https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91351
--- Comment #1 from fiesh at zefix dot tv ---
commit 37db4f8d72cfc87716a729b38aa2f42097cdbf1f
Author: glisse <glisse@138bc75d-0d04-0410-961f-82ee72b054a4>
Date: Tue Oct 2 14:55:39 2018 +0000
No a*x+b*x factorization for signed vectors
2018-10-02 Marc Glisse <marc.gli...@inria.fr>
PR middle-end/87319
* fold-const.c (fold_plusminus_mult_expr): Handle complex and
vectors.
* tree.c (signed_or_unsigned_type_for): Handle complex.
