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78eb420fed
Original commit message:
[runtime] Don't track transitions for certainly detached maps
Previously such maps were marked as prototype, but that has bad
performance / memory characteristics if objects are used as
dictionaries.
Bug: b:148346655, v8:10339
Change-Id: I287c5664c8b7799a084669aaaffe3affcf73e95f
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2179322
Reviewed-by: Igor Sheludko <ishell@chromium.org>
Commit-Queue: Toon Verwaest <verwaest@chromium.org>
Cr-Commit-Position: refs/heads/master@{#67537}
Refs:
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acorn | ||
acorn-plugins | ||
brotli | ||
cares | ||
histogram | ||
icu-small | ||
llhttp | ||
nghttp2 | ||
node-inspect | ||
npm | ||
openssl | ||
uv | ||
uvwasi | ||
v8 | ||
zlib |