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deps: V8: cherry-pick 548f6c81d424 #33484

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deps: V8: cherry-pick 548f6c81d424 #33484

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dominykas
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This seems to fix #32049. I'd like to see this applied to v12.x as well.

V8 issue: https://bugs.chromium.org/p/v8/issues/detail?id=10339 (seems to have landed in v8.4.279)

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: v8/v8@548f6c8

Checklist
  • make -j4 test (UNIX), or vcbuild test (Windows) passes
  • tests and/or benchmarks are included
  • documentation is changed or added
  • commit message follows commit guidelines

@dominykas
deps: V8: cherry-pick 548f6c81d424
bebc189 
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: v8/v8@548f6c8
@nodejs-github-bot nodejs-github-bot added build Issues and PRs related to build files or the CI. v8 engine Issues and PRs related to the V8 dependency. labels May 20, 2020
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nodejs-github-bot commented May 20, 2020 •
edited by addaleax
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CI: https://ci.nodejs.org/job/node-test-pull-request/31447/
V8 CI: https://ci.nodejs.org/job/node-test-commit-v8-linux/3123/

@dominykas dominykas marked this pull request as ready for review May 20, 2020 15:37
@addaleax addaleax added the author ready PRs that have at least one approval, no pending requests for changes, and a CI started. label May 20, 2020
mcollina
mcollina approved these changes May 20, 2020
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lgtm

BridgeAR pushed a commit to BridgeAR/node that referenced this pull request May 23, 2020
@dominykas @BridgeAR
deps: V8: cherry-pick 548f6c81d424
78eb420 
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: v8/v8@548f6c8

PR-URL: nodejs#33484
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Matheus Marchini <mat@mmarchini.me>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
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Landed in 78eb420 🎉

@BridgeAR BridgeAR closed this May 23, 2020
@dominykas dominykas deleted the fix-32049 branch May 23, 2020 15:59
dominykas added a commit to dominykas/node that referenced this pull request May 25, 2020
@dominykas
deps: V8: cherry-pick 548f6c81d424
2d9540e 
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: v8/v8@548f6c8

PR-URL: nodejs#33484
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Matheus Marchini <mat@mmarchini.me>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
@dominykas dominykas mentioned this pull request May 25, 2020
Closed
4 tasks
codebytere pushed a commit that referenced this pull request Jun 9, 2020
@dominykas @codebytere
deps: V8: cherry-pick 548f6c81d424
af95bd7 
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: v8/v8@548f6c8

PR-URL: #33484
Backport-PR-URL: #33553
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Matheus Marchini <mat@mmarchini.me>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
codebytere added a commit that referenced this pull request Jun 16, 2020
@codebytere
2020-06-16, Version 12.18.1 'Erbium' (LTS)
10c68cd 
Notable changes:

deps:
  * V8: cherry-pick 548f6c81d424 (Dominykas Blyžė) [#33484](#33484)
  * update to uvwasi 0.0.9 (Colin Ihrig) [#33445](#33445)
  * upgrade to libuv 1.38.0 (Colin Ihrig) [#33446](#33446)
  * upgrade npm to 6.14.5 (Ruy Adorno) [#33239](#33239)

PR-URL: #33811
@codebytere codebytere mentioned this pull request Jun 16, 2020
Merged
codebytere added a commit that referenced this pull request Jun 16, 2020
@codebytere
2020-06-17, Version 12.18.1 'Erbium' (LTS)
6665f73 
Notable changes:

deps:
  * V8: cherry-pick 548f6c81d424 (Dominykas Blyžė) [#33484](#33484)
  * update to uvwasi 0.0.9 (Colin Ihrig) [#33445](#33445)
  * upgrade to libuv 1.38.0 (Colin Ihrig) [#33446](#33446)
  * upgrade npm to 6.14.5 (Ruy Adorno) [#33239](#33239)

PR-URL: #33811
codebytere added a commit that referenced this pull request Jun 17, 2020
@codebytere
2020-06-17, Version 12.18.1 'Erbium' (LTS)
e9145db 
Notable changes:

deps:
  * V8: cherry-pick 548f6c81d424 (Dominykas Blyžė) [#33484](#33484)
  * update to uvwasi 0.0.9 (Colin Ihrig) [#33445](#33445)
  * upgrade to libuv 1.38.0 (Colin Ihrig) [#33446](#33446)
  * upgrade npm to 6.14.5 (Ruy Adorno) [#33239](#33239)

PR-URL: #33811
codebytere pushed a commit that referenced this pull request Jun 18, 2020
@dominykas @codebytere
deps: V8: cherry-pick 548f6c81d424
ca57dfa 
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: v8/v8@548f6c8

PR-URL: #33484
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Matheus Marchini <mat@mmarchini.me>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
codebytere pushed a commit that referenced this pull request Jun 18, 2020
@dominykas @codebytere
deps: V8: cherry-pick 548f6c81d424
748720e 
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: v8/v8@548f6c8

PR-URL: #33484
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Matheus Marchini <mat@mmarchini.me>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
@codebytere codebytere mentioned this pull request Jun 28, 2020
Merged
codebytere pushed a commit that referenced this pull request Jun 30, 2020
@dominykas @codebytere
deps: V8: cherry-pick 548f6c81d424
2f249ed 
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: v8/v8@548f6c8

PR-URL: #33484
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Matheus Marchini <mat@mmarchini.me>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
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@BridgeAR BridgeAR BridgeAR approved these changes

@mmarchini mmarchini mmarchini approved these changes

@cjihrig cjihrig cjihrig approved these changes

@addaleax addaleax addaleax approved these changes

@jasnell jasnell jasnell approved these changes

@mcollina mcollina mcollina approved these changes

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Performance regression when enumerating objects (for shallow cloning) v12.15.0 to v12.16.1
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@dominykas @nodejs-github-bot @BridgeAR @mcollina @jasnell @addaleax @cjihrig @mmarchini @MylesBorins