[Bug tree-optimization/127452] [17 Regression] forwprop generates 128bit multiplication even if not supported by the target since r17-3437

[jakub at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127452

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
That said, the user could have written it that way by hand, so we should better
handle it instead of limiting the optimization.