https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68537
--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> --- (In reply to Florian Weimer from comment #6) > (In reply to Markus Trippelsdorf from comment #5) > > > Ok. Well, I'm running GHC version 7.10.2, which is the latest. > > (Not sure how to report this issue to the ghc folks). > > To be honest, if Richard thinks there is a GCC bug here (and I read comment > #4 this way), he's likely right and I'm wrong. No, I just assumed it is a bug because Markus inspected the assembler and analyzed it to be broken. I just verified it is all well from vectorization to RTL expansion.