• yangguo's avatar
    [serializer] do not copy code if snapshot is not required to be deterministic. · 5a88c047
    yangguo authored
    Code in V8 embeds memory addresses. Upon deserialization, those addresses will
    be updated anyways, so it's not important whether the serializer records those
    addresses. In order to have a deterministic build, we create a copy of the code
    and null out memory addresses and serialize this copy.
    
    For the code cache, we do not care about determinism. By avoiding the copy we
    can save some time spent on serialization. For the mandreel script in Octane,
    this reduces the serialization time from ~85ms to ~75ms.
    
    R=vogelheim@chromium.org
    
    Review-Url: https://codereview.chromium.org/1991033003
    Cr-Commit-Position: refs/heads/master@{#36350}
    5a88c047
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