• Georg Neis's avatar
    [bigint] Make competing read/write operations on bitfield atomic. · f28a7533
    Georg Neis authored
    GC needs to be able to read a bigint's length while the main thread may
    change the length and the sign (bigints are intentionally mutable as
    long as they haven't escaped to user code). Since both values are stored
    in the same bitfield, we need to make these accesses atomic.
    
    Also change right-trimming to not insert a filler when the object is
    in large object space (it makes no sense there).
    
    Bug: v8:8440
    Change-Id: I72a1b6f1eda54566d3cfad554dda1a98ddd61975
    Reviewed-on: https://chromium-review.googlesource.com/c/1337737
    Commit-Queue: Georg Neis <neis@chromium.org>
    Reviewed-by: 's avatarUlan Degenbaev <ulan@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#57576}
    f28a7533
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