• Kevin Babbitt's avatar
    Update inline cache after migrating deprecated map · 0c10dda4
    Kevin Babbitt authored
    Previously, when the Load IC saw a deprecated map, it would migrate to
    the new map but not update the feedback vector. This would lead to a
    deopt the next time the same object was seen.
    
    With this CL, the feedback vector will be updated to the target of the
    deprecated map. In order to do this, we need to mark the IC for
    recomputation. Without that call, the map and handler would look the
    same to IC::UpdatePolymorphicIC amd would decline to update, causing
    the IC to go megamorphic instead.
    
    Bug: v8:10816
    Change-Id: I0dcf97fb278bc0b167df6ce24d5db179f599f535
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3032983Reviewed-by: 's avatarMythri Alle <mythria@chromium.org>
    Commit-Queue: Kevin Babbitt <kbabbitt@microsoft.com>
    Cr-Commit-Position: refs/heads/master@{#76042}
    0c10dda4
ic-migrated-map-add-when-uninitialized.js 665 Bytes