[Bug middle-end/101596] vect_recog_mulhs_pattern could use incorrect precision to check shift count

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101596

--- Comment #2 from Kewen Lin <linkw at gcc dot gnu.org> ---
Created attachment 51200
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51200&action=edit
Untested patch

Still need test cases to be added.