1 //===-- XCoreInstrInfo.h - XCore Instruction Information --------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file contains the XCore implementation of the TargetInstrInfo class. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef LLVM_LIB_TARGET_XCORE_XCOREINSTRINFO_H 15 #define LLVM_LIB_TARGET_XCORE_XCOREINSTRINFO_H 16 17 #include "XCoreRegisterInfo.h" 18 #include "llvm/Target/TargetInstrInfo.h" 19 20 #define GET_INSTRINFO_HEADER 21 #include "XCoreGenInstrInfo.inc" 22 23 namespace llvm { 24 25 class XCoreInstrInfo : public XCoreGenInstrInfo { 26 const XCoreRegisterInfo RI; 27 virtual void anchor(); 28 public: 29 XCoreInstrInfo(); 30 31 /// getRegisterInfo - TargetInstrInfo is a superset of MRegister info. As 32 /// such, whenever a client has an instance of instruction info, it should 33 /// always be able to get register info as well (through this method). 34 /// getRegisterInfo()35 const TargetRegisterInfo &getRegisterInfo() const { return RI; } 36 37 /// isLoadFromStackSlot - If the specified machine instruction is a direct 38 /// load from a stack slot, return the virtual or physical register number of 39 /// the destination along with the FrameIndex of the loaded stack slot. If 40 /// not, return 0. This predicate must return 0 if the instruction has 41 /// any side effects other than loading from the stack slot. 42 unsigned isLoadFromStackSlot(const MachineInstr &MI, 43 int &FrameIndex) const override; 44 45 /// isStoreToStackSlot - If the specified machine instruction is a direct 46 /// store to a stack slot, return the virtual or physical register number of 47 /// the source reg 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 storing to the stack slot. 50 unsigned isStoreToStackSlot(const MachineInstr &MI, 51 int &FrameIndex) const override; 52 53 bool analyzeBranch(MachineBasicBlock &MBB, MachineBasicBlock *&TBB, 54 MachineBasicBlock *&FBB, 55 SmallVectorImpl<MachineOperand> &Cond, 56 bool AllowModify) const override; 57 58 unsigned InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB, 59 MachineBasicBlock *FBB, ArrayRef<MachineOperand> Cond, 60 const DebugLoc &DL) const override; 61 62 unsigned RemoveBranch(MachineBasicBlock &MBB) const override; 63 64 void copyPhysReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator I, 65 const DebugLoc &DL, unsigned DestReg, unsigned SrcReg, 66 bool KillSrc) const override; 67 68 void storeRegToStackSlot(MachineBasicBlock &MBB, 69 MachineBasicBlock::iterator MI, 70 unsigned SrcReg, bool isKill, int FrameIndex, 71 const TargetRegisterClass *RC, 72 const TargetRegisterInfo *TRI) const override; 73 74 void loadRegFromStackSlot(MachineBasicBlock &MBB, 75 MachineBasicBlock::iterator MI, 76 unsigned DestReg, int FrameIndex, 77 const TargetRegisterClass *RC, 78 const TargetRegisterInfo *TRI) const override; 79 80 bool ReverseBranchCondition( 81 SmallVectorImpl<MachineOperand> &Cond) const override; 82 83 // Emit code before MBBI to load immediate value into physical register Reg. 84 // Returns an iterator to the new instruction. 85 MachineBasicBlock::iterator loadImmediate(MachineBasicBlock &MBB, 86 MachineBasicBlock::iterator MI, 87 unsigned Reg, uint64_t Value) const; 88 }; 89 90 } 91 92 #endif 93