Recompute handler

[pawel.b...@gmail.com]

I tried searching on the group, v8.dev, search engine... could someone give a short explanation on what recompute handler is (in terms of IC states), when it triggers and how is it different from Premonomorphic state?

In my case it seems to be triggered between Premonomorphic and monomorphic state - and I can't quite understand what that means.

Thanks,

Pawel

[Toon Verwaest]

This is a crutch to ensure we don't go poly/megamorphic in the case some assumptions have changed. We use it when e.g., someone modified the prototype chain of the current receiver. The map of the receiver isn't different from the map that we checked in the inline cache. Something else caused us to miss. The idea is that such changes hopefully happen fairly infrequently (properties are rarely added/deleted from objects on the prototype chain).

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[pawel.b...@gmail.com]

Oh ok, I understand, thanks! Is there some (hopefully relatively easy...) way to see what triggered recompute handler?