
Flags |= SPIRVDebug::FlagIsExplicit;
if (DFlags & DINode::FlagPrototyped)
Flags |= SPIRVDebug::FlagIsPrototyped;
if (DFlags & DINode::FlagObjectPointer)
Flags |= SPIRVDebug::FlagIsObjectPointer;
if (DFlags & DINode::FlagStaticMember)
Flags |= SPIRVDebug::FlagIsStaticMember;
// inderect variable flag ?
if (DFlags & DINode::FlagLValueReference)
Flags |= SPIRVDebug::FlagIsLValueReference;
if (DFlags & DINode::FlagRValueReference)
Flags |= SPIRVDebug::FlagIsRValueReference;
if (DFlags & DINode::FlagTypePassByValue)
Flags |= SPIRVDebug::FlagTypePassByValue;
if (DFlags & DINode::FlagTypePassByReference)
Flags |= SPIRVDebug::FlagTypePassByReference;
if (BM->getDebugInfoEIS() == SPIRVEIS_NonSemantic_Shader_DebugInfo_200)
if (DFlags & DINode::FlagBitField)
Flags |= SPIRVDebug::FlagBitField;
return Flags;
}
SPIRVWord LLVMToSPIRVDbgTran::transDebugFlags(const DINode *DN) {
SPIRVWord Flags = 0;
if (const DIGlobalVariable *GV = dyn_cast<DIGlobalVariable>(DN)) {
if (GV->isLocalToUnit())
Flags |= SPIRVDebug::FlagIsLocal;
if (GV->isDefinition())
Flags |= SPIRVDebug::FlagIsDefinition;
}
if (const DISubprogram *DS = dyn_cast<DISubprogram>(DN)) {
if (DS->isLocalToUnit())
Flags |= SPIRVDebug::FlagIsLocal;
if (DS->isOptimized())
Flags |= SPIRVDebug::FlagIsOptimized;
if (DS->isDefinition())
Flags |= SPIRVDebug::FlagIsDefinition;
Flags |= mapDebugFlags(DS->getFlags());
}
if (DN->getTag() == dwarf::DW_TAG_reference_type)
Flags |= SPIRVDebug::FlagIsLValueReference;
if (DN->getTag() == dwarf::DW_TAG_rvalue_reference_type)
Flags |= SPIRVDebug::FlagIsRValueReference;
if (const DIType *DT = dyn_cast<DIType>(DN))
Flags |= mapDebugFlags(DT->getFlags());
if (const DILocalVariable *DLocVar = dyn_cast<DILocalVariable>(DN))
Flags |= mapDebugFlags(DLocVar->getFlags());
return Flags;
}
/// Clang doesn't emit access flags for members with default access specifier
/// See clang/lib/CodeGen/CGDebugInfo.cpp: getAccessFlag()
/// In SPIR-V we set the flags even for members with default access specifier
SPIRVWord adjustAccessFlags(DIScope *Scope, SPIRVWord Flags) {
if (Scope && (Flags & SPIRVDebug::FlagAccess) == 0) {
unsigned Tag = Scope->getTag();
if (Tag == dwarf::DW_TAG_class_type)
Flags |= SPIRVDebug::FlagIsPrivate;
else if (Tag == dwarf::DW_TAG_structure_type ||
Tag == dwarf::DW_TAG_union_type)
Flags |= SPIRVDebug::FlagIsPublic;
}
return Flags;
}
// Fortran dynamic arrays can have following 'dataLocation', 'associated'
// 'allocated' and 'rank' debug metadata. Such arrays are being mapped on
// DebugTypeArrayDynamic from NonSemantic.Shader.200 debug spec
inline bool isFortranArrayDynamic(const DICompositeType *AT) {
return (AT->getRawDataLocation() || AT->getRawAssociated() ||
AT->getRawAllocated() || AT->getRawRank());
}
/// The following methods (till the end of the file) implement translation of
/// debug instrtuctions described in the spec.
