| //===- Thumb1RegisterInfo.h - Thumb-1 Register Information Impl ----*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file contains the Thumb-1 implementation of the TargetRegisterInfo class. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef THUMB1REGISTERINFO_H |
| #define THUMB1REGISTERINFO_H |
| |
| #include "ARM.h" |
| #include "ARMRegisterInfo.h" |
| #include "llvm/Target/TargetRegisterInfo.h" |
| |
| namespace llvm { |
| class ARMSubtarget; |
| class ARMBaseInstrInfo; |
| class Type; |
| |
| struct Thumb1RegisterInfo : public ARMBaseRegisterInfo { |
| public: |
| Thumb1RegisterInfo(const ARMBaseInstrInfo &tii, const ARMSubtarget &STI); |
| |
| /// emitLoadConstPool - Emits a load from constpool to materialize the |
| /// specified immediate. |
| void emitLoadConstPool(MachineBasicBlock &MBB, |
| MachineBasicBlock::iterator &MBBI, |
| DebugLoc dl, |
| unsigned DestReg, unsigned SubIdx, int Val, |
| ARMCC::CondCodes Pred = ARMCC::AL, |
| unsigned PredReg = 0) const; |
| |
| /// Code Generation virtual methods... |
| const TargetRegisterClass * |
| getPhysicalRegisterRegClass(unsigned Reg, EVT VT = MVT::Other) const; |
| |
| bool requiresRegisterScavenging(const MachineFunction &MF) const; |
| |
| bool hasReservedCallFrame(MachineFunction &MF) const; |
| |
| void eliminateCallFramePseudoInstr(MachineFunction &MF, |
| MachineBasicBlock &MBB, |
| MachineBasicBlock::iterator I) const; |
| |
| // rewrite MI to access 'Offset' bytes from the FP. Return the offset that |
| // could not be handled directly in MI. |
| int rewriteFrameIndex(MachineInstr &MI, unsigned FrameRegIdx, |
| unsigned FrameReg, int Offset, |
| unsigned MOVOpc, unsigned ADDriOpc, unsigned SUBriOpc) const; |
| |
| void eliminateFrameIndex(MachineBasicBlock::iterator II, |
| int SPAdj, RegScavenger *RS = NULL) const; |
| |
| void emitPrologue(MachineFunction &MF) const; |
| void emitEpilogue(MachineFunction &MF, MachineBasicBlock &MBB) const; |
| }; |
| } |
| |
| #endif // THUMB1REGISTERINFO_H |