[webkit-reviews] review requested: [Bug 160921] TryGetById should have a ValueProfile so that it can predict its output type : [Attachment 286907] Updated patch, still WIP on tests

[bugzilla-daemon at webkit.org]

JF Bastien <jfbastien at apple.com> has asked  for review:
Bug 160921: TryGetById should have a ValueProfile so that it can predict its
output type
https://bugs.webkit.org/show_bug.cgi?id=160921

Attachment 286907: Updated patch, still WIP on tests

https://bugs.webkit.org/attachment.cgi?id=286907&action=review