// Absent Debug Info
SPIRVEntry *LLVMToSPIRVDbgTran::getDebugInfoNone() {
if (!DebugInfoNone) {
DebugInfoNone = transDbgEntry(nullptr);
}
return DebugInfoNone;
}
SPIRVId LLVMToSPIRVDbgTran::getDebugInfoNoneId() {
return getDebugInfoNone()->getId();
}
// Compilation unit
SPIRVEntry *LLVMToSPIRVDbgTran::transDbgCompileUnit(const DICompileUnit *CU) {
using namespace SPIRVDebug::Operand::CompilationUnit;
SPIRVWordVec Ops(MinOperandCount);
Ops[SPIRVDebugInfoVersionIdx] = SPIRVDebug::DebugInfoVersion;
Ops[DWARFVersionIdx] = M->getDwarfVersion();
Ops[SourceIdx] = getSource(CU)->getId();
if (isNonSemanticDebugInfo())
generateBuildIdentifierAndStoragePath(CU);
auto DwarfLang =
static_cast<llvm::dwarf::SourceLanguage>(CU->getSourceLanguage());
Ops[LanguageIdx] =
BM->getDebugInfoEIS() == SPIRVEIS_NonSemantic_Shader_DebugInfo_200
? convertDWARFSourceLangToSPIRVNonSemanticDbgInfo(DwarfLang)
: convertDWARFSourceLangToSPIRV(DwarfLang);
if (isNonSemanticDebugInfo())
transformToConstant(
Ops, {SPIRVDebugInfoVersionIdx, DWARFVersionIdx, LanguageIdx});
if (isNonSemanticDebugInfo()) {
if (BM->getDebugInfoEIS() == SPIRVEIS_NonSemantic_Shader_DebugInfo_200) {
Ops.push_back(BM->getString(CU->getProducer().str())->getId());
}
} else {
// TODO: Remove this workaround once we switch to NonSemantic.Shader.* debug
// info by default
BM->addModuleProcessed(SPIRVDebug::ProducerPrefix +
CU->getProducer().str());
}
// Cache CU in a member.
SPIRVCUMap[CU] = static_cast<SPIRVExtInst *>(
BM->addDebugInfo(SPIRVDebug::CompilationUnit, getVoidTy(), Ops));
return SPIRVCUMap[CU];
}
// Types
SPIRVEntry *LLVMToSPIRVDbgTran::transDbgBaseType(const DIBasicType *BT) {
using namespace SPIRVDebug::Operand::TypeBasic;
SPIRVWordVec Ops(OperandCountOCL);
Ops[NameIdx] = BM->getString(BT->getName().str())->getId();
ConstantInt *Size = getUInt(M, BT->getSizeInBits());
Ops[SizeIdx] = SPIRVWriter->transValue(Size, nullptr)->getId();
auto Encoding = static_cast<dwarf::TypeKind>(BT->getEncoding());
SPIRVDebug::EncodingTag EncTag = SPIRVDebug::Unspecified;
SPIRV::DbgEncodingMap::find(Encoding, &EncTag);
// Unset encoding if it's complex and NonSemantic.Shader.DebugInfo.200 is not
// enabled
if (EncTag == SPIRVDebug::Complex &&
BM->getDebugInfoEIS() != SPIRVEIS_NonSemantic_Shader_DebugInfo_200)
EncTag = SPIRVDebug::Unspecified;
Ops[EncodingIdx] = EncTag;
if (isNonSemanticDebugInfo()) {
transformToConstant(Ops, {EncodingIdx});
// Flags value could not be generated by clang or by LLVM environment.
