llvm/tools/llvm-exegesis/lib/LatencyBenchmarkRunner.h

   1 //===-- LatencyBenchmarkRunner.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 ///
   9 /// \file
  10 /// A BenchmarkRunner implementation to measure instruction latencies.
  11 ///
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef LLVM_TOOLS_LLVM_EXEGESIS_LATENCY_H
  15 #define LLVM_TOOLS_LLVM_EXEGESIS_LATENCY_H
  16
  17 #include "BenchmarkRunner.h"
  18 #include "Target.h"
  19
  20 namespace llvm {
  21 namespace exegesis {
  22
  23 class LatencyBenchmarkRunner : public BenchmarkRunner {
  24 public:
  25   LatencyBenchmarkRunner(const LLVMState &State, Benchmark::ModeE Mode,
  26                          BenchmarkPhaseSelectorE BenchmarkPhaseSelector,
  27                          Benchmark::ResultAggregationModeE ResultAggMode,
  28                          ExecutionModeE ExecutionMode,
  29                          ArrayRef<ValidationEvent> ValCounters,
  30                          unsigned BenchmarkRepeatCount);
  31   ~LatencyBenchmarkRunner() override;
  32
  33 private:
  34   Expected<std::vector<BenchmarkMeasure>>
  35   runMeasurements(const FunctionExecutor &Executor) const override;
  36
  37   Benchmark::ResultAggregationModeE ResultAggMode;
  38   unsigned NumMeasurements;
  39 };
  40 } // namespace exegesis
  41 } // namespace llvm
  42
  43 #endif // LLVM_TOOLS_LLVM_EXEGESIS_LATENCY_H