779 lines
32 KiB
C++
779 lines
32 KiB
C++
//===------- CGHLSLBuiltins.cpp - Emit LLVM Code for HLSL builtins --------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This contains code to emit HLSL Builtin calls as LLVM code.
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//
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//===----------------------------------------------------------------------===//
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#include "CGBuiltin.h"
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#include "CGHLSLRuntime.h"
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using namespace clang;
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using namespace CodeGen;
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using namespace llvm;
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static Value *handleAsDoubleBuiltin(CodeGenFunction &CGF, const CallExpr *E) {
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assert((E->getArg(0)->getType()->hasUnsignedIntegerRepresentation() &&
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E->getArg(1)->getType()->hasUnsignedIntegerRepresentation()) &&
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"asdouble operands types mismatch");
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Value *OpLowBits = CGF.EmitScalarExpr(E->getArg(0));
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Value *OpHighBits = CGF.EmitScalarExpr(E->getArg(1));
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llvm::Type *ResultType = CGF.DoubleTy;
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int N = 1;
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if (auto *VTy = E->getArg(0)->getType()->getAs<clang::VectorType>()) {
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N = VTy->getNumElements();
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ResultType = llvm::FixedVectorType::get(CGF.DoubleTy, N);
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}
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if (CGF.CGM.getTarget().getTriple().isDXIL())
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return CGF.Builder.CreateIntrinsic(
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/*ReturnType=*/ResultType, Intrinsic::dx_asdouble,
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{OpLowBits, OpHighBits}, nullptr, "hlsl.asdouble");
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if (!E->getArg(0)->getType()->isVectorType()) {
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OpLowBits = CGF.Builder.CreateVectorSplat(1, OpLowBits);
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OpHighBits = CGF.Builder.CreateVectorSplat(1, OpHighBits);
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}
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llvm::SmallVector<int> Mask;
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for (int i = 0; i < N; i++) {
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Mask.push_back(i);
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Mask.push_back(i + N);
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}
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Value *BitVec = CGF.Builder.CreateShuffleVector(OpLowBits, OpHighBits, Mask);
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return CGF.Builder.CreateBitCast(BitVec, ResultType);
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}
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static Value *handleHlslClip(const CallExpr *E, CodeGenFunction *CGF) {
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Value *Op0 = CGF->EmitScalarExpr(E->getArg(0));
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Constant *FZeroConst = ConstantFP::getZero(CGF->FloatTy);
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Value *CMP;
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Value *LastInstr;
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if (const auto *VecTy = E->getArg(0)->getType()->getAs<clang::VectorType>()) {
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FZeroConst = ConstantVector::getSplat(
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ElementCount::getFixed(VecTy->getNumElements()), FZeroConst);
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auto *FCompInst = CGF->Builder.CreateFCmpOLT(Op0, FZeroConst);
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CMP = CGF->Builder.CreateIntrinsic(
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CGF->Builder.getInt1Ty(), CGF->CGM.getHLSLRuntime().getAnyIntrinsic(),
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{FCompInst});
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} else {
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CMP = CGF->Builder.CreateFCmpOLT(Op0, FZeroConst);
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}
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if (CGF->CGM.getTarget().getTriple().isDXIL()) {
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LastInstr = CGF->Builder.CreateIntrinsic(Intrinsic::dx_discard, {CMP});
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} else if (CGF->CGM.getTarget().getTriple().isSPIRV()) {
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BasicBlock *LT0 = CGF->createBasicBlock("lt0", CGF->CurFn);
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BasicBlock *End = CGF->createBasicBlock("end", CGF->CurFn);
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CGF->Builder.CreateCondBr(CMP, LT0, End);
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CGF->Builder.SetInsertPoint(LT0);
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CGF->Builder.CreateIntrinsic(Intrinsic::spv_discard, {});
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LastInstr = CGF->Builder.CreateBr(End);
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CGF->Builder.SetInsertPoint(End);
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} else {
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llvm_unreachable("Backend Codegen not supported.");
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}
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return LastInstr;
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}
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static Value *handleHlslSplitdouble(const CallExpr *E, CodeGenFunction *CGF) {
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Value *Op0 = CGF->EmitScalarExpr(E->getArg(0));
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const auto *OutArg1 = dyn_cast<HLSLOutArgExpr>(E->getArg(1));
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const auto *OutArg2 = dyn_cast<HLSLOutArgExpr>(E->getArg(2));
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CallArgList Args;
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LValue Op1TmpLValue =
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CGF->EmitHLSLOutArgExpr(OutArg1, Args, OutArg1->getType());
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LValue Op2TmpLValue =
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CGF->EmitHLSLOutArgExpr(OutArg2, Args, OutArg2->getType());
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if (CGF->getTarget().getCXXABI().areArgsDestroyedLeftToRightInCallee())
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Args.reverseWritebacks();
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Value *LowBits = nullptr;
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Value *HighBits = nullptr;
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if (CGF->CGM.getTarget().getTriple().isDXIL()) {
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llvm::Type *RetElementTy = CGF->Int32Ty;
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if (auto *Op0VecTy = E->getArg(0)->getType()->getAs<clang::VectorType>())
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RetElementTy = llvm::VectorType::get(
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CGF->Int32Ty, ElementCount::getFixed(Op0VecTy->getNumElements()));
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auto *RetTy = llvm::StructType::get(RetElementTy, RetElementTy);
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CallInst *CI = CGF->Builder.CreateIntrinsic(
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RetTy, Intrinsic::dx_splitdouble, {Op0}, nullptr, "hlsl.splitdouble");
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LowBits = CGF->Builder.CreateExtractValue(CI, 0);
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HighBits = CGF->Builder.CreateExtractValue(CI, 1);
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} else {
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// For Non DXIL targets we generate the instructions.
