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//===-- SPIRVISelLowering.h - SPIR-V DAG Lowering Interface -----*- C++ -*-===//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// This file defines the interfaces that SPIR-V uses to lower LLVM code into a
// selection DAG.
#include "llvm/CodeGen/TargetLowering.h"
namespace llvm {
class SPIRVSubtarget;
class SPIRVTargetLowering : public TargetLowering {
explicit SPIRVTargetLowering(const TargetMachine &TM,
const SPIRVSubtarget &STI)
: TargetLowering(TM) {}
// Stop IRTranslator breaking up FMA instrs to preserve types information.
bool isFMAFasterThanFMulAndFAdd(const MachineFunction &MF,
EVT) const override {
return true;
// This is to prevent sexts of non-i64 vector indices which are generated
// within general IRTranslator hence type generation for it is omitted.
MVT getVectorIdxTy(const DataLayout &DL) const override {
return MVT::getIntegerVT(32);
unsigned getNumRegistersForCallingConv(LLVMContext &Context,
CallingConv::ID CC,
EVT VT) const override;
MVT getRegisterTypeForCallingConv(LLVMContext &Context, CallingConv::ID CC,
EVT VT) const override;
bool getTgtMemIntrinsic(IntrinsicInfo &Info, const CallInst &I,
MachineFunction &MF,
unsigned Intrinsic) const override;
} // namespace llvm