| //===- MipsRegisterInfo.h - Mips Register Information Impl ------*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // 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/CodeGen/MachineBasicBlock.h" |
| #include <cstdint> |
| |
| #define GET_REGINFO_HEADER |
| #include "MipsGenRegisterInfo.inc" |
| |
| namespace llvm { |
| |
| class TargetRegisterClass; |
| |
| class MipsRegisterInfo : public MipsGenRegisterInfo { |
| public: |
| enum class MipsPtrClass { |
| /// The default register class for integer values. |
| Default = 0, |
| /// The subset of registers permitted in certain microMIPS instructions |
| /// such as lw16. |
| GPR16MM = 1, |
| /// The stack pointer only. |
| StackPointer = 2, |
| /// The global pointer only. |
| GlobalPointer = 3, |
| }; |
| |
| MipsRegisterInfo(); |
| |
| /// Get PIC indirect call register |
| static unsigned getPICCallReg(); |
| |
| /// 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; |
| |
| /// Stack Frame Processing Methods |
| void eliminateFrameIndex(MachineBasicBlock::iterator II, |
| int SPAdj, unsigned FIOperandNum, |
| RegScavenger *RS = nullptr) const override; |
| |
| // Stack realignment queries. |
| bool canRealignStack(const MachineFunction &MF) const override; |
| |
| /// Debug information queries. |
| Register getFrameRegister(const MachineFunction &MF) const override; |
| |
| /// 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 // LLVM_LIB_TARGET_MIPS_MIPSREGISTERINFO_H |