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SPIRVReader.cpp
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SPIRVReader.cpp
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//===- SPIRVReader.cpp - Converts SPIR-V 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) 2014 Advanced Micro Devices, Inc. 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 Advanced Micro Devices, Inc., 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.
//
//===----------------------------------------------------------------------===//
/// \file
///
/// This file implements conversion of SPIR-V binary to LLVM IR.
///
//===----------------------------------------------------------------------===//
#include "SPIRVReader.h"
#include "OCLUtil.h"
#include "SPIRVBasicBlock.h"
#include "SPIRVExtInst.h"
#include "SPIRVFunction.h"
#include "SPIRVInstruction.h"
#include "SPIRVInternal.h"
#include "SPIRVMDBuilder.h"
#include "SPIRVModule.h"
#include "SPIRVToLLVMDbgTran.h"
#include "SPIRVType.h"
#include "SPIRVUtil.h"
#include "SPIRVValue.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/BinaryFormat/Dwarf.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/IRBuilder.h"
#include "llvm/IR/Instructions.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/LegacyPassManager.h"
#include "llvm/IR/Metadata.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Type.h"
#include "llvm/Support/Casting.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/FileSystem.h"
#include <algorithm>
#include <cstdlib>
#include <fstream>
#include <functional>
#include <iostream>
#include <iterator>
#include <map>
#include <set>
#include <sstream>
#include <string>
#define DEBUG_TYPE "spirv"
using namespace std;
using namespace llvm;
using namespace SPIRV;
using namespace OCLUtil;
namespace SPIRV {
cl::opt<bool> SPIRVEnableStepExpansion(
"spirv-expand-step", cl::init(true),
cl::desc("Enable expansion of OpenCL step and smoothstep function"));
cl::opt<bool> SPIRVGenKernelArgNameMD(
"spirv-gen-kernel-arg-name-md", cl::init(false),
cl::desc("Enable generating OpenCL kernel argument name "
"metadata"));
// Prefix for placeholder global variable name.
const char *KPlaceholderPrefix = "placeholder.";
// Save the translated LLVM before validation for debugging purpose.
static bool DbgSaveTmpLLVM = false;
static const char *DbgTmpLLVMFileName = "_tmp_llvmbil.ll";
namespace kOCLTypeQualifierName {
const static char *Const = "const";
const static char *Volatile = "volatile";
const static char *Restrict = "restrict";
const static char *Pipe = "pipe";
} // namespace kOCLTypeQualifierName
typedef std::pair<unsigned, AttributeList> AttributeWithIndex;
static bool isOpenCLKernel(SPIRVFunction *BF) {
return BF->getModule()->isEntryPoint(ExecutionModelKernel, BF->getId());
}
static void dumpLLVM(Module *M, const std::string &FName) {
std::error_code EC;
raw_fd_ostream FS(FName, EC, sys::fs::F_None);
if (EC) {
FS << *M;
FS.close();
}
}
static MDNode *getMDNodeStringIntVec(LLVMContext *Context,
const std::vector<SPIRVWord> &IntVals) {
std::vector<Metadata *> ValueVec;
for (auto &I : IntVals)
ValueVec.push_back(ConstantAsMetadata::get(
ConstantInt::get(Type::getInt32Ty(*Context), I)));
return MDNode::get(*Context, ValueVec);
}
static MDNode *getMDTwoInt(LLVMContext *Context, unsigned Int1, unsigned Int2) {
std::vector<Metadata *> ValueVec;
ValueVec.push_back(ConstantAsMetadata::get(
ConstantInt::get(Type::getInt32Ty(*Context), Int1)));
ValueVec.push_back(ConstantAsMetadata::get(
ConstantInt::get(Type::getInt32Ty(*Context), Int2)));
return MDNode::get(*Context, ValueVec);
}
static void addOCLVersionMetadata(LLVMContext *Context, Module *M,
