[Bug tree-optimization/107502] GCC fails to detect foo(first_const,last)-first_const+first pattern

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107502

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to cqwrteur from comment #4)
> (In reply to Andrew Pinski from comment #3)
> > I filed PR 107503 with the reduced testcase for the test2 case (after having
> > fixed the return issue).
> 
> sorry about that. it should be vector case
> https://godbolt.org/z/f9TYMxb7c

Right, PR 107503 has the reduced testcase for your vector (test2 function)
testcase.