mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-23 16:30:00 +00:00
c3cee57f7d
We used to generate the compact unwind encoding from the machine instructions. However, this had the problem that if the user used `-save-temps' or compiled their hand-written `.s' file (with CFI directives), we wouldn't generate the compact unwind encoding. Move the algorithm that generates the compact unwind encoding into the MCAsmBackend. This way we can generate the encoding whether the code is from a `.ll' or `.s' file. <rdar://problem/13623355> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190290 91177308-0d34-0410-b5e6-96231b3b80d8
77 lines
2.7 KiB
C++
77 lines
2.7 KiB
C++
//===-- X86TargetFrameLowering.h - Define frame lowering for X86 -*- C++ -*-==//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This class implements X86-specific bits of TargetFrameLowering class.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef X86_FRAMELOWERING_H
|
|
#define X86_FRAMELOWERING_H
|
|
|
|
#include "X86Subtarget.h"
|
|
#include "llvm/MC/MCDwarf.h"
|
|
#include "llvm/Target/TargetFrameLowering.h"
|
|
|
|
namespace llvm {
|
|
|
|
class MCSymbol;
|
|
class X86TargetMachine;
|
|
|
|
class X86FrameLowering : public TargetFrameLowering {
|
|
const X86TargetMachine &TM;
|
|
const X86Subtarget &STI;
|
|
public:
|
|
explicit X86FrameLowering(const X86TargetMachine &tm, const X86Subtarget &sti)
|
|
: TargetFrameLowering(StackGrowsDown,
|
|
sti.getStackAlignment(),
|
|
(sti.is64Bit() ? -8 : -4)),
|
|
TM(tm), STI(sti) {
|
|
}
|
|
|
|
void emitCalleeSavedFrameMoves(MachineFunction &MF, MCSymbol *Label,
|
|
unsigned FramePtr) const;
|
|
|
|
/// emitProlog/emitEpilog - These methods insert prolog and epilog code into
|
|
/// the function.
|
|
void emitPrologue(MachineFunction &MF) const;
|
|
void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
|
|
|
|
void adjustForSegmentedStacks(MachineFunction &MF) const;
|
|
|
|
void adjustForHiPEPrologue(MachineFunction &MF) const;
|
|
|
|
void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
|
|
RegScavenger *RS = NULL) const;
|
|
|
|
bool spillCalleeSavedRegisters(MachineBasicBlock &MBB,
|
|
MachineBasicBlock::iterator MI,
|
|
const std::vector<CalleeSavedInfo> &CSI,
|
|
const TargetRegisterInfo *TRI) const;
|
|
|
|
bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB,
|
|
MachineBasicBlock::iterator MI,
|
|
const std::vector<CalleeSavedInfo> &CSI,
|
|
const TargetRegisterInfo *TRI) const;
|
|
|
|
bool hasFP(const MachineFunction &MF) const;
|
|
bool hasReservedCallFrame(const MachineFunction &MF) const;
|
|
|
|
int getFrameIndexOffset(const MachineFunction &MF, int FI) const;
|
|
int getFrameIndexReference(const MachineFunction &MF, int FI,
|
|
unsigned &FrameReg) const;
|
|
|
|
void eliminateCallFramePseudoInstr(MachineFunction &MF,
|
|
MachineBasicBlock &MBB,
|
|
MachineBasicBlock::iterator MI) const;
|
|
};
|
|
|
|
} // End llvm namespace
|
|
|
|
#endif
|