MipsSEISelDAGToDAG.h revision f283512d72757aac5bedcb270f9199194e6a12c0 
1//===-- MipsSEISelDAGToDAG.h - A Dag to Dag Inst Selector for MipsSE -----===//
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 mips32/64.
11//
12//===----------------------------------------------------------------------===//
13
14#ifndef MIPSSEISELDAGTODAG_H
15#define MIPSSEISELDAGTODAG_H
16
17#include "MipsISelDAGToDAG.h"
18
19namespace llvm {
20
21class MipsSEDAGToDAGISel : public MipsDAGToDAGISel {
22
23public:
24  explicit MipsSEDAGToDAGISel(MipsTargetMachine &TM) : MipsDAGToDAGISel(TM) {}
25
26private:
27  bool replaceUsesWithZeroReg(MachineRegisterInfo *MRI, const MachineInstr&);
28
29  std::pair<SDNode*, SDNode*> selectMULT(SDNode *N, unsigned Opc, DebugLoc dl,
30                                         EVT Ty, bool HasLo, bool HasHi);
31
32  virtual bool selectAddrRegImm(SDValue Addr, SDValue &Base,
33                                SDValue &Offset) const;
34
35  virtual bool selectAddrDefault(SDValue Addr, SDValue &Base,
36                                 SDValue &Offset) const;
37
38  virtual bool selectIntAddr(SDValue Addr, SDValue &Base,
39                             SDValue &Offset) const;
40
41  virtual std::pair<bool, SDNode*> selectNode(SDNode *Node);
42
43  virtual void processFunctionAfterISel(MachineFunction &MF);
44
45  // Insert instructions to initialize the global base register in the
46  // first MBB of the function.
47  void initGlobalBaseReg(MachineFunction &MF);
48};
49
50FunctionPass *createMipsSEISelDag(MipsTargetMachine &TM);
51
52}
53
54#endif
55