http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48580
--- Comment #18 from Zack Weinberg <zackw at panix dot com> 2013-02-02 21:59:37 UTC --- I find it a little disappointing that what should have been a straightforward additional optimization has gotten totally derailed into bikeshedding of an enormous class of builtins which seem unlikely ever to gain any traction. I just want the code in the original bug report to be optimized. That would be enough.