const std::string &MDName, unsigned Major,
unsigned Minor) {
NamedMDNode *NamedMD = M->getOrInsertNamedMetadata(MDName);
NamedMD->addOperand(getMDTwoInt(Context, Major, Minor));
}
static void addNamedMetadataStringSet(LLVMContext *Context, Module *M,
const std::string &MDName,
const std::set<std::string> &StrSet) {
NamedMDNode *NamedMD = M->getOrInsertNamedMetadata(MDName);
std::vector<Metadata *> ValueVec;
for (auto &&Str : StrSet) {
ValueVec.push_back(MDString::get(*Context, Str));
}
NamedMD->addOperand(MDNode::get(*Context, ValueVec));
}
static void addOCLKernelArgumentMetadata(
LLVMContext *Context, const std::string &MDName, SPIRVFunction *BF,
llvm::Function *Fn,
std::function<Metadata *(SPIRVFunctionParameter *)> Func) {
std::vector<Metadata *> ValueVec;
BF->foreachArgument(
[&](SPIRVFunctionParameter *Arg) { ValueVec.push_back(Func(Arg)); });
Fn->setMetadata(MDName, MDNode::get(*Context, ValueVec));
}
Type *SPIRVToLLVM::getTranslatedType(SPIRVType *BV) {
auto Loc = TypeMap.find(BV);
if (Loc != TypeMap.end())
return Loc->second;
return nullptr;
}
Value *SPIRVToLLVM::getTranslatedValue(SPIRVValue *BV) {
auto Loc = ValueMap.find(BV);
if (Loc != ValueMap.end())
return Loc->second;
return nullptr;
}
IntrinsicInst *SPIRVToLLVM::getLifetimeStartIntrinsic(Instruction *I) {
auto II = dyn_cast<IntrinsicInst>(I);
if (II && II->getIntrinsicID() == Intrinsic::lifetime_start)
return II;
// Bitcast might be inserted during translation of OpLifetimeStart
auto BC = dyn_cast<BitCastInst>(I);
if (BC) {
for (const auto &U : BC->users()) {
II = dyn_cast<IntrinsicInst>(U);
if (II && II->getIntrinsicID() == Intrinsic::lifetime_start)
return II;
;
}
}
return nullptr;
}
SPIRVErrorLog &SPIRVToLLVM::getErrorLog() { return BM->getErrorLog(); }
void SPIRVToLLVM::setCallingConv(CallInst *Call) {
Function *F = Call->getCalledFunction();
assert(F && "Function pointers are not allowed in SPIRV");
Call->setCallingConv(F->getCallingConv());
}
void SPIRVToLLVM::setAttrByCalledFunc(CallInst *Call) {
Function *F = Call->getCalledFunction();
assert(F);
if (F->isIntrinsic()) {
return;
}
Call->setCallingConv(F->getCallingConv());
Call->setAttributes(F->getAttributes());
}
bool SPIRVToLLVM::transOCLBuiltinsFromVariables() {
std::vector<GlobalVariable *> WorkList;
for (auto I = M->global_begin(), E = M->global_end(); I != E; ++I) {
SPIRVBuiltinVariableKind Kind;
if (!isSPIRVBuiltinVariable(&(*I), &Kind))
continue;
if (!transOCLBuiltinFromVariable(&(*I), Kind))
return false;
WorkList.push_back(&(*I));
}
for (auto &I : WorkList) {
I->eraseFromParent();
}
return true;
}
// For integer types shorter than 32 bit, unsigned/signedness can be inferred
// from zext/sext attribute.
MDString *SPIRVToLLVM::transOCLKernelArgTypeName(SPIRVFunctionParameter *Arg) {
auto Ty =
Arg->isByVal() ? Arg->getType()->getPointerElementType() : Arg->getType();
return MDString::get(*Context, transTypeToOCLTypeName(Ty, !Arg->isZext()));
}
Value *SPIRVToLLVM::mapFunction(SPIRVFunction *BF, Function *F) {
SPIRVDBG(spvdbgs() << "[mapFunction] " << *BF << " -> ";
dbgs() << *F << '\n';)
FuncMap[BF] = F;
return F;
}
// Variable like GlobalInvolcationId[x] -> get_global_id(x).
// Variable like WorkDim -> get_work_dim().
bool SPIRVToLLVM::transOCLBuiltinFromVariable(GlobalVariable *GV,
SPIRVBuiltinVariableKind Kind) {
std::string FuncName = SPIRSPIRVBuiltinVariableMap::rmap(Kind);
std::string MangledName;
Type *ReturnTy = GV->getType()->getPointerElementType();
bool IsVec = ReturnTy->isVectorTy();
if (IsVec)
ReturnTy = cast<VectorType>(ReturnTy)->getElementType();
std::vector<Type *> ArgTy;
if (IsVec)
ArgTy.push_back(Type::getInt32Ty(*Context));
