llvm.org GIT mirror llvm / master lib / Target / X86 / X86CallLowering.h

Tree @master (Download .tar.gz)

X86CallLowering.h @masterraw · history · blame

//===- 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.


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

namespace llvm {

class DataLayout;
class MachineRegisterInfo;
class X86TargetLowering;

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

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

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

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

  /// A function of this type is used to perform value split action.
  using SplitArgTy = std::function<void(ArrayRef<Register>)>;

  bool splitToValueTypes(const ArgInfo &OrigArgInfo,
                         SmallVectorImpl<ArgInfo> &SplitArgs,
                         const DataLayout &DL, MachineRegisterInfo &MRI,
                         SplitArgTy SplitArg) const;

} // end namespace llvm