mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-11-04 06:09:05 +00:00
57caad7a33
This is just very first approximation how the stuff should be done (e.g. ARM-only for now). More to follow. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127101 91177308-0d34-0410-b5e6-96231b3b80d8
76 lines
2.8 KiB
C++
76 lines
2.8 KiB
C++
//==-- ARMTargetFrameLowering.h - Define frame lowering for ARM --*- C++ -*-==//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
//
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef ARM_FRAMEINFO_H
|
|
#define ARM_FRAMEINFO_H
|
|
|
|
#include "ARM.h"
|
|
#include "ARMSubtarget.h"
|
|
#include "llvm/Target/TargetFrameLowering.h"
|
|
|
|
namespace llvm {
|
|
class ARMSubtarget;
|
|
|
|
class ARMFrameLowering : public TargetFrameLowering {
|
|
protected:
|
|
const ARMSubtarget &STI;
|
|
|
|
public:
|
|
explicit ARMFrameLowering(const ARMSubtarget &sti)
|
|
: TargetFrameLowering(StackGrowsDown, sti.getStackAlignment(), 0, 4),
|
|
STI(sti) {
|
|
}
|
|
|
|
/// emitProlog/emitEpilog - These methods insert prolog and epilog code into
|
|
/// the function.
|
|
void emitPrologue(MachineFunction &MF) const;
|
|
void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) 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;
|
|
bool canSimplifyCallFramePseudos(const MachineFunction &MF) const;
|
|
int getFrameIndexReference(const MachineFunction &MF, int FI,
|
|
unsigned &FrameReg) const;
|
|
int ResolveFrameIndexReference(const MachineFunction &MF, int FI,
|
|
unsigned &FrameReg, int SPAdj) const;
|
|
int getFrameIndexOffset(const MachineFunction &MF, int FI) const;
|
|
|
|
void processFunctionBeforeCalleeSavedScan(MachineFunction &MF,
|
|
RegScavenger *RS) const;
|
|
|
|
private:
|
|
void emitPushInst(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI,
|
|
const std::vector<CalleeSavedInfo> &CSI, unsigned StmOpc,
|
|
unsigned StrOpc, bool NoGap,
|
|
bool(*Func)(unsigned, bool),
|
|
unsigned MIFlags = 0) const;
|
|
void emitPopInst(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI,
|
|
const std::vector<CalleeSavedInfo> &CSI, unsigned LdmOpc,
|
|
unsigned LdrOpc, bool isVarArg, bool NoGap,
|
|
bool(*Func)(unsigned, bool)) const;
|
|
};
|
|
|
|
} // End llvm namespace
|
|
|
|
#endif
|