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 59