1 //===- MBlazeRegisterInfo.h - MBlaze Register Information Impl --*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file contains the MBlaze implementation of the TargetRegisterInfo
13 //===----------------------------------------------------------------------===//
15 #ifndef MBLAZEREGISTERINFO_H
16 #define MBLAZEREGISTERINFO_H
19 #include "llvm/Target/TargetRegisterInfo.h"
21 #define GET_REGINFO_HEADER
22 #include "MBlazeGenRegisterInfo.inc"
25 class MBlazeSubtarget;
26 class TargetInstrInfo;
30 /// SubregIndex - The index of various sized subregister classes. Note that
31 /// these indices must be kept in sync with the class indices in the
32 /// MBlazeRegisterInfo.td file.
34 SUBREG_FPEVEN = 1, SUBREG_FPODD = 2
38 struct MBlazeRegisterInfo : public MBlazeGenRegisterInfo {
39 const MBlazeSubtarget &Subtarget;
40 const TargetInstrInfo &TII;
42 MBlazeRegisterInfo(const MBlazeSubtarget &Subtarget,
43 const TargetInstrInfo &tii);
45 static unsigned getRegisterFromNumbering(unsigned RegEnum);
46 static unsigned getSpecialRegisterFromNumbering(unsigned RegEnum);
47 static bool isRegister(unsigned RegEnum);
48 static bool isSpecialRegister(unsigned RegEnum);
50 /// Get PIC indirect call register
51 static unsigned getPICCallReg();
53 /// Code Generation virtual methods...
54 const unsigned *getCalleeSavedRegs(const MachineFunction* MF = 0) const;
56 BitVector getReservedRegs(const MachineFunction &MF) const;
58 void eliminateCallFramePseudoInstr(MachineFunction &MF,
59 MachineBasicBlock &MBB,
60 MachineBasicBlock::iterator I) const;
62 /// Stack Frame Processing Methods
63 void eliminateFrameIndex(MachineBasicBlock::iterator II,
64 int SPAdj, RegScavenger *RS = NULL) const;
66 void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
68 /// Debug information queries.
69 unsigned getFrameRegister(const MachineFunction &MF) const;
71 /// Exception handling queries.
72 unsigned getEHExceptionRegister() const;
73 unsigned getEHHandlerRegister() const;
76 } // end namespace llvm