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SPIRVGlobalRegistry.cpp
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//===-- SPIRVGlobalRegistry.cpp - SPIR-V Global Registry --------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file contains the implementation of the SPIRVGlobalRegistry class,
// which is used to maintain rich type information required for SPIR-V even
// after lowering from LLVM IR to GMIR. It can convert an llvm::Type into
// an OpTypeXXX instruction, and map it to a virtual register. Also it builds
// and supports consistency of constants and global variables.
//
//===----------------------------------------------------------------------===//
#include "SPIRVGlobalRegistry.h"
#include "SPIRV.h"
#include "SPIRVBuiltins.h"
#include "SPIRVSubtarget.h"
#include "SPIRVTargetMachine.h"
#include "SPIRVUtils.h"
using namespace llvm;
SPIRVGlobalRegistry::SPIRVGlobalRegistry(unsigned PointerSize)
: PointerSize(PointerSize) {}
SPIRVType *SPIRVGlobalRegistry::assignIntTypeToVReg(unsigned BitWidth,
Register VReg,
MachineInstr &I,
const SPIRVInstrInfo &TII) {
SPIRVType *SpirvType = getOrCreateSPIRVIntegerType(BitWidth, I, TII);
assignSPIRVTypeToVReg(SpirvType, VReg, *CurMF);
return SpirvType;
}
SPIRVType *SPIRVGlobalRegistry::assignVectTypeToVReg(
SPIRVType *BaseType, unsigned NumElements, Register VReg, MachineInstr &I,
const SPIRVInstrInfo &TII) {
SPIRVType *SpirvType =
getOrCreateSPIRVVectorType(BaseType, NumElements, I, TII);
assignSPIRVTypeToVReg(SpirvType, VReg, *CurMF);
return SpirvType;
}
SPIRVType *SPIRVGlobalRegistry::assignTypeToVReg(
const Type *Type, Register VReg, MachineIRBuilder &MIRBuilder,
SPIRV::AccessQualifier::AccessQualifier AccessQual, bool EmitIR) {
SPIRVType *SpirvType =
getOrCreateSPIRVType(Type, MIRBuilder, AccessQual, EmitIR);
assignSPIRVTypeToVReg(SpirvType, VReg, MIRBuilder.getMF());
return SpirvType;
}
void SPIRVGlobalRegistry::assignSPIRVTypeToVReg(SPIRVType *SpirvType,
Register VReg,
MachineFunction &MF) {
VRegToTypeMap[&MF][VReg] = SpirvType;
}
static Register createTypeVReg(MachineIRBuilder &MIRBuilder) {
auto &MRI = MIRBuilder.getMF().getRegInfo();
auto Res = MRI.createGenericVirtualRegister(LLT::scalar(32));
MRI.setRegClass(Res, &SPIRV::TYPERegClass);
return Res;
}
static Register createTypeVReg(MachineRegisterInfo &MRI) {
auto Res = MRI.createGenericVirtualRegister(LLT::scalar(32));
MRI.setRegClass(Res, &SPIRV::TYPERegClass);
return Res;
}
SPIRVType *SPIRVGlobalRegistry::getOpTypeBool(MachineIRBuilder &MIRBuilder) {
return MIRBuilder.buildInstr(SPIRV::OpTypeBool)
.addDef(createTypeVReg(MIRBuilder));
}
SPIRVType *SPIRVGlobalRegistry::getOpTypeInt(uint32_t Width,
MachineIRBuilder &MIRBuilder,
bool IsSigned) {
assert(Width <= 64 && "Unsupported integer width!");
const SPIRVSubtarget &ST =
cast<SPIRVSubtarget>(MIRBuilder.getMF().getSubtarget());
if (ST.canUseExtension(
SPIRV::Extension::SPV_INTEL_arbitrary_precision_integers)) {
MIRBuilder.buildInstr(SPIRV::OpExtension)
.addImm(SPIRV::Extension::SPV_INTEL_arbitrary_precision_integers);
MIRBuilder.buildInstr(SPIRV::OpCapability)
.addImm(SPIRV::Capability::ArbitraryPrecisionIntegersINTEL);
} else if (Width <= 8)
Width = 8;
else if (Width <= 16)
Width = 16;
else if (Width <= 32)
Width = 32;
else if (Width <= 64)
Width = 64;
auto MIB = MIRBuilder.buildInstr(SPIRV::OpTypeInt)
.addDef(createTypeVReg(MIRBuilder))
.addImm(Width)
.addImm(IsSigned ? 1 : 0);
return MIB;
}
SPIRVType *SPIRVGlobalRegistry::getOpTypeFloat(uint32_t Width,
MachineIRBuilder &MIRBuilder) {
auto MIB = MIRBuilder.buildInstr(SPIRV::OpTypeFloat)
.addDef(createTypeVReg(MIRBuilder))
.addImm(Width);
return MIB;
}
SPIRVType *SPIRVGlobalRegistry::getOpTypeVoid(MachineIRBuilder &MIRBuilder) {
return MIRBuilder.buildInstr(SPIRV::OpTypeVoid)
.addDef(createTypeVReg(MIRBuilder));
}
SPIRVType *SPIRVGlobalRegistry::getOpTypeVector(uint32_t NumElems,
SPIRVType *ElemType,
MachineIRBuilder &MIRBuilder) {
auto EleOpc = ElemType->getOpcode();
assert((EleOpc == SPIRV::OpTypeInt || EleOpc == SPIRV::OpTypeFloat ||
EleOpc == SPIRV::OpTypeBool) &&
"Invalid vector element type");
auto MIB = MIRBuilder.buildInstr(SPIRV::OpTypeVector)
.addDef(createTypeVReg(MIRBuilder))
.addUse(getSPIRVTypeID(ElemType))
.addImm(NumElems);
return MIB;
}
std::tuple<Register, ConstantInt *, bool>
SPIRVGlobalRegistry::getOrCreateConstIntReg(uint64_t Val, SPIRVType *SpvType,
MachineIRBuilder *MIRBuilder,
MachineInstr *I,
const SPIRVInstrInfo *TII) {
const IntegerType *LLVMIntTy;
if (SpvType)
LLVMIntTy = cast<IntegerType>(getTypeForSPIRVType(SpvType));
else
LLVMIntTy = IntegerType::getInt32Ty(CurMF->getFunction().getContext());
bool NewInstr = false;
// Find a constant in DT or build a new one.
