1 //===- AArch64CallLowering.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_AARCH64_AARCH64CALLLOWERING_H 16 #define LLVM_LIB_TARGET_AARCH64_AARCH64CALLLOWERING_H 17 18 #include "llvm/ADT/ArrayRef.h" 19 #include "llvm/CodeGen/GlobalISel/CallLowering.h" 20 #include "llvm/IR/CallingConv.h" 21 #include <cstdint> 22 #include <functional> 23 24 namespace llvm { 25 26 class AArch64TargetLowering; 27 class CCValAssign; 28 class DataLayout; 29 class MachineIRBuilder; 30 class MachineRegisterInfo; 31 class Type; 32 33 class AArch64CallLowering: public CallLowering { 34 public: 35 AArch64CallLowering(const AArch64TargetLowering &TLI); 36 37 bool lowerReturn(MachineIRBuilder &MIRBuiler, const Value *Val, 38 unsigned VReg) const override; 39 40 bool lowerFormalArguments(MachineIRBuilder &MIRBuilder, const Function &F, 41 ArrayRef<unsigned> VRegs) const override; 42 43 bool lowerCall(MachineIRBuilder &MIRBuilder, CallingConv::ID CallConv, 44 const MachineOperand &Callee, const ArgInfo &OrigRet, 45 ArrayRef<ArgInfo> OrigArgs) const override; 46 47 private: 48 using RegHandler = std::function<void(MachineIRBuilder &, Type *, unsigned, 49 CCValAssign &)>; 50 51 using MemHandler = 52 std::function<void(MachineIRBuilder &, int, CCValAssign &)>; 53 54 using SplitArgTy = std::function<void(unsigned, uint64_t)>; 55 56 void splitToValueTypes(const ArgInfo &OrigArgInfo, 57 SmallVectorImpl<ArgInfo> &SplitArgs, 58 const DataLayout &DL, MachineRegisterInfo &MRI, 59 CallingConv::ID CallConv, 60 const SplitArgTy &SplitArg) const; 61 }; 62 63 } // end namespace llvm 64 65 #endif // LLVM_LIB_TARGET_AARCH64_AARCH64CALLLOWERING_H 66