Ops.push_back(getDebugInfoNoneId());
}
return BM->addDebugInfo(SPIRVDebug::TypeBasic, getVoidTy(), Ops);
}
SPIRVEntry *LLVMToSPIRVDbgTran::transDbgPointerType(const DIDerivedType *PT) {
using namespace SPIRVDebug::Operand::TypePointer;
SPIRVWordVec Ops(OperandCount);
SPIRVEntry *Base = transDbgEntry(PT->getBaseType());
Ops[BaseTypeIdx] = Base->getId();
Ops[StorageClassIdx] = ~0U; // all ones denote no address space
std::optional<unsigned> AS = PT->getDWARFAddressSpace();
if (AS.has_value()) {
SPIRAddressSpace SPIRAS = static_cast<SPIRAddressSpace>(AS.value());
Ops[StorageClassIdx] = SPIRSPIRVAddrSpaceMap::map(SPIRAS);
}
Ops[FlagsIdx] = transDebugFlags(PT);
if (isNonSemanticDebugInfo())
transformToConstant(Ops, {StorageClassIdx, FlagsIdx});
SPIRVEntry *Res = BM->addDebugInfo(SPIRVDebug::TypePointer, getVoidTy(), Ops);
return Res;
}
SPIRVEntry *LLVMToSPIRVDbgTran::transDbgQualifiedType(const DIDerivedType *QT) {
using namespace SPIRVDebug::Operand::TypeQualifier;
SPIRVWordVec Ops(OperandCount);
SPIRVEntry *Base = transDbgEntry(QT->getBaseType());
Ops[BaseTypeIdx] = Base->getId();
Ops[QualifierIdx] = SPIRV::DbgTypeQulifierMap::map(
static_cast<llvm::dwarf::Tag>(QT->getTag()));
if (isNonSemanticDebugInfo())
transformToConstant(Ops, {QualifierIdx});
return BM->addDebugInfo(SPIRVDebug::TypeQualifier, getVoidTy(), Ops);
}
SPIRVEntry *LLVMToSPIRVDbgTran::transDbgArrayType(const DICompositeType *AT) {
if (BM->getDebugInfoEIS() == SPIRVEIS_NonSemantic_Shader_DebugInfo_200) {
if (isFortranArrayDynamic(AT))
return transDbgArrayTypeDynamic(AT);
return transDbgArrayTypeNonSemantic(AT);
}
return transDbgArrayTypeOpenCL(AT);
}
SPIRVEntry *
LLVMToSPIRVDbgTran::transDbgArrayTypeOpenCL(const DICompositeType *AT) {
using namespace SPIRVDebug::Operand::TypeArray;
SPIRVWordVec Ops(MinOperandCount);
Ops[BaseTypeIdx] = transDbgEntry(AT->getBaseType())->getId();
DINodeArray AR(AT->getElements());
// For N-dimensianal arrays AR.getNumElements() == N
const unsigned N = AR.size();
Ops.resize(ComponentCountIdx + N);
SPIRVWordVec LowerBounds(N);
for (unsigned I = 0; I < N; ++I) {
DISubrange *SR = cast<DISubrange>(AR[I]);
ConstantInt *Count = SR->getCount().get<ConstantInt *>();
if (AT->isVector()) {
assert(N == 1 && "Multidimensional vector is not expected!");
Ops[ComponentCountIdx] = static_cast<SPIRVWord>(Count->getZExtValue());
if (isNonSemanticDebugInfo())
transformToConstant(Ops, {ComponentCountIdx});
return BM->addDebugInfo(SPIRVDebug::TypeVector, getVoidTy(), Ops);
}
if (Count) {
Ops[ComponentCountIdx + I] =
SPIRVWriter->transValue(Count, nullptr)->getId();
} else {
if (auto *UpperBound = dyn_cast<MDNode>(SR->getRawUpperBound()))
Ops[ComponentCountIdx + I] = transDbgEntry(UpperBound)->getId();
else
Ops[ComponentCountIdx + I] = getDebugInfoNoneId();
}
if (auto *RawLB = SR->getRawLowerBound()) {
if (auto *DIExprLB = dyn_cast<MDNode>(RawLB))
LowerBounds[I] = transDbgEntry(DIExprLB)->getId();
else {
ConstantInt *ConstIntLB = SR->getLowerBound().get<ConstantInt *>();
LowerBounds[I] = SPIRVWriter->transValue(ConstIntLB, nullptr)->getId();
}
} else {
LowerBounds[I] = getDebugInfoNoneId();
}
}
Ops.insert(Ops.end(), LowerBounds.begin(), LowerBounds.end());
