1//===- llvm/lib/Target/X86/X86CallLowering.h - Call lowering ----*- C++ -*-===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8// 9/// \file 10/// This file describes how to lower LLVM calls to machine code calls. 11// 12//===----------------------------------------------------------------------===// 13 14#ifndef LLVM_LIB_TARGET_X86_X86CALLLOWERING_H 15#define LLVM_LIB_TARGET_X86_X86CALLLOWERING_H 16 17#include "llvm/CodeGen/GlobalISel/CallLowering.h" 18#include <functional> 19 20namespace llvm { 21 22template <typename T> class ArrayRef; 23class DataLayout; 24class MachineRegisterInfo; 25class X86TargetLowering; 26 27class X86CallLowering : public CallLowering { 28public: 29 X86CallLowering(const X86TargetLowering &TLI); 30 31 bool lowerReturn(MachineIRBuilder &MIRBuilder, const Value *Val, 32 ArrayRef<Register> VRegs) const override; 33 34 bool lowerFormalArguments(MachineIRBuilder &MIRBuilder, const Function &F, 35 ArrayRef<ArrayRef<Register>> VRegs) const override; 36 37 bool lowerCall(MachineIRBuilder &MIRBuilder, 38 CallLoweringInfo &Info) const override; 39 40private: 41 /// A function of this type is used to perform value split action. 42 using SplitArgTy = std::function<void(ArrayRef<Register>)>; 43 44 bool splitToValueTypes(const ArgInfo &OrigArgInfo, 45 SmallVectorImpl<ArgInfo> &SplitArgs, 46 const DataLayout &DL, MachineRegisterInfo &MRI, 47 SplitArgTy SplitArg) const; 48}; 49 50} // end namespace llvm 51 52#endif // LLVM_LIB_TARGET_X86_X86CALLLOWERING_H 53