mangleOpenClBuiltin(FuncName, ArgTy, MangledName);
Function *Func = M->getFunction(MangledName);
if (!Func) {
FunctionType *FT = FunctionType::get(ReturnTy, ArgTy, false);
Func = Function::Create(FT, GlobalValue::ExternalLinkage, MangledName, M);
Func->setCallingConv(CallingConv::SPIR_FUNC);
Func->addFnAttr(Attribute::NoUnwind);
Func->addFnAttr(Attribute::ReadNone);
}
std::vector<Instruction *> Deletes;
std::vector<Instruction *> Uses;
for (auto UI = GV->user_begin(), UE = GV->user_end(); UI != UE; ++UI) {
assert(isa<LoadInst>(*UI) && "Unsupported use");
auto LD = cast<LoadInst>(*UI);
if (!IsVec) {
Uses.push_back(LD);
Deletes.push_back(LD);
continue;
}
for (auto LDUI = LD->user_begin(), LDUE = LD->user_end(); LDUI != LDUE;
++LDUI) {
assert(isa<ExtractElementInst>(*LDUI) && "Unsupported use");
auto EEI = dyn_cast<ExtractElementInst>(*LDUI);
Uses.push_back(EEI);
Deletes.push_back(EEI);
}
Deletes.push_back(LD);
}
for (auto &I : Uses) {
std::vector<Value *> Arg;
if (auto EEI = dyn_cast<ExtractElementInst>(I))
Arg.push_back(EEI->getIndexOperand());
auto Call = CallInst::Create(Func, Arg, "", I);
Call->takeName(I);
setAttrByCalledFunc(Call);
SPIRVDBG(dbgs() << "[transOCLBuiltinFromVariable] " << *I << " -> " << *Call
<< '\n';)
I->replaceAllUsesWith(Call);
}
for (auto &I : Deletes) {
I->eraseFromParent();
}
return true;
}
Type *SPIRVToLLVM::transFPType(SPIRVType *T) {
switch (T->getFloatBitWidth()) {
case 16:
return Type::getHalfTy(*Context);
case 32:
return Type::getFloatTy(*Context);
case 64:
return Type::getDoubleTy(*Context);
default:
llvm_unreachable("Invalid type");
return nullptr;
}
}
std::string SPIRVToLLVM::transOCLImageTypeName(SPIRV::SPIRVTypeImage *ST) {
std::string Name = std::string(kSPR2TypeName::OCLPrefix) +
rmap<std::string>(ST->getDescriptor());
SPIRVToLLVM::insertImageNameAccessQualifier(ST, Name);
return Name;
}
std::string
SPIRVToLLVM::transOCLSampledImageTypeName(SPIRV::SPIRVTypeSampledImage *ST) {
return getSPIRVTypeName(
kSPIRVTypeName::SampledImg,
getSPIRVImageTypePostfixes(
getSPIRVImageSampledTypeName(ST->getImageType()->getSampledType()),
ST->getImageType()->getDescriptor(),
ST->getImageType()->hasAccessQualifier()
? ST->getImageType()->getAccessQualifier()
: AccessQualifierReadOnly));
}
std::string
SPIRVToLLVM::transOCLPipeTypeName(SPIRV::SPIRVTypePipe *PT,
bool UseSPIRVFriendlyFormat,
SPIRVAccessQualifierKind PipeAccess) {
assert((PipeAccess == AccessQualifierReadOnly ||
PipeAccess == AccessQualifierWriteOnly) &&
"Invalid access qualifier");
if (!UseSPIRVFriendlyFormat)
return PipeAccess == AccessQualifierWriteOnly ? kSPR2TypeName::PipeWO
: kSPR2TypeName::PipeRO;
else
return std::string(kSPIRVTypeName::PrefixAndDelim) + kSPIRVTypeName::Pipe +
kSPIRVTypeName::Delimiter + kSPIRVTypeName::PostfixDelim +
PipeAccess;
}
std::string
SPIRVToLLVM::transOCLPipeStorageTypeName(SPIRV::SPIRVTypePipeStorage *PST) {
return std::string(kSPIRVTypeName::PrefixAndDelim) +
kSPIRVTypeName::PipeStorage;
}
Type *SPIRVToLLVM::transType(SPIRVType *T, bool IsClassMember) {
auto Loc = TypeMap.find(T);
if (Loc != TypeMap.end())
return Loc->second;
SPIRVDBG(spvdbgs() << "[transType] " << *T << " -> ";)
T->validate();
switch (T->getOpCode()) {
case OpTypeVoid:
return mapType(T, Type::getVoidTy(*Context));
case OpTypeBool:
return mapType(T, Type::getInt1Ty(*Context));
case OpTypeInt:
return mapType(T, Type::getIntNTy(*Context, T->getIntegerBitWidth()));
case OpTypeFloat:
return mapType(T, transFPType(T));
case OpTypeArray:
return mapType(T, ArrayType::get(transType(T->getArrayElementType()),
T->getArrayLength()));
case OpTypePointer:
return mapType(
T, PointerType::get(
transType(T->getPointerElementType(), IsClassMember),