return BM->addDebugInfo(SPIRVDebug::TypeArray, getVoidTy(), Ops);
}
SPIRVEntry *
LLVMToSPIRVDbgTran::transDbgArrayTypeNonSemantic(const DICompositeType *AT) {
using namespace SPIRVDebug::Operand::TypeArray;
SPIRVWordVec Ops(MinOperandCount);
Ops[BaseTypeIdx] = transDbgEntry(AT->getBaseType())->getId();
DINodeArray AR(AT->getElements());
// For N-dimensianal arrays AR.getNumElements() == N
const unsigned N = AR.size();
Ops.resize(SubrangesIdx + N);
for (unsigned I = 0; I < N; ++I) {
DISubrange *SR = cast<DISubrange>(AR[I]);
ConstantInt *Count = SR->getCount().get<ConstantInt *>();
if (AT->isVector()) {
assert(N == 1 && "Multidimensional vector is not expected!");
Ops[ComponentCountIdx] = static_cast<SPIRVWord>(Count->getZExtValue());
if (isNonSemanticDebugInfo())
transformToConstant(Ops, {ComponentCountIdx});
return BM->addDebugInfo(SPIRVDebug::TypeVector, getVoidTy(), Ops);
}
Ops[SubrangesIdx + I] = transDbgEntry(SR)->getId();
}
return BM->addDebugInfo(SPIRVDebug::TypeArray, getVoidTy(), Ops);
}
// The function is used to translate Fortran's dynamic arrays
SPIRVEntry *
LLVMToSPIRVDbgTran::transDbgArrayTypeDynamic(const DICompositeType *AT) {
using namespace SPIRVDebug::Operand::TypeArrayDynamic;
SPIRVWordVec Ops(MinOperandCount);
Ops[BaseTypeIdx] = transDbgEntry(AT->getBaseType())->getId();
// DataLocation, Associated, Allocated and Rank can be either DIExpression
// metadata or DIVariable
auto TransOperand = [&](llvm::Metadata *DIMD) -> SPIRVWord {
if (auto *DIExpr = dyn_cast_or_null<DIExpression>(DIMD))
return transDbgExpression(DIExpr)->getId();
if (auto *DIVar = dyn_cast_or_null<DIVariable>(DIMD)) {
if (const DILocalVariable *LV = dyn_cast<DILocalVariable>(DIVar))
return transDbgLocalVariable(LV)->getId();
if (const DIGlobalVariable *GV = dyn_cast<DIGlobalVariable>(DIVar))
return transDbgGlobalVariable(GV)->getId();
}
return getDebugInfoNoneId();
};
Ops[DataLocationIdx] = TransOperand(AT->getRawDataLocation());
Ops[AssociatedIdx] = TransOperand(AT->getRawAssociated());
Ops[AllocatedIdx] = TransOperand(AT->getRawAllocated());
Ops[RankIdx] = TransOperand(AT->getRawRank());
DINodeArray AR(AT->getElements());
// For N-dimensianal arrays AR.getNumElements() == N
const unsigned N = AR.size();
Ops.resize(SubrangesIdx + N);
for (unsigned I = 0; I < N; ++I) {
DISubrange *SR = cast<DISubrange>(AR[I]);
Ops[SubrangesIdx + I] = transDbgEntry(SR)->getId();
}
return BM->addDebugInfo(SPIRVDebug::TypeArrayDynamic, getVoidTy(), Ops);
}
SPIRVEntry *LLVMToSPIRVDbgTran::transDbgSubrangeType(const DISubrange *ST) {
using namespace SPIRVDebug::Operand::TypeSubrange;
SPIRVWordVec Ops(MinOperandCount);
auto TransOperand = [&Ops, this, ST](int Idx) -> void {
Metadata *RawNode = nullptr;
switch (Idx) {
case LowerBoundIdx:
RawNode = ST->getRawLowerBound();
break;
case UpperBoundIdx:
RawNode = ST->getRawUpperBound();
break;
case CountIdx:
RawNode = ST->getRawCountNode();
break;
}
if (!RawNode) {
Ops[Idx] = getDebugInfoNoneId();
return;
}
if (auto *Node = dyn_cast<MDNode>(RawNode)) {
Ops[Idx] = transDbgEntry(Node)->getId();
} else {
ConstantInt *IntNode = nullptr;
switch (Idx) {
case LowerBoundIdx:
IntNode = ST->getLowerBound().get<ConstantInt *>();
break;
case UpperBoundIdx:
IntNode = ST->getUpperBound().get<ConstantInt *>();
