• bmeurer's avatar
    [turbofan] Add appropriate types to express Callable. · 777e142c
    bmeurer authored
    This introduces three new types OtherCallable, CallableProxy (and OtherProxy),
    and BoundFunction to make it possible to express Callable in the Type system.
    It also forces all undetectable receivers to be Callable, which matches the
    use case for undetectable, namely document.all (guarded by proper checks and
    tests).
    
    It also uses these new types to properly optimize instanceof (indirectly via
    OrdinaryHasInstance) based on the type of the constructor and the object. So
    we are able to constant-fold certain instanceof expressions based on types
    and completely avoid the builtin call.
    
    R=jarin@chromium.org
    BUG=v8:5267
    
    Review-Url: https://codereview.chromium.org/2535753004
    Cr-Commit-Position: refs/heads/master@{#41345}
    777e142c
instanceof-opt1.js 579 Bytes