http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53645
--- Comment #4 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-06-13 09:46:19 UTC --- (In reply to comment #2) > I think we've talked about enhancing the pattern recognizer to expand it as > mult at the tree level, reusing parts of the expander code for that. I > believe > I've looked at it, but can't find any patch (I think it was around mid > December > when > sdivmod pattern recognizer has been added). I'll look at it again. Note that this is already vector form in source, so enhancing the pattern recognizer would only help for PR51581. I think we want to move synth_mult / expand_divmod to the tree level or make its worker IL independent (possibly with using appropriate costs for vector vs. scalar during vector lowering).
