mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 20:23:11 +01:00
3786e693af
The liveness-tracking code assumes that the registers that were saved in the function's prolog are live outside of the function. Specifically, that registers that were saved are also live-on-exit from the function. This isn't always the case as illustrated by the LR register on ARM. Differential Revision: https://reviews.llvm.org/D36160 llvm-svn: 310619
48 lines
1.7 KiB
C++
48 lines
1.7 KiB
C++
//===-- Mips16FrameLowering.h - Mips16 frame lowering ----------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
//
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_LIB_TARGET_MIPS_MIPS16FRAMELOWERING_H
|
|
#define LLVM_LIB_TARGET_MIPS_MIPS16FRAMELOWERING_H
|
|
|
|
#include "MipsFrameLowering.h"
|
|
|
|
namespace llvm {
|
|
class Mips16FrameLowering : public MipsFrameLowering {
|
|
public:
|
|
explicit Mips16FrameLowering(const MipsSubtarget &STI);
|
|
|
|
/// emitProlog/emitEpilog - These methods insert prolog and epilog code into
|
|
/// the function.
|
|
void emitPrologue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
|
|
void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const override;
|
|
|
|
bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
|
|
MachineBasicBlock::iterator MI,
|
|
const std::vector<CalleeSavedInfo> &CSI,
|
|
const TargetRegisterInfo *TRI) const override;
|
|
|
|
bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
|
|
MachineBasicBlock::iterator MI,
|
|
std::vector<CalleeSavedInfo> &CSI,
|
|
const TargetRegisterInfo *TRI) const override;
|
|
|
|
bool hasReservedCallFrame(const MachineFunction &MF) const override;
|
|
|
|
void determineCalleeSaves(MachineFunction &MF, BitVector &SavedRegs,
|
|
RegScavenger *RS) const override;
|
|
};
|
|
|
|
} // End llvm namespace
|
|
|
|
#endif
|