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