1 //===- HexagonInstrInfo.h - Hexagon Instruction Information -----*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file contains the Hexagon implementation of the TargetInstrInfo class.
12 //===----------------------------------------------------------------------===//
14 #ifndef HexagonINSTRUCTIONINFO_H
15 #define HexagonINSTRUCTIONINFO_H
17 #include "HexagonRegisterInfo.h"
18 #include "MCTargetDesc/HexagonBaseInfo.h"
19 #include "llvm/CodeGen/MachineBranchProbabilityInfo.h"
20 #include "llvm/Target/TargetFrameLowering.h"
21 #include "llvm/Target/TargetInstrInfo.h"
23 #define GET_INSTRINFO_HEADER
24 #include "HexagonGenInstrInfo.inc"
30 class HexagonInstrInfo : public HexagonGenInstrInfo {
31 virtual void anchor();
32 const HexagonRegisterInfo RI;
33 const HexagonSubtarget &Subtarget;
34 typedef unsigned Opcode_t;
37 explicit HexagonInstrInfo(HexagonSubtarget &ST);
39 /// getRegisterInfo - TargetInstrInfo is a superset of MRegister info. As
40 /// such, whenever a client has an instance of instruction info, it should
41 /// always be able to get register info as well (through this method).
43 virtual const HexagonRegisterInfo &getRegisterInfo() const { return RI; }
45 /// isLoadFromStackSlot - If the specified machine instruction is a direct
46 /// load from a stack slot, return the virtual or physical register number of
47 /// the destination along with the FrameIndex of the loaded stack slot. If
48 /// not, return 0. This predicate must return 0 if the instruction has
49 /// any side effects other than loading from the stack slot.
50 virtual unsigned isLoadFromStackSlot(const MachineInstr *MI,
51 int &FrameIndex) const;
53 /// isStoreToStackSlot - If the specified machine instruction is a direct
54 /// store to a stack slot, return the virtual or physical register number of
55 /// the source reg along with the FrameIndex of the loaded stack slot. If
56 /// not, return 0. This predicate must return 0 if the instruction has
57 /// any side effects other than storing to the stack slot.
58 virtual unsigned isStoreToStackSlot(const MachineInstr *MI,
59 int &FrameIndex) const;
62 virtual bool AnalyzeBranch(MachineBasicBlock &MBB,MachineBasicBlock *&TBB,
63 MachineBasicBlock *&FBB,
64 SmallVectorImpl<MachineOperand> &Cond,
65 bool AllowModify) const;
67 virtual unsigned RemoveBranch(MachineBasicBlock &MBB) const;
69 virtual unsigned InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB,
70 MachineBasicBlock *FBB,
71 const SmallVectorImpl<MachineOperand> &Cond,
74 virtual bool analyzeCompare(const MachineInstr *MI,
75 unsigned &SrcReg, unsigned &SrcReg2,
76 int &Mask, int &Value) const;
78 virtual void copyPhysReg(MachineBasicBlock &MBB,
79 MachineBasicBlock::iterator I, DebugLoc DL,
80 unsigned DestReg, unsigned SrcReg,
83 virtual void storeRegToStackSlot(MachineBasicBlock &MBB,
84 MachineBasicBlock::iterator MBBI,
85 unsigned SrcReg, bool isKill, int FrameIndex,
86 const TargetRegisterClass *RC,
87 const TargetRegisterInfo *TRI) const;
89 virtual void storeRegToAddr(MachineFunction &MF, unsigned SrcReg, bool isKill,
90 SmallVectorImpl<MachineOperand> &Addr,
91 const TargetRegisterClass *RC,
92 SmallVectorImpl<MachineInstr*> &NewMIs) const;
94 virtual void loadRegFromStackSlot(MachineBasicBlock &MBB,
95 MachineBasicBlock::iterator MBBI,
96 unsigned DestReg, int FrameIndex,
97 const TargetRegisterClass *RC,
98 const TargetRegisterInfo *TRI) const;
100 virtual void loadRegFromAddr(MachineFunction &MF, unsigned DestReg,
101 SmallVectorImpl<MachineOperand> &Addr,
102 const TargetRegisterClass *RC,
103 SmallVectorImpl<MachineInstr*> &NewMIs) const;
105 virtual MachineInstr* foldMemoryOperandImpl(MachineFunction &MF,
107 const SmallVectorImpl<unsigned> &Ops,
108 int FrameIndex) const;
110 virtual MachineInstr* foldMemoryOperandImpl(MachineFunction &MF,
112 const SmallVectorImpl<unsigned> &Ops,
113 MachineInstr* LoadMI) const {
117 unsigned createVR(MachineFunction* MF, MVT VT) const;
119 virtual bool isBranch(const MachineInstr *MI) const;
120 virtual bool isPredicable(MachineInstr *MI) const;
122 PredicateInstruction(MachineInstr *MI,
123 const SmallVectorImpl<MachineOperand> &Cond) const;
