1 //===-- AVRInstrInfo.h - AVR Instruction Information ------------*- 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 AVR implementation of the TargetInstrInfo class. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #ifndef LLVM_AVR_INSTR_INFO_H 14 #define LLVM_AVR_INSTR_INFO_H 15 16 #include "llvm/CodeGen/TargetInstrInfo.h" 17 18 #include "AVRRegisterInfo.h" 19 20 #define GET_INSTRINFO_HEADER 21 #include "AVRGenInstrInfo.inc" 22 #undef GET_INSTRINFO_HEADER 23 24 namespace llvm { 25 26 namespace AVRCC { 27 28 /// AVR specific condition codes. 29 /// These correspond to `AVR_*_COND` in `AVRInstrInfo.td`. 30 /// They must be kept in synch. 31 enum CondCodes { 32 COND_EQ, //!< Equal 33 COND_NE, //!< Not equal 34 COND_GE, //!< Greater than or equal 35 COND_LT, //!< Less than 36 COND_SH, //!< Unsigned same or higher 37 COND_LO, //!< Unsigned lower 38 COND_MI, //!< Minus 39 COND_PL, //!< Plus 40 COND_INVALID 41 }; 42 43 } // end of namespace AVRCC 44 45 namespace AVRII { 46 47 /// Specifies a target operand flag. 48 enum TOF { 49 MO_NO_FLAG, 50 51 /// On a symbol operand, this represents the lo part. 52 MO_LO = (1 << 1), 53 54 /// On a symbol operand, this represents the hi part. 55 MO_HI = (1 << 2), 56 57 /// On a symbol operand, this represents it has to be negated. 58 MO_NEG = (1 << 3) 59 }; 60 61 } // end of namespace AVRII 62 63 /// Utilities related to the AVR instruction set. 64 class AVRInstrInfo : public AVRGenInstrInfo { 65 public: 66 explicit AVRInstrInfo(); 67 68 const AVRRegisterInfo &getRegisterInfo() const { return RI; } 69 const MCInstrDesc &getBrCond(AVRCC::CondCodes CC) const; 70 AVRCC::CondCodes getCondFromBranchOpc(unsigned Opc) const; 71 AVRCC::CondCodes getOppositeCondition(AVRCC::CondCodes CC) const; 72 unsigned getInstSizeInBytes(const MachineInstr &MI) const override; 73 74 void copyPhysReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, 75 const DebugLoc &DL, unsigned DestReg, unsigned SrcReg, 76 bool KillSrc) const override; 77 void storeRegToStackSlot(MachineBasicBlock &MBB, 78 MachineBasicBlock::iterator MI, unsigned SrcReg, 79 bool isKill, int FrameIndex, 80 const TargetRegisterClass *RC, 81 const TargetRegisterInfo *TRI) const override; 82 void loadRegFromStackSlot(MachineBasicBlock &MBB, 83 MachineBasicBlock::iterator MI, unsigned DestReg, 84 int FrameIndex, const TargetRegisterClass *RC, 85 const TargetRegisterInfo *TRI) const override; 86 unsigned isLoadFromStackSlot(const MachineInstr &MI, 87 int &FrameIndex) const override; 88 unsigned isStoreToStackSlot(const MachineInstr &MI, 89 int &FrameIndex) const override; 90 91 // Branch analysis. 92 bool analyzeBranch(MachineBasicBlock &MBB, MachineBasicBlock *&TBB, 93 MachineBasicBlock *&FBB, 94 SmallVectorImpl<MachineOperand> &Cond, 95 bool AllowModify = false) const override; 96 unsigned insertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB, 97 MachineBasicBlock *FBB, ArrayRef<MachineOperand> Cond, 98 const DebugLoc &DL, 99 int *BytesAdded = nullptr) const override; 100 unsigned removeBranch(MachineBasicBlock &MBB, 101 int *BytesRemoved = nullptr) const override; 102 bool 103 reverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const override; 104 105 MachineBasicBlock *getBranchDestBlock(const MachineInstr &MI) const override; 106 107 bool isBranchOffsetInRange(unsigned BranchOpc, 108 int64_t BrOffset) const override; 109 110 unsigned insertIndirectBranch(MachineBasicBlock &MBB, 111 MachineBasicBlock &NewDestBB, 112 const DebugLoc &DL, 113 int64_t BrOffset, 114 RegScavenger *RS) const override; 115 private: 116 const AVRRegisterInfo RI; 117 }; 118 119 } // end namespace llvm 120 121 #endif // LLVM_AVR_INSTR_INFO_H 122