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 19namespace llvm { 20 21class Mips16DAGToDAGISel : public MipsDAGToDAGISel { 22public: 23 explicit Mips16DAGToDAGISel(MipsTargetMachine &TM) : MipsDAGToDAGISel(TM) {} 24 25private: 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 49FunctionPass *createMips16ISelDag(MipsTargetMachine &TM); 50 51} 52 53#endif 54