Latency.h
1.48 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
//===-- 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