[Webkit-unassigned] [Bug 193869] [BigInt] Support constant fold of BigInts on DFG

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=193869

Caio Lima <ticaiolima at gmail.com> changed:

           What    |Removed                     |Added
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           Assignee|webkit-unassigned at lists.web |ticaiolima at gmail.com
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--- Comment #2 from Caio Lima <ticaiolima at gmail.com> ---
Created attachment 360242

  --> https://bugs.webkit.org/attachment.cgi?id=360242&action=review

WIP - Patch

Here is a very simple version to illustrate what I have in mind now. I'm creating LazyBigIntValue to store required information to calculate BigInts properly. A LazyJSValue(NewBigInt) can have KnowValue or other LazyBigIntValue as operands. This enables us fold cascaded constants. The Folding is being done during Strengthreduction, following String rules as well.

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