1 //===- llvm/lib/Target/X86/X86CallLowering.h - Call lowering ----*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 /// \file 11 /// This file describes how to lower LLVM calls to machine code calls. 12 // 13 //===----------------------------------------------------------------------===// 14 15 #ifndef LLVM_LIB_TARGET_X86_X86CALLLOWERING_H 16 #define LLVM_LIB_TARGET_X86_X86CALLLOWERING_H 17 18 #include "llvm/ADT/ArrayRef.h" 19 #include "llvm/CodeGen/GlobalISel/CallLowering.h" 20 #include <functional> 21 22 namespace llvm { 23 24 class DataLayout; 25 class MachineRegisterInfo; 26 class X86TargetLowering; 27 28 class X86CallLowering : public CallLowering { 29 public: 30 X86CallLowering(const X86TargetLowering &TLI); 31 32 bool lowerReturn(MachineIRBuilder &MIRBuiler, const Value *Val, 33 unsigned VReg) const override; 34 35 bool lowerFormalArguments(MachineIRBuilder &MIRBuilder, const Function &F, 36 ArrayRef<unsigned> VRegs) const override; 37 38 bool lowerCall(MachineIRBuilder &MIRBuilder, CallingConv::ID CallConv, 39 const MachineOperand &Callee, const ArgInfo &OrigRet, 40 ArrayRef<ArgInfo> OrigArgs) const override; 41 42 private: 43 /// A function of this type is used to perform value split action. 44 using SplitArgTy = std::function<void(ArrayRef<unsigned>)>; 45 46 bool splitToValueTypes(const ArgInfo &OrigArgInfo, 47 SmallVectorImpl<ArgInfo> &SplitArgs, 48 const DataLayout &DL, MachineRegisterInfo &MRI, 49 SplitArgTy SplitArg) const; 50 }; 51 52 } // end namespace llvm 53 54 #endif // LLVM_LIB_TARGET_X86_X86CALLLOWERING_H 55
