| //===-- MipsRegisterInfo.h - Mips Register Information Impl -----*- C++ -*-===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file contains the Mips implementation of the TargetRegisterInfo class. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_LIB_TARGET_MIPS_MIPSREGISTERINFO_H |
| #define LLVM_LIB_TARGET_MIPS_MIPSREGISTERINFO_H |
| |
| #include "Mips.h" |
| #include "llvm/Target/TargetRegisterInfo.h" |
| |
| #define GET_REGINFO_HEADER |
| #include "MipsGenRegisterInfo.inc" |
| |
| namespace llvm { |
| class MipsRegisterInfo : public MipsGenRegisterInfo { |
| public: |
| MipsRegisterInfo(); |
| |
| /// getRegisterNumbering - Given the enum value for some register, e.g. |
| /// Mips::RA, return the number that it corresponds to (e.g. 31). |
| static unsigned getRegisterNumbering(unsigned RegEnum); |
| |
| /// Get PIC indirect call register |
| static unsigned getPICCallReg(); |
| |
| /// Adjust the Mips stack frame. |
| void adjustMipsStackFrame(MachineFunction &MF) const; |
| |
| /// Code Generation virtual methods... |
| const TargetRegisterClass *getPointerRegClass(const MachineFunction &MF, |
| unsigned Kind) const override; |
| |
| unsigned getRegPressureLimit(const TargetRegisterClass *RC, |
| MachineFunction &MF) const override; |
| const MCPhysReg *getCalleeSavedRegs(const MachineFunction *MF) const override; |
| const uint32_t *getCallPreservedMask(const MachineFunction &MF, |
| CallingConv::ID) const override; |
| static const uint32_t *getMips16RetHelperMask(); |
| |
| BitVector getReservedRegs(const MachineFunction &MF) const override; |
| |
| bool requiresRegisterScavenging(const MachineFunction &MF) const override; |
| |
| bool trackLivenessAfterRegAlloc(const MachineFunction &MF) const override; |
| |
| /// Stack Frame Processing Methods |
| void eliminateFrameIndex(MachineBasicBlock::iterator II, |
| int SPAdj, unsigned FIOperandNum, |
| RegScavenger *RS = nullptr) const override; |
| |
| void processFunctionBeforeFrameFinalized(MachineFunction &MF, |
| RegScavenger *RS = nullptr) const; |
| |
| // Stack realignment queries. |
| bool canRealignStack(const MachineFunction &MF) const override; |
| |
| /// Debug information queries. |
| unsigned getFrameRegister(const MachineFunction &MF) const override; |
| |
| /// \brief Return GPR register class. |
| virtual const TargetRegisterClass *intRegClass(unsigned Size) const = 0; |
| |
| private: |
| virtual void eliminateFI(MachineBasicBlock::iterator II, unsigned OpNo, |
| int FrameIndex, uint64_t StackSize, |
| int64_t SPOffset) const = 0; |
| }; |
| |
| } // end namespace llvm |
| |
| #endif |