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//===- llvm/CodeGen/GlobalISel/InlineAsmLowering.h --------------*- 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
//
//===----------------------------------------------------------------------===//
///
/// \file
/// This file describes how to lower LLVM inline asm to machine code INLINEASM.
///
//===----------------------------------------------------------------------===//
#ifndef LLVM_CODEGEN_GLOBALISEL_INLINEASMLOWERING_H
#define LLVM_CODEGEN_GLOBALISEL_INLINEASMLOWERING_H
#include "llvm/ADT/ArrayRef.h"
#include <functional>
namespace llvm {
class CallBase;
class MachineIRBuilder;
class MachineOperand;
class Register;
class TargetLowering;
class Value;
class InlineAsmLowering {
const TargetLowering *TLI;
virtual void anchor();
public:
/// Lower the given inline asm call instruction
/// \p GetOrCreateVRegs is a callback to materialize a register for the
/// input and output operands of the inline asm
/// \return True if the lowering succeeds, false otherwise.
bool lowerInlineAsm(MachineIRBuilder &MIRBuilder, const CallBase &CB,
std::function<ArrayRef<Register>(const Value &Val)>
GetOrCreateVRegs) const;
/// Lower the specified operand into the Ops vector.
/// \p Val is the IR input value to be lowered
/// \p Constraint is the user supplied constraint string
/// \p Ops is the vector to be filled with the lowered operands
/// \return True if the lowering succeeds, false otherwise.
virtual bool lowerAsmOperandForConstraint(Value *Val, StringRef Constraint,
std::vector<MachineOperand> &Ops,
MachineIRBuilder &MIRBuilder) const;
protected:
/// Getter for generic TargetLowering class.
const TargetLowering *getTLI() const { return TLI; }
/// Getter for target specific TargetLowering class.
template <class XXXTargetLowering> const XXXTargetLowering *getTLI() const {
return static_cast<const XXXTargetLowering *>(TLI);
}
public:
InlineAsmLowering(const TargetLowering *TLI) : TLI(TLI) {}
virtual ~InlineAsmLowering() = default;
};
} // end namespace llvm
#endif // LLVM_CODEGEN_GLOBALISEL_INLINEASMLOWERING_H
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