[Webkit-unassigned] [Bug 146115] Web Inspector: visualize code hotness using basic block execution counts

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=146115

--- Comment #1 from Nikita Vasilyev <nvasilyev at apple.com> ---
> I'm a much bigger fan of small widgets in gutters (left side) ...

I’m willing to explore that option.

I have used Adobe Theseus (https://github.com/adobe-research/theseus#theseus) which adds call counters for every function. I find it very helpful to see numbers changing in realtime.

I haven’t used any software that adds a heat map overlay on top of code. I think it could be useful to give a quick glance of what happened. We already gray out unexecuted code and I find it very helpful. Heat maps could be an extension to that. 

I’ll make two prototypes: gutter highlight and heat maps. I’ll post them here for anyone to play around.

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