• ynovikov's avatar
    Reland of [typedarrays] remove invalid optimization in NAMEConstructor()... · f5cb17a8
    ynovikov authored
    Reland of [typedarrays] remove invalid optimization in NAMEConstructor() (patchset #1 id:1 of https://codereview.chromium.org/2548583003/ )
    
    Reason for revert:
    The bot was not affected by the revert. Speculation was wrong.
    
    Original issue's description:
    > Revert of [typedarrays] remove invalid optimization in NAMEConstructor() (patchset #1 id:1 of https://codereview.chromium.org/2544503002/ )
    >
    > Reason for revert:
    > Speculative revert for causing timeouts on Win Debug gpu fyi bot
    >
    > Nothing else looks even remotely relevant in the list of changes.
    > Will reland if this doesn't fix the issues.
    >
    > BUG=670396
    >
    > Original issue's description:
    > > [typedarrays] remove invalid optimization in NAMEConstructor()
    > >
    > > Before, we were treating objects with the builtin ArrayValues iterator
    > > method as array-like, where the iterator would iterate through to the
    > > full length of the object.
    > >
    > > This optimization was not sound, because it does not ensure that the
    > > next method hasn't been modified. Even if it hasn't been modified,
    > > it's entirely possible to be modified during iteration. Thus, this
    > > optimization has been removed due to its observability.
    > >
    > > BUG=v8:5699
    > > R=littledan@chromium.org, cbruni@chromium.org
    > >
    > > Committed: https://crrev.com/77df8c67d9609ada3b7d79e8e6d33f198bbad5a1
    > > Cr-Commit-Position: refs/heads/master@{#41394}
    >
    > TBR=cbruni@chromium.org,littledan@chromium.org,caitp@igalia.com
    > # Not skipping CQ checks because original CL landed more than 1 days ago.
    > BUG=v8:5699
    >
    > Committed: https://crrev.com/0ea4a542202d501c4e550474e89512532571f3a0
    > Cr-Commit-Position: refs/heads/master@{#41461}
    
    TBR=cbruni@chromium.org,littledan@chromium.org,caitp@igalia.com,enne@chromium.org
    # Not skipping CQ checks because original CL landed more than 1 days ago.
    BUG=670396
    
    Review-Url: https://codereview.chromium.org/2553873002
    Cr-Commit-Position: refs/heads/master@{#41504}
    f5cb17a8
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