lib/Target/NVPTX/NVPTXISelDAGToDAG.h

   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
  25 namespace llvm {
  26
  27 class 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
  40 public:
  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;
  50
  51   bool SelectInlineAsmMemoryOperand(const SDValue &Op,
  52                                     unsigned ConstraintID,
  53                                     std::vector<SDValue> &OutOps) override;
  54 private:
  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