https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71231
--- Comment #14 from Uroš Bizjak <ubizjak at gmail dot com> --- (In reply to rguent...@suse.de from comment #13) > On Tue, 24 May 2016, glisse at gcc dot gnu.org wrote: > > > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71231 > > > > --- Comment #12 from Marc Glisse <glisse at gcc dot gnu.org> --- > > -fwrapv seems to fix it. As far as I can tell, the multiplication is done > > in 32 > > bits, VRP detects that the numbers are nonnegative, so zeroing the sign bit > > of > > the result of the mult+add can be assumed to be a NOP. > > Anyone have a patch to rnflow that I can apply to the tester(s) to fix > the issue? BTW: The log file at [1] seems corrupted after "protein" report, it doesn't report "rnflow" failure at all. [1] http://gcc.opensuse.org/c++bench/pb11/pb11-performance-latest
