X86MachineFunctionInfo.h revision f22f9b35d6e6444028ed288bfae526f53740b5c1
1e8bd0a332ab43c30a7745381075a9749070b6a50Evan Cheng//====- X86MachineFuctionInfo.h - X86 machine function info -----*- C++ -*-===// 2e8bd0a332ab43c30a7745381075a9749070b6a50Evan Cheng// 3e8bd0a332ab43c30a7745381075a9749070b6a50Evan Cheng// The LLVM Compiler Infrastructure 4e8bd0a332ab43c30a7745381075a9749070b6a50Evan Cheng// 54ee451de366474b9c228b4e5fa573795a715216dChris Lattner// This file is distributed under the University of Illinois Open Source 64ee451de366474b9c228b4e5fa573795a715216dChris Lattner// License. See LICENSE.TXT for details. 7e8bd0a332ab43c30a7745381075a9749070b6a50Evan Cheng// 8e8bd0a332ab43c30a7745381075a9749070b6a50Evan Cheng//===----------------------------------------------------------------------===// 9e8bd0a332ab43c30a7745381075a9749070b6a50Evan Cheng// 10e8bd0a332ab43c30a7745381075a9749070b6a50Evan Cheng// This file declares X86-specific per-machine-function information. 11e8bd0a332ab43c30a7745381075a9749070b6a50Evan Cheng// 12e8bd0a332ab43c30a7745381075a9749070b6a50Evan Cheng//===----------------------------------------------------------------------===// 13e8bd0a332ab43c30a7745381075a9749070b6a50Evan Cheng 14e8bd0a332ab43c30a7745381075a9749070b6a50Evan Cheng#ifndef X86MACHINEFUNCTIONINFO_H 15e8bd0a332ab43c30a7745381075a9749070b6a50Evan Cheng#define X86MACHINEFUNCTIONINFO_H 16e8bd0a332ab43c30a7745381075a9749070b6a50Evan Cheng 17e8bd0a332ab43c30a7745381075a9749070b6a50Evan Cheng#include "llvm/CodeGen/MachineFunction.h" 18e8bd0a332ab43c30a7745381075a9749070b6a50Evan Cheng 19e8bd0a332ab43c30a7745381075a9749070b6a50Evan Chengnamespace llvm { 20e8bd0a332ab43c30a7745381075a9749070b6a50Evan Cheng 21f824868ed9d2cc756a797f6dbd67732f75e31cd6Anton Korobeynikovenum NameDecorationStyle { 22f824868ed9d2cc756a797f6dbd67732f75e31cd6Anton Korobeynikov None, 23f824868ed9d2cc756a797f6dbd67732f75e31cd6Anton Korobeynikov StdCall, 24f824868ed9d2cc756a797f6dbd67732f75e31cd6Anton Korobeynikov FastCall 25f824868ed9d2cc756a797f6dbd67732f75e31cd6Anton Korobeynikov}; 26f824868ed9d2cc756a797f6dbd67732f75e31cd6Anton Korobeynikov 276288b93f00e8747eaff69f2954a76efc587e7b55Dan Gohman/// X86MachineFunctionInfo - This class is derived from MachineFunction and 286288b93f00e8747eaff69f2954a76efc587e7b55Dan Gohman/// contains private X86 target-specific information for each MachineFunction. 29d15dff24c6a3712298e16453eb8d09c4404563a5Chris Lattnerclass X86MachineFunctionInfo : public MachineFunctionInfo { 30f824868ed9d2cc756a797f6dbd67732f75e31cd6Anton Korobeynikov /// ForceFramePointer - True if the function is required to use of frame 31f824868ed9d2cc756a797f6dbd67732f75e31cd6Anton Korobeynikov /// pointer for reasons other than it containing dynamic allocation or 32f824868ed9d2cc756a797f6dbd67732f75e31cd6Anton Korobeynikov /// that FP eliminatation is turned off. For example, Cygwin main function 33f824868ed9d2cc756a797f6dbd67732f75e31cd6Anton Korobeynikov /// contains stack pointer re-alignment code which requires FP. 34e5e228df19d6e9e1218fecfb49f8ef1f53d6759cEvan Cheng bool ForceFramePointer; 35f824868ed9d2cc756a797f6dbd67732f75e31cd6Anton Korobeynikov 3689d1659cf2db49162742ea3a261832b70e2897f9Evan Cheng /// CalleeSavedFrameSize - Size of the callee-saved register portion of the 3789d1659cf2db49162742ea3a261832b70e2897f9Evan Cheng /// stack frame in bytes. 