//===- 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 "ARMBaseRegisterInfo.h" #include "llvm/Target/TargetRegisterInfo.h" namespace llvm { class ARMSubtarget; class ARMBaseInstrInfo; struct Thumb1RegisterInfo : public ARMBaseRegisterInfo { public: Thumb1RegisterInfo(const ARMBaseInstrInfo &tii, const ARMSubtarget &STI); const TargetRegisterClass* getLargestLegalSuperClass(const TargetRegisterClass *RC) const; const TargetRegisterClass* getPointerRegClass(const MachineFunction &MF, unsigned Kind = 0) const; /// 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, unsigned MIFlags = MachineInstr::NoFlags) const; /// Code Generation virtual methods... void eliminateCallFramePseudoInstr(MachineFunction &MF, MachineBasicBlock &MBB, MachineBasicBlock::iterator I) const; // rewrite MI to access 'Offset' bytes from the FP. Update Offset to be // however much remains to be handled. Return 'true' if no further // work is required. bool rewriteFrameIndex(MachineBasicBlock::iterator II, unsigned FrameRegIdx, unsigned FrameReg, int &Offset, const ARMBaseInstrInfo &TII) const; void resolveFrameIndex(MachineBasicBlock::iterator I, unsigned BaseReg, int64_t Offset) const; bool saveScavengerRegister(MachineBasicBlock &MBB, MachineBasicBlock::iterator I, MachineBasicBlock::iterator &UseMI, const TargetRegisterClass *RC, unsigned Reg) const; void eliminateFrameIndex(MachineBasicBlock::iterator II, int SPAdj, RegScavenger *RS = NULL) const; }; } #endif // THUMB1REGISTERINFO_H