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1//===-- PPCCallLowering.h - Call lowering for GlobalISel -------*- 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-exception6//7//===----------------------------------------------------------------------===//8///9/// \file10/// This file describes how to lower LLVM calls to machine code calls.11///12//===----------------------------------------------------------------------===//13 14#ifndef LLVM_LIB_TARGET_POWERPC_GISEL_PPCCALLLOWERING_H15#define LLVM_LIB_TARGET_POWERPC_GISEL_PPCCALLLOWERING_H16 17#include "PPCISelLowering.h"18#include "llvm/CodeGen/GlobalISel/CallLowering.h"19 20namespace llvm {21 22class PPCTargetLowering;23 24class PPCCallLowering : public CallLowering {25public:26 PPCCallLowering(const PPCTargetLowering &TLI);27 28 bool lowerReturn(MachineIRBuilder &MIRBuilder, const Value *Val,29 ArrayRef<Register> VRegs, FunctionLoweringInfo &FLI,30 Register SwiftErrorVReg) const override;31 bool lowerFormalArguments(MachineIRBuilder &MIRBuilder, const Function &F,32 ArrayRef<ArrayRef<Register>> VRegs,33 FunctionLoweringInfo &FLI) const override;34 bool lowerCall(MachineIRBuilder &MIRBuilder,35 CallLoweringInfo &Info) const override;36};37 38class PPCIncomingValueHandler : public CallLowering::IncomingValueHandler {39public:40 PPCIncomingValueHandler(MachineIRBuilder &MIRBuilder,41 MachineRegisterInfo &MRI)42 : CallLowering::IncomingValueHandler(MIRBuilder, MRI) {}43 44 uint64_t StackUsed;45 46private:47 void assignValueToReg(Register ValVReg, Register PhysReg,48 const CCValAssign &VA) override;49 50 void assignValueToAddress(Register ValVReg, Register Addr, LLT MemTy,51 const MachinePointerInfo &MPO,52 const CCValAssign &VA) override;53 54 Register getStackAddress(uint64_t Size, int64_t Offset,55 MachinePointerInfo &MPO,56 ISD::ArgFlagsTy Flags) override;57 58 virtual void markPhysRegUsed(unsigned PhysReg) = 0;59};60 61class FormalArgHandler : public PPCIncomingValueHandler {62 63 void markPhysRegUsed(unsigned PhysReg) override;64 65public:66 FormalArgHandler(MachineIRBuilder &MIRBuilder, MachineRegisterInfo &MRI)67 : PPCIncomingValueHandler(MIRBuilder, MRI) {}68};69 70} // end namespace llvm71 72#endif73