[Webkit-unassigned] [Bug 151596] [JSC] add missing RequireObjectCoercible() step in destructuring

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=151596

Caitlin Potter (:caitp) <caitp at igalia.com> changed:

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 Attachment #266330|                            |review?
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--- Comment #4 from Caitlin Potter (:caitp) <caitp at igalia.com> ---
Created attachment 266330
  --> https://bugs.webkit.org/attachment.cgi?id=266330&action=review
[JSC] add missing RequireObjectCoercible() step in destructuring

Added some new opcodes (op_is_just_undefined and op_is_just_undefined_or_null) which remove the unnecessary masquerade-as-undefined code. Probably missing some bit here or there. Few more tests for more object-coercible types

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