https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94556
--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> --- (In reply to H.J. Lu from comment #1) > It is caused by r10-2846: > > commit bc4aa158c9490e76573bee3eec90f893b7d0b1ae > Author: Uros Bizjak <ubiz...@gmail.com> > Date: Wed Aug 28 17:09:51 2019 +0200 > > * config/i386/i386-features.c > (general_scalar_chain::compute_convert_gain): > Correct cost for double-word shifts. > (general_scalar_to_vector_candidate_p): Reject count operands > greater or equal to mode bitsize. > > From-SVN: r274994 This isn't the real cause. The bug is somewhere else.
