• Martin Bidlingmaier's avatar
    [regexp] Use experimental engine if backtrack limit exceeded · d4febb6b
    Martin Bidlingmaier authored
    We fall back from irregexp to the experimental engine if a backtrack
    limit is exceeded and the experimental engine can handle the regexp.
    The feature can be turned on with a boolean flag, and an uint-valued
    flag controls the default backtrack limit.  For regexps that are
    constructed with an explicit backtrack limit (API,
    %NewRegExpWithBacktrackLimit), we choose the lower of the explicit and
    default backtrack limits.
    The default backtrack limit does not apply to regexps that can't be
    handled by the experimental engine, and for such regexps an explicitly
    specified backtrack limit is handled as before by returning null if we
    exceed it.
    
    Cq-Include-Trybots: luci.v8.try:v8_linux64_fyi_rel_ng
    Bug: v8:10765
    Change-Id: I580df79bd847520985b6c2c2159bc427315c89d1
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2436341
    Commit-Queue: Martin Bidlingmaier <mbid@google.com>
    Reviewed-by: 's avatarJakob Gruber <jgruber@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#70500}
    d4febb6b
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