SPIRSPIRVAddrSpaceMap::rmap(T->getPointerStorageClass())));
case OpTypeVector:
return mapType(T, VectorType::get(transType(T->getVectorComponentType()),
T->getVectorComponentCount()));
case OpTypeOpaque:
return mapType(T, StructType::create(*Context, T->getName()));
case OpTypeFunction: {
auto FT = static_cast<SPIRVTypeFunction *>(T);
auto RT = transType(FT->getReturnType());
std::vector<Type *> PT;
for (size_t I = 0, E = FT->getNumParameters(); I != E; ++I)
PT.push_back(transType(FT->getParameterType(I)));
return mapType(T, FunctionType::get(RT, PT, false));
}
case OpTypeImage: {
auto ST = static_cast<SPIRVTypeImage *>(T);
if (ST->isOCLImage())
return mapType(T, getOrCreateOpaquePtrType(M, transOCLImageTypeName(ST)));
else
llvm_unreachable("Unsupported image type");
return nullptr;
}
case OpTypeSampledImage: {
auto ST = static_cast<SPIRVTypeSampledImage *>(T);
return mapType(
T, getOrCreateOpaquePtrType(M, transOCLSampledImageTypeName(ST)));
}
case OpTypeStruct: {
auto ST = static_cast<SPIRVTypeStruct *>(T);
auto Name = ST->getName();
if (!Name.empty()) {
if (auto OldST = M->getTypeByName(Name))
OldST->setName("");
}
auto *StructTy = StructType::create(*Context, Name);
mapType(ST, StructTy);
SmallVector<Type *, 4> MT;
for (size_t I = 0, E = ST->getMemberCount(); I != E; ++I)
MT.push_back(transType(ST->getMemberType(I), true));
StructTy->setBody(MT, ST->isPacked());
return StructTy;
}
case OpTypePipe: {
auto PT = static_cast<SPIRVTypePipe *>(T);
return mapType(T, getOrCreateOpaquePtrType(
M,
transOCLPipeTypeName(PT, IsClassMember,
PT->getAccessQualifier()),
getOCLOpaqueTypeAddrSpace(T->getOpCode())));
}
case OpTypePipeStorage: {
auto PST = static_cast<SPIRVTypePipeStorage *>(T);
return mapType(
T, getOrCreateOpaquePtrType(M, transOCLPipeStorageTypeName(PST),
getOCLOpaqueTypeAddrSpace(T->getOpCode())));
}
default: {
auto OC = T->getOpCode();
if (isOpaqueGenericTypeOpCode(OC))
return mapType(
T, getOrCreateOpaquePtrType(M, OCLOpaqueTypeOpCodeMap::rmap(OC),
getOCLOpaqueTypeAddrSpace(OC)));
llvm_unreachable("Not implemented");
}
}
return 0;
}
std::string SPIRVToLLVM::transTypeToOCLTypeName(SPIRVType *T, bool IsSigned) {
switch (T->getOpCode()) {
case OpTypeVoid:
return "void";
case OpTypeBool:
return "bool";
case OpTypeInt: {
std::string Prefix = IsSigned ? "" : "u";
switch (T->getIntegerBitWidth()) {
case 8:
return Prefix + "char";
case 16:
return Prefix + "short";
case 32:
return Prefix + "int";
case 64:
return Prefix + "long";
default:
llvm_unreachable("invalid integer size");
return Prefix + std::string("int") + T->getIntegerBitWidth() + "_t";
}
} break;
case OpTypeFloat:
switch (T->getFloatBitWidth()) {
case 16:
return "half";
case 32:
return "float";
case 64:
return "double";
default:
llvm_unreachable("invalid floating pointer bitwidth");
return std::string("float") + T->getFloatBitWidth() + "_t";
}
break;
case OpTypeArray:
return "array";
case OpTypePointer:
return transTypeToOCLTypeName(T->getPointerElementType()) + "*";
case OpTypeVector:
return transTypeToOCLTypeName(T->getVectorComponentType()) +
T->getVectorComponentCount();
case OpTypeOpaque:
return T->getName();
case OpTypeFunction:
llvm_unreachable("Unsupported");
return "function";
case OpTypeStruct: {
auto Name = T->getName();
if (Name.find("struct.") == 0)
Name[6] = ' ';
else if (Name.find("union.") == 0)
Name[5] = ' ';
return Name;
}
case OpTypePipe:
return "pipe";
case OpTypeSampler:
return "sampler_t";
case OpTypeImage: {
std::string Name;
Name = rmap<std::string>(static_cast<SPIRVTypeImage *>(T)->getDescriptor());
return Name;
}
default:
if (isOpaqueGenericTypeOpCode(T->getOpCode())) {
return OCLOpaqueTypeOpCodeMap::rmap(T->getOpCode());
