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  SDNode *selectAddESubE(unsigned MOp, SDValue InFlag, SDValue CmpLHS,
33                         DebugLoc DL, SDNode *Node) const;
34
35  virtual bool selectAddrRegImm(SDValue Addr, SDValue &Base,
36                                SDValue &Offset) const;
37
38  virtual bool selectAddrDefault(SDValue Addr, SDValue &Base,
39                                 SDValue &Offset) const;
40
41  virtual bool selectIntAddr(SDValue Addr, SDValue &Base,
42                             SDValue &Offset) const;
43
44  virtual std::pair<bool, SDNode*> selectNode(SDNode *Node);
45
46  virtual void processFunctionAfterISel(MachineFunction &MF);
47
48  // Insert instructions to initialize the global base register in the
49  // first MBB of the function.
50  void initGlobalBaseReg(MachineFunction &MF);
51};
52
53FunctionPass *createMipsSEISelDag(MipsTargetMachine &TM);
54
55}
56
57#endif
58