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//===-- UopsBenchmarkRunner.cpp ---------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "UopsBenchmarkRunner.h"
#include "Target.h"
namespace llvm {
namespace exegesis {
UopsBenchmarkRunner::~UopsBenchmarkRunner() = default;
Expected<std::vector<BenchmarkMeasure>>
UopsBenchmarkRunner::runMeasurements(const FunctionExecutor &Executor) const {
std::vector<BenchmarkMeasure> Result;
const PfmCountersInfo &PCI = State.getPfmCounters();
// Uops per port.
for (const auto *IssueCounter = PCI.IssueCounters,
*IssueCounterEnd = PCI.IssueCounters + PCI.NumIssueCounters;
IssueCounter != IssueCounterEnd; ++IssueCounter) {
if (!IssueCounter->Counter)
continue;
auto ExpectedCounterValue = Executor.runAndSample(IssueCounter->Counter);
if (!ExpectedCounterValue)
return ExpectedCounterValue.takeError();
Result.push_back(BenchmarkMeasure::Create(IssueCounter->ProcResName,
(*ExpectedCounterValue)[0]));
}
// NumMicroOps.
if (const char *const UopsCounter = PCI.UopsCounter) {
auto ExpectedCounterValue = Executor.runAndSample(UopsCounter);
if (!ExpectedCounterValue)
return ExpectedCounterValue.takeError();
Result.push_back(
BenchmarkMeasure::Create("NumMicroOps", (*ExpectedCounterValue)[0]));
}
return std::move(Result);
}
} // namespace exegesis
} // namespace llvm
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