1 //===-- RISCVCallLowering.h - Call lowering ---------------------*- 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_RISCV_RISCVCALLLOWERING_H
15 #define LLVM_LIB_TARGET_RISCV_RISCVCALLLOWERING_H
16 
17 #include "llvm/CodeGen/CallingConvLower.h"
18 #include "llvm/CodeGen/GlobalISel/CallLowering.h"
19 
20 namespace llvm {
21 
22 class MachineInstrBuilder;
23 class MachineIRBuilder;
24 class RISCVTargetLowering;
25 
26 class RISCVCallLowering : public CallLowering {
27 
28 public:
29   RISCVCallLowering(const RISCVTargetLowering &TLI);
30 
31   bool lowerReturn(MachineIRBuilder &MIRBuiler, const Value *Val,
32                    ArrayRef<Register> VRegs,
33                    FunctionLoweringInfo &FLI) const override;
34 
35   bool lowerFormalArguments(MachineIRBuilder &MIRBuilder, const Function &F,
36                             ArrayRef<ArrayRef<Register>> VRegs,
37                             FunctionLoweringInfo &FLI) const override;
38 
39   bool lowerCall(MachineIRBuilder &MIRBuilder,
40                  CallLoweringInfo &Info) const override;
41 
42 private:
43   bool lowerReturnVal(MachineIRBuilder &MIRBuilder, const Value *Val,
44                       ArrayRef<Register> VRegs, MachineInstrBuilder &Ret) const;
45 };
46 
47 } // end namespace llvm
48 
49 #endif // LLVM_LIB_TARGET_RISCV_RISCVCALLLOWERING_H
50