• Benedikt Meurer's avatar
    [turbofan] Restore fast API calls with no receiver knowledge. · 663ebdb1
    Benedikt Meurer authored
    When TurboFan doesn't know anything about the receiver, it will
    generally insert a call via CallFunctionTemplate builtin, which
    does all the necessary checks. For this we don't need to be able
    to deoptimize, so there's no need to have the speculation bit
    available.
    
    This restores the performance in the case of calling API methods
    and accessors via `Function#call()`, i.e. like in this example:
    
    ```js
    const hasAttribute = Element.prototype.hasAttribute;
    // ...
    hasAttribute.call(element, "bar");
    ```
    
    Bug: v8:8820
    Change-Id: Ic30719d7db75141023efc11d76180b001f871d28
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1615248
    Auto-Submit: Benedikt Meurer <bmeurer@chromium.org>
    Commit-Queue: Georg Neis <neis@chromium.org>
    Reviewed-by: 's avatarGeorg Neis <neis@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#61604}
    663ebdb1
js-call-reducer.cc 291 KB