1 //===-- UopsBenchmarkRunner.cpp ---------------------------------*- 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 #include "UopsBenchmarkRunner.h" 10 11 #include "Target.h" 12 13 namespace llvm { 14 namespace exegesis { 15 16 UopsBenchmarkRunner::~UopsBenchmarkRunner() = default; 17 18 Expected<std::vector<BenchmarkMeasure>> runMeasurements(const FunctionExecutor & Executor) const19UopsBenchmarkRunner::runMeasurements(const FunctionExecutor &Executor) const { 20 std::vector<BenchmarkMeasure> Result; 21 const PfmCountersInfo &PCI = State.getPfmCounters(); 22 // Uops per port. 23 for (const auto *IssueCounter = PCI.IssueCounters, 24 *IssueCounterEnd = PCI.IssueCounters + PCI.NumIssueCounters; 25 IssueCounter != IssueCounterEnd; ++IssueCounter) { 26 if (!IssueCounter->Counter) 27 continue; 28 auto ExpectedCounterValue = Executor.runAndMeasure(IssueCounter->Counter); 29 if (!ExpectedCounterValue) 30 return ExpectedCounterValue.takeError(); 31 Result.push_back(BenchmarkMeasure::Create(IssueCounter->ProcResName, 32 *ExpectedCounterValue)); 33 } 34 // NumMicroOps. 35 if (const char *const UopsCounter = PCI.UopsCounter) { 36 auto ExpectedCounterValue = Executor.runAndMeasure(UopsCounter); 37 if (!ExpectedCounterValue) 38 return ExpectedCounterValue.takeError(); 39 Result.push_back( 40 BenchmarkMeasure::Create("NumMicroOps", *ExpectedCounterValue)); 41 } 42 return std::move(Result); 43 } 44 45 } // namespace exegesis 46 } // namespace llvm 47