[Bug tree-optimization/123002] [15 regression] WIDEN_MULT_EXPR are incorrectly vectorized since r15-3189-gd3e71b99194bff

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123002

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[15/16 regression]          |[15 regression]
                   |WIDEN_MULT_EXPR are         |WIDEN_MULT_EXPR are
                   |incorrectly vectorized      |incorrectly vectorized
                   |since                       |since
                   |r15-3189-gd3e71b99194bff    |r15-3189-gd3e71b99194bff
      Known to work|                            |16.0

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed on trunk sofar.  I have verified the fix also works on the branch, will
backport after a few days of burn-in.