Tamar Christina <tamar.christ...@arm.com> writes: >> -----Original Message----- >> That said, I'm quite sure we don't want to have a dr->target_alignment >> that isn't power-of-two, so if the comput doesn't end up with a >> power-of-two value we should leave it as the target prefers and >> fixup (or fail) during vectorizable_load. > > Ack I'll round up to power of 2.
I don't think that's enough. Rounding up 3 would give 4, but a group size of 3 would produce vector iterations that start at 0, 3X, 6X, 9X, 12X for some X. [3X, 6X) and [6X, 9X) both straddle a 4X alignment boundary. Thanks, Richard
