LLVM 19.0.0git
RISCVCallLowering.h
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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
19
20namespace llvm {
21
22class MachineInstrBuilder;
23class MachineIRBuilder;
24class RISCVTargetLowering;
25
27
28public:
30
31 bool lowerReturn(MachineIRBuilder &MIRBuiler, const Value *Val,
33 FunctionLoweringInfo &FLI) const override;
34
35 bool lowerFormalArguments(MachineIRBuilder &MIRBuilder, const Function &F,
37 FunctionLoweringInfo &FLI) const override;
38
39 bool lowerCall(MachineIRBuilder &MIRBuilder,
40 CallLoweringInfo &Info) const override;
41
42private:
43 bool lowerReturnVal(MachineIRBuilder &MIRBuilder, const Value *Val,
44 ArrayRef<Register> VRegs, MachineInstrBuilder &Ret) const;
45
46 void saveVarArgRegisters(MachineIRBuilder &MIRBuilder,
48 IncomingValueAssigner &Assigner,
49 CCState &CCInfo) const;
50};
51
52} // end namespace llvm
53
54#endif // LLVM_LIB_TARGET_RISCV_RISCVCALLLOWERING_H
Analysis containing CSE Info
Definition: CSEInfo.cpp:27
This file describes how to lower LLVM calls to machine code calls.
#define F(x, y, z)
Definition: MD5.cpp:55
ArrayRef - Represent a constant reference to an array (0 or more elements consecutively in memory),...
Definition: ArrayRef.h:41
CCState - This class holds information needed while lowering arguments and return values.
FunctionLoweringInfo - This contains information that is global to a function that is used when lower...
Helper class to build MachineInstr.
bool lowerReturn(MachineIRBuilder &MIRBuiler, const Value *Val, ArrayRef< Register > VRegs, FunctionLoweringInfo &FLI) const override
This hook behaves as the extended lowerReturn function, but for targets that do not support swifterro...
bool lowerCall(MachineIRBuilder &MIRBuilder, CallLoweringInfo &Info) const override
This hook must be implemented to lower the given call instruction, including argument and return valu...
bool lowerFormalArguments(MachineIRBuilder &MIRBuilder, const Function &F, ArrayRef< ArrayRef< Register > > VRegs, FunctionLoweringInfo &FLI) const override
This hook must be implemented to lower the incoming (formal) arguments, described by VRegs,...
LLVM Value Representation.
Definition: Value.h:74
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
Base class for ValueHandlers used for arguments coming into the current function, or for return value...
Definition: CallLowering.h:320