https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114302
--- Comment #4 from Andrew Stubbs <ams at gcc dot gnu.org> --- Yes, that's what the simd-math-3* tests do. The simd-math-5* tests are explicitly supposed to be doing this in the context of the autovectorizer. If these tests are being compiled as (newly) intended then we should change the expected results. So, questions: 1. Are the new results actually correct? (So far I only know that being different is expected.) 2. Is there some other testcase form that would exercise the previously intended routines? 3. Is the new behaviour configurable? I don't think the 16-bit shift bug ever existed on GCN (in which "short" vectors actually have excess bits in each lane, much like scalar registers do).