ConstantInt *CI = ConstantInt::get(const_cast<IntegerType *>(LLVMIntTy), Val);
Register Res = DT.find(CI, CurMF);
if (!Res.isValid()) {
unsigned BitWidth = SpvType ? getScalarOrVectorBitWidth(SpvType) : 32;
LLT LLTy = LLT::scalar(32);
Res = CurMF->getRegInfo().createGenericVirtualRegister(LLTy);
if (MIRBuilder)
assignTypeToVReg(LLVMIntTy, Res, *MIRBuilder);
else
assignIntTypeToVReg(BitWidth, Res, *I, *TII);
DT.add(CI, CurMF, Res);
NewInstr = true;
}
return std::make_tuple(Res, CI, NewInstr);
}
Register SPIRVGlobalRegistry::getOrCreateConstInt(uint64_t Val, MachineInstr &I,
SPIRVType *SpvType,
const SPIRVInstrInfo &TII) {
assert(SpvType);
ConstantInt *CI;
Register Res;
bool New;
std::tie(Res, CI, New) =
getOrCreateConstIntReg(Val, SpvType, nullptr, &I, &TII);
// If we have found Res register which is defined by the passed G_CONSTANT
// machine instruction, a new constant instruction should be created.
if (!New && (!I.getOperand(0).isReg() || Res != I.getOperand(0).getReg()))
return Res;
MachineInstrBuilder MIB;
MachineBasicBlock &BB = *I.getParent();
if (Val) {
MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpConstantI))
.addDef(Res)
.addUse(getSPIRVTypeID(SpvType));
addNumImm(APInt(getScalarOrVectorBitWidth(SpvType), Val), MIB);
} else {
MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpConstantNull))
.addDef(Res)
.addUse(getSPIRVTypeID(SpvType));
}
const auto &ST = CurMF->getSubtarget();
constrainSelectedInstRegOperands(*MIB, *ST.getInstrInfo(),
*ST.getRegisterInfo(), *ST.getRegBankInfo());
return Res;
}
Register SPIRVGlobalRegistry::buildConstantInt(uint64_t Val,
MachineIRBuilder &MIRBuilder,
SPIRVType *SpvType,
bool EmitIR) {
auto &MF = MIRBuilder.getMF();
const IntegerType *LLVMIntTy;
if (SpvType)
LLVMIntTy = cast<IntegerType>(getTypeForSPIRVType(SpvType));
else
LLVMIntTy = IntegerType::getInt32Ty(MF.getFunction().getContext());
// Find a constant in DT or build a new one.
const auto ConstInt =
ConstantInt::get(const_cast<IntegerType *>(LLVMIntTy), Val);
Register Res = DT.find(ConstInt, &MF);
if (!Res.isValid()) {
unsigned BitWidth = SpvType ? getScalarOrVectorBitWidth(SpvType) : 32;
LLT LLTy = LLT::scalar(EmitIR ? BitWidth : 32);
Res = MF.getRegInfo().createGenericVirtualRegister(LLTy);
assignTypeToVReg(LLVMIntTy, Res, MIRBuilder,
SPIRV::AccessQualifier::ReadWrite, EmitIR);
DT.add(ConstInt, &MIRBuilder.getMF(), Res);
if (EmitIR) {
MIRBuilder.buildConstant(Res, *ConstInt);
} else {
MachineInstrBuilder MIB;
if (Val) {
assert(SpvType);
MIB = MIRBuilder.buildInstr(SPIRV::OpConstantI)
.addDef(Res)
.addUse(getSPIRVTypeID(SpvType));
addNumImm(APInt(BitWidth, Val), MIB);
} else {
assert(SpvType);
MIB = MIRBuilder.buildInstr(SPIRV::OpConstantNull)
.addDef(Res)
.addUse(getSPIRVTypeID(SpvType));
}
const auto &Subtarget = CurMF->getSubtarget();
constrainSelectedInstRegOperands(*MIB, *Subtarget.getInstrInfo(),
*Subtarget.getRegisterInfo(),
*Subtarget.getRegBankInfo());
}
}
return Res;
}
Register SPIRVGlobalRegistry::buildConstantFP(APFloat Val,
MachineIRBuilder &MIRBuilder,
SPIRVType *SpvType) {
auto &MF = MIRBuilder.getMF();
const Type *LLVMFPTy;
if (SpvType) {
LLVMFPTy = getTypeForSPIRVType(SpvType);
assert(LLVMFPTy->isFloatingPointTy());
} else {
LLVMFPTy = IntegerType::getFloatTy(MF.getFunction().getContext());
}
// Find a constant in DT or build a new one.
const auto ConstFP = ConstantFP::get(LLVMFPTy->getContext(), Val);
Register Res = DT.find(ConstFP, &MF);
if (!Res.isValid()) {
unsigned BitWidth = SpvType ? getScalarOrVectorBitWidth(SpvType) : 32;
Res = MF.getRegInfo().createGenericVirtualRegister(LLT::scalar(BitWidth));
assignTypeToVReg(LLVMFPTy, Res, MIRBuilder);
DT.add(ConstFP, &MF, Res);
MIRBuilder.buildFConstant(Res, *ConstFP);
}
return Res;
}
Register SPIRVGlobalRegistry::getOrCreateIntCompositeOrNull(
uint64_t Val, MachineInstr &I, SPIRVType *SpvType,
const SPIRVInstrInfo &TII, Constant *CA, unsigned BitWidth,
unsigned ElemCnt) {
// Find a constant vector in DT or build a new one.
Register Res = DT.find(CA, CurMF);
if (!Res.isValid()) {
SPIRVType *SpvBaseType = getOrCreateSPIRVIntegerType(BitWidth, I, TII);
// SpvScalConst should be created before SpvVecConst to avoid undefined ID
// error on validation.
