1 //===-- XtensaRegisterInfo.h - Xtensa 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 Xtensa implementation of the TargetRegisterInfo class. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #ifndef LLVM_LIB_TARGET_XTENSA_XTENSAREGISTERINFO_H 14 #define LLVM_LIB_TARGET_XTENSA_XTENSAREGISTERINFO_H 15 16 #include "Xtensa.h" 17 #include "llvm/CodeGen/TargetRegisterInfo.h" 18 19 #define GET_REGINFO_HEADER 20 #include "XtensaGenRegisterInfo.inc" 21 22 namespace llvm { 23 class TargetRegisterClass; 24 class XtensaInstrInfo; 25 class XtensaSubtarget; 26 27 class XtensaRegisterInfo : public XtensaGenRegisterInfo { 28 public: 29 const XtensaSubtarget &Subtarget; 30 31 XtensaRegisterInfo(const XtensaSubtarget &STI); 32 33 bool requiresRegisterScavenging(const MachineFunction &MF) const override { 34 return true; 35 } 36 37 bool requiresFrameIndexScavenging(const MachineFunction &MF) const override { 38 return true; 39 } 40 41 bool trackLivenessAfterRegAlloc(const MachineFunction &) const override { 42 return true; 43 } 44 45 const uint16_t * 46 getCalleeSavedRegs(const MachineFunction *MF = 0) const override; 47 const uint32_t *getCallPreservedMask(const MachineFunction &MF, 48 CallingConv::ID) const override; 49 BitVector getReservedRegs(const MachineFunction &MF) const override; 50 51 bool eliminateFrameIndex(MachineBasicBlock::iterator MI, int SPAdj, 52 unsigned FIOperandNum, 53 RegScavenger *RS = nullptr) const override; 54 55 Register getFrameRegister(const MachineFunction &MF) const override; 56 }; 57 58 } // end namespace llvm 59 60 #endif // LLVM_LIB_TARGET_XTENSA_REGISTERINFO_H 61