optimization/4714: Haney's real matrix performance regression

[Paolo Carlini]

rth@gcc.gnu.org wrote:

>     Somehow we're not recognizing *any* givs.
>
Hi!

What will you think of me if I blatantly confess to have /no idea/ what 
a "giv" is? :-(
(I would like to learn more, however)

Anyway, this should be fixed somehow for 3.2, since it looks like it was 
basically due to weak C++ alias analysis... Dunno if the "givs" issue is 
orthogonal to this one, or whatever...

Thanks, Paolo.

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=4714