NVPTXISelDAGToDAG.h revision 360784 
1//===-- NVPTXISelDAGToDAG.h - A dag to dag inst selector for NVPTX --------===//
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// This file defines an instruction selector for the NVPTX target.
10//
11//===----------------------------------------------------------------------===//
12
13#ifndef LLVM_LIB_TARGET_NVPTX_NVPTXISELDAGTODAG_H
14#define LLVM_LIB_TARGET_NVPTX_NVPTXISELDAGTODAG_H
15
16#include "NVPTX.h"
17#include "NVPTXISelLowering.h"
18#include "NVPTXRegisterInfo.h"
19#include "NVPTXTargetMachine.h"
20#include "MCTargetDesc/NVPTXBaseInfo.h"
21#include "llvm/CodeGen/SelectionDAGISel.h"
22#include "llvm/IR/Intrinsics.h"
23#include "llvm/Support/Compiler.h"
24
25namespace llvm {
26
27class LLVM_LIBRARY_VISIBILITY NVPTXDAGToDAGISel : public SelectionDAGISel {
28  const NVPTXTargetMachine &TM;
29
30  // If true, generate mul.wide from sext and mul
31  bool doMulWide;
32
33  int getDivF32Level() const;
34  bool usePrecSqrtF32() const;
35  bool useF32FTZ() const;
36  bool allowFMA() const;
37  bool allowUnsafeFPMath() const;
38  bool useShortPointers() const;
39
40public:
41  explicit NVPTXDAGToDAGISel(NVPTXTargetMachine &tm,
42                             CodeGenOpt::Level   OptLevel);
43
44  // Pass Name
45  StringRef getPassName() const override {
46    return "NVPTX DAG->DAG Pattern Instruction Selection";
47  }
48  bool runOnMachineFunction(MachineFunction &MF) override;
49  const NVPTXSubtarget *Subtarget = nullptr;
50
51  bool SelectInlineAsmMemoryOperand(const SDValue &Op,
52                                    unsigned ConstraintID,
53                                    std::vector<SDValue> &OutOps) override;
54private:
55// Include the pieces autogenerated from the target description.
56#include "NVPTXGenDAGISel.inc"
57
58  void Select(SDNode *N) override;
59  bool tryIntrinsicNoChain(SDNode *N);
60  bool tryIntrinsicChain(SDNode *N);
61  void SelectTexSurfHandle(SDNode *N);
62  bool tryLoad(SDNode *N);
63  bool tryLoadVector(SDNode *N);
64  bool tryLDGLDU(SDNode *N);
65  bool tryStore(SDNode *N);
66  bool tryStoreVector(SDNode *N);
67  bool tryLoadParam(SDNode *N);
68  bool tryStoreRetval(SDNode *N);
69  bool tryStoreParam(SDNode *N);
70  void SelectAddrSpaceCast(SDNode *N);
71  bool tryTextureIntrinsic(SDNode *N);
72  bool trySurfaceIntrinsic(SDNode *N);
73  bool tryBFE(SDNode *N);
74  bool tryConstantFP16(SDNode *N);
75  bool SelectSETP_F16X2(SDNode *N);
76  bool tryEXTRACT_VECTOR_ELEMENT(SDNode *N);
77
78  inline SDValue getI32Imm(unsigned Imm, const SDLoc &DL) {
79    return CurDAG->getTargetConstant(Imm, DL, MVT::i32);
80  }
81
82  // Match direct address complex pattern.
83  bool SelectDirectAddr(SDValue N, SDValue &Address);
84
85  bool SelectADDRri_imp(SDNode *OpNode, SDValue Addr, SDValue &Base,
86                        SDValue &Offset, MVT mvt);
87  bool SelectADDRri(SDNode *OpNode, SDValue Addr, SDValue &Base,
88                    SDValue &Offset);
89  bool SelectADDRri64(SDNode *OpNode, SDValue Addr, SDValue &Base,
90                      SDValue &Offset);
91  bool SelectADDRsi_imp(SDNode *OpNode, SDValue Addr, SDValue &Base,
92                        SDValue &Offset, MVT mvt);
93  bool SelectADDRsi(SDNode *OpNode, SDValue Addr, SDValue &Base,
94                    SDValue &Offset);
95  bool SelectADDRsi64(SDNode *OpNode, SDValue Addr, SDValue &Base,
96                      SDValue &Offset);
97
98  bool ChkMemSDNodeAddressSpace(SDNode *N, unsigned int spN) const;
99
100  static unsigned GetConvertOpcode(MVT DestTy, MVT SrcTy, bool IsSigned);
101};
102} // end namespace llvm
103
104#endif
105