Files
carbon-lang/toolchain/lex/string_literal_benchmark.cpp
T
Chandler Carruth b8802035ed Switch benchmarks to match unit test namespacing. (#3268)
Specifically, rather than nesting them in `Carbon::Testing`, nest them
in `Carbon::Foo` for whatever component they're benchmarking. All our
current benchmarks are lexer benchmarks so its `Carbon::Lex`.

This makes even more sense for benchmarks than unittests I think.
2023-10-05 17:44:31 +00:00

119 lines
3.5 KiB
C++

// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#include <benchmark/benchmark.h>
#include "toolchain/diagnostics/null_diagnostics.h"
#include "toolchain/lex/string_literal.h"
namespace Carbon::Lex {
namespace {
static void BM_ValidString(benchmark::State& state, std::string_view introducer,
std::string_view terminator) {
std::string x(introducer);
x.append(100000, 'a');
x.append(terminator);
for (auto _ : state) {
StringLiteral::Lex(x);
}
}
static void BM_ValidString_Simple(benchmark::State& state) {
BM_ValidString(state, "\"", "\"");
}
static void BM_ValidString_Multiline(benchmark::State& state) {
BM_ValidString(state, "'''\n", "\n'''");
}
static void BM_ValidString_MultilineDoubleQuote(benchmark::State& state) {
BM_ValidString(state, "\"\"\"\n", "\n\"\"\"");
}
static void BM_ValidString_Raw(benchmark::State& state) {
BM_ValidString(state, "#\"", "\"#");
}
BENCHMARK(BM_ValidString_Simple);
BENCHMARK(BM_ValidString_Multiline);
BENCHMARK(BM_ValidString_MultilineDoubleQuote);
BENCHMARK(BM_ValidString_Raw);
static void BM_IncompleteWithRepeatedEscapes(benchmark::State& state,
std::string_view introducer,
std::string_view escape) {
std::string x(introducer);
// Aim for about 100k to emphasize escape parsing issues.
while (x.size() < 100000) {
x.append("key: ");
x.append(escape);
x.append("\"");
x.append(escape);
x.append("\"");
x.append(escape);
x.append("n ");
}
for (auto _ : state) {
StringLiteral::Lex(x);
}
}
static void BM_IncompleteWithEscapes_Simple(benchmark::State& state) {
BM_IncompleteWithRepeatedEscapes(state, "\"", "\\");
}
static void BM_IncompleteWithEscapes_Multiline(benchmark::State& state) {
BM_IncompleteWithRepeatedEscapes(state, "'''\n", "\\");
}
static void BM_IncompleteWithEscapes_MultilineDoubleQuote(
benchmark::State& state) {
BM_IncompleteWithRepeatedEscapes(state, "\"\"\"\n", "\\");
}
static void BM_IncompleteWithEscapes_Raw(benchmark::State& state) {
BM_IncompleteWithRepeatedEscapes(state, "#\"", "\\#");
}
BENCHMARK(BM_IncompleteWithEscapes_Simple);
BENCHMARK(BM_IncompleteWithEscapes_Multiline);
BENCHMARK(BM_IncompleteWithEscapes_MultilineDoubleQuote);
BENCHMARK(BM_IncompleteWithEscapes_Raw);
static void BM_SimpleStringValue(benchmark::State& state,
std::string_view introducer,
std::string_view terminator) {
std::string x(introducer);
x.append(100000, 'a');
x.append(terminator);
for (auto _ : state) {
StringLiteral::Lex(x)->ComputeValue(NullDiagnosticEmitter<const char*>());
}
}
static void BM_SimpleStringValue_Simple(benchmark::State& state) {
BM_SimpleStringValue(state, "\"", "\"");
}
static void BM_SimpleStringValue_Multiline(benchmark::State& state) {
BM_SimpleStringValue(state, "'''\n", "\n'''");
}
static void BM_SimpleStringValue_MultilineDoubleQuote(benchmark::State& state) {
BM_SimpleStringValue(state, "\"\"\"\n", "\n\"\"\"");
}
static void BM_SimpleStringValue_Raw(benchmark::State& state) {
BM_SimpleStringValue(state, "#\"", "\"#");
}
BENCHMARK(BM_SimpleStringValue_Simple);
BENCHMARK(BM_SimpleStringValue_Multiline);
BENCHMARK(BM_SimpleStringValue_MultilineDoubleQuote);
BENCHMARK(BM_SimpleStringValue_Raw);
} // namespace
} // namespace Carbon::Lex