}
llvm_unreachable("Not implemented");
return "unknown";
}
}
std::vector<Type *>
SPIRVToLLVM::transTypeVector(const std::vector<SPIRVType *> &BT) {
std::vector<Type *> T;
for (auto I : BT)
T.push_back(transType(I));
return T;
}
std::vector<Value *>
SPIRVToLLVM::transValue(const std::vector<SPIRVValue *> &BV, Function *F,
BasicBlock *BB) {
std::vector<Value *> V;
for (auto I : BV)
V.push_back(transValue(I, F, BB));
return V;
}
bool SPIRVToLLVM::isSPIRVCmpInstTransToLLVMInst(SPIRVInstruction *BI) const {
auto OC = BI->getOpCode();
return isCmpOpCode(OC) && !(OC >= OpLessOrGreater && OC <= OpUnordered);
}
void SPIRVToLLVM::setName(llvm::Value *V, SPIRVValue *BV) {
auto Name = BV->getName();
if (!Name.empty() && (!V->hasName() || Name != V->getName()))
V->setName(Name);
}
void SPIRVToLLVM::setLLVMLoopMetadata(SPIRVLoopMerge *LM, BranchInst *BI) {
if (!LM)
return;
llvm::MDString *Name = nullptr;
auto Temp = MDNode::getTemporary(*Context, None);
auto Self = MDNode::get(*Context, Temp.get());
Self->replaceOperandWith(0, Self);
if (LM->getLoopControl() == LoopControlMaskNone) {
BI->setMetadata("llvm.loop", Self);
return;
} else if (LM->getLoopControl() == LoopControlUnrollMask)
Name = llvm::MDString::get(*Context, "llvm.loop.unroll.full");
else if (LM->getLoopControl() == LoopControlDontUnrollMask)
Name = llvm::MDString::get(*Context, "llvm.loop.unroll.disable");
else
return;
std::vector<llvm::Metadata *> OpValues(1, Name);
SmallVector<llvm::Metadata *, 2> Metadata;
Metadata.push_back(llvm::MDNode::get(*Context, Self));
Metadata.push_back(llvm::MDNode::get(*Context, OpValues));
llvm::MDNode *Node = llvm::MDNode::get(*Context, Metadata);
Node->replaceOperandWith(0, Node);
BI->setMetadata("llvm.loop", Node);
}
void SPIRVToLLVM::insertImageNameAccessQualifier(SPIRV::SPIRVTypeImage *ST,
std::string &Name) {
SPIRVAccessQualifierKind Acc = ST->hasAccessQualifier()
? ST->getAccessQualifier()
: AccessQualifierReadOnly;
std::string QName = rmap<std::string>(Acc);
// transform: read_only -> ro, write_only -> wo, read_write -> rw
QName = QName.substr(0, 1) + QName.substr(QName.find("_") + 1, 1) + "_";
assert(!Name.empty() && "image name should not be empty");
Name.insert(Name.size() - 1, QName);
}
Value *SPIRVToLLVM::transValue(SPIRVValue *BV, Function *F, BasicBlock *BB,
bool CreatePlaceHolder) {
SPIRVToLLVMValueMap::iterator Loc = ValueMap.find(BV);
if (Loc != ValueMap.end() && (!PlaceholderMap.count(BV) || CreatePlaceHolder))
return Loc->second;
SPIRVDBG(spvdbgs() << "[transValue] " << *BV << " -> ";)
BV->validate();
auto V = transValueWithoutDecoration(BV, F, BB, CreatePlaceHolder);
if (!V) {
SPIRVDBG(dbgs() << " Warning ! nullptr\n";)
return nullptr;
}
setName(V, BV);
if (!transDecoration(BV, V)) {
assert(0 && "trans decoration fail");
return nullptr;
}
SPIRVDBG(dbgs() << *V << '\n';)
return V;
}
Value *SPIRVToLLVM::transDeviceEvent(SPIRVValue *BV, Function *F,
BasicBlock *BB) {
auto Val = transValue(BV, F, BB, false);
auto Ty = dyn_cast<PointerType>(Val->getType());
assert(Ty && "Invalid Device Event");
if (Ty->getAddressSpace() == SPIRAS_Generic)
return Val;
IRBuilder<> Builder(BB);
auto EventTy = PointerType::get(Ty->getElementType(), SPIRAS_Generic);
return Builder.CreateAddrSpaceCast(Val, EventTy);
}
Value *SPIRVToLLVM::transConvertInst(SPIRVValue *BV, Function *F,
BasicBlock *BB) {
SPIRVUnary *BC = static_cast<SPIRVUnary *>(BV);
auto Src = transValue(BC->getOperand(0), F, BB, BB ? true : false);
auto Dst = transType(BC->getType());
CastInst::CastOps CO = Instruction::BitCast;
bool IsExt =
Dst->getScalarSizeInBits() > Src->getType()->getScalarSizeInBits();
switch (BC->getOpCode()) {
