Updates:
Cc: [email protected]
Comment #1 on issue 3826 by [email protected]: Hydrogenized array growth
stub poorly handles very large arrays
https://code.google.com/p/v8/issues/detail?id=3826
I did a bit of digging and found the CL that _really_ changed the behavior.
https://codereview.chromium.org/674913002
So we used to patch in generic stub and it still handled growth too but now
we patching generic stub that handles nothing. And that's where it went 10x
slower.
r24940 [before CL]
$ d8 test.js
411
r24941 [after CL]
$ d8 test.js
3738
Interestingly before CL state is still 10% slower than what it used to be
at r24285:
$ d8 test.js
370
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