[Bug middle-end/116926] [15 Regression] Recent changes in dot-product causing ICE on c6x port

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116926

--- Comment #7 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Actually it is simplier than that:
-      limit_mode = from_mode;
+      limit_mode = GET_MODE_NEXT_MODE (from_mode).require ();