case OpPtrCastToGeneric:
case OpGenericCastToPtr:
CO = Instruction::AddrSpaceCast;
break;
case OpSConvert:
CO = IsExt ? Instruction::SExt : Instruction::Trunc;
break;
case OpUConvert:
CO = IsExt ? Instruction::ZExt : Instruction::Trunc;
break;
case OpFConvert:
CO = IsExt ? Instruction::FPExt : Instruction::FPTrunc;
break;
default:
CO = static_cast<CastInst::CastOps>(OpCodeMap::rmap(BC->getOpCode()));
}
assert(CastInst::isCast(CO) && "Invalid cast op code");
SPIRVDBG(if (!CastInst::castIsValid(CO, Src, Dst)) {
spvdbgs() << "Invalid cast: " << *BV << " -> ";
dbgs() << "Op = " << CO << ", Src = " << *Src << " Dst = " << *Dst << '\n';
})
if (BB)
return CastInst::Create(CO, Src, Dst, BV->getName(), BB);
return ConstantExpr::getCast(CO, dyn_cast<Constant>(Src), Dst);
}
BinaryOperator *SPIRVToLLVM::transShiftLogicalBitwiseInst(SPIRVValue *BV,
BasicBlock *BB,
Function *F) {
SPIRVBinary *BBN = static_cast<SPIRVBinary *>(BV);
assert(BB && "Invalid BB");
Instruction::BinaryOps BO;
auto OP = BBN->getOpCode();
if (isLogicalOpCode(OP))
OP = IntBoolOpMap::rmap(OP);
BO = static_cast<Instruction::BinaryOps>(OpCodeMap::rmap(OP));
auto Inst = BinaryOperator::Create(BO, transValue(BBN->getOperand(0), F, BB),
transValue(BBN->getOperand(1), F, BB),
BV->getName(), BB);
if (BV->hasDecorate(DecorationNoSignedWrap)) {
Inst->setHasNoSignedWrap(true);
}
if (BV->hasDecorate(DecorationNoUnsignedWrap)) {
Inst->setHasNoUnsignedWrap(true);
}
return Inst;
}
Instruction *SPIRVToLLVM::transCmpInst(SPIRVValue *BV, BasicBlock *BB,
Function *F) {
SPIRVCompare *BC = static_cast<SPIRVCompare *>(BV);
assert(BB && "Invalid BB");
SPIRVType *BT = BC->getOperand(0)->getType();
Instruction *Inst = nullptr;
auto OP = BC->getOpCode();
if (isLogicalOpCode(OP))
OP = IntBoolOpMap::rmap(OP);
if (BT->isTypeVectorOrScalarInt() || BT->isTypeVectorOrScalarBool() ||
BT->isTypePointer())
Inst = new ICmpInst(*BB, CmpMap::rmap(OP),
transValue(BC->getOperand(0), F, BB),
transValue(BC->getOperand(1), F, BB));
else if (BT->isTypeVectorOrScalarFloat())
Inst = new FCmpInst(*BB, CmpMap::rmap(OP),
transValue(BC->getOperand(0), F, BB),
transValue(BC->getOperand(1), F, BB));
assert(Inst && "not implemented");
return Inst;
}
bool SPIRVToLLVM::postProcessOCL() {
std::string DemangledName;
SPIRVWord SrcLangVer = 0;
BM->getSourceLanguage(&SrcLangVer);
bool IsCpp = SrcLangVer == kOCLVer::CL21;
for (auto I = M->begin(), E = M->end(); I != E;) {
auto F = I++;
if (F->hasName() && F->isDeclaration()) {
LLVM_DEBUG(dbgs() << "[postProcessOCL sret] " << *F << '\n');
if (F->getReturnType()->isStructTy() &&
oclIsBuiltin(F->getName(), &DemangledName, IsCpp)) {
if (!postProcessOCLBuiltinReturnStruct(&(*F)))
return false;
}
}
}
for (auto I = M->begin(), E = M->end(); I != E;) {
auto F = I++;
if (F->hasName() && F->isDeclaration()) {
LLVM_DEBUG(dbgs() << "[postProcessOCL array arg] " << *F << '\n');
if (hasArrayArg(&(*F)) &&
oclIsBuiltin(F->getName(), &DemangledName, IsCpp))
if (!postProcessOCLBuiltinWithArrayArguments(&(*F), DemangledName))
return false;
}
}
return true;
}
bool SPIRVToLLVM::postProcessOCLBuiltinReturnStruct(Function *F) {
std::string Name = F->getName();
F->setName(Name + ".old");
for (auto I = F->user_begin(), E = F->user_end(); I != E;) {
if (auto CI = dyn_cast<CallInst>(*I++)) {
auto ST = dyn_cast<StoreInst>(*(CI->user_begin()));
assert(ST);
std::vector<Type *> ArgTys;
getFunctionTypeParameterTypes(F->getFunctionType(), ArgTys);
ArgTys.insert(ArgTys.begin(),
PointerType::get(F->getReturnType(), SPIRAS_Private));
auto NewF =
getOrCreateFunction(M, Type::getVoidTy(*Context), ArgTys, Name);
NewF->setCallingConv(F->getCallingConv());
auto Args = getArguments(CI);
