1 //===- lib/Target/AMDGPU/AMDGPUCallLowering.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_AMDGPU_AMDGPUCALLLOWERING_H 15 #define LLVM_LIB_TARGET_AMDGPU_AMDGPUCALLLOWERING_H 16 17 #include "AMDGPU.h" 18 #include "llvm/CodeGen/GlobalISel/CallLowering.h" 19 20 namespace llvm { 21 22 class AMDGPUTargetLowering; 23 24 class AMDGPUCallLowering: public CallLowering { 25 Register lowerParameterPtr(MachineIRBuilder &MIRBuilder, Type *ParamTy, 26 uint64_t Offset) const; 27 28 void lowerParameter(MachineIRBuilder &MIRBuilder, Type *ParamTy, 29 uint64_t Offset, unsigned Align, 30 Register DstReg) const; 31 32 public: 33 AMDGPUCallLowering(const AMDGPUTargetLowering &TLI); 34 35 bool lowerReturn(MachineIRBuilder &MIRBuilder, const Value *Val, 36 ArrayRef<Register> VRegs) const override; 37 38 bool lowerFormalArgumentsKernel(MachineIRBuilder &MIRBuilder, 39 const Function &F, 40 ArrayRef<ArrayRef<Register>> VRegs) const; 41 42 bool lowerFormalArguments(MachineIRBuilder &MIRBuilder, const Function &F, 43 ArrayRef<ArrayRef<Register>> VRegs) const override; 44 static CCAssignFn *CCAssignFnForCall(CallingConv::ID CC, bool IsVarArg); 45 static CCAssignFn *CCAssignFnForReturn(CallingConv::ID CC, bool IsVarArg); 46 }; 47 } // End of namespace llvm; 48 #endif 49