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if (!Op0->getType()->isVectorTy()) {
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FixedVectorType *DestTy = FixedVectorType::get(CGF->Int32Ty, 2);
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Value *Bitcast = CGF->Builder.CreateBitCast(Op0, DestTy);
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LowBits = CGF->Builder.CreateExtractElement(Bitcast, (uint64_t)0);
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HighBits = CGF->Builder.CreateExtractElement(Bitcast, 1);
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} else {
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int NumElements = 1;
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if (const auto *VecTy =
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E->getArg(0)->getType()->getAs<clang::VectorType>())
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NumElements = VecTy->getNumElements();
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FixedVectorType *Uint32VecTy =
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FixedVectorType::get(CGF->Int32Ty, NumElements * 2);
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Value *Uint32Vec = CGF->Builder.CreateBitCast(Op0, Uint32VecTy);
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if (NumElements == 1) {
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LowBits = CGF->Builder.CreateExtractElement(Uint32Vec, (uint64_t)0);
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HighBits = CGF->Builder.CreateExtractElement(Uint32Vec, 1);
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} else {
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SmallVector<int> EvenMask, OddMask;
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for (int I = 0, E = NumElements; I != E; ++I) {
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EvenMask.push_back(I * 2);
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OddMask.push_back(I * 2 + 1);
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}
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LowBits = CGF->Builder.CreateShuffleVector(Uint32Vec, EvenMask);
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HighBits = CGF->Builder.CreateShuffleVector(Uint32Vec, OddMask);
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}
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}
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}
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CGF->Builder.CreateStore(LowBits, Op1TmpLValue.getAddress());
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auto *LastInst =
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CGF->Builder.CreateStore(HighBits, Op2TmpLValue.getAddress());
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CGF->EmitWritebacks(Args);
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return LastInst;
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}
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// Return dot product intrinsic that corresponds to the QT scalar type
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static Intrinsic::ID getDotProductIntrinsic(CGHLSLRuntime &RT, QualType QT) {
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if (QT->isFloatingType())
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return RT.getFDotIntrinsic();
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if (QT->isSignedIntegerType())
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return RT.getSDotIntrinsic();
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assert(QT->isUnsignedIntegerType());
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return RT.getUDotIntrinsic();
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}
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static Intrinsic::ID getFirstBitHighIntrinsic(CGHLSLRuntime &RT, QualType QT) {
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if (QT->hasSignedIntegerRepresentation()) {
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return RT.getFirstBitSHighIntrinsic();
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}
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assert(QT->hasUnsignedIntegerRepresentation());
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return RT.getFirstBitUHighIntrinsic();
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}
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// Return wave active sum that corresponds to the QT scalar type
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static Intrinsic::ID getWaveActiveSumIntrinsic(llvm::Triple::ArchType Arch,
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CGHLSLRuntime &RT, QualType QT) {
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switch (Arch) {
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case llvm::Triple::spirv:
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return Intrinsic::spv_wave_reduce_sum;
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case llvm::Triple::dxil: {
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if (QT->isUnsignedIntegerType())
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return Intrinsic::dx_wave_reduce_usum;
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return Intrinsic::dx_wave_reduce_sum;
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}
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default:
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llvm_unreachable("Intrinsic WaveActiveSum"
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" not supported by target architecture");
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}
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}
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// Return wave active sum that corresponds to the QT scalar type
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static Intrinsic::ID getWaveActiveMaxIntrinsic(llvm::Triple::ArchType Arch,
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CGHLSLRuntime &RT, QualType QT) {
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switch (Arch) {
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case llvm::Triple::spirv:
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if (QT->isUnsignedIntegerType())
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return Intrinsic::spv_wave_reduce_umax;
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return Intrinsic::spv_wave_reduce_max;
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case llvm::Triple::dxil: {
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if (QT->isUnsignedIntegerType())
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return Intrinsic::dx_wave_reduce_umax;
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return Intrinsic::dx_wave_reduce_max;
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}
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default:
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llvm_unreachable("Intrinsic WaveActiveMax"
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" not supported by target architecture");
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}
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}
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Value *CodeGenFunction::EmitHLSLBuiltinExpr(unsigned BuiltinID,
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const CallExpr *E,
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ReturnValueSlot ReturnValue) {
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if (!getLangOpts().HLSL)
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return nullptr;
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switch (BuiltinID) {
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case Builtin::BI__builtin_hlsl_adduint64: {
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Value *OpA = EmitScalarExpr(E->getArg(0));
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Value *OpB = EmitScalarExpr(E->getArg(1));
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QualType Arg0Ty = E->getArg(0)->getType();
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uint64_t NumElements = Arg0Ty->castAs<VectorType>()->getNumElements();
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assert(Arg0Ty == E->getArg(1)->getType() &&
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"AddUint64 operand types must match");
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assert(Arg0Ty->hasIntegerRepresentation() &&
