1 //===- XCoreRegisterInfo.h - XCore Register Information Impl ----*- 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 XCore implementation of the MRegisterInfo class. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef XCOREREGISTERINFO_H 15 #define XCOREREGISTERINFO_H 16 17 #include "llvm/Target/TargetRegisterInfo.h" 18 19 #define GET_REGINFO_HEADER 20 #include "XCoreGenRegisterInfo.inc" 21 22 namespace llvm { 23 24 class TargetInstrInfo; 25 26 struct XCoreRegisterInfo : public XCoreGenRegisterInfo { 27 private: 28 const TargetInstrInfo &TII; 29 30 void loadConstant(MachineBasicBlock &MBB, 31 MachineBasicBlock::iterator I, 32 unsigned DstReg, int64_t Value, DebugLoc dl) const; 33 34 void storeToStack(MachineBasicBlock &MBB, 35 MachineBasicBlock::iterator I, 36 unsigned SrcReg, int Offset, DebugLoc dl) const; 37 38 void loadFromStack(MachineBasicBlock &MBB, 39 MachineBasicBlock::iterator I, 40 unsigned DstReg, int Offset, DebugLoc dl) const; 41 42 public: 43 XCoreRegisterInfo(const TargetInstrInfo &tii); 44 45 /// Code Generation virtual methods... 46 47 const unsigned *getCalleeSavedRegs(const MachineFunction *MF = 0) const; 48 49 BitVector getReservedRegs(const MachineFunction &MF) const; 50 51 bool requiresRegisterScavenging(const MachineFunction &MF) const; 52 53 bool useFPForScavengingIndex(const MachineFunction &MF) const; 54 55 void eliminateCallFramePseudoInstr(MachineFunction &MF, 56 MachineBasicBlock &MBB, 57 MachineBasicBlock::iterator I) const; 58 59 void eliminateFrameIndex(MachineBasicBlock::iterator II, 60 int SPAdj, RegScavenger *RS = NULL) const; 61 62 // Debug information queries. 63 unsigned getFrameRegister(const MachineFunction &MF) const; 64 65 //! Return the array of argument passing registers 66 /*! 67 \note The size of this array is returned by getArgRegsSize(). 68 */ 69 static const unsigned *getArgRegs(const MachineFunction *MF = 0); 70 71 //! Return the size of the argument passing register array 72 static unsigned getNumArgRegs(const MachineFunction *MF = 0); 73 74 //! Return whether to emit frame moves 75 static bool needsFrameMoves(const MachineFunction &MF); 76 }; 77 78 } // end namespace llvm 79 80 #endif 81
