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-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_POWERPC_GISEL_PPCCALLLOWERING_H
15#define LLVM_LIB_TARGET_POWERPC_GISEL_PPCCALLLOWERING_H
16
17#include "PPCISelLowering.h"
18#include "llvm/CodeGen/GlobalISel/CallLowering.h"
19#include "llvm/IR/CallingConv.h"
20
21namespace llvm {
22
23class PPCTargetLowering;
24
25class PPCCallLowering : public CallLowering {
26public:
27 PPCCallLowering(const PPCTargetLowering &TLI);
28
29 bool lowerReturn(MachineIRBuilder &MIRBuilder, const Value *Val,
30 ArrayRef<Register> VRegs, FunctionLoweringInfo &FLI,
31 Register SwiftErrorVReg) const override;
32 bool lowerFormalArguments(MachineIRBuilder &MIRBuilder, const Function &F,
33 ArrayRef<ArrayRef<Register>> VRegs,
34 FunctionLoweringInfo &FLI) const override;
35 bool lowerCall(MachineIRBuilder &MIRBuilder,
36 CallLoweringInfo &Info) const override;
37};
38
39class PPCIncomingValueHandler : public CallLowering::IncomingValueHandler {
40public:
41 PPCIncomingValueHandler(MachineIRBuilder &MIRBuilder,
42 MachineRegisterInfo &MRI)
43 : CallLowering::IncomingValueHandler(MIRBuilder, MRI) {}
44
45 uint64_t StackUsed;
46
47private:
48 void assignValueToReg(Register ValVReg, Register PhysReg,
49 const CCValAssign &VA) override;
50
51 void assignValueToAddress(Register ValVReg, Register Addr, LLT MemTy,
52 const MachinePointerInfo &MPO,
53 const CCValAssign &VA) override;
54
55 Register getStackAddress(uint64_t Size, int64_t Offset,
56 MachinePointerInfo &MPO,
57 ISD::ArgFlagsTy Flags) override;
58
59 virtual void markPhysRegUsed(unsigned PhysReg) = 0;
60};
61
62class FormalArgHandler : public PPCIncomingValueHandler {
63
64 void markPhysRegUsed(unsigned PhysReg) override;
65
66public:
67 FormalArgHandler(MachineIRBuilder &MIRBuilder, MachineRegisterInfo &MRI)
68 : PPCIncomingValueHandler(MIRBuilder, MRI) {}
69};
70
71} // end namespace llvm
72
73#endif
74