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"AddUint64 operands must have an integer representation");
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assert((NumElements == 2 || NumElements == 4) &&
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"AddUint64 operands must have 2 or 4 elements");
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llvm::Value *LowA;
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llvm::Value *HighA;
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llvm::Value *LowB;
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llvm::Value *HighB;
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// Obtain low and high words of inputs A and B
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if (NumElements == 2) {
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LowA = Builder.CreateExtractElement(OpA, (uint64_t)0, "LowA");
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HighA = Builder.CreateExtractElement(OpA, (uint64_t)1, "HighA");
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LowB = Builder.CreateExtractElement(OpB, (uint64_t)0, "LowB");
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HighB = Builder.CreateExtractElement(OpB, (uint64_t)1, "HighB");
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} else {
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LowA = Builder.CreateShuffleVector(OpA, {0, 2}, "LowA");
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HighA = Builder.CreateShuffleVector(OpA, {1, 3}, "HighA");
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LowB = Builder.CreateShuffleVector(OpB, {0, 2}, "LowB");
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HighB = Builder.CreateShuffleVector(OpB, {1, 3}, "HighB");
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}
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// Use an uadd_with_overflow to compute the sum of low words and obtain a
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// carry value
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llvm::Value *Carry;
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llvm::Value *LowSum = EmitOverflowIntrinsic(
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*this, Intrinsic::uadd_with_overflow, LowA, LowB, Carry);
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llvm::Value *ZExtCarry =
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Builder.CreateZExt(Carry, HighA->getType(), "CarryZExt");
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// Sum the high words and the carry
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llvm::Value *HighSum = Builder.CreateAdd(HighA, HighB, "HighSum");
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llvm::Value *HighSumPlusCarry =
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Builder.CreateAdd(HighSum, ZExtCarry, "HighSumPlusCarry");
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if (NumElements == 4) {
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return Builder.CreateShuffleVector(LowSum, HighSumPlusCarry, {0, 2, 1, 3},
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"hlsl.AddUint64");
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}
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llvm::Value *Result = PoisonValue::get(OpA->getType());
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Result = Builder.CreateInsertElement(Result, LowSum, (uint64_t)0,
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"hlsl.AddUint64.upto0");
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Result = Builder.CreateInsertElement(Result, HighSumPlusCarry, (uint64_t)1,
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"hlsl.AddUint64");
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return Result;
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}
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case Builtin::BI__builtin_hlsl_resource_getpointer: {
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Value *HandleOp = EmitScalarExpr(E->getArg(0));
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Value *IndexOp = EmitScalarExpr(E->getArg(1));
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llvm::Type *RetTy = ConvertType(E->getType());
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return Builder.CreateIntrinsic(
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RetTy, CGM.getHLSLRuntime().getCreateResourceGetPointerIntrinsic(),
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ArrayRef<Value *>{HandleOp, IndexOp});
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}
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case Builtin::BI__builtin_hlsl_resource_uninitializedhandle: {
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llvm::Type *HandleTy = CGM.getTypes().ConvertType(E->getType());
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return llvm::PoisonValue::get(HandleTy);
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}
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case Builtin::BI__builtin_hlsl_resource_handlefrombinding: {
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llvm::Type *HandleTy = CGM.getTypes().ConvertType(E->getType());
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Value *RegisterOp = EmitScalarExpr(E->getArg(1));
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Value *SpaceOp = EmitScalarExpr(E->getArg(2));
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Value *RangeOp = EmitScalarExpr(E->getArg(3));
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Value *IndexOp = EmitScalarExpr(E->getArg(4));
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Value *Name = EmitScalarExpr(E->getArg(5));
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// FIXME: NonUniformResourceIndex bit is not yet implemented
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// (llvm/llvm-project#135452)
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Value *NonUniform =
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llvm::ConstantInt::get(llvm::Type::getInt1Ty(getLLVMContext()), false);
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llvm::Intrinsic::ID IntrinsicID =
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CGM.getHLSLRuntime().getCreateHandleFromBindingIntrinsic();
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SmallVector<Value *> Args{SpaceOp, RegisterOp, RangeOp,
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IndexOp, NonUniform, Name};
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return Builder.CreateIntrinsic(HandleTy, IntrinsicID, Args);
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}
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case Builtin::BI__builtin_hlsl_resource_handlefromimplicitbinding: {
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llvm::Type *HandleTy = CGM.getTypes().ConvertType(E->getType());
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Value *SpaceOp = EmitScalarExpr(E->getArg(1));
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Value *RangeOp = EmitScalarExpr(E->getArg(2));
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Value *IndexOp = EmitScalarExpr(E->getArg(3));
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Value *OrderID = EmitScalarExpr(E->getArg(4));
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Value *Name = EmitScalarExpr(E->getArg(5));
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// FIXME: NonUniformResourceIndex bit is not yet implemented
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// (llvm/llvm-project#135452)
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Value *NonUniform =
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llvm::ConstantInt::get(llvm::Type::getInt1Ty(getLLVMContext()), false);
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llvm::Intrinsic::ID IntrinsicID =
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CGM.getHLSLRuntime().getCreateHandleFromImplicitBindingIntrinsic();
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SmallVector<Value *> Args{OrderID, SpaceOp, RangeOp,
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IndexOp, NonUniform, Name};
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return Builder.CreateIntrinsic(HandleTy, IntrinsicID, Args);
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}
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case Builtin::BI__builtin_hlsl_all: {