125 virtual bool isProfitableToIfCvt(MachineBasicBlock &MBB, unsigned NumCycles,
126 unsigned ExtraPredCycles,
127 const BranchProbability &Probability) const;
129 virtual bool isProfitableToIfCvt(MachineBasicBlock &TMBB,
130 unsigned NumTCycles, unsigned ExtraTCycles,
131 MachineBasicBlock &FMBB,
132 unsigned NumFCycles, unsigned ExtraFCycles,
133 const BranchProbability &Probability) const;
135 virtual bool isPredicated(const MachineInstr *MI) const;
136 virtual bool isPredicated(unsigned Opcode) const;
137 virtual bool isPredicatedTrue(const MachineInstr *MI) const;
138 virtual bool isPredicatedTrue(unsigned Opcode) const;
139 virtual bool isPredicatedNew(const MachineInstr *MI) const;
140 virtual bool isPredicatedNew(unsigned Opcode) const;
141 virtual bool DefinesPredicate(MachineInstr *MI,
142 std::vector<MachineOperand> &Pred) const;
144 SubsumesPredicate(const SmallVectorImpl<MachineOperand> &Pred1,
145 const SmallVectorImpl<MachineOperand> &Pred2) const;
148 ReverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const;
151 isProfitableToDupForIfCvt(MachineBasicBlock &MBB,unsigned NumCycles,
152 const BranchProbability &Probability) const;
154 virtual DFAPacketizer*
155 CreateTargetScheduleState(const TargetMachine *TM,
156 const ScheduleDAG *DAG) const;
158 virtual bool isSchedulingBoundary(const MachineInstr *MI,
159 const MachineBasicBlock *MBB,
160 const MachineFunction &MF) const;
161 bool isValidOffset(const int Opcode, const int Offset) const;
162 bool isValidAutoIncImm(const EVT VT, const int Offset) const;
163 bool isMemOp(const MachineInstr *MI) const;
164 bool isSpillPredRegOp(const MachineInstr *MI) const;
165 bool isU6_3Immediate(const int value) const;
166 bool isU6_2Immediate(const int value) const;
167 bool isU6_1Immediate(const int value) const;
168 bool isU6_0Immediate(const int value) const;
169 bool isS4_3Immediate(const int value) const;
170 bool isS4_2Immediate(const int value) const;
171 bool isS4_1Immediate(const int value) const;
172 bool isS4_0Immediate(const int value) const;
173 bool isS12_Immediate(const int value) const;
174 bool isU6_Immediate(const int value) const;
175 bool isS8_Immediate(const int value) const;
176 bool isS6_Immediate(const int value) const;
178 bool isSaveCalleeSavedRegsCall(const MachineInstr* MI) const;
179 bool isConditionalTransfer(const MachineInstr* MI) const;
180 bool isConditionalALU32 (const MachineInstr* MI) const;
181 bool isConditionalLoad (const MachineInstr* MI) const;
182 bool isConditionalStore(const MachineInstr* MI) const;
183 bool isNewValueInst(const MachineInstr* MI) const;
184 bool isNewValue(const MachineInstr* MI) const;
185 bool isDotNewInst(const MachineInstr* MI) const;
186 int GetDotOldOp(const int opc) const;
187 int GetDotNewOp(const MachineInstr* MI) const;
188 int GetDotNewPredOp(MachineInstr *MI,
189 const MachineBranchProbabilityInfo
191 bool mayBeNewStore(const MachineInstr* MI) const;
192 bool isDeallocRet(const MachineInstr *MI) const;
193 unsigned getInvertedPredicatedOpcode(const int Opc) const;
194 bool isExtendable(const MachineInstr* MI) const;
195 bool isExtended(const MachineInstr* MI) const;
196 bool isPostIncrement(const MachineInstr* MI) const;
197 bool isNewValueStore(const MachineInstr* MI) const;
198 bool isNewValueStore(unsigned Opcode) const;
199 bool isNewValueJump(const MachineInstr* MI) const;
200 bool isNewValueJumpCandidate(const MachineInstr *MI) const;
203 void immediateExtend(MachineInstr *MI) const;
204 bool isConstExtended(MachineInstr *MI) const;
205 int getDotNewPredJumpOp(MachineInstr *MI,
206 const MachineBranchProbabilityInfo *MBPI) const;
207 unsigned getAddrMode(const MachineInstr* MI) const;
208 bool isOperandExtended(const MachineInstr *MI,
209 unsigned short OperandNum) const;
210 unsigned short getCExtOpNum(const MachineInstr *MI) const;
211 int getMinValue(const MachineInstr *MI) const;
212 int getMaxValue(const MachineInstr *MI) const;
213 bool NonExtEquivalentExists (const MachineInstr *MI) const;
214 short getNonExtOpcode(const MachineInstr *MI) const;
215 bool PredOpcodeHasJMP_c(Opcode_t Opcode) const;
216 bool PredOpcodeHasNot(Opcode_t Opcode) const;
219 int getMatchingCondBranchOpcode(int Opc, bool sense) const;