llvm/lib/Target/X86/X86MacroFusion.h

   1 //===- X86MacroFusion.h - X86 Macro Fusion --------------------------------===//
   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 /// \file This file contains the X86 definition of the DAG scheduling mutation
  10 ///  to pair instructions back to back.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef LLVM_LIB_TARGET_X86_X86MACROFUSION_H
  15 #define LLVM_LIB_TARGET_X86_X86MACROFUSION_H
  16
  17 #include <memory>
  18
  19 namespace llvm {
  20
  21 class ScheduleDAGMutation;
  22
  23 /// Note that you have to add:
  24 ///   DAG.addMutation(createX86MacroFusionDAGMutation());
  25 /// to X86PassConfig::createMachineScheduler() to have an effect.
  26 std::unique_ptr<ScheduleDAGMutation>
  27 createX86MacroFusionDAGMutation();
  28
  29 } // end namespace llvm
  30
  31 #endif