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Value *Op0 = EmitScalarExpr(E->getArg(0));
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return Builder.CreateIntrinsic(
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/*ReturnType=*/llvm::Type::getInt1Ty(getLLVMContext()),
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CGM.getHLSLRuntime().getAllIntrinsic(), ArrayRef<Value *>{Op0}, nullptr,
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"hlsl.all");
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}
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case Builtin::BI__builtin_hlsl_and: {
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Value *Op0 = EmitScalarExpr(E->getArg(0));
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Value *Op1 = EmitScalarExpr(E->getArg(1));
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return Builder.CreateAnd(Op0, Op1, "hlsl.and");
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}
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case Builtin::BI__builtin_hlsl_or: {
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Value *Op0 = EmitScalarExpr(E->getArg(0));
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Value *Op1 = EmitScalarExpr(E->getArg(1));
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return Builder.CreateOr(Op0, Op1, "hlsl.or");
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}
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case Builtin::BI__builtin_hlsl_any: {
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Value *Op0 = EmitScalarExpr(E->getArg(0));
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return Builder.CreateIntrinsic(
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/*ReturnType=*/llvm::Type::getInt1Ty(getLLVMContext()),
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CGM.getHLSLRuntime().getAnyIntrinsic(), ArrayRef<Value *>{Op0}, nullptr,
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"hlsl.any");
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}
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case Builtin::BI__builtin_hlsl_asdouble:
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return handleAsDoubleBuiltin(*this, E);
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case Builtin::BI__builtin_hlsl_elementwise_clamp: {
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Value *OpX = EmitScalarExpr(E->getArg(0));
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Value *OpMin = EmitScalarExpr(E->getArg(1));
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Value *OpMax = EmitScalarExpr(E->getArg(2));
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QualType Ty = E->getArg(0)->getType();
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if (auto *VecTy = Ty->getAs<VectorType>())
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Ty = VecTy->getElementType();
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Intrinsic::ID Intr;
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if (Ty->isFloatingType()) {
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Intr = CGM.getHLSLRuntime().getNClampIntrinsic();
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} else if (Ty->isUnsignedIntegerType()) {
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Intr = CGM.getHLSLRuntime().getUClampIntrinsic();
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} else {
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assert(Ty->isSignedIntegerType());
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Intr = CGM.getHLSLRuntime().getSClampIntrinsic();
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}
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return Builder.CreateIntrinsic(
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/*ReturnType=*/OpX->getType(), Intr,
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ArrayRef<Value *>{OpX, OpMin, OpMax}, nullptr, "hlsl.clamp");
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}
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case Builtin::BI__builtin_hlsl_crossf16:
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case Builtin::BI__builtin_hlsl_crossf32: {
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Value *Op0 = EmitScalarExpr(E->getArg(0));
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Value *Op1 = EmitScalarExpr(E->getArg(1));
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assert(E->getArg(0)->getType()->hasFloatingRepresentation() &&
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E->getArg(1)->getType()->hasFloatingRepresentation() &&
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"cross operands must have a float representation");
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// make sure each vector has exactly 3 elements
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assert(
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E->getArg(0)->getType()->castAs<VectorType>()->getNumElements() == 3 &&
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E->getArg(1)->getType()->castAs<VectorType>()->getNumElements() == 3 &&
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"input vectors must have 3 elements each");
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return Builder.CreateIntrinsic(
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/*ReturnType=*/Op0->getType(), CGM.getHLSLRuntime().getCrossIntrinsic(),
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ArrayRef<Value *>{Op0, Op1}, nullptr, "hlsl.cross");
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}
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case Builtin::BI__builtin_hlsl_dot: {
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Value *Op0 = EmitScalarExpr(E->getArg(0));
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Value *Op1 = EmitScalarExpr(E->getArg(1));
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llvm::Type *T0 = Op0->getType();
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llvm::Type *T1 = Op1->getType();
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// If the arguments are scalars, just emit a multiply
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if (!T0->isVectorTy() && !T1->isVectorTy()) {
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if (T0->isFloatingPointTy())
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return Builder.CreateFMul(Op0, Op1, "hlsl.dot");
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if (T0->isIntegerTy())
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return Builder.CreateMul(Op0, Op1, "hlsl.dot");
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llvm_unreachable(
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"Scalar dot product is only supported on ints and floats.");
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}
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// For vectors, validate types and emit the appropriate intrinsic
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assert(CGM.getContext().hasSameUnqualifiedType(E->getArg(0)->getType(),
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E->getArg(1)->getType()) &&
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"Dot product operands must have the same type.");
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auto *VecTy0 = E->getArg(0)->getType()->castAs<VectorType>();
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assert(VecTy0 && "Dot product argument must be a vector.");
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return Builder.CreateIntrinsic(
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/*ReturnType=*/T0->getScalarType(),
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getDotProductIntrinsic(CGM.getHLSLRuntime(), VecTy0->getElementType()),
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ArrayRef<Value *>{Op0, Op1}, nullptr, "hlsl.dot");
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}
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case Builtin::BI__builtin_hlsl_dot4add_i8packed: {
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Value *X = EmitScalarExpr(E->getArg(0));
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Value *Y = EmitScalarExpr(E->getArg(1));
|
|
Value *Acc = EmitScalarExpr(E->getArg(2));
|
|
|
|
Intrinsic::ID ID = CGM.getHLSLRuntime().getDot4AddI8PackedIntrinsic();
|
|
// Note that the argument order disagrees between the builtin and the
|
|
// intrinsic here.
