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 /// Get PIC indirect call register
46 static unsigned getPICCallReg();
48 /// Code Generation virtual methods...
49 const uint16_t *getCalleeSavedRegs(const MachineFunction* MF = 0) const;
51 BitVector getReservedRegs(const MachineFunction &MF) const;
53 void eliminateCallFramePseudoInstr(MachineFunction &MF,
54 MachineBasicBlock &MBB,
55 MachineBasicBlock::iterator I) const;
57 /// Stack Frame Processing Methods
58 void eliminateFrameIndex(MachineBasicBlock::iterator II,
59 int SPAdj, RegScavenger *RS = NULL) const;
61 void processFunctionBeforeFrameFinalized(MachineFunction &MF) const;
63 /// Debug information queries.
64 unsigned getFrameRegister(const MachineFunction &MF) const;
66 /// Exception handling queries.
67 unsigned getEHExceptionRegister() const;
68 unsigned getEHHandlerRegister() const;
71 } // end namespace llvm