// TODO: can moved below once sorting of types/consts/defs is implemented.
Register SpvScalConst;
if (Val)
SpvScalConst = getOrCreateConstInt(Val, I, SpvBaseType, TII);
// TODO: maybe use bitwidth of base type.
LLT LLTy = LLT::scalar(32);
Register SpvVecConst =
CurMF->getRegInfo().createGenericVirtualRegister(LLTy);
assignSPIRVTypeToVReg(SpvType, SpvVecConst, *CurMF);
DT.add(CA, CurMF, SpvVecConst);
MachineInstrBuilder MIB;
MachineBasicBlock &BB = *I.getParent();
if (Val) {
MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpConstantComposite))
.addDef(SpvVecConst)
.addUse(getSPIRVTypeID(SpvType));
for (unsigned i = 0; i < ElemCnt; ++i)
MIB.addUse(SpvScalConst);
} else {
MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpConstantNull))
.addDef(SpvVecConst)
.addUse(getSPIRVTypeID(SpvType));
}
const auto &Subtarget = CurMF->getSubtarget();
constrainSelectedInstRegOperands(*MIB, *Subtarget.getInstrInfo(),
*Subtarget.getRegisterInfo(),
*Subtarget.getRegBankInfo());
return SpvVecConst;
}
return Res;
}
Register
SPIRVGlobalRegistry::getOrCreateConsIntVector(uint64_t Val, MachineInstr &I,
SPIRVType *SpvType,
const SPIRVInstrInfo &TII) {
const Type *LLVMTy = getTypeForSPIRVType(SpvType);
assert(LLVMTy->isVectorTy());
const FixedVectorType *LLVMVecTy = cast<FixedVectorType>(LLVMTy);
Type *LLVMBaseTy = LLVMVecTy->getElementType();
const auto ConstInt = ConstantInt::get(LLVMBaseTy, Val);
auto ConstVec =
ConstantVector::getSplat(LLVMVecTy->getElementCount(), ConstInt);
unsigned BW = getScalarOrVectorBitWidth(SpvType);
return getOrCreateIntCompositeOrNull(Val, I, SpvType, TII, ConstVec, BW,
SpvType->getOperand(2).getImm());
}
Register
SPIRVGlobalRegistry::getOrCreateConsIntArray(uint64_t Val, MachineInstr &I,
SPIRVType *SpvType,
const SPIRVInstrInfo &TII) {
const Type *LLVMTy = getTypeForSPIRVType(SpvType);
assert(LLVMTy->isArrayTy());
const ArrayType *LLVMArrTy = cast<ArrayType>(LLVMTy);
Type *LLVMBaseTy = LLVMArrTy->getElementType();
const auto ConstInt = ConstantInt::get(LLVMBaseTy, Val);
auto ConstArr =
ConstantArray::get(const_cast<ArrayType *>(LLVMArrTy), {ConstInt});
SPIRVType *SpvBaseTy = getSPIRVTypeForVReg(SpvType->getOperand(1).getReg());
unsigned BW = getScalarOrVectorBitWidth(SpvBaseTy);
return getOrCreateIntCompositeOrNull(Val, I, SpvType, TII, ConstArr, BW,
LLVMArrTy->getNumElements());
}
Register SPIRVGlobalRegistry::getOrCreateIntCompositeOrNull(
uint64_t Val, MachineIRBuilder &MIRBuilder, SPIRVType *SpvType, bool EmitIR,
Constant *CA, unsigned BitWidth, unsigned ElemCnt) {
Register Res = DT.find(CA, CurMF);
if (!Res.isValid()) {
Register SpvScalConst;
if (Val || EmitIR) {
SPIRVType *SpvBaseType =
getOrCreateSPIRVIntegerType(BitWidth, MIRBuilder);
SpvScalConst = buildConstantInt(Val, MIRBuilder, SpvBaseType, EmitIR);
}
LLT LLTy = EmitIR ? LLT::fixed_vector(ElemCnt, BitWidth) : LLT::scalar(32);
Register SpvVecConst =
CurMF->getRegInfo().createGenericVirtualRegister(LLTy);
assignSPIRVTypeToVReg(SpvType, SpvVecConst, *CurMF);
DT.add(CA, CurMF, SpvVecConst);
if (EmitIR) {
MIRBuilder.buildSplatVector(SpvVecConst, SpvScalConst);
} else {
if (Val) {
auto MIB = MIRBuilder.buildInstr(SPIRV::OpConstantComposite)
.addDef(SpvVecConst)
.addUse(getSPIRVTypeID(SpvType));
for (unsigned i = 0; i < ElemCnt; ++i)
MIB.addUse(SpvScalConst);
} else {
MIRBuilder.buildInstr(SPIRV::OpConstantNull)
.addDef(SpvVecConst)
.addUse(getSPIRVTypeID(SpvType));
}
}
return SpvVecConst;
}
return Res;
}
Register
SPIRVGlobalRegistry::getOrCreateConsIntVector(uint64_t Val,
MachineIRBuilder &MIRBuilder,
SPIRVType *SpvType, bool EmitIR) {
const Type *LLVMTy = getTypeForSPIRVType(SpvType);
assert(LLVMTy->isVectorTy());
const FixedVectorType *LLVMVecTy = cast<FixedVectorType>(LLVMTy);
Type *LLVMBaseTy = LLVMVecTy->getElementType();
const auto ConstInt = ConstantInt::get(LLVMBaseTy, Val);
auto ConstVec =
ConstantVector::getSplat(LLVMVecTy->getElementCount(), ConstInt);
unsigned BW = getScalarOrVectorBitWidth(SpvType);
return getOrCreateIntCompositeOrNull(Val, MIRBuilder, SpvType, EmitIR,
ConstVec, BW,
SpvType->getOperand(2).getImm());
}
Register
SPIRVGlobalRegistry::getOrCreateConsIntArray(uint64_t Val,
MachineIRBuilder &MIRBuilder,
SPIRVType *SpvType, bool EmitIR) {
const Type *LLVMTy = getTypeForSPIRVType(SpvType);
assert(LLVMTy->isArrayTy());
const ArrayType *LLVMArrTy = cast<ArrayType>(LLVMTy);
Type *LLVMBaseTy = LLVMArrTy->getElementType();
const auto ConstInt = ConstantInt::get(LLVMBaseTy, Val);
auto ConstArr =
ConstantArray::get(const_cast<ArrayType *>(LLVMArrTy), {ConstInt});
SPIRVType *SpvBaseTy = getSPIRVTypeForVReg(SpvType->getOperand(1).getReg());
unsigned BW = getScalarOrVectorBitWidth(SpvBaseTy);
return getOrCreateIntCompositeOrNull(Val, MIRBuilder, SpvType, EmitIR,
ConstArr, BW,
LLVMArrTy->getNumElements());
}
Register
SPIRVGlobalRegistry::getOrCreateConstNullPtr(MachineIRBuilder &MIRBuilder,
SPIRVType *SpvType) {
const Type *LLVMTy = getTypeForSPIRVType(SpvType);
const PointerType *LLVMPtrTy = cast<PointerType>(LLVMTy);
// Find a constant in DT or build a new one.
