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Diffstat (limited to 'lib/Target/PIC16/PIC16InstrInfo.h')
-rw-r--r-- | lib/Target/PIC16/PIC16InstrInfo.h | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/lib/Target/PIC16/PIC16InstrInfo.h b/lib/Target/PIC16/PIC16InstrInfo.h new file mode 100644 index 0000000..f764668 --- /dev/null +++ b/lib/Target/PIC16/PIC16InstrInfo.h @@ -0,0 +1,78 @@ +//===- PIC16InstrInfo.h - PIC16 Instruction Information----------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the niversity of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file contains the PIC16 implementation of the TargetInstrInfo class. +// +//===----------------------------------------------------------------------===// + +#ifndef PIC16INSTRUCTIONINFO_H +#define PIC16INSTRUCTIONINFO_H + +#include "PIC16.h" +#include "PIC16RegisterInfo.h" +#include "llvm/Target/TargetInstrInfo.h" + +namespace llvm { + + +class PIC16InstrInfo : public TargetInstrInfoImpl +{ + PIC16TargetMachine &TM; + const PIC16RegisterInfo RI; +public: + explicit PIC16InstrInfo(PIC16TargetMachine &TM); + + /// getRegisterInfo - TargetInstrInfo is a superset of MRegister info. As + /// such, whenever a client has an instance of instruction info, it should + /// always be able to get register info as well (through this method). + /// + virtual const TargetRegisterInfo &getRegisterInfo() const { return RI; } + + + /// isLoadFromStackSlot - If the specified machine instruction is a direct + /// load from a stack slot, return the virtual or physical register number of + /// the destination along with the FrameIndex of the loaded stack slot. If + /// not, return 0. This predicate must return 0 if the instruction has + /// any side effects other than loading from the stack slot. + virtual unsigned isLoadFromStackSlot(MachineInstr *MI, int &FrameIndex) const; + + /// isStoreToStackSlot - If the specified machine instruction is a direct + /// store to a stack slot, return the virtual or physical register number of + /// the source reg along with the FrameIndex of the loaded stack slot. If + /// not, return 0. This predicate must return 0 if the instruction has + /// any side effects other than storing to the stack slot. + virtual unsigned isStoreToStackSlot(MachineInstr *MI, int &FrameIndex) const; + + /// Used for spilling a register + void storeRegToStackSlot(MachineBasicBlock &MBB, + MachineBasicBlock::iterator MI, + unsigned SrcReg, bool isKill, int FrameIndex, + const TargetRegisterClass *RC) const; + + + void loadRegFromStackSlot(MachineBasicBlock &MBB, + MachineBasicBlock::iterator MI, + unsigned DestReg, int FrameIndex, + const TargetRegisterClass *RC) const; + + /// InsertBranch - Insert a branch into the end of the specified + /// MachineBasicBlock. This operands to this method are the same as those + /// returned by AnalyzeBranch. This is invoked in cases where AnalyzeBranch + /// returns success and when an unconditional branch (TBB is non-null, FBB is + /// null, Cond is empty) needs to be inserted. It returns the number of + /// instructions inserted. + virtual unsigned InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB, + MachineBasicBlock *FBB, + const std::vector<MachineOperand> &Cond) const ; + +}; + +} // namespace llvm + +#endif |