1//===-- MipsSEISelDAGToDAG.h - A Dag to Dag Inst Selector for MipsSE -----===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// Subclass of MipsDAGToDAGISel specialized for mips32/64.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_LIB_TARGET_MIPS_MIPSSEISELDAGTODAG_H
14#define LLVM_LIB_TARGET_MIPS_MIPSSEISELDAGTODAG_H
15
16#include "MipsISelDAGToDAG.h"
17
18namespace llvm {
19
20class MipsSEDAGToDAGISel : public MipsDAGToDAGISel {
21
22public:
23  explicit MipsSEDAGToDAGISel(MipsTargetMachine &TM, CodeGenOpt::Level OL)
24      : MipsDAGToDAGISel(TM, OL) {}
25
26private:
27
28  bool runOnMachineFunction(MachineFunction &MF) override;
29
30  void getAnalysisUsage(AnalysisUsage &AU) const override;
31
32  void addDSPCtrlRegOperands(bool IsDef, MachineInstr &MI,
33                             MachineFunction &MF);
34
35  unsigned getMSACtrlReg(const SDValue RegIdx) const;
36
37  bool replaceUsesWithZeroReg(MachineRegisterInfo *MRI, const MachineInstr&);
38
39  std::pair<SDNode *, SDNode *> selectMULT(SDNode *N, unsigned Opc,
40                                           const SDLoc &dl, EVT Ty, bool HasLo,
41                                           bool HasHi);
42
43  void selectAddE(SDNode *Node, const SDLoc &DL) const;
44
45  bool selectAddrFrameIndex(SDValue Addr, SDValue &Base, SDValue &Offset) const;
46  bool selectAddrFrameIndexOffset(SDValue Addr, SDValue &Base, SDValue &Offset,
47                                  unsigned OffsetBits,
48                                  unsigned ShiftAmount) const;
49
50  bool selectAddrRegImm(SDValue Addr, SDValue &Base,
51                        SDValue &Offset) const override;
52
53  bool selectAddrDefault(SDValue Addr, SDValue &Base,
54                         SDValue &Offset) const override;
55
56  bool selectIntAddr(SDValue Addr, SDValue &Base,
57                     SDValue &Offset) const override;
58
59  bool selectAddrRegImm9(SDValue Addr, SDValue &Base,
60                         SDValue &Offset) const;
61
62  bool selectAddrRegImm11(SDValue Addr, SDValue &Base,
63                          SDValue &Offset) const;
64
65  bool selectAddrRegImm12(SDValue Addr, SDValue &Base,
66                          SDValue &Offset) const;
67
68  bool selectAddrRegImm16(SDValue Addr, SDValue &Base,
69                          SDValue &Offset) const;
70
71  bool selectIntAddr11MM(SDValue Addr, SDValue &Base,
72                         SDValue &Offset) const override;
73
74  bool selectIntAddr12MM(SDValue Addr, SDValue &Base,
75                         SDValue &Offset) const override;
76
77  bool selectIntAddr16MM(SDValue Addr, SDValue &Base,
78                         SDValue &Offset) const override;
79
80  bool selectIntAddrLSL2MM(SDValue Addr, SDValue &Base,
81                           SDValue &Offset) const override;
82
83  bool selectIntAddrSImm10(SDValue Addr, SDValue &Base,
84                           SDValue &Offset) const override;
85
86  bool selectIntAddrSImm10Lsl1(SDValue Addr, SDValue &Base,
87                               SDValue &Offset) const override;
88
89  bool selectIntAddrSImm10Lsl2(SDValue Addr, SDValue &Base,
90                               SDValue &Offset) const override;
91
92  bool selectIntAddrSImm10Lsl3(SDValue Addr, SDValue &Base,
93                               SDValue &Offset) const override;
94
95  /// Select constant vector splats.
96  bool selectVSplat(SDNode *N, APInt &Imm,
97                    unsigned MinSizeInBits) const override;
98  /// Select constant vector splats whose value fits in a given integer.
99  bool selectVSplatCommon(SDValue N, SDValue &Imm, bool Signed,
100                                  unsigned ImmBitSize) const;
101  /// Select constant vector splats whose value fits in a uimm1.
102  bool selectVSplatUimm1(SDValue N, SDValue &Imm) const override;
103  /// Select constant vector splats whose value fits in a uimm2.
104  bool selectVSplatUimm2(SDValue N, SDValue &Imm) const override;
105  /// Select constant vector splats whose value fits in a uimm3.
106  bool selectVSplatUimm3(SDValue N, SDValue &Imm) const override;
107  /// Select constant vector splats whose value fits in a uimm4.
108  bool selectVSplatUimm4(SDValue N, SDValue &Imm) const override;
109  /// Select constant vector splats whose value fits in a uimm5.
110  bool selectVSplatUimm5(SDValue N, SDValue &Imm) const override;
111  /// Select constant vector splats whose value fits in a uimm6.
112  bool selectVSplatUimm6(SDValue N, SDValue &Imm) const override;
113  /// Select constant vector splats whose value fits in a uimm8.
114  bool selectVSplatUimm8(SDValue N, SDValue &Imm) const override;
115  /// Select constant vector splats whose value fits in a simm5.
116  bool selectVSplatSimm5(SDValue N, SDValue &Imm) const override;
117  /// Select constant vector splats whose value is a power of 2.
118  bool selectVSplatUimmPow2(SDValue N, SDValue &Imm) const override;
119  /// Select constant vector splats whose value is the inverse of a
120  /// power of 2.
121  bool selectVSplatUimmInvPow2(SDValue N, SDValue &Imm) const override;
122  /// Select constant vector splats whose value is a run of set bits
123  /// ending at the most significant bit.
124  bool selectVSplatMaskL(SDValue N, SDValue &Imm) const override;
125  /// Select constant vector splats whose value is a run of set bits
126  /// starting at bit zero.
127  bool selectVSplatMaskR(SDValue N, SDValue &Imm) const override;
128
129  bool trySelect(SDNode *Node) override;
130
131  // Emits proper ABI for _mcount profiling calls.
132  void emitMCountABI(MachineInstr &MI, MachineBasicBlock &MBB,
133                     MachineFunction &MF);
134
135  void processFunctionAfterISel(MachineFunction &MF) override;
136
137  bool SelectInlineAsmMemoryOperand(const SDValue &Op,
138                                    unsigned ConstraintID,
139                                    std::vector<SDValue> &OutOps) override;
140};
141
142FunctionPass *createMipsSEISelDag(MipsTargetMachine &TM,
143                                  CodeGenOpt::Level OptLevel);
144}
145
146#endif
147