Args.insert(Args.begin(), ST->getPointerOperand());
auto NewCI = CallInst::Create(NewF, Args, CI->getName(), CI);
NewCI->setCallingConv(CI->getCallingConv());
ST->eraseFromParent();
CI->eraseFromParent();
}
}
F->eraseFromParent();
return true;
}
bool SPIRVToLLVM::postProcessOCLBuiltinWithArrayArguments(
Function *F, const std::string &DemangledName) {
LLVM_DEBUG(dbgs() << "[postProcessOCLBuiltinWithArrayArguments] " << *F
<< '\n');
auto Attrs = F->getAttributes();
auto Name = F->getName();
mutateFunction(
F,
[=](CallInst *CI, std::vector<Value *> &Args) {
auto FBegin =
CI->getParent()->getParent()->begin()->getFirstInsertionPt();
for (auto &I : Args) {
auto T = I->getType();
if (!T->isArrayTy())
continue;
auto Alloca = new AllocaInst(T, 0, "", &(*FBegin));
new StoreInst(I, Alloca, false, CI);
auto Zero =
ConstantInt::getNullValue(Type::getInt32Ty(T->getContext()));
Value *Index[] = {Zero, Zero};
I = GetElementPtrInst::CreateInBounds(Alloca, Index, "", CI);
}
return Name;
},
nullptr, &Attrs);
return true;
}
static char getTypeSuffix(Type *T) {
char Suffix;
Type *ST = T->getScalarType();
if (ST->isHalfTy())
Suffix = 'h';
else if (ST->isFloatTy())
Suffix = 'f';
else
Suffix = 'i';
return Suffix;
}
// ToDo: Handle unsigned integer return type. May need spec change.
Instruction *SPIRVToLLVM::postProcessOCLReadImage(SPIRVInstruction *BI,
CallInst *CI,
const std::string &FuncName) {
assert(CI->getCalledFunction() && "Unexpected indirect call");
AttributeList Attrs = CI->getCalledFunction()->getAttributes();
StringRef ImageTypeName;
bool IsDepthImage = false;
if (isOCLImageType(
(cast<CallInst>(CI->getOperand(0)))->getArgOperand(0)->getType(),
&ImageTypeName))
IsDepthImage = ImageTypeName.contains("_depth_");
return mutateCallInstOCL(
M, CI,
[=](CallInst *, std::vector<Value *> &Args, llvm::Type *&RetTy) {
CallInst *CallSampledImg = cast<CallInst>(Args[0]);
auto Img = CallSampledImg->getArgOperand(0);
assert(isOCLImageType(Img->getType()));
auto Sampler = CallSampledImg->getArgOperand(1);
Args[0] = Img;
Args.insert(Args.begin() + 1, Sampler);
if (Args.size() > 4) {
ConstantInt *ImOp = dyn_cast<ConstantInt>(Args[3]);
ConstantFP *LodVal = dyn_cast<ConstantFP>(Args[4]);
// Drop "Image Operands" argument.
Args.erase(Args.begin() + 3, Args.begin() + 4);
// If the image operand is LOD and its value is zero, drop it too.
if (ImOp && LodVal && LodVal->isNullValue() &&
ImOp->getZExtValue() == ImageOperandsMask::ImageOperandsLodMask)
Args.erase(Args.begin() + 3, Args.end());
}
if (CallSampledImg->hasOneUse()) {
CallSampledImg->replaceAllUsesWith(
UndefValue::get(CallSampledImg->getType()));
CallSampledImg->dropAllReferences();
CallSampledImg->eraseFromParent();
}
Type *T = CI->getType();
if (auto VT = dyn_cast<VectorType>(T))
T = VT->getElementType();
RetTy = IsDepthImage ? T : CI->getType();
return std::string(kOCLBuiltinName::SampledReadImage) +
getTypeSuffix(T);
},
[=](CallInst *NewCI) -> Instruction * {
if (IsDepthImage)
return InsertElementInst::Create(
UndefValue::get(VectorType::get(NewCI->getType(), 4)), NewCI,
getSizet(M, 0), "", NewCI->getParent());
return NewCI;
},
&Attrs);
}
CallInst *
SPIRVToLLVM::postProcessOCLWriteImage(SPIRVInstruction *BI, CallInst *CI,
const std::string &DemangledName) {
assert(CI->getCalledFunction() && "Unexpected indirect call");
AttributeList Attrs = CI->getCalledFunction()->getAttributes();
return mutateCallInstOCL(
M, CI,
[=](CallInst *, std::vector<Value *> &Args) {
llvm::Type *T = Args[2]->getType();
if (Args.size() > 4) {
ConstantInt *ImOp = dyn_cast<ConstantInt>(Args[3]);
ConstantFP *LodVal = dyn_cast<ConstantFP>(Args[4]);
// Drop "Image Operands" argument.
