MipsSEISelDAGToDAG.h revision 36b56886974eae4f9c5ebc96befd3e7bfe5de338 
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  bool selectAddrFrameIndex(SDValue Addr, SDValue &Base, SDValue &Offset) const;
44  bool selectAddrFrameIndexOffset(SDValue Addr, SDValue &Base, SDValue &Offset,
45                                  unsigned OffsetBits) const;
46
47  virtual bool selectAddrRegImm(SDValue Addr, SDValue &Base,
48                                SDValue &Offset) const;
49
50  virtual bool selectAddrRegReg(SDValue Addr, SDValue &Base,
51                                SDValue &Offset) const;
52
53  virtual bool selectAddrDefault(SDValue Addr, SDValue &Base,
54                                 SDValue &Offset) const;
55
56  virtual bool selectIntAddr(SDValue Addr, SDValue &Base,
57                             SDValue &Offset) const;
58
59  virtual bool selectAddrRegImm10(SDValue Addr, SDValue &Base,
60                                  SDValue &Offset) const;
61
62  virtual bool selectAddrRegImm12(SDValue Addr, SDValue &Base,
63                                  SDValue &Offset) const;
64
65  virtual bool selectIntAddrMM(SDValue Addr, SDValue &Base,
66                               SDValue &Offset) const;
67
68  virtual bool selectIntAddrMSA(SDValue Addr, SDValue &Base,
69                                SDValue &Offset) const;
70
71  /// \brief Select constant vector splats.
72  virtual bool selectVSplat(SDNode *N, APInt &Imm) const;
73  /// \brief Select constant vector splats whose value fits in a given integer.
74  virtual bool selectVSplatCommon(SDValue N, SDValue &Imm, bool Signed,
75                                  unsigned ImmBitSize) const;
76  /// \brief Select constant vector splats whose value fits in a uimm1.
77  virtual bool selectVSplatUimm1(SDValue N, SDValue &Imm) const;
78  /// \brief Select constant vector splats whose value fits in a uimm2.
79  virtual bool selectVSplatUimm2(SDValue N, SDValue &Imm) const;
80  /// \brief Select constant vector splats whose value fits in a uimm3.
81  virtual bool selectVSplatUimm3(SDValue N, SDValue &Imm) const;
82  /// \brief Select constant vector splats whose value fits in a uimm4.
83  virtual bool selectVSplatUimm4(SDValue N, SDValue &Imm) const;
84  /// \brief Select constant vector splats whose value fits in a uimm5.
85  virtual bool selectVSplatUimm5(SDValue N, SDValue &Imm) const;
86  /// \brief Select constant vector splats whose value fits in a uimm6.
87  virtual bool selectVSplatUimm6(SDValue N, SDValue &Imm) const;
88  /// \brief Select constant vector splats whose value fits in a uimm8.
89  virtual bool selectVSplatUimm8(SDValue N, SDValue &Imm) const;
90  /// \brief Select constant vector splats whose value fits in a simm5.
91  virtual bool selectVSplatSimm5(SDValue N, SDValue &Imm) const;
92  /// \brief Select constant vector splats whose value is a power of 2.
93  virtual bool selectVSplatUimmPow2(SDValue N, SDValue &Imm) const;
94  /// \brief Select constant vector splats whose value is the inverse of a
95  /// power of 2.
96  virtual bool selectVSplatUimmInvPow2(SDValue N, SDValue &Imm) const;
97  /// \brief Select constant vector splats whose value is a run of set bits
98  /// ending at the most significant bit
99  virtual bool selectVSplatMaskL(SDValue N, SDValue &Imm) const;
100  /// \brief Select constant vector splats whose value is a run of set bits
101  /// starting at bit zero.
102  virtual bool selectVSplatMaskR(SDValue N, SDValue &Imm) const;
103
104  virtual std::pair<bool, SDNode*> selectNode(SDNode *Node);
105
106  virtual void processFunctionAfterISel(MachineFunction &MF);
107
108  // Insert instructions to initialize the global base register in the
109  // first MBB of the function.
110  void initGlobalBaseReg(MachineFunction &MF);
111};
112
113FunctionPass *createMipsSEISelDag(MipsTargetMachine &TM);
114
115}
116
117#endif
118