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//===-- PPCCallLowering.h - Call lowering for GlobalISel -------*- 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_POWERPC_GISEL_PPCCALLLOWERING_H
#define LLVM_LIB_TARGET_POWERPC_GISEL_PPCCALLLOWERING_H
#include "PPCISelLowering.h"
#include "llvm/CodeGen/GlobalISel/CallLowering.h"
#include "llvm/IR/CallingConv.h"
namespace llvm {
class PPCTargetLowering;
class PPCCallLowering : public CallLowering {
public:
PPCCallLowering(const PPCTargetLowering &TLI);
bool lowerReturn(MachineIRBuilder &MIRBuilder, const Value *Val,
ArrayRef<Register> VRegs, FunctionLoweringInfo &FLI,
Register SwiftErrorVReg) const override;
bool lowerFormalArguments(MachineIRBuilder &MIRBuilder, const Function &F,
ArrayRef<ArrayRef<Register>> VRegs,
FunctionLoweringInfo &FLI) const override;
bool lowerCall(MachineIRBuilder &MIRBuilder,
CallLoweringInfo &Info) const override;
};
class PPCIncomingValueHandler : public CallLowering::IncomingValueHandler {
public:
PPCIncomingValueHandler(MachineIRBuilder &MIRBuilder,
MachineRegisterInfo &MRI)
: CallLowering::IncomingValueHandler(MIRBuilder, MRI) {}
uint64_t StackUsed;
private:
void assignValueToReg(Register ValVReg, Register PhysReg,
const CCValAssign &VA) override;
void assignValueToAddress(Register ValVReg, Register Addr, LLT MemTy,
const MachinePointerInfo &MPO,
const CCValAssign &VA) override;
Register getStackAddress(uint64_t Size, int64_t Offset,
MachinePointerInfo &MPO,
ISD::ArgFlagsTy Flags) override;
virtual void markPhysRegUsed(unsigned PhysReg) = 0;
};
class FormalArgHandler : public PPCIncomingValueHandler {
void markPhysRegUsed(unsigned PhysReg) override;
public:
FormalArgHandler(MachineIRBuilder &MIRBuilder, MachineRegisterInfo &MRI)
: PPCIncomingValueHandler(MIRBuilder, MRI) {}
};
} // end namespace llvm
#endif
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