• Jakob Gruber's avatar
    [compiler] Remove MapData::SerializeElementsKindGeneralizations · d5b27bd2
    Jakob Gruber authored
    .. and the corresponding map cache.
    
    This cache was only used for CreateArray reductions, thus we mostly
    expect to see unmodified JSArray initial maps. These are already
    accessible from the native context and don't need to be cached
    separately.
    
    We may also see initial maps for custom JSArray subclasses. New map
    allocation may be necessary in this case if the requested elements
    kind differs from that of the current given initial map. Since we
    can't (easily) allocate on the background thread, we skip the
    optimization starting with this CL.
    
    Bug: v8:7790
    Change-Id: Ib8d81094e1572f49eda18e9ec485d317cec62473
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3021175Reviewed-by: 's avatarMichael Stanton <mvstanton@chromium.org>
    Commit-Queue: Jakob Gruber <jgruber@chromium.org>
    Auto-Submit: Jakob Gruber <jgruber@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#75719}
    d5b27bd2
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