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| //===-- Latency.h -----------------------------------------------*- 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
//
//===----------------------------------------------------------------------===//
///
/// \file
/// A BenchmarkRunner implementation to measure instruction latencies.
///
//===----------------------------------------------------------------------===//
#ifndef LLVM_TOOLS_LLVM_EXEGESIS_LATENCY_H
#define LLVM_TOOLS_LLVM_EXEGESIS_LATENCY_H
#include "BenchmarkRunner.h"
#include "Error.h"
#include "MCInstrDescView.h"
#include "SnippetGenerator.h"
namespace llvm {
namespace exegesis {
class LatencySnippetGenerator : public SnippetGenerator {
public:
using SnippetGenerator::SnippetGenerator;
~LatencySnippetGenerator() override;
Expected<std::vector<CodeTemplate>>
generateCodeTemplates(const Instruction &Instr,
const BitVector &ForbiddenRegisters) const override;
};
class LatencyBenchmarkRunner : public BenchmarkRunner {
public:
LatencyBenchmarkRunner(const LLVMState &State,
InstructionBenchmark::ModeE Mode);
~LatencyBenchmarkRunner() override;
private:
Expected<std::vector<BenchmarkMeasure>>
runMeasurements(const FunctionExecutor &Executor) const override;
};
} // namespace exegesis
} // namespace llvm
#endif // LLVM_TOOLS_LLVM_EXEGESIS_LATENCY_H
|