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Zhang, Shiyu authored
This is a reland of 5253d7bf Original change's description: > [runtime] Cache prototype chain enumerable keys in PrototypeInfo > > This CL adds a prototype_chain_enum_cache to cache the enumeration of a > prototype and its entire chain on the PrototypeInfo. It can improve for-in > performance via simply merging the receiver enumeration with this cache. > > It improves the score of JetStream2-tagcloud-SP case by ~9% on IA Chromebook. > > Contributed by tao.pan@intel.com > > Change-Id: Ib40bfe41e772672337155584672f06fa1ba1e70d > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1870844 > Commit-Queue: Shiyu Zhang <shiyu.zhang@intel.com> > Reviewed-by: Toon Verwaest <verwaest@chromium.org> > Cr-Commit-Position: refs/heads/master@{#65224} Change-Id: I93b74727c46abbaab163324c50fbd977fcc9bb36 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1955232Reviewed-by: Toon Verwaest <verwaest@chromium.org> Commit-Queue: Shiyu Zhang <shiyu.zhang@intel.com> Cr-Commit-Position: refs/heads/master@{#65377}
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