|
|
return Builder.CreateIntrinsic(
|
|
/*ReturnType=*/Acc->getType(), ID, ArrayRef<Value *>{Acc, X, Y},
|
|
nullptr, "hlsl.dot4add.i8packed");
|
|
}
|
|
case Builtin::BI__builtin_hlsl_dot4add_u8packed: {
|
|
Value *X = EmitScalarExpr(E->getArg(0));
|
|
Value *Y = EmitScalarExpr(E->getArg(1));
|
|
Value *Acc = EmitScalarExpr(E->getArg(2));
|
|
|
|
Intrinsic::ID ID = CGM.getHLSLRuntime().getDot4AddU8PackedIntrinsic();
|
|
// Note that the argument order disagrees between the builtin and the
|
|
// intrinsic here.
|
|
return Builder.CreateIntrinsic(
|
|
/*ReturnType=*/Acc->getType(), ID, ArrayRef<Value *>{Acc, X, Y},
|
|
nullptr, "hlsl.dot4add.u8packed");
|
|
}
|
|
case Builtin::BI__builtin_hlsl_elementwise_firstbithigh: {
|
|
Value *X = EmitScalarExpr(E->getArg(0));
|
|
|
|
return Builder.CreateIntrinsic(
|
|
/*ReturnType=*/ConvertType(E->getType()),
|
|
getFirstBitHighIntrinsic(CGM.getHLSLRuntime(), E->getArg(0)->getType()),
|
|
ArrayRef<Value *>{X}, nullptr, "hlsl.firstbithigh");
|
|
}
|
|
case Builtin::BI__builtin_hlsl_elementwise_firstbitlow: {
|
|
Value *X = EmitScalarExpr(E->getArg(0));
|
|
|
|
return Builder.CreateIntrinsic(
|
|
/*ReturnType=*/ConvertType(E->getType()),
|
|
CGM.getHLSLRuntime().getFirstBitLowIntrinsic(), ArrayRef<Value *>{X},
|
|
nullptr, "hlsl.firstbitlow");
|
|
}
|
|
case Builtin::BI__builtin_hlsl_lerp: {
|
|
Value *X = EmitScalarExpr(E->getArg(0));
|
|
Value *Y = EmitScalarExpr(E->getArg(1));
|
|
Value *S = EmitScalarExpr(E->getArg(2));
|
|
if (!E->getArg(0)->getType()->hasFloatingRepresentation())
|
|
llvm_unreachable("lerp operand must have a float representation");
|
|
return Builder.CreateIntrinsic(
|
|
/*ReturnType=*/X->getType(), CGM.getHLSLRuntime().getLerpIntrinsic(),
|
|
ArrayRef<Value *>{X, Y, S}, nullptr, "hlsl.lerp");
|
|
}
|
|
case Builtin::BI__builtin_hlsl_normalize: {
|
|
Value *X = EmitScalarExpr(E->getArg(0));
|
|
|
|
assert(E->getArg(0)->getType()->hasFloatingRepresentation() &&
|
|
"normalize operand must have a float representation");
|
|
|
|
return Builder.CreateIntrinsic(
|
|
/*ReturnType=*/X->getType(),
|
|
CGM.getHLSLRuntime().getNormalizeIntrinsic(), ArrayRef<Value *>{X},
|
|
nullptr, "hlsl.normalize");
|
|
}
|
|
case Builtin::BI__builtin_hlsl_elementwise_degrees: {
|
|
Value *X = EmitScalarExpr(E->getArg(0));
|
|
|
|
assert(E->getArg(0)->getType()->hasFloatingRepresentation() &&
|
|
"degree operand must have a float representation");
|
|
|
|
return Builder.CreateIntrinsic(
|
|
/*ReturnType=*/X->getType(), CGM.getHLSLRuntime().getDegreesIntrinsic(),
|
|
ArrayRef<Value *>{X}, nullptr, "hlsl.degrees");
|
|
}
|
|
case Builtin::BI__builtin_hlsl_elementwise_frac: {
|
|
Value *Op0 = EmitScalarExpr(E->getArg(0));
|
|
if (!E->getArg(0)->getType()->hasFloatingRepresentation())
|
|
llvm_unreachable("frac operand must have a float representation");
|
|
return Builder.CreateIntrinsic(
|
|
/*ReturnType=*/Op0->getType(), CGM.getHLSLRuntime().getFracIntrinsic(),
|
|
ArrayRef<Value *>{Op0}, nullptr, "hlsl.frac");
|
|
}
|
|
case Builtin::BI__builtin_hlsl_elementwise_isinf: {
|
|
Value *Op0 = EmitScalarExpr(E->getArg(0));
|
|
llvm::Type *Xty = Op0->getType();
|
|
llvm::Type *retType = llvm::Type::getInt1Ty(this->getLLVMContext());
|
|
if (Xty->isVectorTy()) {
|
|
auto *XVecTy = E->getArg(0)->getType()->castAs<VectorType>();
|
|
retType = llvm::VectorType::get(
|
|
retType, ElementCount::getFixed(XVecTy->getNumElements()));
|
|
}
|
|
if (!E->getArg(0)->getType()->hasFloatingRepresentation())
|
|
llvm_unreachable("isinf operand must have a float representation");
|
|
return Builder.CreateIntrinsic(retType, Intrinsic::dx_isinf,
|
|
ArrayRef<Value *>{Op0}, nullptr, "dx.isinf");
|
|
}
|
|
case Builtin::BI__builtin_hlsl_mad: {
|
|
Value *M = EmitScalarExpr(E->getArg(0));
|
|
Value *A = EmitScalarExpr(E->getArg(1));
|
|
Value *B = EmitScalarExpr(E->getArg(2));
|
|
if (E->getArg(0)->getType()->hasFloatingRepresentation())
