Mathias Bynens 2c7c8da127 [js-perf-test] Add String#{starts,ends}With micro-benchmark ... This patch adds a micro-benchmark comparing `string.startsWith(singleCodeUnit)`, `string[0]`, `string.endsWith(singleCodeUnit)`, and `string[string.length - 1]`. The benchmark can be used to measure any String#{starts,ends}With optimizations we implement in the future. Test: tools/run_perf.py --binary-override-path=out/x64.release/d8 \ --filter=JSTests/Strings/StringStartsEndsWithComparison \ --extra-flags=--trace-turbo test/js-perf-test/JSTests.json Bug: v8:7453 Change-Id: I68cad197fbcbfc6b1938fc437776c319ee9f81df Reviewed-on: https://chromium-review.googlesource.com/1011619 Reviewed-by: Benedikt Meurer <bmeurer@chromium.org> Commit-Queue: Mathias Bynens <mathias@chromium.org> Cr-Commit-Position: refs/heads/master@{#52589}		2018-04-13 09:36:29 +00:00
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harmony-string.js	[js-perf-test] Add regression benchmark	2018-03-01 13:52:44 +00:00
run.js	[js-perf-tests] Add substring perf tests	2018-02-28 13:03:57 +00:00
string-indexof.js	[js-perf-tests] Add substring perf tests	2018-02-28 13:03:57 +00:00
string-matchall.js	[js-perf-test] Add benchmark for String.prototype.matchAll	2018-04-10 12:47:33 +00:00
string-startsendswith-comp.js	[js-perf-test] Add String#{starts,ends}With micro-benchmark	2018-04-13 09:36:29 +00:00
string-stringat-comp.js	[js-perf-test] Add micro-benchmark for StringAt functions	2018-03-09 12:43:36 +00:00
string-stringat.js	[js-perf-tests] Add substring perf tests	2018-02-28 13:03:57 +00:00
string-substring.js	[js-perf-tests] Add substring perf tests	2018-02-28 13:03:57 +00:00