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//===--- SPIRVInlineAsmLowering.cpp - Inline Asm lowering -------*- 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 implements the lowering of LLVM inline asm calls to machine code
// calls for GlobalISel.
//
//===----------------------------------------------------------------------===//
#include "SPIRVInlineAsmLowering.h"
#include "SPIRVSubtarget.h"
#include "llvm/IR/IntrinsicInst.h"
#include "llvm/IR/IntrinsicsSPIRV.h"
using namespace llvm;
SPIRVInlineAsmLowering::SPIRVInlineAsmLowering(const SPIRVTargetLowering &TLI)
: InlineAsmLowering(&TLI) {}
bool SPIRVInlineAsmLowering::lowerAsmOperandForConstraint(
Value *Val, StringRef Constraint, std::vector<MachineOperand> &Ops,
MachineIRBuilder &MIRBuilder) const {
Value *ValOp = nullptr;
if (isa<ConstantInt>(Val)) {
ValOp = Val;
} else if (ConstantFP *CFP = dyn_cast<ConstantFP>(Val)) {
Ops.push_back(MachineOperand::CreateFPImm(CFP));
return true;
} else if (auto *II = dyn_cast<IntrinsicInst>(Val)) {
if (II->getIntrinsicID() == Intrinsic::spv_track_constant) {
if (isa<ConstantInt>(II->getOperand(0))) {
ValOp = II->getOperand(0);
} else if (ConstantFP *CFP = dyn_cast<ConstantFP>(II->getOperand(0))) {
Ops.push_back(MachineOperand::CreateFPImm(CFP));
return true;
}
}
}
return ValOp ? InlineAsmLowering::lowerAsmOperandForConstraint(
ValOp, Constraint, Ops, MIRBuilder)
: false;
}
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