break;
case CountIdx:
IntNode = ST->getCount().get<ConstantInt *>();
break;
}
Ops[Idx] = IntNode ? SPIRVWriter->transValue(IntNode, nullptr)->getId()
: getDebugInfoNoneId();
}
};
for (int Idx = 0; Idx < MinOperandCount; ++Idx)
TransOperand(Idx);
if (auto *RawNode = ST->getRawStride()) {
Ops.resize(MaxOperandCount);
if (auto *Node = dyn_cast<MDNode>(RawNode))
Ops[StrideIdx] = transDbgEntry(Node)->getId();
else
Ops[StrideIdx] =
SPIRVWriter->transValue(ST->getStride().get<ConstantInt *>(), nullptr)
->getId();
}
return BM->addDebugInfo(SPIRVDebug::TypeSubrange, getVoidTy(), Ops);
}
SPIRVEntry *LLVMToSPIRVDbgTran::transDbgStringType(const DIStringType *ST) {
using namespace SPIRVDebug::Operand::TypeString;
SPIRVWordVec Ops(MinOperandCount);
Ops[NameIdx] = BM->getString(ST->getName().str())->getId();
Ops[BaseTypeIdx] = ST->getEncoding()
? getDebugInfoNoneId() /*TODO: replace with basetype*/
: getDebugInfoNoneId();
auto TransOperand = [&](llvm::Metadata *DIMD) -> SPIRVWord {
if (auto *DIExpr = dyn_cast_or_null<DIExpression>(DIMD))
return transDbgExpression(DIExpr)->getId();
if (auto *DIVar = dyn_cast_or_null<DIVariable>(DIMD)) {
if (const DILocalVariable *LV = dyn_cast<DILocalVariable>(DIVar))
return transDbgLocalVariable(LV)->getId();
if (const DIGlobalVariable *GV = dyn_cast<DIGlobalVariable>(DIVar))
return transDbgGlobalVariable(GV)->getId();
}
return getDebugInfoNoneId();
};
Ops[DataLocationIdx] = TransOperand(ST->getRawStringLocationExp());
ConstantInt *Size = getUInt(M, ST->getSizeInBits());
Ops[SizeIdx] = SPIRVWriter->transValue(Size, nullptr)->getId();
if (auto *StrLengthExp = ST->getRawStringLengthExp()) {
Ops[LengthAddrIdx] = TransOperand(StrLengthExp);
} else if (auto *StrLengthVar = ST->getRawStringLength()) {
Ops[LengthAddrIdx] = TransOperand(StrLengthVar);
} else {
Ops[LengthAddrIdx] = getDebugInfoNoneId();
}
return BM->addDebugInfo(SPIRVDebug::TypeString, getVoidTy(), Ops);
}
SPIRVEntry *LLVMToSPIRVDbgTran::transDbgTypeDef(const DIDerivedType *DT) {
using namespace SPIRVDebug::Operand::Typedef;
SPIRVWordVec Ops(OperandCount);
Ops[NameIdx] = BM->getString(DT->getName().str())->getId();
SPIRVEntry *BaseTy = transDbgEntry(DT->getBaseType());
assert(BaseTy && "Couldn't translate base type!");
Ops[BaseTypeIdx] = BaseTy->getId();
Ops[SourceIdx] = getSource(DT)->getId();
Ops[LineIdx] = 0; // This version of DIDerivedType has no line number
Ops[ColumnIdx] = 0; // This version of DIDerivedType has no column number
SPIRVEntry *Scope = getScope(DT->getScope());
assert(Scope && "Couldn't translate scope!");
Ops[ParentIdx] = Scope->getId();
if (isNonSemanticDebugInfo())
transformToConstant(Ops, {LineIdx, ColumnIdx});
return BM->addDebugInfo(SPIRVDebug::Typedef, getVoidTy(), Ops);
}
SPIRVEntry *
LLVMToSPIRVDbgTran::transDbgSubroutineType(const DISubroutineType *FT) {
using namespace SPIRVDebug::Operand::TypeFunction;
SPIRVWordVec Ops(MinOperandCount);
Ops[FlagsIdx] = transDebugFlags(FT);
DITypeRefArray Types = FT->getTypeArray();
const size_t NumElements = Types.size();
if (NumElements) {
Ops.resize(1 + NumElements);
// First element of the TypeArray is the type of the return value,
// followed by types of the function arguments' types.
