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Simplify interface to remove virtual function references
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5100 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -69,8 +69,6 @@ public:
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}
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unsigned getDataSize() const { return RegSize; }
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//void getAliases(void);
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};
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@ -80,10 +78,19 @@ public:
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/// that we can turn register number into a register descriptor.
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///
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class MRegisterInfo {
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const MRegisterDesc *Desc; // Pointer to the descriptor array
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unsigned NumRegs; // Number of entries in the array
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public:
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typedef const TargetRegisterClass * const * regclass_iterator;
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private:
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const MRegisterDesc *Desc; // Pointer to the descriptor array
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unsigned NumRegs; // Number of entries in the array
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regclass_iterator RegClassBegin, RegClassEnd; // List of regclasses
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const TargetRegisterClass **PhysRegClasses; // Reg class for each register
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protected:
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MRegisterInfo(const MRegisterDesc *D, unsigned NR) : Desc(D), NumRegs(NR) {}
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MRegisterInfo(const MRegisterDesc *D, unsigned NR,
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regclass_iterator RegClassBegin, regclass_iterator RegClassEnd);
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virtual ~MRegisterInfo();
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public:
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enum { // Define some target independant constants
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@ -115,6 +122,15 @@ public:
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///
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const MRegisterDesc &get(unsigned RegNo) const { return operator[](RegNo); }
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/// getRegClass - Return the register class for the specified physical
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/// register.
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///
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const TargetRegisterClass *getRegClass(unsigned RegNo) const {
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assert(RegNo < NumRegs && "Register number out of range!");
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assert(PhysRegClasses[RegNo] && "Register is not in a class!");
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return PhysRegClasses[RegNo];
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}
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/// getAliasSet - Return the set of registers aliased by the specified
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/// register, or a null list of there are none. The list returned is zero
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/// terminated.
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@ -123,6 +139,35 @@ public:
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return get(RegNo).AliasSet;
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}
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virtual unsigned getFramePointer() const = 0;
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virtual unsigned getStackPointer() const = 0;
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virtual const unsigned* getCalleeSaveRegs() const = 0;
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virtual const unsigned* getCallerSaveRegs() const = 0;
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//===--------------------------------------------------------------------===//
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// Register Class Information
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//
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/// Register class iterators
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regclass_iterator regclass_begin() const { return RegClassBegin; }
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regclass_iterator regclass_end() const { return RegClassEnd; }
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unsigned getNumRegClasses() const {
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return regclass_end()-regclass_begin();
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}
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virtual const TargetRegisterClass* getRegClassForType(const Type* Ty) const=0;
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//===--------------------------------------------------------------------===//
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// Interfaces used primarily by the register allocator to move data around
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// between registers, immediates and memory.
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//
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virtual void emitPrologue(MachineFunction &MF, unsigned Bytes) const = 0;
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virtual void emitEpilogue(MachineBasicBlock &MBB, unsigned Bytes) const = 0;
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virtual MachineBasicBlock::iterator
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storeReg2RegOffset(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MBBI,
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@ -144,27 +189,6 @@ public:
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moveImm2Reg(MachineBasicBlock &MBB,
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MachineBasicBlock::iterator MBBI,
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unsigned DestReg, unsigned Imm, unsigned dataSize) const = 0;
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virtual void
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emitPrologue(MachineFunction &MF, unsigned numBytes) const = 0;
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virtual void
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emitEpilogue(MachineBasicBlock &MBB, unsigned numBytes) const = 0;
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virtual const unsigned* getCalleeSaveRegs() const = 0;
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virtual const unsigned* getCallerSaveRegs() const = 0;
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virtual unsigned getFramePointer() const = 0;
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virtual unsigned getStackPointer() const = 0;
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/// Register class iterators
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typedef const TargetRegisterClass * const * const_iterator;
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virtual const_iterator regclass_begin() const = 0;
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virtual const_iterator regclass_end() const = 0;
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virtual unsigned getNumRegClasses() const = 0;
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virtual const TargetRegisterClass* getRegClassForType(const Type* Ty) const=0;
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};
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#endif
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