Constant *CP = ConstantPointerNull::get(const_cast<PointerType *>(LLVMPtrTy));
Register Res = DT.find(CP, CurMF);
if (!Res.isValid()) {
LLT LLTy = LLT::pointer(LLVMPtrTy->getAddressSpace(), PointerSize);
Res = CurMF->getRegInfo().createGenericVirtualRegister(LLTy);
assignSPIRVTypeToVReg(SpvType, Res, *CurMF);
MIRBuilder.buildInstr(SPIRV::OpConstantNull)
.addDef(Res)
.addUse(getSPIRVTypeID(SpvType));
DT.add(CP, CurMF, Res);
}
return Res;
}
Register SPIRVGlobalRegistry::buildConstantSampler(
Register ResReg, unsigned AddrMode, unsigned Param, unsigned FilerMode,
MachineIRBuilder &MIRBuilder, SPIRVType *SpvType) {
SPIRVType *SampTy;
if (SpvType)
SampTy = getOrCreateSPIRVType(getTypeForSPIRVType(SpvType), MIRBuilder);
else
SampTy = getOrCreateSPIRVTypeByName("opencl.sampler_t", MIRBuilder);
auto Sampler =
ResReg.isValid()
? ResReg
: MIRBuilder.getMRI()->createVirtualRegister(&SPIRV::IDRegClass);
auto Res = MIRBuilder.buildInstr(SPIRV::OpConstantSampler)
.addDef(Sampler)
.addUse(getSPIRVTypeID(SampTy))
.addImm(AddrMode)
.addImm(Param)
.addImm(FilerMode);
assert(Res->getOperand(0).isReg());
return Res->getOperand(0).getReg();
}
Register SPIRVGlobalRegistry::buildGlobalVariable(
Register ResVReg, SPIRVType *BaseType, StringRef Name,
const GlobalValue *GV, SPIRV::StorageClass::StorageClass Storage,
const MachineInstr *Init, bool IsConst, bool HasLinkageTy,
SPIRV::LinkageType::LinkageType LinkageType, MachineIRBuilder &MIRBuilder,
bool IsInstSelector) {
const GlobalVariable *GVar = nullptr;
if (GV)
GVar = cast<const GlobalVariable>(GV);
else {
// If GV is not passed explicitly, use the name to find or construct
// the global variable.
Module *M = MIRBuilder.getMF().getFunction().getParent();
GVar = M->getGlobalVariable(Name);
if (GVar == nullptr) {
const Type *Ty = getTypeForSPIRVType(BaseType); // TODO: check type.
GVar = new GlobalVariable(*M, const_cast<Type *>(Ty), false,
GlobalValue::ExternalLinkage, nullptr,
Twine(Name));
}
GV = GVar;
}
Register Reg = DT.find(GVar, &MIRBuilder.getMF());
if (Reg.isValid()) {
if (Reg != ResVReg)
MIRBuilder.buildCopy(ResVReg, Reg);
return ResVReg;
}
auto MIB = MIRBuilder.buildInstr(SPIRV::OpVariable)
.addDef(ResVReg)
.addUse(getSPIRVTypeID(BaseType))
.addImm(static_cast<uint32_t>(Storage));
if (Init != 0) {
MIB.addUse(Init->getOperand(0).getReg());
}
// ISel may introduce a new register on this step, so we need to add it to
// DT and correct its type avoiding fails on the next stage.
if (IsInstSelector) {
const auto &Subtarget = CurMF->getSubtarget();
constrainSelectedInstRegOperands(*MIB, *Subtarget.getInstrInfo(),
*Subtarget.getRegisterInfo(),
*Subtarget.getRegBankInfo());
}
Reg = MIB->getOperand(0).getReg();
DT.add(GVar, &MIRBuilder.getMF(), Reg);
// Set to Reg the same type as ResVReg has.
auto MRI = MIRBuilder.getMRI();
assert(MRI->getType(ResVReg).isPointer() && "Pointer type is expected");
if (Reg != ResVReg) {
LLT RegLLTy = LLT::pointer(MRI->getType(ResVReg).getAddressSpace(), 32);
MRI->setType(Reg, RegLLTy);
assignSPIRVTypeToVReg(BaseType, Reg, MIRBuilder.getMF());
}
// If it's a global variable with name, output OpName for it.
if (GVar && GVar->hasName())
buildOpName(Reg, GVar->getName(), MIRBuilder);
// Output decorations for the GV.
