1a2362089c
We cannot skip the @@hasInstance lookup in instanceof depending on a global protector cell, as the lookup of the property is observable via proxies or accessors. So remove the global protector and properly implement CSA::InstanceOf via GetPropertyStub, with an appropriate fast-path for Function.prototype[@@hasInstance] where we call the builtin code object directly if the function matches, skipping all the checks from the call sequence, and also avoid the redundant ToBoolean conversion on the result. R=yangguo@chromium.org TBR=ulan@chromium.org BUG=v8:5958 Review-Url: https://codereview.chromium.org/2684033012 Cr-Commit-Position: refs/heads/master@{#43137} |
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| benchmarks | ||
| cctest | ||
| common | ||
| debugger | ||
| fuzzer | ||
| inspector | ||
| intl | ||
| js-perf-test | ||
| memory | ||
| message | ||
| mjsunit | ||
| mozilla | ||
| preparser | ||
| promises-aplus | ||
| simdjs | ||
| test262 | ||
| unittests | ||
| webkit | ||
| bot_default.gyp | ||
| bot_default.isolate | ||
| BUILD.gn | ||
| default.gyp | ||
| default.isolate | ||
| optimize_for_size.gyp | ||
| optimize_for_size.isolate | ||
| perf.gyp | ||
| perf.isolate | ||