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, CodeGenOpt::Level OL) 24 : MipsDAGToDAGISel(TM, OL) {} 25 26 private: 27 std::pair<SDNode *, SDNode *> selectMULT(SDNode *N, unsigned Opc, 28 const SDLoc &DL, EVT Ty, bool HasLo, 29 bool HasHi); 30 31 bool runOnMachineFunction(MachineFunction &MF) override; 32 33 bool selectAddr(bool SPAllowed, SDValue Addr, SDValue &Base, 34 SDValue &Offset); 35 bool selectAddr16(SDValue Addr, SDValue &Base, 36 SDValue &Offset) override; 37 bool selectAddr16SP(SDValue Addr, SDValue &Base, 38 SDValue &Offset) override; 39 40 bool trySelect(SDNode *Node) override; 41 42 void processFunctionAfterISel(MachineFunction &MF) override; 43 44 // Insert instructions to initialize the global base register in the 45 // first MBB of the function. 46 void initGlobalBaseReg(MachineFunction &MF); 47 48 void initMips16SPAliasReg(MachineFunction &MF); 49 }; 50 51 FunctionPass *createMips16ISelDag(MipsTargetMachine &TM, 52 CodeGenOpt::Level OptLevel); 53 } 54 55 #endif 56
