xref: /freebsd-src/contrib/llvm-project/llvm/lib/Target/M68k/GISel/M68kCallLowering.h (revision 5f757f3ff9144b609b3c433dfd370cc6bdc191ad)
104eeddc0SDimitry Andric //===-- M68kCallLowering.h - Call lowering ----------------------*- C++ -*-===//
2349cc55cSDimitry Andric //
3349cc55cSDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4349cc55cSDimitry Andric // See https://llvm.org/LICENSE.txt for license information.
5349cc55cSDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6349cc55cSDimitry Andric //
7349cc55cSDimitry Andric //===----------------------------------------------------------------------===//
8349cc55cSDimitry Andric //
9349cc55cSDimitry Andric /// \file
10349cc55cSDimitry Andric /// This file implements the lowering of LLVM calls to machine code calls for
11349cc55cSDimitry Andric /// GlobalISel.
12349cc55cSDimitry Andric //
13349cc55cSDimitry Andric //===----------------------------------------------------------------------===//
14349cc55cSDimitry Andric 
15349cc55cSDimitry Andric #ifndef LLVM_LIB_TARGET_M68K_GLSEL_M68KCALLLOWERING_H
16349cc55cSDimitry Andric #define LLVM_LIB_TARGET_M68K_GLSEL_M68KCALLLOWERING_H
17349cc55cSDimitry Andric 
18349cc55cSDimitry Andric #include "llvm/CodeGen/CallingConvLower.h"
19349cc55cSDimitry Andric #include "llvm/CodeGen/GlobalISel/CallLowering.h"
20349cc55cSDimitry Andric #include "llvm/CodeGen/ValueTypes.h"
21349cc55cSDimitry Andric 
22349cc55cSDimitry Andric namespace llvm {
23349cc55cSDimitry Andric 
24349cc55cSDimitry Andric class M68kTargetLowering;
2581ad6265SDimitry Andric class MachineInstrBuilder;
26349cc55cSDimitry Andric 
27349cc55cSDimitry Andric class M68kCallLowering : public CallLowering {
28349cc55cSDimitry Andric   // TODO: We are only supporting return instruction with no value at this time
29349cc55cSDimitry Andric   // point
30349cc55cSDimitry Andric 
31349cc55cSDimitry Andric public:
32349cc55cSDimitry Andric   M68kCallLowering(const M68kTargetLowering &TLI);
33349cc55cSDimitry Andric 
34349cc55cSDimitry Andric   bool lowerReturn(MachineIRBuilder &MIRBuilder, const Value *Val,
35349cc55cSDimitry Andric                    ArrayRef<Register> VRegs, FunctionLoweringInfo &FLI,
36349cc55cSDimitry Andric                    Register SwiftErrorVReg) const override;
37349cc55cSDimitry Andric 
38349cc55cSDimitry Andric   bool lowerFormalArguments(MachineIRBuilder &MIRBuilder, const Function &F,
39349cc55cSDimitry Andric                             ArrayRef<ArrayRef<Register>> VRegs,
40349cc55cSDimitry Andric                             FunctionLoweringInfo &FLI) const override;
41349cc55cSDimitry Andric 
42349cc55cSDimitry Andric   bool lowerCall(MachineIRBuilder &MIRBuilder,
43349cc55cSDimitry Andric                  CallLoweringInfo &Info) const override;
44349cc55cSDimitry Andric 
45349cc55cSDimitry Andric   bool enableBigEndian() const override;
46349cc55cSDimitry Andric };
47349cc55cSDimitry Andric struct M68kIncomingValueHandler : public CallLowering::IncomingValueHandler {
M68kIncomingValueHandlerM68kIncomingValueHandler48349cc55cSDimitry Andric   M68kIncomingValueHandler(MachineIRBuilder &MIRBuilder,
49349cc55cSDimitry Andric                            MachineRegisterInfo &MRI)
50349cc55cSDimitry Andric       : CallLowering::IncomingValueHandler(MIRBuilder, MRI) {}
51349cc55cSDimitry Andric 
52349cc55cSDimitry Andric   uint64_t StackUsed;
53349cc55cSDimitry Andric 
54349cc55cSDimitry Andric private:
55349cc55cSDimitry Andric   void assignValueToReg(Register ValVReg, Register PhysReg,
56*5f757f3fSDimitry Andric                         const CCValAssign &VA) override;
57349cc55cSDimitry Andric 
58349cc55cSDimitry Andric   void assignValueToAddress(Register ValVReg, Register Addr, LLT MemTy,
59*5f757f3fSDimitry Andric                             const MachinePointerInfo &MPO,
60*5f757f3fSDimitry Andric                             const CCValAssign &VA) override;
61349cc55cSDimitry Andric 
62349cc55cSDimitry Andric   Register getStackAddress(uint64_t Size, int64_t Offset,
63349cc55cSDimitry Andric                            MachinePointerInfo &MPO,
64349cc55cSDimitry Andric                            ISD::ArgFlagsTy Flags) override;
65349cc55cSDimitry Andric };
66349cc55cSDimitry Andric } // end namespace llvm
67349cc55cSDimitry Andric 
68349cc55cSDimitry Andric #endif // LLVM_LIB_TARGET_M68K_GLSEL_M68KCALLLOWERING_H
69