NEW140805
Sink function allocations, and then the activation allocation, to a point where we know that let-bound variables are initialized - and then allow those functions' code to be optimized without TDZ checks 
https://bugs.webkit.org/show_bug.cgi?id=140805
Summary Sink function allocations, and then the activation allocation, to a point whe...
Filip Pizlo
Reported 2015-01-22 17:47:36 PST
The optimizing compiler already has the ability to sink allocations to the point where they escape. Doing this for activation and function allocations would enable us to prove cases where the function cannot see the TDZ of some let-bound variables.
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