• Georg Neis's avatar
    Reland "[compiler] Directly read PropertyCells" · cf7cba8d
    Georg Neis authored
    This reverts commit 87df0b7e (thus
    relands 42cd9eb7), with fixes for
    the discovered issues.
    
    Original change's description:
    > Revert "[compiler] Directly read PropertyCells"
    >
    > This reverts commit 42cd9eb7.
    >
    > Reason for revert: Clusterfuzz issues, e.g.
    > https://bugs.chromium.org/p/chromium/issues/detail?id=1176318
    >
    > Original change's description:
    > > [compiler] Directly read PropertyCells
    > >
    > > Main changes:
    > >
    > > - Introduce a new broker data kind kBackgroundSerialized for objects
    > >   that can be serialized in the background (when direct reads are on).
    > >   (I'm planning to remove kPossiblyBackgroundSerialized in a followup,
    > >   in favor of a dynamic choice of kSerialized or kBackgroundSerialized).
    > > - Make PropertyCell use that new kind.
    > > - Introduce a bottleneck in runtime code for changes to PropertyCells
    > >   and make sure that a certain protocol is followed that allows
    > >   concurrent reads from the background thread.
    > > - Improve interface of PropertyCell in various ways.
    > >
    > > Bug: v8:7790
    > > Change-Id: If3d7926c3b894808811348b4b2bed153f5c06897
    > > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2661462
    > > Reviewed-by: Toon Verwaest <verwaest@chromium.org>
    > > Reviewed-by: Ulan Degenbaev <ulan@chromium.org>
    > > Reviewed-by: Nico Hartmann <nicohartmann@chromium.org>
    > > Commit-Queue: Georg Neis <neis@chromium.org>
    > > Cr-Commit-Position: refs/heads/master@{#72586}
    >
    > TBR=ulan@chromium.org,neis@chromium.org,verwaest@chromium.org,nicohartmann@chromium.org
    >
    > Change-Id: Id04145760c49fa379bc5a3fc16eba664025a9180
    > Bug: v8:7790
    > Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2685125
    > Reviewed-by: Georg Neis <neis@chromium.org>
    > Commit-Queue: Georg Neis <neis@chromium.org>
    > Cr-Commit-Position: refs/heads/master@{#72619}
    
    Bug: v8:7790, chromium:1176509, chromium:1176318, chromium:1176504
    Change-Id: Icaf285912bb948432a4a2d599cd174f6a5aa296e
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2685166Reviewed-by: 's avatarGeorg Neis <neis@chromium.org>
    Reviewed-by: 's avatarIgor Sheludko <ishell@chromium.org>
    Reviewed-by: 's avatarMichael Stanton <mvstanton@chromium.org>
    Reviewed-by: 's avatarUlan Degenbaev <ulan@chromium.org>
    Reviewed-by: 's avatarNico Hartmann <nicohartmann@chromium.org>
    Commit-Queue: Georg Neis <neis@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#72697}
    cf7cba8d
js-typed-lowering.cc 98.6 KB