|
|
return Builder.CreateIntrinsic(
|
|
/*ReturnType*/ M->getType(), Intrinsic::fmuladd,
|
|
ArrayRef<Value *>{M, A, B}, nullptr, "hlsl.fmad");
|
|
|
|
if (E->getArg(0)->getType()->hasSignedIntegerRepresentation()) {
|
|
if (CGM.getTarget().getTriple().getArch() == llvm::Triple::dxil)
|
|
return Builder.CreateIntrinsic(
|
|
/*ReturnType*/ M->getType(), Intrinsic::dx_imad,
|
|
ArrayRef<Value *>{M, A, B}, nullptr, "dx.imad");
|
|
|
|
Value *Mul = Builder.CreateNSWMul(M, A);
|
|
return Builder.CreateNSWAdd(Mul, B);
|
|
}
|
|
assert(E->getArg(0)->getType()->hasUnsignedIntegerRepresentation());
|
|
if (CGM.getTarget().getTriple().getArch() == llvm::Triple::dxil)
|
|
return Builder.CreateIntrinsic(
|
|
/*ReturnType=*/M->getType(), Intrinsic::dx_umad,
|
|
ArrayRef<Value *>{M, A, B}, nullptr, "dx.umad");
|
|
|
|
Value *Mul = Builder.CreateNUWMul(M, A);
|
|
return Builder.CreateNUWAdd(Mul, B);
|
|
}
|
|
case Builtin::BI__builtin_hlsl_elementwise_rcp: {
|
|
Value *Op0 = EmitScalarExpr(E->getArg(0));
|
|
if (!E->getArg(0)->getType()->hasFloatingRepresentation())
|
|
llvm_unreachable("rcp operand must have a float representation");
|
|
llvm::Type *Ty = Op0->getType();
|
|
llvm::Type *EltTy = Ty->getScalarType();
|
|
Constant *One = Ty->isVectorTy()
|
|
? ConstantVector::getSplat(
|
|
ElementCount::getFixed(
|
|
cast<FixedVectorType>(Ty)->getNumElements()),
|
|
ConstantFP::get(EltTy, 1.0))
|
|
: ConstantFP::get(EltTy, 1.0);
|
|
return Builder.CreateFDiv(One, Op0, "hlsl.rcp");
|
|
}
|
|
case Builtin::BI__builtin_hlsl_elementwise_rsqrt: {
|
|
Value *Op0 = EmitScalarExpr(E->getArg(0));
|
|
if (!E->getArg(0)->getType()->hasFloatingRepresentation())
|
|
llvm_unreachable("rsqrt operand must have a float representation");
|
|
return Builder.CreateIntrinsic(
|
|
/*ReturnType=*/Op0->getType(), CGM.getHLSLRuntime().getRsqrtIntrinsic(),
|
|
ArrayRef<Value *>{Op0}, nullptr, "hlsl.rsqrt");
|
|
}
|
|
case Builtin::BI__builtin_hlsl_elementwise_saturate: {
|
|
Value *Op0 = EmitScalarExpr(E->getArg(0));
|
|
assert(E->getArg(0)->getType()->hasFloatingRepresentation() &&
|
|
"saturate operand must have a float representation");
|
|
return Builder.CreateIntrinsic(
|
|
/*ReturnType=*/Op0->getType(),
|
|
CGM.getHLSLRuntime().getSaturateIntrinsic(), ArrayRef<Value *>{Op0},
|
|
nullptr, "hlsl.saturate");
|
|
}
|
|
case Builtin::BI__builtin_hlsl_select: {
|
|
Value *OpCond = EmitScalarExpr(E->getArg(0));
|
|
RValue RValTrue = EmitAnyExpr(E->getArg(1));
|
|
Value *OpTrue =
|
|
RValTrue.isScalar()
|
|
? RValTrue.getScalarVal()
|
|
: RValTrue.getAggregatePointer(E->getArg(1)->getType(), *this);
|
|
RValue RValFalse = EmitAnyExpr(E->getArg(2));
|
|
Value *OpFalse =
|
|
RValFalse.isScalar()
|
|
? RValFalse.getScalarVal()
|
|
: RValFalse.getAggregatePointer(E->getArg(2)->getType(), *this);
|
|
if (auto *VTy = E->getType()->getAs<VectorType>()) {
|
|
if (!OpTrue->getType()->isVectorTy())
|
|
OpTrue =
|
|
Builder.CreateVectorSplat(VTy->getNumElements(), OpTrue, "splat");
|
|
if (!OpFalse->getType()->isVectorTy())
|
|
OpFalse =
|
|
Builder.CreateVectorSplat(VTy->getNumElements(), OpFalse, "splat");
|
|
}
|
|
|
|
Value *SelectVal =
|
|
Builder.CreateSelect(OpCond, OpTrue, OpFalse, "hlsl.select");
|
|
if (!RValTrue.isScalar())
|
|
Builder.CreateStore(SelectVal, ReturnValue.getAddress(),
|
|
ReturnValue.isVolatile());
|
|
|
|
return SelectVal;
|
|
}
|
|
case Builtin::BI__builtin_hlsl_step: {
|
|
Value *Op0 = EmitScalarExpr(E->getArg(0));
|
|
Value *Op1 = EmitScalarExpr(E->getArg(1));
|
|
assert(E->getArg(0)->getType()->hasFloatingRepresentation() &&
|
|
E->getArg(1)->getType()->hasFloatingRepresentation() &&
|
|
"step operands must have a float representation");
|
|
return Builder.CreateIntrinsic(
|
|
/*ReturnType=*/Op0->getType(), CGM.getHLSLRuntime().getStepIntrinsic(),
|
|
ArrayRef<Value *>{Op0, Op1}, nullptr, "hlsl.step");
|
|
}
|
|
case Builtin::BI__builtin_hlsl_wave_active_all_true: {
