jsc benchmarks indicate that shrinking small Vectors doesn't slow things down much, but we'll probably save memory.
Created attachment 252065 [details] Patch
Created attachment 252066 [details] results of run-jsc-benchmarks
Comment on attachment 252065 [details] Patch Ok, let's do it. r=me
Comment on attachment 252065 [details] Patch Clearing flags on attachment: 252065 Committed r183661: <http://trac.webkit.org/changeset/183661>
All reviewed patches have been landed. Closing bug.
Re-opened since this is blocked by bug 144594
It is very strange that this increased memory usage, but the bot doesn't lie. We could look into this more closely, but that would require much more than this one-number change.