diff options
| -rw-r--r-- | include/llvm/Target/MRegisterInfo.h | 76 |
1 files changed, 50 insertions, 26 deletions
diff --git a/include/llvm/Target/MRegisterInfo.h b/include/llvm/Target/MRegisterInfo.h index 2939b59ca1..f58d6eda72 100644 --- a/include/llvm/Target/MRegisterInfo.h +++ b/include/llvm/Target/MRegisterInfo.h @@ -69,8 +69,6 @@ public: } unsigned getDataSize() const { return RegSize; } - - //void getAliases(void); }; @@ -80,10 +78,19 @@ public: /// that we can turn register number into a register descriptor. /// class MRegisterInfo { - const MRegisterDesc *Desc; // Pointer to the descriptor array - unsigned NumRegs; // Number of entries in the array +public: + typedef const TargetRegisterClass * const * regclass_iterator; +private: + const MRegisterDesc *Desc; // Pointer to the descriptor array + unsigned NumRegs; // Number of entries in the array + + regclass_iterator RegClassBegin, RegClassEnd; // List of regclasses + + const TargetRegisterClass **PhysRegClasses; // Reg class for each register protected: - MRegisterInfo(const MRegisterDesc *D, unsigned NR) : Desc(D), NumRegs(NR) {} + MRegisterInfo(const MRegisterDesc *D, unsigned NR, + regclass_iterator RegClassBegin, regclass_iterator RegClassEnd); + virtual ~MRegisterInfo(); public: enum { // Define some target independant constants @@ -115,6 +122,15 @@ public: /// const MRegisterDesc &get(unsigned RegNo) const { return operator[](RegNo); } + /// getRegClass - Return the register class for the specified physical + /// register. + /// + const TargetRegisterClass *getRegClass(unsigned RegNo) const { + assert(RegNo < NumRegs && "Register number out of range!"); + assert(PhysRegClasses[RegNo] && "Register is not in a class!"); + return PhysRegClasses[RegNo]; + } + /// getAliasSet - Return the set of registers aliased by the specified /// register, or a null list of there are none. The list returned is zero /// terminated. @@ -123,6 +139,35 @@ public: return get(RegNo).AliasSet; } + virtual unsigned getFramePointer() const = 0; + virtual unsigned getStackPointer() const = 0; + + virtual const unsigned* getCalleeSaveRegs() const = 0; + virtual const unsigned* getCallerSaveRegs() const = 0; + + + //===--------------------------------------------------------------------===// + // Register Class Information + // + + /// Register class iterators + regclass_iterator regclass_begin() const { return RegClassBegin; } + regclass_iterator regclass_end() const { return RegClassEnd; } + + unsigned getNumRegClasses() const { + return regclass_end()-regclass_begin(); + } + virtual const TargetRegisterClass* getRegClassForType(const Type* Ty) const=0; + + + //===--------------------------------------------------------------------===// + // Interfaces used primarily by the register allocator to move data around + // between registers, immediates and memory. + // + + virtual void emitPrologue(MachineFunction &MF, unsigned Bytes) const = 0; + virtual void emitEpilogue(MachineBasicBlock &MBB, unsigned Bytes) const = 0; + virtual MachineBasicBlock::iterator storeReg2RegOffset(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI, @@ -144,27 +189,6 @@ public: moveImm2Reg(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI, unsigned DestReg, unsigned Imm, unsigned dataSize) const = 0; - - virtual void - emitPrologue(MachineFunction &MF, unsigned numBytes) const = 0; - - virtual void - emitEpilogue(MachineBasicBlock &MBB, unsigned numBytes) const = 0; - - virtual const unsigned* getCalleeSaveRegs() const = 0; - virtual const unsigned* getCallerSaveRegs() const = 0; - - virtual unsigned getFramePointer() const = 0; - virtual unsigned getStackPointer() const = 0; - - /// Register class iterators - typedef const TargetRegisterClass * const * const_iterator; - - virtual const_iterator regclass_begin() const = 0; - virtual const_iterator regclass_end() const = 0; - - virtual unsigned getNumRegClasses() const = 0; - virtual const TargetRegisterClass* getRegClassForType(const Type* Ty) const=0; }; #endif |