Args.erase(Args.begin() + 3, Args.begin() + 4);
// If the image operand is LOD and its value is zero, drop it too.
if (ImOp && LodVal && LodVal->isNullValue() &&
ImOp->getZExtValue() == ImageOperandsMask::ImageOperandsLodMask)
Args.erase(Args.begin() + 3, Args.end());
else
std::swap(Args[2], Args[3]);
}
return std::string(kOCLBuiltinName::WriteImage) + getTypeSuffix(T);
},
&Attrs);
}
CallInst *SPIRVToLLVM::postProcessOCLBuildNDRange(SPIRVInstruction *BI,
CallInst *CI,
const std::string &FuncName) {
assert(CI->getNumArgOperands() == 3);
auto GWS = CI->getArgOperand(0);
auto LWS = CI->getArgOperand(1);
auto GWO = CI->getArgOperand(2);
CI->setArgOperand(0, GWO);
CI->setArgOperand(1, GWS);
CI->setArgOperand(2, LWS);
return CI;
}
Instruction *
SPIRVToLLVM::postProcessGroupAllAny(CallInst *CI,
const std::string &DemangledName) {
assert(CI->getCalledFunction() && "Unexpected indirect call");
AttributeList Attrs = CI->getCalledFunction()->getAttributes();
return mutateCallInstSPIRV(
M, CI,
[=](CallInst *, std::vector<Value *> &Args, llvm::Type *&RetTy) {
Type *Int32Ty = Type::getInt32Ty(*Context);
RetTy = Int32Ty;
Args[1] = CastInst::CreateZExtOrBitCast(Args[1], Int32Ty, "", CI);
return DemangledName;
},
[=](CallInst *NewCI) -> Instruction * {
Type *RetTy = Type::getInt1Ty(*Context);
return CastInst::CreateTruncOrBitCast(NewCI, RetTy, "",
NewCI->getNextNode());
},
&Attrs);
}
Type *SPIRVToLLVM::mapType(SPIRVType *BT, Type *T) {
SPIRVDBG(dbgs() << *T << '\n';)
TypeMap[BT] = T;
return T;
}
Value *SPIRVToLLVM::mapValue(SPIRVValue *BV, Value *V) {
auto Loc = ValueMap.find(BV);
if (Loc != ValueMap.end()) {
if (Loc->second == V)
return V;
auto LD = dyn_cast<LoadInst>(Loc->second);
auto Placeholder = dyn_cast<GlobalVariable>(LD->getPointerOperand());
assert(LD && Placeholder &&
Placeholder->getName().startswith(KPlaceholderPrefix) &&
"A value is translated twice");
// Replaces placeholders for PHI nodes
LD->replaceAllUsesWith(V);
LD->eraseFromParent();
Placeholder->eraseFromParent();
}
ValueMap[BV] = V;
return V;
}
bool SPIRVToLLVM::isSPIRVBuiltinVariable(GlobalVariable *GV,
SPIRVBuiltinVariableKind *Kind) {
auto Loc = BuiltinGVMap.find(GV);
if (Loc == BuiltinGVMap.end())
return false;
if (Kind)
*Kind = Loc->second;
return true;
}
CallInst *
SPIRVToLLVM::expandOCLBuiltinWithScalarArg(CallInst *CI,
const std::string &FuncName) {
assert(CI->getCalledFunction() && "Unexpected indirect call");
AttributeList Attrs = CI->getCalledFunction()->getAttributes();
if (!CI->getOperand(0)->getType()->isVectorTy() &&
CI->getOperand(1)->getType()->isVectorTy()) {
return mutateCallInstOCL(
M, CI,
[=](CallInst *, std::vector<Value *> &Args) {
unsigned VecSize =
CI->getOperand(1)->getType()->getVectorNumElements();
Value *NewVec = nullptr;
if (auto CA = dyn_cast<Constant>(Args[0]))
NewVec = ConstantVector::getSplat(VecSize, CA);
else {
NewVec = ConstantVector::getSplat(
VecSize, Constant::getNullValue(Args[0]->getType()));
NewVec = InsertElementInst::Create(NewVec, Args[0], getInt32(M, 0),
"", CI);
NewVec = new ShuffleVectorInst(
NewVec, NewVec,
ConstantVector::getSplat(VecSize, getInt32(M, 0)), "", CI);
}
NewVec->takeName(Args[0]);
Args[0] = NewVec;
return FuncName;
},
&Attrs);
}
return CI;
}
std::string
SPIRVToLLVM::transOCLPipeTypeAccessQualifier(SPIRV::SPIRVTypePipe *ST) {
return SPIRSPIRVAccessQualifierMap::rmap(ST->getAccessQualifier());