LLVM API Documentation

Main Page | Namespace List | Class Hierarchy | Alphabetical List | Class List | Directories | File List | Namespace Members | Class Members | File Members | Related Pages

X86RegisterInfo.h

Go to the documentation of this file.
00001 //===- X86RegisterInfo.h - X86 Register Information Impl --------*- C++ -*-===//
00002 // 
00003 //                     The LLVM Compiler Infrastructure
00004 //
00005 // This file was developed by the LLVM research group and is distributed under
00006 // the University of Illinois Open Source License. See LICENSE.TXT for details.
00007 // 
00008 //===----------------------------------------------------------------------===//
00009 //
00010 // This file contains the X86 implementation of the MRegisterInfo class.
00011 //
00012 //===----------------------------------------------------------------------===//
00013 
00014 #ifndef X86REGISTERINFO_H
00015 #define X86REGISTERINFO_H
00016 
00017 #include "llvm/Target/MRegisterInfo.h"
00018 
00019 class llvm::Type;
00020 
00021 #include "X86GenRegisterInfo.h.inc"
00022 
00023 namespace llvm {
00024 
00025 struct X86RegisterInfo : public X86GenRegisterInfo {
00026   X86RegisterInfo();
00027   const TargetRegisterClass* getRegClassForType(const Type* Ty) const;
00028 
00029   /// Code Generation virtual methods...
00030   void storeRegToStackSlot(MachineBasicBlock &MBB,
00031                            MachineBasicBlock::iterator MI,
00032                            unsigned SrcReg, int FrameIndex) const;
00033 
00034   void loadRegFromStackSlot(MachineBasicBlock &MBB,
00035                             MachineBasicBlock::iterator MI,
00036                             unsigned DestReg, int FrameIndex) const;
00037   
00038   void copyRegToReg(MachineBasicBlock &MBB,
00039                     MachineBasicBlock::iterator MI,
00040                     unsigned DestReg, unsigned SrcReg,
00041                     const TargetRegisterClass *RC) const;
00042 
00043   /// foldMemoryOperand - If this target supports it, fold a load or store of
00044   /// the specified stack slot into the specified machine instruction for the
00045   /// specified operand.  If this is possible, the target should perform the
00046   /// folding and return true, otherwise it should return false.  If it folds
00047   /// the instruction, it is likely that the MachineInstruction the iterator
00048   /// references has been changed.
00049   virtual MachineInstr* foldMemoryOperand(MachineInstr* MI,
00050                                           unsigned OpNum,
00051                                           int FrameIndex) const;
00052 
00053 
00054   void eliminateCallFramePseudoInstr(MachineFunction &MF,
00055                                      MachineBasicBlock &MBB,
00056                                      MachineBasicBlock::iterator MI) const;
00057 
00058   void eliminateFrameIndex(MachineBasicBlock::iterator MI) const;
00059 
00060   void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
00061 
00062   void emitPrologue(MachineFunction &MF) const;
00063   void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
00064 };
00065 
00066 } // End llvm namespace
00067 
00068 #endif