1 //===- Thumb1RegisterInfo.h - Thumb-1 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 Thumb-1 implementation of the TargetRegisterInfo
13 //===----------------------------------------------------------------------===//
15 #ifndef THUMB1REGISTERINFO_H
16 #define THUMB1REGISTERINFO_H
19 #include "ARMRegisterInfo.h"
20 #include "llvm/Target/TargetRegisterInfo.h"
24 class ARMBaseInstrInfo;
27 struct Thumb1RegisterInfo : public ARMBaseRegisterInfo {
29 Thumb1RegisterInfo(const ARMBaseInstrInfo &tii, const ARMSubtarget &STI);
31 const TargetRegisterClass *getPointerRegClass(unsigned Kind = 0) const;
33 /// emitLoadConstPool - Emits a load from constpool to materialize the
34 /// specified immediate.
35 void emitLoadConstPool(MachineBasicBlock &MBB,
36 MachineBasicBlock::iterator &MBBI,
38 unsigned DestReg, unsigned SubIdx, int Val,
39 ARMCC::CondCodes Pred = ARMCC::AL,
41 unsigned MIFlags = MachineInstr::NoFlags) const;
43 /// Code Generation virtual methods...
44 void eliminateCallFramePseudoInstr(MachineFunction &MF,
45 MachineBasicBlock &MBB,
46 MachineBasicBlock::iterator I) const;
48 // rewrite MI to access 'Offset' bytes from the FP. Update Offset to be
49 // however much remains to be handled. Return 'true' if no further
51 bool rewriteFrameIndex(MachineBasicBlock::iterator II, unsigned FrameRegIdx,
52 unsigned FrameReg, int &Offset,
53 const ARMBaseInstrInfo &TII) const;
54 void resolveFrameIndex(MachineBasicBlock::iterator I,
55 unsigned BaseReg, int64_t Offset) const;
56 bool saveScavengerRegister(MachineBasicBlock &MBB,
57 MachineBasicBlock::iterator I,
58 MachineBasicBlock::iterator &UseMI,
59 const TargetRegisterClass *RC,
61 void eliminateFrameIndex(MachineBasicBlock::iterator II,
62 int SPAdj, RegScavenger *RS = NULL) const;
66 #endif // THUMB1REGISTERINFO_H