llvm/lib/Target/LoongArch/LoongArchRegisterInfo.h

   1 //= LoongArchRegisterInfo.h - LoongArch Register Information Impl -*- C++ -*-=//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // This file contains the LoongArch implementation of the TargetRegisterInfo
  10 // class.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef LLVM_LIB_TARGET_LOONGARCH_LOONGARCHREGISTERINFO_H
  15 #define LLVM_LIB_TARGET_LOONGARCH_LOONGARCHREGISTERINFO_H
  16
  17 #include "llvm/CodeGen/TargetRegisterInfo.h"
  18
  19 #define GET_REGINFO_HEADER
  20 #include "LoongArchGenRegisterInfo.inc"
  21
  22 namespace llvm {
  23
  24 struct LoongArchRegisterInfo : public LoongArchGenRegisterInfo {
  25
  26   LoongArchRegisterInfo(unsigned HwMode);
  27
  28   const MCPhysReg *getCalleeSavedRegs(const MachineFunction *MF) const override;
  29   const uint32_t *getCallPreservedMask(const MachineFunction &MF,
  30                                        CallingConv::ID) const override;
  31   const uint32_t *getNoPreservedMask() const override;
  32
  33   BitVector getReservedRegs(const MachineFunction &MF) const override;
  34
  35   const TargetRegisterClass *
  36   getPointerRegClass(const MachineFunction &MF,
  37                      unsigned Kind = 0) const override {
  38     return &LoongArch::GPRRegClass;
  39   }
  40
  41   bool eliminateFrameIndex(MachineBasicBlock::iterator MI, int SPAdj,
  42                            unsigned FIOperandNum,
  43                            RegScavenger *RS = nullptr) const override;
  44
  45   Register getFrameRegister(const MachineFunction &MF) const override;
  46
  47   bool requiresRegisterScavenging(const MachineFunction &MF) const override {
  48     return true;
  49   }
  50
  51   bool requiresFrameIndexScavenging(const MachineFunction &MF) const override {
  52     return true;
  53   }
  54   bool canRealignStack(const MachineFunction &MF) const override;
  55 };
  56 } // end namespace llvm
  57
  58 #endif // LLVM_LIB_TARGET_LOONGARCH_LOONGARCHREGISTERINFO_H