http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51895
--- Comment #10 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2012-01-19 16:13:55 UTC --- > I wonder why it does this, instead of just using type S, and if it really has > to for some reason, why it can't at least make sure it has the same TYPE_MODE. > Changing a TImode argument to a BLKmode argument doesn't look at least like a > good optimization. I concur, BLKmode means spilling to memory at some point, so this looks like a clear pessimization to me.
