[Bug tree-optimization/57124] 254.gap@spec2000 got miscompare after r198413

[law at redhat dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57124

--- Comment #4 from Jeffrey A. Law <law at redhat dot com> 2013-05-07 04:25:27 UTC ---
Yea, 254.gap is definitely overflowing signed types.  I've got changes to make
the warnings and -fno-strict-overflow work that I'll put through their paces
tomorrow.

I think we should twiddle the testcase to verify we don't muck it up when 
-fno-strict-overflow is active.