1 //===- lib/Target/AMDGPU/AMDGPUCallLowering.h - Call lowering -*- C++ -*---===//
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
7 //===----------------------------------------------------------------------===//
10 /// This file describes how to lower LLVM calls to machine code calls.
12 //===----------------------------------------------------------------------===//
14 #ifndef LLVM_LIB_TARGET_AMDGPU_AMDGPUCALLLOWERING_H
15 #define LLVM_LIB_TARGET_AMDGPU_AMDGPUCALLLOWERING_H
18 #include "llvm/CodeGen/GlobalISel/CallLowering.h"
22 class AMDGPUTargetLowering;
24 class AMDGPUCallLowering: public CallLowering {
25 Register lowerParameterPtr(MachineIRBuilder &MIRBuilder, Type *ParamTy,
26 uint64_t Offset) const;
28 void lowerParameter(MachineIRBuilder &MIRBuilder, Type *ParamTy,
29 uint64_t Offset, unsigned Align,
30 Register DstReg) const;
33 AMDGPUCallLowering(const AMDGPUTargetLowering &TLI);
35 bool lowerReturn(MachineIRBuilder &MIRBuilder, const Value *Val,
36 ArrayRef<Register> VRegs) const override;
38 bool lowerFormalArgumentsKernel(MachineIRBuilder &MIRBuilder,
40 ArrayRef<ArrayRef<Register>> VRegs) const;
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);
47 } // End of namespace llvm;