[webkit-reviews] review requested: [Bug 63662] DFG JIT does not do put_by_id transition caching. : [Attachment 99161] the patch

[bugzilla-daemon at webkit.org]

Filip Pizlo <fpizlo at apple.com> has asked  for review:
Bug 63662: DFG JIT does not do put_by_id transition caching.
https://bugs.webkit.org/show_bug.cgi?id=63662

Attachment 99161: the patch
https://bugs.webkit.org/attachment.cgi?id=99161&action=review

------- Additional Comments from Filip Pizlo <fpizlo at apple.com>
This patch takes us from a 20% slow-down in v8-raytrace to a 4% speed-up on
v8-raytrace.  We no longer have large regressions on any v8 benchmark (all v8
benchmarks are now speed-ups, no effect, or <5% slowdowns).