|
|
Value *Op = EmitScalarExpr(E->getArg(0));
|
|
assert(Op->getType()->isIntegerTy(1) &&
|
|
"Intrinsic WaveActiveAllTrue operand must be a bool");
|
|
|
|
Intrinsic::ID ID = CGM.getHLSLRuntime().getWaveActiveAllTrueIntrinsic();
|
|
return EmitRuntimeCall(
|
|
Intrinsic::getOrInsertDeclaration(&CGM.getModule(), ID), {Op});
|
|
}
|
|
case Builtin::BI__builtin_hlsl_wave_active_any_true: {
|
|
Value *Op = EmitScalarExpr(E->getArg(0));
|
|
assert(Op->getType()->isIntegerTy(1) &&
|
|
"Intrinsic WaveActiveAnyTrue operand must be a bool");
|
|
|
|
Intrinsic::ID ID = CGM.getHLSLRuntime().getWaveActiveAnyTrueIntrinsic();
|
|
return EmitRuntimeCall(
|
|
Intrinsic::getOrInsertDeclaration(&CGM.getModule(), ID), {Op});
|
|
}
|
|
case Builtin::BI__builtin_hlsl_wave_active_count_bits: {
|
|
Value *OpExpr = EmitScalarExpr(E->getArg(0));
|
|
Intrinsic::ID ID = CGM.getHLSLRuntime().getWaveActiveCountBitsIntrinsic();
|
|
return EmitRuntimeCall(
|
|
Intrinsic::getOrInsertDeclaration(&CGM.getModule(), ID),
|
|
ArrayRef{OpExpr});
|
|
}
|
|
case Builtin::BI__builtin_hlsl_wave_active_sum: {
|
|
// Due to the use of variadic arguments, explicitly retreive argument
|
|
Value *OpExpr = EmitScalarExpr(E->getArg(0));
|
|
llvm::FunctionType *FT = llvm::FunctionType::get(
|
|
OpExpr->getType(), ArrayRef{OpExpr->getType()}, false);
|
|
Intrinsic::ID IID = getWaveActiveSumIntrinsic(
|
|
getTarget().getTriple().getArch(), CGM.getHLSLRuntime(),
|
|
E->getArg(0)->getType());
|
|
|
|
// Get overloaded name
|
|
std::string Name =
|
|
Intrinsic::getName(IID, ArrayRef{OpExpr->getType()}, &CGM.getModule());
|
|
return EmitRuntimeCall(CGM.CreateRuntimeFunction(FT, Name, {},
|
|
/*Local=*/false,
|
|
/*AssumeConvergent=*/true),
|
|
ArrayRef{OpExpr}, "hlsl.wave.active.sum");
|
|
}
|
|
case Builtin::BI__builtin_hlsl_wave_active_max: {
|
|
// Due to the use of variadic arguments, explicitly retreive argument
|
|
Value *OpExpr = EmitScalarExpr(E->getArg(0));
|
|
llvm::FunctionType *FT = llvm::FunctionType::get(
|
|
OpExpr->getType(), ArrayRef{OpExpr->getType()}, false);
|
|
Intrinsic::ID IID = getWaveActiveMaxIntrinsic(
|
|
getTarget().getTriple().getArch(), CGM.getHLSLRuntime(),
|
|
E->getArg(0)->getType());
|
|
|
|
// Get overloaded name
|
|
std::string Name =
|
|
Intrinsic::getName(IID, ArrayRef{OpExpr->getType()}, &CGM.getModule());
|
|
return EmitRuntimeCall(CGM.CreateRuntimeFunction(FT, Name, {},
|
|
/*Local=*/false,
|
|
/*AssumeConvergent=*/true),
|
|
ArrayRef{OpExpr}, "hlsl.wave.active.max");
|
|
}
|
|
case Builtin::BI__builtin_hlsl_wave_get_lane_index: {
|
|
// We don't define a SPIR-V intrinsic, instead it is a SPIR-V built-in
|
|
// defined in SPIRVBuiltins.td. So instead we manually get the matching name
|
|
// for the DirectX intrinsic and the demangled builtin name
|
|
switch (CGM.getTarget().getTriple().getArch()) {
|
|
case llvm::Triple::dxil:
|
|
return EmitRuntimeCall(Intrinsic::getOrInsertDeclaration(
|
|
&CGM.getModule(), Intrinsic::dx_wave_getlaneindex));
|
|
case llvm::Triple::spirv:
|
|
return EmitRuntimeCall(CGM.CreateRuntimeFunction(
|
|
llvm::FunctionType::get(IntTy, {}, false),
|
|
"__hlsl_wave_get_lane_index", {}, false, true));
|
|
default:
|
|
llvm_unreachable(
|
|
"Intrinsic WaveGetLaneIndex not supported by target architecture");
|
|
}
|
|
}
|
|
case Builtin::BI__builtin_hlsl_wave_is_first_lane: {
|
|
Intrinsic::ID ID = CGM.getHLSLRuntime().getWaveIsFirstLaneIntrinsic();
|
|
return EmitRuntimeCall(
|
|
Intrinsic::getOrInsertDeclaration(&CGM.getModule(), ID));
|
|
}
|
|
case Builtin::BI__builtin_hlsl_wave_get_lane_count: {
|
|
Intrinsic::ID ID = CGM.getHLSLRuntime().getWaveGetLaneCountIntrinsic();
|
|
return EmitRuntimeCall(
|
|
Intrinsic::getOrInsertDeclaration(&CGM.getModule(), ID));
|
|
}
|
|
case Builtin::BI__builtin_hlsl_wave_read_lane_at: {
|
|
// Due to the use of variadic arguments we must explicitly retreive them and
|
|
// create our function type.