3889d1659cf2db49162742ea3a261832b70e2897f9Evan Cheng unsigned CalleeSavedFrameSize; 3989d1659cf2db49162742ea3a261832b70e2897f9Evan Cheng 400475ab58b8e92fa8e8b90ddbf023bc60587c5e25Evan Cheng /// BytesToPopOnReturn - Number of bytes function pops on return. 41f824868ed9d2cc756a797f6dbd67732f75e31cd6Anton Korobeynikov /// Used on windows platform for stdcall & fastcall name decoration 42f824868ed9d2cc756a797f6dbd67732f75e31cd6Anton Korobeynikov unsigned BytesToPopOnReturn; 43f824868ed9d2cc756a797f6dbd67732f75e31cd6Anton Korobeynikov 440475ab58b8e92fa8e8b90ddbf023bc60587c5e25Evan Cheng /// DecorationStyle - If the function requires additional name decoration, 450475ab58b8e92fa8e8b90ddbf023bc60587c5e25Evan Cheng /// DecorationStyle holds the right way to do so. 46f824868ed9d2cc756a797f6dbd67732f75e31cd6Anton Korobeynikov NameDecorationStyle DecorationStyle; 47a2780e11ef0b757f0e5851bcf76c28c2f07dd379Anton Korobeynikov 480475ab58b8e92fa8e8b90ddbf023bc60587c5e25Evan Cheng /// ReturnAddrIndex - FrameIndex for return slot. 49a2780e11ef0b757f0e5851bcf76c28c2f07dd379Anton Korobeynikov int ReturnAddrIndex; 50c85e1716f0e45e4c18a9ef2fbe431a51ac3a4252Arnold Schwaighofer 51f22f9b35d6e6444028ed288bfae526f53740b5c1Evan Cheng /// TailCallReturnAddrDelta - The number of bytes by which return address 52f22f9b35d6e6444028ed288bfae526f53740b5c1Evan Cheng /// stack slot is moved as the result of tail call optimization. 53c85e1716f0e45e4c18a9ef2fbe431a51ac3a4252Arnold Schwaighofer int TailCallReturnAddrDelta; 54c85e1716f0e45e4c18a9ef2fbe431a51ac3a4252Arnold Schwaighofer 5561a921344090457f9429e44c7906ea75ce97e020Dan Gohman /// SRetReturnReg - Some subtargets require that sret lowering includes 5661a921344090457f9429e44c7906ea75ce97e020Dan Gohman /// returning the value of the returned struct in a register. This field 5761a921344090457f9429e44c7906ea75ce97e020Dan Gohman /// holds the virtual register into which the sret argument is passed. 5861a921344090457f9429e44c7906ea75ce97e020Dan Gohman unsigned SRetReturnReg; 5961a921344090457f9429e44c7906ea75ce97e020Dan Gohman 60d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman /// GlobalBaseReg - keeps track of the virtual register initialized for 61d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman /// use as the global base register. This is used for PIC in some PIC 62d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman /// relocation models. 6357c3dac0df7ac1b53ae7c0e5d2adc459fc7bd37cDan Gohman unsigned GlobalBaseReg; 6457c3dac0df7ac1b53ae7c0e5d2adc459fc7bd37cDan Gohman 65e8bd0a332ab43c30a7745381075a9749070b6a50Evan Chengpublic: 66d15dff24c6a3712298e16453eb8d09c4404563a5Chris Lattner X86MachineFunctionInfo() : ForceFramePointer(false), 6789d1659cf2db49162742ea3a261832b70e2897f9Evan Cheng CalleeSavedFrameSize(0), 68d15dff24c6a3712298e16453eb8d09c4404563a5Chris Lattner BytesToPopOnReturn(0), 69a2780e11ef0b757f0e5851bcf76c28c2f07dd379Anton Korobeynikov DecorationStyle(None), 70c85e1716f0e45e4c18a9ef2fbe431a51ac3a4252Arnold Schwaighofer ReturnAddrIndex(0), 7161a921344090457f9429e44c7906ea75ce97e020Dan Gohman TailCallReturnAddrDelta(0), 7257c3dac0df7ac1b53ae7c0e5d2adc459fc7bd37cDan Gohman SRetReturnReg(0), 7357c3dac0df7ac1b53ae7c0e5d2adc459fc7bd37cDan Gohman GlobalBaseReg(0) {} 74f824868ed9d2cc756a797f6dbd67732f75e31cd6Anton Korobeynikov 752392efef1bd2599231ab659dd6ba4233bf5df94cDan Gohman explicit X86MachineFunctionInfo(MachineFunction &MF) 762392efef1bd2599231ab659dd6ba4233bf5df94cDan Gohman : ForceFramePointer(false), 772392efef1bd2599231ab659dd6ba4233bf5df94cDan Gohman CalleeSavedFrameSize(0), 782392efef1bd2599231ab659dd6ba4233bf5df94cDan Gohman BytesToPopOnReturn(0), 792392efef1bd2599231ab659dd6ba4233bf5df94cDan Gohman DecorationStyle(None), 802392efef1bd2599231ab659dd6ba4233bf5df94cDan Gohman ReturnAddrIndex(0), 812392efef1bd2599231ab659dd6ba4233bf5df94cDan Gohman TailCallReturnAddrDelta(0), 822392efef1bd2599231ab659dd6ba4233bf5df94cDan Gohman SRetReturnReg(0), 832392efef1bd2599231ab659dd6ba4233bf5df94cDan Gohman GlobalBaseReg(0) {} 84f824868ed9d2cc756a797f6dbd67732f75e31cd6Anton Korobeynikov 85e8bd0a332ab43c30a7745381075a9749070b6a50Evan Cheng bool getForceFramePointer() const { return ForceFramePointer;} 86e8bd0a332ab43c30a7745381075a9749070b6a50Evan Cheng void setForceFramePointer(bool forceFP) { ForceFramePointer = forceFP; } 87f824868ed9d2cc756a797f6dbd67732f75e31cd6Anton Korobeynikov 8889d1659cf2db49162742ea3a261832b70e2897f9Evan Cheng unsigned getCalleeSavedFrameSize() const { return CalleeSavedFrameSize; } 8989d1659cf2db49162742ea3a261832b70e2897f9Evan Cheng void setCalleeSavedFrameSize(unsigned bytes) { CalleeSavedFrameSize = bytes; } 9089d1659cf2db49162742ea3a261832b70e2897f9Evan Cheng 91f824868ed9d2cc756a797f6dbd67732f75e31cd6Anton Korobeynikov unsigned getBytesToPopOnReturn() const { return BytesToPopOnReturn; } 92f824868ed9d2cc756a797f6dbd67732f75e31cd6Anton Korobeynikov void setBytesToPopOnReturn (unsigned bytes) { BytesToPopOnReturn = bytes;} 93f824868ed9d2cc756a797f6dbd67732f75e31cd6Anton Korobeynikov 94f824868ed9d2cc756a797f6dbd67732f75e31cd6Anton Korobeynikov NameDecorationStyle getDecorationStyle() const { return DecorationStyle; } 95f824868ed9d2cc756a797f6dbd67732f75e31cd6Anton Korobeynikov void setDecorationStyle(NameDecorationStyle style) { DecorationStyle = style;} 96a2780e11ef0b757f0e5851bcf76c28c2f07dd379Anton Korobeynikov 97a2780e11ef0b757f0e5851bcf76c28c2f07dd379Anton Korobeynikov int getRAIndex() const { return ReturnAddrIndex; } 98a2780e11ef0b757f0e5851bcf76c28c2f07dd379Anton Korobeynikov void setRAIndex(int Index) { ReturnAddrIndex = Index; } 99c85e1716f0e45e4c18a9ef2fbe431a51ac3a4252Arnold Schwaighofer 100c85e1716f0e45e4c18a9ef2fbe431a51ac3a4252Arnold Schwaighofer int getTCReturnAddrDelta() const { return TailCallReturnAddrDelta; } 101c85e1716f0e45e4c18a9ef2fbe431a51ac3a4252Arnold Schwaighofer void setTCReturnAddrDelta(int delta) {TailCallReturnAddrDelta = delta;} 10261a921344090457f9429e44c7906ea75ce97e020Dan Gohman 10361a921344090457f9429e44c7906ea75ce97e020Dan Gohman unsigned getSRetReturnReg() const { return SRetReturnReg; } 10461a921344090457f9429e44c7906ea75ce97e020Dan Gohman void setSRetReturnReg(unsigned Reg) { SRetReturnReg = Reg; } 10557c3dac0df7ac1b53ae7c0e5d2adc459fc7bd37cDan Gohman 10657c3dac0df7ac1b53ae7c0e5d2adc459fc7bd37cDan Gohman unsigned getGlobalBaseReg() const { return GlobalBaseReg; } 10757c3dac0df7ac1b53ae7c0e5d2adc459fc7bd37cDan Gohman void setGlobalBaseReg(unsigned Reg) { GlobalBaseReg = Reg; } 108e8bd0a332ab43c30a7745381075a9749070b6a50Evan Cheng}; 1096288b93f00e8747eaff69f2954a76efc587e7b55Dan Gohman 110e8bd0a332ab43c30a7745381075a9749070b6a50Evan Cheng} // End llvm namespace 111e8bd0a332ab43c30a7745381075a9749070b6a50Evan Cheng 112e8bd0a332ab43c30a7745381075a9749070b6a50Evan Cheng#endif 113