1 //===-- MipsRegisterInfo.h - Mips 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 Mips implementation of the TargetRegisterInfo class. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef LLVM_LIB_TARGET_MIPS_MIPSREGISTERINFO_H 15 #define LLVM_LIB_TARGET_MIPS_MIPSREGISTERINFO_H 16 17 #include "Mips.h" 18 #include "llvm/Target/TargetRegisterInfo.h" 19 20 #define GET_REGINFO_HEADER 21 #include "MipsGenRegisterInfo.inc" 22 23 namespace llvm { 24 class MipsRegisterInfo : public MipsGenRegisterInfo { 25 public: 26 MipsRegisterInfo(); 27 28 /// getRegisterNumbering - Given the enum value for some register, e.g. 29 /// Mips::RA, return the number that it corresponds to (e.g. 31). 30 static unsigned getRegisterNumbering(unsigned RegEnum); 31 32 /// Get PIC indirect call register 33 static unsigned getPICCallReg(); 34 35 /// Adjust the Mips stack frame. 36 void adjustMipsStackFrame(MachineFunction &MF) const; 37 38 /// Code Generation virtual methods... 39 const TargetRegisterClass *getPointerRegClass(const MachineFunction &MF, 40 unsigned Kind) const override; 41 42 unsigned getRegPressureLimit(const TargetRegisterClass *RC, 43 MachineFunction &MF) const override; 44 const MCPhysReg *getCalleeSavedRegs(const MachineFunction *MF) const override; 45 const uint32_t *getCallPreservedMask(const MachineFunction &MF, 46 CallingConv::ID) const override; 47 static const uint32_t *getMips16RetHelperMask(); 48 49 BitVector getReservedRegs(const MachineFunction &MF) const override; 50 51 bool requiresRegisterScavenging(const MachineFunction &MF) const override; 52 53 bool trackLivenessAfterRegAlloc(const MachineFunction &MF) const override; 54 55 /// Stack Frame Processing Methods 56 void eliminateFrameIndex(MachineBasicBlock::iterator II, 57 int SPAdj, unsigned FIOperandNum, 58 RegScavenger *RS = nullptr) const override; 59 60 void processFunctionBeforeFrameFinalized(MachineFunction &MF, 61 RegScavenger *RS = nullptr) const; 62 63 // Stack realignment queries. 64 bool canRealignStack(const MachineFunction &MF) const override; 65 66 /// Debug information queries. 67 unsigned getFrameRegister(const MachineFunction &MF) const override; 68 69 /// \brief Return GPR register class. 70 virtual const TargetRegisterClass *intRegClass(unsigned Size) const = 0; 71 72 private: 73 virtual void eliminateFI(MachineBasicBlock::iterator II, unsigned OpNo, 74 int FrameIndex, uint64_t StackSize, 75 int64_t SPOffset) const = 0; 76 }; 77 78 } // end namespace llvm 79 80 #endif 81
