1 //===- X86RegisterInfo.h - X86 Register Information Impl --------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file contains the X86 implementation of the MRegisterInfo class.
12 //===----------------------------------------------------------------------===//
14 #ifndef X86REGISTERINFO_H
15 #define X86REGISTERINFO_H
17 #include "llvm/Target/MRegisterInfo.h"
21 #include "X86GenRegisterInfo.h.inc"
25 struct X86RegisterInfo : public X86GenRegisterInfo {
27 const TargetRegisterClass* getRegClassForType(const Type* Ty) const;
29 /// Code Generation virtual methods...
30 int storeRegToStackSlot(MachineBasicBlock &MBB,
31 MachineBasicBlock::iterator MI,
32 unsigned SrcReg, int FrameIndex,
33 const TargetRegisterClass *RC) const;
35 int loadRegFromStackSlot(MachineBasicBlock &MBB,
36 MachineBasicBlock::iterator MI,
37 unsigned DestReg, int FrameIndex,
38 const TargetRegisterClass *RC) const;
40 int copyRegToReg(MachineBasicBlock &MBB,
41 MachineBasicBlock::iterator MI,
42 unsigned DestReg, unsigned SrcReg,
43 const TargetRegisterClass *RC) const;
45 /// foldMemoryOperand - If this target supports it, fold a load or store of
46 /// the specified stack slot into the specified machine instruction for the
47 /// specified operand. If this is possible, the target should perform the
48 /// folding and return true, otherwise it should return false. If it folds
49 /// the instruction, it is likely that the MachineInstruction the iterator
50 /// references has been changed.
51 virtual bool foldMemoryOperand(MachineBasicBlock::iterator &MI,unsigned OpNum,
52 int FrameIndex) const;
55 void eliminateCallFramePseudoInstr(MachineFunction &MF,
56 MachineBasicBlock &MBB,
57 MachineBasicBlock::iterator MI) const;
59 void eliminateFrameIndex(MachineFunction &MF,
60 MachineBasicBlock::iterator MI) const;
62 void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
64 void emitPrologue(MachineFunction &MF) const;
65 void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const;
68 } // End llvm namespace