[webkit-reviews] review requested: [Bug 30186] Optimization: Many StringImpl transformations are no-ops and should just return 'this' : [Attachment 40917] patch

[bugzilla-daemon at webkit.org]

Jens Alfke <snej at chromium.org> has asked  for review:
Bug 30186: Optimization: Many StringImpl transformations are no-ops and should
just return 'this'
https://bugs.webkit.org/show_bug.cgi?id=30186

Attachment 40917: patch
https://bugs.webkit.org/attachment.cgi?id=40917&action=review

------- Additional Comments from Jens Alfke <snej at chromium.org>
Here's the patch. Note that I added a comment to upper() explaining why it
isn't optimized the way lower() is.