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  1. //===--------------------- InstructionTables.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. /// \file
  9. ///
  10. /// This file implements a custom stage to generate instruction tables.
  11. /// See the description of command-line flag -instruction-tables in
  12. /// docs/CommandGuide/lvm-mca.rst
  13. ///
  14. //===----------------------------------------------------------------------===//
  15.  
  16. #ifndef LLVM_MCA_STAGES_INSTRUCTIONTABLES_H
  17. #define LLVM_MCA_STAGES_INSTRUCTIONTABLES_H
  18.  
  19. #include "llvm/ADT/SmallVector.h"
  20. #include "llvm/MC/MCSchedule.h"
  21. #include "llvm/MCA/HardwareUnits/Scheduler.h"
  22. #include "llvm/MCA/Stages/Stage.h"
  23. #include "llvm/MCA/Support.h"
  24.  
  25. namespace llvm {
  26. namespace mca {
  27.  
  28. class InstructionTables final : public Stage {
  29.   const MCSchedModel &SM;
  30.   SmallVector<ResourceUse, 4> UsedResources;
  31.   SmallVector<uint64_t, 8> Masks;
  32.  
  33. public:
  34.   InstructionTables(const MCSchedModel &Model)
  35.       : SM(Model), Masks(Model.getNumProcResourceKinds()) {
  36.     computeProcResourceMasks(Model, Masks);
  37.   }
  38.  
  39.   bool hasWorkToComplete() const override { return false; }
  40.   Error execute(InstRef &IR) override;
  41. };
  42. } // namespace mca
  43. } // namespace llvm
  44.  
  45. #endif // LLVM_MCA_STAGES_INSTRUCTIONTABLES_H
  46.