lib/Target/Sparc/SparcInstrInfo.h

   1 //===- SparcInstrInfo.h - Sparc Instruction Information ---------*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 // This file contains the Sparc implementation of the TargetInstrInfo class.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef SPARCINSTRUCTIONINFO_H
  15 #define SPARCINSTRUCTIONINFO_H
  16
  17 #include "llvm/Target/TargetInstrInfo.h"
  18 #include "SparcRegisterInfo.h"
  19
  20 namespace llvm {
  21
  22 /// SPII - This namespace holds all of the target specific flags that
  23 /// instruction info tracks.
  24 ///
  25 namespace SPII {
  26   enum {
  27     Pseudo = (1<<0),
  28     Load = (1<<1),
  29     Store = (1<<2),
  30     DelaySlot = (1<<3)
  31   };
  32 }
  33
  34 class SparcInstrInfo : public TargetInstrInfoImpl {
  35   const SparcRegisterInfo RI;
  36   const SparcSubtarget& Subtarget;
  37 public:
  38   explicit SparcInstrInfo(SparcSubtarget &ST);
  39
  40   /// getRegisterInfo - TargetInstrInfo is a superset of MRegister info.  As
  41   /// such, whenever a client has an instance of instruction info, it should
  42   /// always be able to get register info as well (through this method).
  43   ///
  44   virtual const SparcRegisterInfo &getRegisterInfo() const { return RI; }
  45
  46   /// isLoadFromStackSlot - If the specified machine instruction is a direct
  47   /// load from a stack slot, return the virtual or physical register number of
  48   /// the destination along with the FrameIndex of the loaded stack slot.  If
  49   /// not, return 0.  This predicate must return 0 if the instruction has
  50   /// any side effects other than loading from the stack slot.
  51   virtual unsigned isLoadFromStackSlot(const MachineInstr *MI,
  52                                        int &FrameIndex) const;
  53
  54   /// isStoreToStackSlot - If the specified machine instruction is a direct
  55   /// store to a stack slot, return the virtual or physical register number of
  56   /// the source reg along with the FrameIndex of the loaded stack slot.  If
  57   /// not, return 0.  This predicate must return 0 if the instruction has
  58   /// any side effects other than storing to the stack slot.
  59   virtual unsigned isStoreToStackSlot(const MachineInstr *MI,
  60                                       int &FrameIndex) const;
  61
  62
  63   virtual bool AnalyzeBranch(MachineBasicBlock &MBB, MachineBasicBlock *&TBB,
  64                              MachineBasicBlock *&FBB,
  65                              SmallVectorImpl<MachineOperand> &Cond,
  66                              bool AllowModify = false) const ;
  67
  68   virtual unsigned RemoveBranch(MachineBasicBlock &MBB) const;
  69
  70   virtual unsigned InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB,
  71                                 MachineBasicBlock *FBB,
  72                                 const SmallVectorImpl<MachineOperand> &Cond,
  73                                 DebugLoc DL) const;
  74
  75   virtual void copyPhysReg(MachineBasicBlock &MBB,
  76                            MachineBasicBlock::iterator I, DebugLoc DL,
  77                            unsigned DestReg, unsigned SrcReg,
  78                            bool KillSrc) const;
  79
  80   virtual void storeRegToStackSlot(MachineBasicBlock &MBB,
  81                                    MachineBasicBlock::iterator MBBI,
  82                                    unsigned SrcReg, bool isKill, int FrameIndex,
  83                                    const TargetRegisterClass *RC,
  84                                    const TargetRegisterInfo *TRI) const;
  85
  86   virtual void loadRegFromStackSlot(MachineBasicBlock &MBB,
  87                                     MachineBasicBlock::iterator MBBI,
  88                                     unsigned DestReg, int FrameIndex,
  89                                     const TargetRegisterClass *RC,
  90                                     const TargetRegisterInfo *TRI) const;
  91
  92   unsigned getGlobalBaseReg(MachineFunction *MF) const;
  93 };
  94
  95 }
  96
  97 #endif