http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46172
--- Comment #3 from Ira Rosen <irar at il dot ibm.com> 2010-11-02 13:11:48 UTC --- The vectorizer assumes that DCE will be applied after it, and not only in this case. I don't see why someone would want to use this combination of flags (-ftree-vectorize -fno-tree-dce). I think it is reasonable to automatically invoke DCE in case -ftree-vectorize is turned on. Ira
