1 //===- BlackfinRegisterInfo.h - Blackfin Register Information ..-*- 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 Blackfin implementation of the TargetRegisterInfo
13 //===----------------------------------------------------------------------===//
15 #ifndef BLACKFINREGISTERINFO_H
16 #define BLACKFINREGISTERINFO_H
18 #include "llvm/Target/TargetRegisterInfo.h"
19 #include "BlackfinGenRegisterInfo.h.inc"
23 class BlackfinSubtarget;
24 class TargetInstrInfo;
27 struct BlackfinRegisterInfo : public BlackfinGenRegisterInfo {
28 BlackfinSubtarget &Subtarget;
29 const TargetInstrInfo &TII;
31 BlackfinRegisterInfo(BlackfinSubtarget &st, const TargetInstrInfo &tii);
33 /// Code Generation virtual methods...
34 const unsigned *getCalleeSavedRegs(const MachineFunction *MF = 0) const;
36 BitVector getReservedRegs(const MachineFunction &MF) const;
38 // getSubReg implemented by tablegen
40 const TargetRegisterClass *getPointerRegClass(unsigned Kind = 0) const {
41 return &BF::PRegClass;
44 // bool hasReservedCallFrame(MachineFunction &MF) const;
46 bool requiresRegisterScavenging(const MachineFunction &MF) const;
48 void eliminateCallFramePseudoInstr(MachineFunction &MF,
49 MachineBasicBlock &MBB,
50 MachineBasicBlock::iterator I) const;
52 void eliminateFrameIndex(MachineBasicBlock::iterator II,
53 int SPAdj, RegScavenger *RS = NULL) const;
55 unsigned getFrameRegister(const MachineFunction &MF) const;
56 unsigned getRARegister() const;
58 // Exception handling queries.
59 unsigned getEHExceptionRegister() const;
60 unsigned getEHHandlerRegister() const;
62 int getDwarfRegNum(unsigned RegNum, bool isEH) const;
65 void adjustRegister(MachineBasicBlock &MBB,
66 MachineBasicBlock::iterator I,
71 void loadConstant(MachineBasicBlock &MBB,
72 MachineBasicBlock::iterator I,
78 } // end namespace llvm