[Bug tree-optimization/42286] October 23rd change to tree-ssa-pre.c breaks calculix on powerpc with -ffast-math

[rguenth at gcc dot gnu dot org]

------- 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?


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42286