// TODO: maybe move to GenerateDecorations pass.
if (IsConst)
buildOpDecorate(Reg, MIRBuilder, SPIRV::Decoration::Constant, {});
if (GVar && GVar->getAlign().valueOrOne().value() != 1) {
unsigned Alignment = (unsigned)GVar->getAlign().valueOrOne().value();
buildOpDecorate(Reg, MIRBuilder, SPIRV::Decoration::Alignment, {Alignment});
}
if (HasLinkageTy)
buildOpDecorate(Reg, MIRBuilder, SPIRV::Decoration::LinkageAttributes,
{static_cast<uint32_t>(LinkageType)}, Name);
SPIRV::BuiltIn::BuiltIn BuiltInId;
if (getSpirvBuiltInIdByName(Name, BuiltInId))
buildOpDecorate(Reg, MIRBuilder, SPIRV::Decoration::BuiltIn,
{static_cast<uint32_t>(BuiltInId)});
return Reg;
}
SPIRVType *SPIRVGlobalRegistry::getOpTypeArray(uint32_t NumElems,
SPIRVType *ElemType,
MachineIRBuilder &MIRBuilder,
bool EmitIR) {
assert((ElemType->getOpcode() != SPIRV::OpTypeVoid) &&
"Invalid array element type");
Register NumElementsVReg =
buildConstantInt(NumElems, MIRBuilder, nullptr, EmitIR);
auto MIB = MIRBuilder.buildInstr(SPIRV::OpTypeArray)
.addDef(createTypeVReg(MIRBuilder))
.addUse(getSPIRVTypeID(ElemType))
.addUse(NumElementsVReg);
return MIB;
}
SPIRVType *SPIRVGlobalRegistry::getOpTypeOpaque(const StructType *Ty,
MachineIRBuilder &MIRBuilder) {
assert(Ty->hasName());
const StringRef Name = Ty->hasName() ? Ty->getName() : "";
Register ResVReg = createTypeVReg(MIRBuilder);
auto MIB = MIRBuilder.buildInstr(SPIRV::OpTypeOpaque).addDef(ResVReg);
addStringImm(Name, MIB);
buildOpName(ResVReg, Name, MIRBuilder);
return MIB;
}
SPIRVType *SPIRVGlobalRegistry::getOpTypeStruct(const StructType *Ty,
MachineIRBuilder &MIRBuilder,
bool EmitIR) {
SmallVector<Register, 4> FieldTypes;
for (const auto &Elem : Ty->elements()) {
SPIRVType *ElemTy = findSPIRVType(Elem, MIRBuilder);
assert(ElemTy && ElemTy->getOpcode() != SPIRV::OpTypeVoid &&
"Invalid struct element type");
FieldTypes.push_back(getSPIRVTypeID(ElemTy));
}
Register ResVReg = createTypeVReg(MIRBuilder);
auto MIB = MIRBuilder.buildInstr(SPIRV::OpTypeStruct).addDef(ResVReg);
for (const auto &Ty : FieldTypes)
MIB.addUse(Ty);
if (Ty->hasName())
buildOpName(ResVReg, Ty->getName(), MIRBuilder);
if (Ty->isPacked())
buildOpDecorate(ResVReg, MIRBuilder, SPIRV::Decoration::CPacked, {});
return MIB;
}
SPIRVType *SPIRVGlobalRegistry::getOrCreateSpecialType(
const Type *Ty, MachineIRBuilder &MIRBuilder,
SPIRV::AccessQualifier::AccessQualifier AccQual) {
// Some OpenCL and SPIRV builtins like image2d_t are passed in as
// pointers, but should be treated as custom types like OpTypeImage.
if (auto PType = dyn_cast<PointerType>(Ty)) {
assert(!PType->isOpaque());
Ty = PType->getNonOpaquePointerElementType();
}
assert(isSpecialOpaqueType(Ty) && "Not a special opaque builtin type");
return SPIRV::lowerBuiltinType(Ty, AccQual, MIRBuilder, this);
}
SPIRVType *SPIRVGlobalRegistry::getOpTypePointer(
SPIRV::StorageClass::StorageClass SC, SPIRVType *ElemType,
MachineIRBuilder &MIRBuilder, Register Reg) {
if (!Reg.isValid())
Reg = createTypeVReg(MIRBuilder);
return MIRBuilder.buildInstr(SPIRV::OpTypePointer)
.addDef(Reg)
.addImm(static_cast<uint32_t>(SC))
.addUse(getSPIRVTypeID(ElemType));
}
SPIRVType *SPIRVGlobalRegistry::getOpTypeForwardPointer(
SPIRV::StorageClass::StorageClass SC, MachineIRBuilder &MIRBuilder) {
return MIRBuilder.buildInstr(SPIRV::OpTypeForwardPointer)
.addUse(createTypeVReg(MIRBuilder))
.addImm(static_cast<uint32_t>(SC));
}
SPIRVType *SPIRVGlobalRegistry::getOpTypeFunction(
SPIRVType *RetType, const SmallVectorImpl<SPIRVType *> &ArgTypes,
MachineIRBuilder &MIRBuilder) {
auto MIB = MIRBuilder.buildInstr(SPIRV::OpTypeFunction)
.addDef(createTypeVReg(MIRBuilder))
.addUse(getSPIRVTypeID(RetType));
for (const SPIRVType *ArgType : ArgTypes)
MIB.addUse(getSPIRVTypeID(ArgType));
return MIB;
}
SPIRVType *SPIRVGlobalRegistry::getOrCreateOpTypeFunctionWithArgs(
const Type *Ty, SPIRVType *RetType,
const SmallVectorImpl<SPIRVType *> &ArgTypes,
MachineIRBuilder &MIRBuilder) {
Register Reg = DT.find(Ty, &MIRBuilder.getMF());
if (Reg.isValid())
return getSPIRVTypeForVReg(Reg);
SPIRVType *SpirvType = getOpTypeFunction(RetType, ArgTypes, MIRBuilder);
return finishCreatingSPIRVType(Ty, SpirvType);
}
SPIRVType *SPIRVGlobalRegistry::findSPIRVType(
const Type *Ty, MachineIRBuilder &MIRBuilder,
SPIRV::AccessQualifier::AccessQualifier AccQual, bool EmitIR) {
Register Reg = DT.find(Ty, &MIRBuilder.getMF());
if (Reg.isValid())
return getSPIRVTypeForVReg(Reg);
if (ForwardPointerTypes.find(Ty) != ForwardPointerTypes.end())
return ForwardPointerTypes[Ty];
return restOfCreateSPIRVType(Ty, MIRBuilder, AccQual, EmitIR);
}
Register SPIRVGlobalRegistry::getSPIRVTypeID(const SPIRVType *SpirvType) const {
