[Bug tree-optimization/66642] transform_to_exit_first_loop_alt doesn't use result of low iteration count loop

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66642

--- Comment #2 from vries at gcc dot gnu.org ---
Created attachment 35842
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35842&action=edit
[1/2] Tentative patch