1 //===---- Mips16ISelDAGToDAG.h - A Dag to Dag Inst Selector for Mips ------===// 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 // Subclass of MipsDAGToDAGISel specialized for mips16. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #ifndef MIPS16ISELDAGTODAG_H 15 #define MIPS16ISELDAGTODAG_H 16 17 #include "MipsISelDAGToDAG.h" 18 19 namespace llvm { 20 21 class Mips16DAGToDAGISel : public MipsDAGToDAGISel { 22 public: Mips16DAGToDAGISel(MipsTargetMachine & TM)23 explicit Mips16DAGToDAGISel(MipsTargetMachine &TM) : MipsDAGToDAGISel(TM) {} 24 25 private: 26 std::pair<SDNode*, SDNode*> selectMULT(SDNode *N, unsigned Opc, DebugLoc DL, 27 EVT Ty, bool HasLo, bool HasHi); 28 29 SDValue getMips16SPAliasReg(); 30 31 void getMips16SPRefReg(SDNode *Parent, SDValue &AliasReg); 32 33 virtual bool selectAddr16(SDNode *Parent, SDValue N, SDValue &Base, 34 SDValue &Offset, SDValue &Alias); 35 36 virtual std::pair<bool, SDNode*> selectNode(SDNode *Node); 37 38 virtual void processFunctionAfterISel(MachineFunction &MF); 39 40 // Insert instructions to initialize the global base register in the 41 // first MBB of the function. 42 void initGlobalBaseReg(MachineFunction &MF); 43 44 void initMips16SPAliasReg(MachineFunction &MF); 45 }; 46 47 FunctionPass *createMips16ISelDag(MipsTargetMachine &TM); 48 49 } 50 51 #endif 52