assert(SpirvType && "Attempting to get type id for nullptr type.");
if (SpirvType->getOpcode() == SPIRV::OpTypeForwardPointer)
return SpirvType->uses().begin()->getReg();
return SpirvType->defs().begin()->getReg();
}
SPIRVType *SPIRVGlobalRegistry::createSPIRVType(
const Type *Ty, MachineIRBuilder &MIRBuilder,
SPIRV::AccessQualifier::AccessQualifier AccQual, bool EmitIR) {
if (isSpecialOpaqueType(Ty))
return getOrCreateSpecialType(Ty, MIRBuilder, AccQual);
auto &TypeToSPIRVTypeMap = DT.getTypes()->getAllUses();
auto t = TypeToSPIRVTypeMap.find(Ty);
if (t != TypeToSPIRVTypeMap.end()) {
auto tt = t->second.find(&MIRBuilder.getMF());
if (tt != t->second.end())
return getSPIRVTypeForVReg(tt->second);
}
if (auto IType = dyn_cast<IntegerType>(Ty)) {
const unsigned Width = IType->getBitWidth();
return Width == 1 ? getOpTypeBool(MIRBuilder)
: getOpTypeInt(Width, MIRBuilder, false);
}
if (Ty->isFloatingPointTy())
return getOpTypeFloat(Ty->getPrimitiveSizeInBits(), MIRBuilder);
if (Ty->isVoidTy())
return getOpTypeVoid(MIRBuilder);
if (Ty->isVectorTy()) {
SPIRVType *El =
findSPIRVType(cast<FixedVectorType>(Ty)->getElementType(), MIRBuilder);
return getOpTypeVector(cast<FixedVectorType>(Ty)->getNumElements(), El,
MIRBuilder);
}
if (Ty->isArrayTy()) {
SPIRVType *El = findSPIRVType(Ty->getArrayElementType(), MIRBuilder);
return getOpTypeArray(Ty->getArrayNumElements(), El, MIRBuilder, EmitIR);
}
if (auto SType = dyn_cast<StructType>(Ty)) {
if (SType->isOpaque())
return getOpTypeOpaque(SType, MIRBuilder);
return getOpTypeStruct(SType, MIRBuilder, EmitIR);
}
if (auto FType = dyn_cast<FunctionType>(Ty)) {
SPIRVType *RetTy = findSPIRVType(FType->getReturnType(), MIRBuilder);
SmallVector<SPIRVType *, 4> ParamTypes;
for (const auto &t : FType->params()) {
ParamTypes.push_back(findSPIRVType(t, MIRBuilder));
}
return getOpTypeFunction(RetTy, ParamTypes, MIRBuilder);
}
if (auto PType = dyn_cast<PointerType>(Ty)) {
SPIRVType *SpvElementType;
// At the moment, all opaque pointers correspond to i8 element type.
// TODO: change the implementation once opaque pointers are supported
// in the SPIR-V specification.
if (PType->isOpaque())
SpvElementType = getOrCreateSPIRVIntegerType(8, MIRBuilder);
else
SpvElementType =
findSPIRVType(PType->getNonOpaquePointerElementType(), MIRBuilder,
SPIRV::AccessQualifier::ReadWrite, EmitIR);
auto SC = addressSpaceToStorageClass(PType->getAddressSpace());
// Null pointer means we have a loop in type definitions, make and
// return corresponding OpTypeForwardPointer.
if (SpvElementType == nullptr) {
if (ForwardPointerTypes.find(Ty) == ForwardPointerTypes.end())
ForwardPointerTypes[PType] = getOpTypeForwardPointer(SC, MIRBuilder);
return ForwardPointerTypes[PType];
}
Register Reg(0);
// If we have forward pointer associated with this type, use its register
// operand to create OpTypePointer.
if (ForwardPointerTypes.find(PType) != ForwardPointerTypes.end())
Reg = getSPIRVTypeID(ForwardPointerTypes[PType]);
return getOpTypePointer(SC, SpvElementType, MIRBuilder, Reg);
}
llvm_unreachable("Unable to convert LLVM type to SPIRVType");
}
SPIRVType *SPIRVGlobalRegistry::restOfCreateSPIRVType(
const Type *Ty, MachineIRBuilder &MIRBuilder,
SPIRV::AccessQualifier::AccessQualifier AccessQual, bool EmitIR) {
if (TypesInProcessing.count(Ty) && !Ty->isPointerTy())
return nullptr;
TypesInProcessing.insert(Ty);
SPIRVType *SpirvType = createSPIRVType(Ty, MIRBuilder, AccessQual, EmitIR);
TypesInProcessing.erase(Ty);
VRegToTypeMap[&MIRBuilder.getMF()][getSPIRVTypeID(SpirvType)] = SpirvType;
SPIRVToLLVMType[SpirvType] = Ty;
Register Reg = DT.find(Ty, &MIRBuilder.getMF());
// Do not add OpTypeForwardPointer to DT, a corresponding normal pointer type
// will be added later. For special types it is already added to DT.
if (SpirvType->getOpcode() != SPIRV::OpTypeForwardPointer && !Reg.isValid() &&
!isSpecialOpaqueType(Ty))
DT.add(Ty, &MIRBuilder.getMF(), getSPIRVTypeID(SpirvType));
return SpirvType;
}
SPIRVType *SPIRVGlobalRegistry::getSPIRVTypeForVReg(Register VReg) const {
auto t = VRegToTypeMap.find(CurMF);
if (t != VRegToTypeMap.end()) {
auto tt = t->second.find(VReg);
if (tt != t->second.end())
return tt->second;
}
return nullptr;
}
SPIRVType *SPIRVGlobalRegistry::getOrCreateSPIRVType(
const Type *Ty, MachineIRBuilder &MIRBuilder,
SPIRV::AccessQualifier::AccessQualifier AccessQual, bool EmitIR) {
Register Reg = DT.find(Ty, &MIRBuilder.getMF());
if (Reg.isValid() && !isSpecialOpaqueType(Ty))
return getSPIRVTypeForVReg(Reg);
TypesInProcessing.clear();
SPIRVType *STy = restOfCreateSPIRVType(Ty, MIRBuilder, AccessQual, EmitIR);
// Create normal pointer types for the corresponding OpTypeForwardPointers.
