2946cd7010
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
59 lines
2.2 KiB
C++
59 lines
2.2 KiB
C++
//===-- RISCVFrameLowering.h - Define frame lowering for RISCV -*- 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This class implements RISCV-specific bits of TargetFrameLowering class.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_LIB_TARGET_RISCV_RISCVFRAMELOWERING_H
|
|
#define LLVM_LIB_TARGET_RISCV_RISCVFRAMELOWERING_H
|
|
|
|
#include "llvm/CodeGen/TargetFrameLowering.h"
|
|
|
|
namespace llvm {
|
|
class RISCVSubtarget;
|
|
|
|
class RISCVFrameLowering : public TargetFrameLowering {
|
|
public:
|
|
explicit RISCVFrameLowering(const RISCVSubtarget &STI)
|
|
: TargetFrameLowering(StackGrowsDown,
|
|
/*StackAlignment=*/16,
|
|
/*LocalAreaOffset=*/0),
|
|
STI(STI) {}
|
|
|
|
void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
|
|
void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
|
|
|
|
int getFrameIndexReference(const MachineFunction &MF, int FI,
|
|
unsigned &FrameReg) const override;
|
|
|
|
void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs,
|
|
RegScavenger *RS) const override;
|
|
|
|
void processFunctionBeforeFrameFinalized(MachineFunction &MF,
|
|
RegScavenger *RS) const override;
|
|
|
|
bool hasFP(const MachineFunction &MF) const override;
|
|
|
|
bool hasReservedCallFrame(const MachineFunction &MF) const override;
|
|
MachineBasicBlock::iterator
|
|
eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB,
|
|
MachineBasicBlock::iterator MI) const override;
|
|
|
|
protected:
|
|
const RISCVSubtarget &STI;
|
|
|
|
private:
|
|
void determineFrameLayout(MachineFunction &MF) const;
|
|
void adjustReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI,
|
|
const DebugLoc &DL, unsigned DestReg, unsigned SrcReg,
|
|
int64_t Val, MachineInstr::MIFlag Flag) const;
|
|
};
|
|
}
|
|
#endif
|