• jgruber's avatar
    [regexp] Port RegExp.prototype.exec to TurboFan · db99bdff
    jgruber authored
    This ports RegExp.prototype.exec to a TurboFan builtin.
    
    LastMatchInfo is now stored on the context in order to be able to access
    it from the stub.
    
    Unmodified RegExp instances go through a fast path of accessing the
    lastIndex property as an in-object field, while modified instances call
    into runtime for lastIndex loads and stores.
    
    Octane/regexp shows slight improvements (between 0 and 5%) with this CL.
    
    BUG=v8:5339
    
    Review-Url: https://codereview.chromium.org/2375953002
    Cr-Commit-Position: refs/heads/master@{#39899}
    db99bdff
code-assembler.cc 40.8 KB