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 LLVM_LIB_TARGET_MIPS_MIPS16ISELDAGTODAG_H 15 #define LLVM_LIB_TARGET_MIPS_MIPS16ISELDAGTODAG_H 16 17 #include "MipsISelDAGToDAG.h" 18 19 namespace llvm { 20 21 class Mips16DAGToDAGISel : public MipsDAGToDAGISel { 22 public: 23 explicit Mips16DAGToDAGISel(MipsTargetMachine &TM) : MipsDAGToDAGISel(TM) {} 24 25 private: 26 std::pair<SDNode*, SDNode*> selectMULT(SDNode *N, unsigned Opc, SDLoc DL, 27 EVT Ty, bool HasLo, bool HasHi); 28 29 SDValue getMips16SPAliasReg(); 30 31 bool runOnMachineFunction(MachineFunction &MF) override; 32 33 void getMips16SPRefReg(SDNode *Parent, SDValue &AliasReg); 34 35 bool selectAddr16(SDNode *Parent, SDValue N, SDValue &Base, 36 SDValue &Offset, SDValue &Alias) override; 37 38 std::pair<bool, SDNode*> selectNode(SDNode *Node) override; 39 40 void processFunctionAfterISel(MachineFunction &MF) override; 41 42 // Insert instructions to initialize the global base register in the 43 // first MBB of the function. 44 void initGlobalBaseReg(MachineFunction &MF); 45 46 void initMips16SPAliasReg(MachineFunction &MF); 47 }; 48 49 FunctionPass *createMips16ISelDag(MipsTargetMachine &TM); 50 51 } 52 53 #endif 54