for (auto &CU : ForwardPointerTypes) {
const Type *Ty2 = CU.first;
SPIRVType *STy2 = CU.second;
if ((Reg = DT.find(Ty2, &MIRBuilder.getMF())).isValid())
STy2 = getSPIRVTypeForVReg(Reg);
else
STy2 = restOfCreateSPIRVType(Ty2, MIRBuilder, AccessQual, EmitIR);
if (Ty == Ty2)
STy = STy2;
}
ForwardPointerTypes.clear();
return STy;
}
bool SPIRVGlobalRegistry::isScalarOfType(Register VReg,
unsigned TypeOpcode) const {
SPIRVType *Type = getSPIRVTypeForVReg(VReg);
assert(Type && "isScalarOfType VReg has no type assigned");
return Type->getOpcode() == TypeOpcode;
}
bool SPIRVGlobalRegistry::isScalarOrVectorOfType(Register VReg,
unsigned TypeOpcode) const {
SPIRVType *Type = getSPIRVTypeForVReg(VReg);
assert(Type && "isScalarOrVectorOfType VReg has no type assigned");
if (Type->getOpcode() == TypeOpcode)
return true;
if (Type->getOpcode() == SPIRV::OpTypeVector) {
Register ScalarTypeVReg = Type->getOperand(1).getReg();
SPIRVType *ScalarType = getSPIRVTypeForVReg(ScalarTypeVReg);
return ScalarType->getOpcode() == TypeOpcode;
}
return false;
}
unsigned
SPIRVGlobalRegistry::getScalarOrVectorBitWidth(const SPIRVType *Type) const {
assert(Type && "Invalid Type pointer");
if (Type->getOpcode() == SPIRV::OpTypeVector) {
auto EleTypeReg = Type->getOperand(1).getReg();
Type = getSPIRVTypeForVReg(EleTypeReg);
}
if (Type->getOpcode() == SPIRV::OpTypeInt ||
Type->getOpcode() == SPIRV::OpTypeFloat)
return Type->getOperand(1).getImm();
if (Type->getOpcode() == SPIRV::OpTypeBool)
return 1;
llvm_unreachable("Attempting to get bit width of non-integer/float type.");
}
bool SPIRVGlobalRegistry::isScalarOrVectorSigned(const SPIRVType *Type) const {
assert(Type && "Invalid Type pointer");
if (Type->getOpcode() == SPIRV::OpTypeVector) {
auto EleTypeReg = Type->getOperand(1).getReg();
Type = getSPIRVTypeForVReg(EleTypeReg);
}
if (Type->getOpcode() == SPIRV::OpTypeInt)
return Type->getOperand(2).getImm() != 0;
llvm_unreachable("Attempting to get sign of non-integer type.");
}
SPIRV::StorageClass::StorageClass
SPIRVGlobalRegistry::getPointerStorageClass(Register VReg) const {
SPIRVType *Type = getSPIRVTypeForVReg(VReg);
assert(Type && Type->getOpcode() == SPIRV::OpTypePointer &&
Type->getOperand(1).isImm() && "Pointer type is expected");
return static_cast<SPIRV::StorageClass::StorageClass>(
Type->getOperand(1).getImm());
}
SPIRVType *SPIRVGlobalRegistry::getOrCreateOpTypeImage(
MachineIRBuilder &MIRBuilder, SPIRVType *SampledType, SPIRV::Dim::Dim Dim,
uint32_t Depth, uint32_t Arrayed, uint32_t Multisampled, uint32_t Sampled,
SPIRV::ImageFormat::ImageFormat ImageFormat,
SPIRV::AccessQualifier::AccessQualifier AccessQual) {
SPIRV::ImageTypeDescriptor TD(SPIRVToLLVMType.lookup(SampledType), Dim, Depth,
Arrayed, Multisampled, Sampled, ImageFormat,
AccessQual);
if (auto *Res = checkSpecialInstr(TD, MIRBuilder))
return Res;
Register ResVReg = createTypeVReg(MIRBuilder);
DT.add(TD, &MIRBuilder.getMF(), ResVReg);
return MIRBuilder.buildInstr(SPIRV::OpTypeImage)
.addDef(ResVReg)
.addUse(getSPIRVTypeID(SampledType))
.addImm(Dim)
.addImm(Depth) // Depth (whether or not it is a Depth image).
.addImm(Arrayed) // Arrayed.
.addImm(Multisampled) // Multisampled (0 = only single-sample).
.addImm(Sampled) // Sampled (0 = usage known at runtime).
