MipsSEISelDAGToDAG.h revision 2fd3e67dc6438cee5e32e0d7d7d42891df7edd96 
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
28  virtual bool runOnMachineFunction(MachineFunction &MF);
29
30  void addDSPCtrlRegOperands(bool IsDef, MachineInstr &MI,
31                             MachineFunction &MF);
32
33  unsigned getMSACtrlReg(const SDValue RegIdx) const;
34
35  bool replaceUsesWithZeroReg(MachineRegisterInfo *MRI, const MachineInstr&);
36
37  std::pair<SDNode*, SDNode*> selectMULT(SDNode *N, unsigned Opc, SDLoc dl,
38                                         EVT Ty, bool HasLo, bool HasHi);
39
40  SDNode *selectAddESubE(unsigned MOp, SDValue InFlag, SDValue CmpLHS,
41                         SDLoc DL, SDNode *Node) const;
42
43  virtual bool selectAddrRegImm(SDValue Addr, SDValue &Base,
44                                SDValue &Offset) const;
45
46  virtual bool selectAddrRegReg(SDValue Addr, SDValue &Base,
47                                SDValue &Offset) const;
48
49  virtual bool selectAddrDefault(SDValue Addr, SDValue &Base,
50                                 SDValue &Offset) const;
51
52  virtual bool selectIntAddr(SDValue Addr, SDValue &Base,
53                             SDValue &Offset) const;
54
55  virtual bool selectAddrRegImm12(SDValue Addr, SDValue &Base,
56                                  SDValue &Offset) const;
57
58  virtual bool selectIntAddrMM(SDValue Addr, SDValue &Base,
59                               SDValue &Offset) const;
60
61  virtual std::pair<bool, SDNode*> selectNode(SDNode *Node);
62
63  virtual void processFunctionAfterISel(MachineFunction &MF);
64
65  // Insert instructions to initialize the global base register in the
66  // first MBB of the function.
67  void initGlobalBaseReg(MachineFunction &MF);
68};
69
70FunctionPass *createMipsSEISelDag(MipsTargetMachine &TM);
71
72}
73
74#endif
75