|
|
Value *OpExpr = EmitScalarExpr(E->getArg(0));
|
|
Value *OpIndex = EmitScalarExpr(E->getArg(1));
|
|
llvm::FunctionType *FT = llvm::FunctionType::get(
|
|
OpExpr->getType(), ArrayRef{OpExpr->getType(), OpIndex->getType()},
|
|
false);
|
|
|
|
// Get overloaded name
|
|
std::string Name =
|
|
Intrinsic::getName(CGM.getHLSLRuntime().getWaveReadLaneAtIntrinsic(),
|
|
ArrayRef{OpExpr->getType()}, &CGM.getModule());
|
|
return EmitRuntimeCall(CGM.CreateRuntimeFunction(FT, Name, {},
|
|
/*Local=*/false,
|
|
/*AssumeConvergent=*/true),
|
|
ArrayRef{OpExpr, OpIndex}, "hlsl.wave.readlane");
|
|
}
|
|
case Builtin::BI__builtin_hlsl_elementwise_sign: {
|
|
auto *Arg0 = E->getArg(0);
|
|
Value *Op0 = EmitScalarExpr(Arg0);
|
|
llvm::Type *Xty = Op0->getType();
|
|
llvm::Type *retType = llvm::Type::getInt32Ty(this->getLLVMContext());
|
|
if (Xty->isVectorTy()) {
|
|
auto *XVecTy = Arg0->getType()->castAs<VectorType>();
|
|
retType = llvm::VectorType::get(
|
|
retType, ElementCount::getFixed(XVecTy->getNumElements()));
|
|
}
|
|
assert((Arg0->getType()->hasFloatingRepresentation() ||
|
|
Arg0->getType()->hasIntegerRepresentation()) &&
|
|
"sign operand must have a float or int representation");
|
|
|
|
if (Arg0->getType()->hasUnsignedIntegerRepresentation()) {
|
|
Value *Cmp = Builder.CreateICmpEQ(Op0, ConstantInt::get(Xty, 0));
|
|
return Builder.CreateSelect(Cmp, ConstantInt::get(retType, 0),
|
|
ConstantInt::get(retType, 1), "hlsl.sign");
|
|
}
|
|
|
|
return Builder.CreateIntrinsic(
|
|
retType, CGM.getHLSLRuntime().getSignIntrinsic(),
|
|
ArrayRef<Value *>{Op0}, nullptr, "hlsl.sign");
|
|
}
|
|
case Builtin::BI__builtin_hlsl_elementwise_radians: {
|
|
Value *Op0 = EmitScalarExpr(E->getArg(0));
|
|
assert(E->getArg(0)->getType()->hasFloatingRepresentation() &&
|
|
"radians operand must have a float representation");
|
|
return Builder.CreateIntrinsic(
|
|
/*ReturnType=*/Op0->getType(),
|
|
CGM.getHLSLRuntime().getRadiansIntrinsic(), ArrayRef<Value *>{Op0},
|
|
nullptr, "hlsl.radians");
|
|
}
|
|
case Builtin::BI__builtin_hlsl_buffer_update_counter: {
|
|
Value *ResHandle = EmitScalarExpr(E->getArg(0));
|
|
Value *Offset = EmitScalarExpr(E->getArg(1));
|
|
Value *OffsetI8 = Builder.CreateIntCast(Offset, Int8Ty, true);
|
|
return Builder.CreateIntrinsic(
|
|
/*ReturnType=*/Offset->getType(),
|
|
CGM.getHLSLRuntime().getBufferUpdateCounterIntrinsic(),
|
|
ArrayRef<Value *>{ResHandle, OffsetI8}, nullptr);
|
|
}
|
|
case Builtin::BI__builtin_hlsl_elementwise_splitdouble: {
|
|
|
|
assert((E->getArg(0)->getType()->hasFloatingRepresentation() &&
|
|
E->getArg(1)->getType()->hasUnsignedIntegerRepresentation() &&
|
|
E->getArg(2)->getType()->hasUnsignedIntegerRepresentation()) &&
|
|
"asuint operands types mismatch");
|
|
return handleHlslSplitdouble(E, this);
|
|
}
|
|
case Builtin::BI__builtin_hlsl_elementwise_clip:
|
|
assert(E->getArg(0)->getType()->hasFloatingRepresentation() &&
|
|
"clip operands types mismatch");
|
|
return handleHlslClip(E, this);
|
|
case Builtin::BI__builtin_hlsl_group_memory_barrier_with_group_sync: {
|
|
Intrinsic::ID ID =
|
|
CGM.getHLSLRuntime().getGroupMemoryBarrierWithGroupSyncIntrinsic();
|
|
return EmitRuntimeCall(
|
|
Intrinsic::getOrInsertDeclaration(&CGM.getModule(), ID));
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|