src/llvm/lib/Target/Mips/Mips16ISelDAGToDAG.h

   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