X86CallLowering.h

//===- llvm/lib/Target/X86/X86CallLowering.h - Call 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
//
//===----------------------------------------------------------------------===//
//
/// \file
/// This file describes how to lower LLVM calls to machine code calls.
//
//===----------------------------------------------------------------------===//

#ifndef LLVM_LIB_TARGET_X86_X86CALLLOWERING_H
#define LLVM_LIB_TARGET_X86_X86CALLLOWERING_H

#include "llvm/CodeGen/GlobalISel/CallLowering.h"
#include <functional>

namespace llvm {

template <typename T> class ArrayRef;
class X86TargetLowering;

class X86CallLowering : public CallLowering {
public:
  X86CallLowering(const X86TargetLowering &TLI);

  bool lowerReturn(MachineIRBuilder &MIRBuilder, const Value *Val,
                   ArrayRef<Register> VRegs,
                   FunctionLoweringInfo &FLI) const override;

  bool lowerFormalArguments(MachineIRBuilder &MIRBuilder, const Function &F,
                            ArrayRef<ArrayRef<Register>> VRegs,
                            FunctionLoweringInfo &FLI) const override;

  bool lowerCall(MachineIRBuilder &MIRBuilder,
                 CallLoweringInfo &Info) const override;

  bool canLowerReturn(MachineFunction &MF, CallingConv::ID CallConv,
                      SmallVectorImpl<BaseArgInfo> &Outs,
                      bool IsVarArg) const override;
};

} // end namespace llvm

#endif // LLVM_LIB_TARGET_X86_X86CALLLOWERING_H