// The same order is preserved in SPIRV.
for (unsigned I = 0; I < NumElements; ++I)
Ops[ReturnTypeIdx + I] = transDbgEntry(Types[I])->getId();
} else { // void foo();
Ops[ReturnTypeIdx] = getVoidTy()->getId();
}
if (isNonSemanticDebugInfo())
transformToConstant(Ops, {FlagsIdx});
return BM->addDebugInfo(SPIRVDebug::TypeFunction, getVoidTy(), Ops);
}
SPIRVEntry *LLVMToSPIRVDbgTran::transDbgEnumType(const DICompositeType *ET) {
using namespace SPIRVDebug::Operand::TypeEnum;
SPIRVWordVec Ops(MinOperandCount);
SPIRVEntry *UnderlyingType = getVoidTy();
if (DIType *DerivedFrom = ET->getBaseType())
UnderlyingType = transDbgEntry(DerivedFrom);
ConstantInt *Size = getUInt(M, ET->getSizeInBits());
Ops[NameIdx] = BM->getString(ET->getName().str())->getId();
Ops[UnderlyingTypeIdx] = UnderlyingType->getId();
Ops[SourceIdx] = getSource(ET)->getId();
Ops[LineIdx] = ET->getLine();
Ops[ColumnIdx] = 0; // This version of DICompositeType has no column number
Ops[ParentIdx] = getScope(ET->getScope())->getId();
Ops[SizeIdx] = SPIRVWriter->transValue(Size, nullptr)->getId();
Ops[FlagsIdx] = transDebugFlags(ET);
DINodeArray Elements = ET->getElements();
size_t ElemCount = Elements.size();
for (unsigned I = 0; I < ElemCount; ++I) {
DIEnumerator *E = cast<DIEnumerator>(Elements[I]);
ConstantInt *EnumValue = getInt(M, E->getValue().getSExtValue());
SPIRVValue *Val = SPIRVWriter->transValue(EnumValue, nullptr);
assert(Val->getOpCode() == OpConstant &&
"LLVM constant must be translated to SPIRV constant");
Ops.push_back(Val->getId());
SPIRVString *Name = BM->getString(E->getName().str());
Ops.push_back(Name->getId());
}
if (isNonSemanticDebugInfo())
transformToConstant(Ops, {LineIdx, ColumnIdx, FlagsIdx});
return BM->addDebugInfo(SPIRVDebug::TypeEnum, getVoidTy(), Ops);
}
SPIRVEntry *
LLVMToSPIRVDbgTran::transDbgCompositeType(const DICompositeType *CT) {
using namespace SPIRVDebug::Operand::TypeComposite;
SPIRVWordVec Ops(MinOperandCount);
SPIRVForward *Tmp = BM->addForward(nullptr);
MDMap.insert(std::make_pair(CT, Tmp));
auto Tag = static_cast<dwarf::Tag>(CT->getTag());
SPIRVId UniqId = getDebugInfoNoneId();
StringRef Identifier = CT->getIdentifier();
if (!Identifier.empty())
UniqId = BM->getString(Identifier.str())->getId();
ConstantInt *Size = getUInt(M, CT->getSizeInBits());
Ops[NameIdx] = BM->getString(CT->getName().str())->getId();
Ops[TagIdx] = SPIRV::DbgCompositeTypeMap::map(Tag);
Ops[SourceIdx] = getSource(CT)->getId();
Ops[LineIdx] = CT->getLine();
Ops[ColumnIdx] = 0; // This version of DICompositeType has no column number
Ops[ParentIdx] = getScope(CT->getScope())->getId();
Ops[LinkageNameIdx] = UniqId;
Ops[SizeIdx] = SPIRVWriter->transValue(Size, nullptr)->getId();
Ops[FlagsIdx] = transDebugFlags(CT);
for (DINode *N : CT->getElements()) {
Ops.push_back(transDbgEntry(N)->getId());
}
if (isNonSemanticDebugInfo())
transformToConstant(Ops, {TagIdx, LineIdx, ColumnIdx, FlagsIdx});
SPIRVEntry *Res =
BM->addDebugInfo(SPIRVDebug::TypeComposite, getVoidTy(), Ops);
// Translate template parameters.
if (DITemplateParameterArray TP = CT->getTemplateParams()) {
const unsigned int NumTParams = TP.size();
SPIRVWordVec Args(1 + NumTParams);
Args[0] = Res->getId();
for (unsigned int I = 0; I < NumTParams; ++I) {
Args[I + 1] = transDbgEntry(TP[I])->getId();
}
Res = BM->addDebugInfo(SPIRVDebug::TypeTemplate, getVoidTy(), Args);
}
BM->replaceForward(Tmp, Res);
MDMap[CT] = Res;
return Res;
}
SPIRVEntry *LLVMToSPIRVDbgTran::transDbgMemberType(const DIDerivedType *MT) {