https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96582
rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |rsandifo at gcc dot gnu.org Status|UNCONFIRMED |NEW Ever confirmed|0 |1 Last reconfirmed| |2020-08-12 --- Comment #1 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> --- We shouldn't need to change the patterns for correctness. I think this is a bug in tree-vect-generic, which seems to be using the byte size * 8 instead of the actual bit precision when generating the BIT_FIELD_REFs. This sounds similar to PR94980. See also PR96366#c1 for more about the SVE_FULL stuff.