------- Comment #2 from meissner at linux dot vnet dot ibm dot com 2009-12-04 21:28 ------- Subject: Re: October 23rd change to tree-ssa-pre.c breaks calculix on powerpc with -ffast-math
On Fri, Dec 04, 2009 at 09:18:45PM -0000, rguenth at gcc dot gnu dot org wrote: > > > ------- Comment #1 from rguenth at gcc dot gnu dot org 2009-12-04 21:18 > ------- > This change merely turns off PRE in cold code regions. So if -fno-tree-pre > breaks calculix for you I'd guess some later optimization manages to > miscompile it (my guess: the vectorizer). > > What options do you build calculix with? -m32 -O3 -mcpu=power5 -ffast-math -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42286