.addImm(ImageFormat)
.addImm(AccessQual);
}
SPIRVType *
SPIRVGlobalRegistry::getOrCreateOpTypeSampler(MachineIRBuilder &MIRBuilder) {
SPIRV::SamplerTypeDescriptor TD;
if (auto *Res = checkSpecialInstr(TD, MIRBuilder))
return Res;
Register ResVReg = createTypeVReg(MIRBuilder);
DT.add(TD, &MIRBuilder.getMF(), ResVReg);
return MIRBuilder.buildInstr(SPIRV::OpTypeSampler).addDef(ResVReg);
}
SPIRVType *SPIRVGlobalRegistry::getOrCreateOpTypePipe(
MachineIRBuilder &MIRBuilder,
SPIRV::AccessQualifier::AccessQualifier AccessQual) {
SPIRV::PipeTypeDescriptor TD(AccessQual);
if (auto *Res = checkSpecialInstr(TD, MIRBuilder))
return Res;
Register ResVReg = createTypeVReg(MIRBuilder);
DT.add(TD, &MIRBuilder.getMF(), ResVReg);
return MIRBuilder.buildInstr(SPIRV::OpTypePipe)
.addDef(ResVReg)
.addImm(AccessQual);
}
SPIRVType *SPIRVGlobalRegistry::getOrCreateOpTypeDeviceEvent(
MachineIRBuilder &MIRBuilder) {
SPIRV::DeviceEventTypeDescriptor TD;
if (auto *Res = checkSpecialInstr(TD, MIRBuilder))
return Res;
Register ResVReg = createTypeVReg(MIRBuilder);
DT.add(TD, &MIRBuilder.getMF(), ResVReg);
return MIRBuilder.buildInstr(SPIRV::OpTypeDeviceEvent).addDef(ResVReg);
}
SPIRVType *SPIRVGlobalRegistry::getOrCreateOpTypeSampledImage(
SPIRVType *ImageType, MachineIRBuilder &MIRBuilder) {
SPIRV::SampledImageTypeDescriptor TD(
SPIRVToLLVMType.lookup(MIRBuilder.getMF().getRegInfo().getVRegDef(
ImageType->getOperand(1).getReg())),
ImageType);
if (auto *Res = checkSpecialInstr(TD, MIRBuilder))
return Res;
Register ResVReg = createTypeVReg(MIRBuilder);
DT.add(TD, &MIRBuilder.getMF(), ResVReg);
return MIRBuilder.buildInstr(SPIRV::OpTypeSampledImage)
.addDef(ResVReg)
.addUse(getSPIRVTypeID(ImageType));
}
SPIRVType *SPIRVGlobalRegistry::getOrCreateOpTypeByOpcode(
const Type *Ty, MachineIRBuilder &MIRBuilder, unsigned Opcode) {
Register ResVReg = DT.find(Ty, &MIRBuilder.getMF());
if (ResVReg.isValid())
return MIRBuilder.getMF().getRegInfo().getUniqueVRegDef(ResVReg);
ResVReg = createTypeVReg(MIRBuilder);
DT.add(Ty, &MIRBuilder.getMF(), ResVReg);
return MIRBuilder.buildInstr(Opcode).addDef(ResVReg);
}
const MachineInstr *
SPIRVGlobalRegistry::checkSpecialInstr(const SPIRV::SpecialTypeDescriptor &TD,
MachineIRBuilder &MIRBuilder) {
Register Reg = DT.find(TD, &MIRBuilder.getMF());
if (Reg.isValid())
return MIRBuilder.getMF().getRegInfo().getUniqueVRegDef(Reg);
return nullptr;
}
// TODO: maybe use tablegen to implement this.
SPIRVType *
SPIRVGlobalRegistry::getOrCreateSPIRVTypeByName(StringRef TypeStr,
MachineIRBuilder &MIRBuilder) {
unsigned VecElts = 0;
auto &Ctx = MIRBuilder.getMF().getFunction().getContext();
// Parse type name in either "typeN" or "type vector[N]" format, where
// N is the number of elements of the vector.
Type *Type;
if (TypeStr.startswith("void")) {
Type = Type::getVoidTy(Ctx);
TypeStr = TypeStr.substr(strlen("void"));
} else if (TypeStr.startswith("int") || TypeStr.startswith("uint")) {
Type = Type::getInt32Ty(Ctx);
TypeStr = TypeStr.startswith("int") ? TypeStr.substr(strlen("int"))
: TypeStr.substr(strlen("uint"));
} else if (TypeStr.startswith("float")) {
Type = Type::getFloatTy(Ctx);
TypeStr = TypeStr.substr(strlen("float"));
} else if (TypeStr.startswith("half")) {
Type = Type::getHalfTy(Ctx);
TypeStr = TypeStr.substr(strlen("half"));
} else if (TypeStr.startswith("opencl.sampler_t")) {
Type = StructType::create(Ctx, "opencl.sampler_t");
} else
llvm_unreachable("Unable to recognize SPIRV type name.");
if (TypeStr.startswith(" vector[")) {
TypeStr = TypeStr.substr(strlen(" vector["));
TypeStr = TypeStr.substr(0, TypeStr.find(']'));
}
TypeStr.getAsInteger(10, VecElts);
auto SpirvTy = getOrCreateSPIRVType(Type, MIRBuilder);
if (VecElts > 0)
SpirvTy = getOrCreateSPIRVVectorType(SpirvTy, VecElts, MIRBuilder);
return SpirvTy;
}
SPIRVType *
SPIRVGlobalRegistry::getOrCreateSPIRVIntegerType(unsigned BitWidth,
MachineIRBuilder &MIRBuilder) {
return getOrCreateSPIRVType(
IntegerType::get(MIRBuilder.getMF().getFunction().getContext(), BitWidth),
MIRBuilder);
}
SPIRVType *SPIRVGlobalRegistry::finishCreatingSPIRVType(const Type *LLVMTy,
SPIRVType *SpirvType) {
assert(CurMF == SpirvType->getMF());
VRegToTypeMap[CurMF][getSPIRVTypeID(SpirvType)] = SpirvType;
SPIRVToLLVMType[SpirvType] = LLVMTy;
DT.add(LLVMTy, CurMF, getSPIRVTypeID(SpirvType));
return SpirvType;
}
SPIRVType *SPIRVGlobalRegistry::getOrCreateSPIRVIntegerType(
unsigned BitWidth, MachineInstr &I, const SPIRVInstrInfo &TII) {
Type *LLVMTy = IntegerType::get(CurMF->getFunction().getContext(), BitWidth);
Register Reg = DT.find(LLVMTy, CurMF);
if (Reg.isValid())
return getSPIRVTypeForVReg(Reg);
MachineBasicBlock &BB = *I.getParent();
auto MIB = BuildMI(BB, I, I.getDebugLoc(), TII.get(SPIRV::OpTypeInt))
.addDef(createTypeVReg(CurMF->getRegInfo()))
.addImm(BitWidth)
.addImm(0);
return finishCreatingSPIRVType(LLVMTy, MIB);
}
SPIRVType *