Optimize Map/Set.prototype.forEach
Instead of using an iterator result object and an entries array
(for Map) we introduce a new runtime function that uses an array
as an out param.
On the Map ForEach perf test this leads to a 2.5x performance
improvement. On the overall Map and Set tests this leads to a 18%
and 13% improvement respectively.
BUG=None
LOG=Y
R=danno@chromium.org
Review URL: https://codereview.chromium.org/
355663002
Patch from Erik Arvidsson <arv@chromium.org>.
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@22027
ce2b1a6d-e550-0410-aec6-
3dcde31c8c00