lib/Target/Hexagon/MCTargetDesc/HexagonMCShuffler.h

   1 //===- HexagonMCShuffler.h --------------------------------------*- C++ -*-===//
   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 declares the shuffling of insns inside a bundle according to the
  10 // packet formation rules of the Hexagon ISA.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef LLVM_LIB_TARGET_HEXAGON_MCTARGETDESC_HEXAGONMCSHUFFLER_H
  15 #define LLVM_LIB_TARGET_HEXAGON_MCTARGETDESC_HEXAGONMCSHUFFLER_H
  16
  17 #include "MCTargetDesc/HexagonMCInstrInfo.h"
  18 #include "MCTargetDesc/HexagonShuffler.h"
  19 #include "llvm/ADT/SmallVector.h"
  20
  21 namespace llvm {
  22
  23 class MCContext;
  24 class MCInst;
  25 class MCInstrInfo;
  26 class MCSubtargetInfo;
  27
  28 // Insn bundle shuffler.
  29 class HexagonMCShuffler : public HexagonShuffler {
  30 public:
  31   HexagonMCShuffler(MCContext &Context, bool Fatal, MCInstrInfo const &MCII,
  32                     MCSubtargetInfo const &STI, MCInst &MCB)
  33       : HexagonShuffler(Context, Fatal, MCII, STI) {
  34     init(MCB);
  35   }
  36
  37   HexagonMCShuffler(MCContext &Context, bool Fatal, MCInstrInfo const &MCII,
  38                     MCSubtargetInfo const &STI, MCInst &MCB,
  39                     MCInst const &AddMI, bool InsertAtFront)
  40       : HexagonShuffler(Context, Fatal, MCII, STI) {
  41     init(MCB, AddMI, InsertAtFront);
  42   }
  43
  44   // Copy reordered bundle to another.
  45   void copyTo(MCInst &MCB);
  46
  47   // Reorder and copy result to another.
  48   bool reshuffleTo(MCInst &MCB);
  49
  50 private:
  51   void init(MCInst &MCB);
  52   void init(MCInst &MCB, MCInst const &AddMI, bool InsertAtFront);
  53 };
  54
  55 // Invocation of the shuffler.
  56 bool HexagonMCShuffle(MCContext &Context, bool Fatal, MCInstrInfo const &MCII,
  57                       MCSubtargetInfo const &STI, MCInst &MCB);
  58 bool HexagonMCShuffle(MCContext &Context, MCInstrInfo const &MCII,
  59                       MCSubtargetInfo const &STI, MCInst &MCB,
  60                       MCInst const &AddMI, int fixupCount);
  61 bool HexagonMCShuffle(MCContext &Context, MCInstrInfo const &MCII,
  62                       MCSubtargetInfo const &STI, MCInst &MCB,
  63                       SmallVector<DuplexCandidate, 8> possibleDuplexes);
  64
  65 } // end namespace llvm
  66
  67 #endif // LLVM_LIB_TARGET_HEXAGON_MCTARGETDESC_HEXAGONMCSHUFFLER_H