mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-19 19:30:10 +00:00
c85e1716f0
enabled by passing -tailcallopt to llc. The optimization is performed if the following conditions are satisfied: * caller/callee are fastcc * elf/pic is disabled OR elf/pic enabled + callee is in module + callee has visibility protected or hidden git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42870 91177308-0d34-0410-b5e6-96231b3b80d8
92 lines
3.6 KiB
C++
92 lines
3.6 KiB
C++
//====- X86MachineFuctionInfo.h - X86 machine function info -----*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file was developed by the Evan Cheng and is distributed under
|
|
// the University of Illinois Open Source License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file declares X86-specific per-machine-function information.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef X86MACHINEFUNCTIONINFO_H
|
|
#define X86MACHINEFUNCTIONINFO_H
|
|
|
|
#include "llvm/CodeGen/MachineFunction.h"
|
|
|
|
namespace llvm {
|
|
|
|
enum NameDecorationStyle {
|
|
None,
|
|
StdCall,
|
|
FastCall
|
|
};
|
|
|
|
/// X86MachineFunctionInfo - This class is derived from MachineFunction private
|
|
/// X86 target-specific information for each MachineFunction.
|
|
class X86MachineFunctionInfo : public MachineFunctionInfo {
|
|
/// ForceFramePointer - True if the function is required to use of frame
|
|
/// pointer for reasons other than it containing dynamic allocation or
|
|
/// that FP eliminatation is turned off. For example, Cygwin main function
|
|
/// contains stack pointer re-alignment code which requires FP.
|
|
bool ForceFramePointer;
|
|
|
|
/// CalleeSavedFrameSize - Size of the callee-saved register portion of the
|
|
/// stack frame in bytes.
|
|
unsigned CalleeSavedFrameSize;
|
|
|
|
/// BytesToPopOnReturn - amount of bytes function pops on return.
|
|
/// Used on windows platform for stdcall & fastcall name decoration
|
|
unsigned BytesToPopOnReturn;
|
|
|
|
/// If the function requires additional name decoration, DecorationStyle holds
|
|
/// the right way to do so.
|
|
NameDecorationStyle DecorationStyle;
|
|
|
|
// FrameIndex for return slot.
|
|
int ReturnAddrIndex;
|
|
|
|
// Delta the ReturnAddr stack slot is moved
|
|
// Used for creating an area before the register spill area on the stack
|
|
// the returnaddr can be savely move to this area
|
|
int TailCallReturnAddrDelta;
|
|
|
|
public:
|
|
X86MachineFunctionInfo() : ForceFramePointer(false),
|
|
CalleeSavedFrameSize(0),
|
|
BytesToPopOnReturn(0),
|
|
DecorationStyle(None),
|
|
ReturnAddrIndex(0),
|
|
TailCallReturnAddrDelta(0){}
|
|
|
|
X86MachineFunctionInfo(MachineFunction &MF) : ForceFramePointer(false),
|
|
CalleeSavedFrameSize(0),
|
|
BytesToPopOnReturn(0),
|
|
DecorationStyle(None),
|
|
ReturnAddrIndex(0),
|
|
TailCallReturnAddrDelta(0) {}
|
|
|
|
bool getForceFramePointer() const { return ForceFramePointer;}
|
|
void setForceFramePointer(bool forceFP) { ForceFramePointer = forceFP; }
|
|
|
|
unsigned getCalleeSavedFrameSize() const { return CalleeSavedFrameSize; }
|
|
void setCalleeSavedFrameSize(unsigned bytes) { CalleeSavedFrameSize = bytes; }
|
|
|
|
unsigned getBytesToPopOnReturn() const { return BytesToPopOnReturn; }
|
|
void setBytesToPopOnReturn (unsigned bytes) { BytesToPopOnReturn = bytes;}
|
|
|
|
NameDecorationStyle getDecorationStyle() const { return DecorationStyle; }
|
|
void setDecorationStyle(NameDecorationStyle style) { DecorationStyle = style;}
|
|
|
|
int getRAIndex() const { return ReturnAddrIndex; }
|
|
void setRAIndex(int Index) { ReturnAddrIndex = Index; }
|
|
|
|
int getTCReturnAddrDelta() const { return TailCallReturnAddrDelta; }
|
|
void setTCReturnAddrDelta(int delta) {TailCallReturnAddrDelta = delta;}
|
|
};
|
|
} // End llvm namespace
|
|
|
|
#endif
|