| //===- lib/Target/AMDGPU/AMDGPUCallLowering.h - Call lowering -*- C++ -*---===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| /// |
| /// \file |
| /// This file describes how to lower LLVM calls to machine code calls. |
| /// |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_LIB_TARGET_AMDGPU_AMDGPUCALLLOWERING_H |
| #define LLVM_LIB_TARGET_AMDGPU_AMDGPUCALLLOWERING_H |
| |
| #include "llvm/CodeGen/GlobalISel/CallLowering.h" |
| |
| namespace llvm { |
| |
| class AMDGPUTargetLowering; |
| class MachineInstrBuilder; |
| |
| class AMDGPUCallLowering final : public CallLowering { |
| void lowerParameterPtr(Register DstReg, MachineIRBuilder &B, Type *ParamTy, |
| uint64_t Offset) const; |
| |
| void lowerParameter(MachineIRBuilder &B, Type *ParamTy, uint64_t Offset, |
| Align Alignment, Register DstReg) const; |
| |
| bool canLowerReturn(MachineFunction &MF, CallingConv::ID CallConv, |
| SmallVectorImpl<BaseArgInfo> &Outs, |
| bool IsVarArg) const override; |
| |
| bool lowerReturnVal(MachineIRBuilder &B, const Value *Val, |
| ArrayRef<Register> VRegs, MachineInstrBuilder &Ret) const; |
| |
| public: |
| AMDGPUCallLowering(const AMDGPUTargetLowering &TLI); |
| |
| bool lowerReturn(MachineIRBuilder &B, const Value *Val, |
| ArrayRef<Register> VRegs, |
| FunctionLoweringInfo &FLI) const override; |
| |
| bool lowerFormalArgumentsKernel(MachineIRBuilder &B, const Function &F, |
| ArrayRef<ArrayRef<Register>> VRegs) const; |
| |
| bool lowerFormalArguments(MachineIRBuilder &B, const Function &F, |
| ArrayRef<ArrayRef<Register>> VRegs, |
| FunctionLoweringInfo &FLI) const override; |
| |
| bool passSpecialInputs(MachineIRBuilder &MIRBuilder, |
| CCState &CCInfo, |
| SmallVectorImpl<std::pair<MCRegister, Register>> &ArgRegs, |
| CallLoweringInfo &Info) const; |
| |
| bool lowerCall(MachineIRBuilder &MIRBuilder, |
| CallLoweringInfo &Info) const override; |
| |
| static CCAssignFn *CCAssignFnForCall(CallingConv::ID CC, bool IsVarArg); |
| static CCAssignFn *CCAssignFnForReturn(CallingConv::ID CC, bool IsVarArg); |
| }; |
| } // End of namespace llvm; |
| #endif |