https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112661
--- Comment #14 from Richard Biener <rguenth at gcc dot gnu.org> --- (In reply to Richard Sandiford from comment #13) > In vect_create_constant_vectors, I think the uniform_elt needs > to come first, and needs to be used irrespective of whether the > number of elements is constant. The general tree_vector_builder > has a more general pattern than 1 duplicated element. can you take it from here since I have limited means to test?