[Bug tree-optimization/68379] [6 Regression] BB vectorization: definition in block 13 follows the use for SSA_NAME

[su at cs dot ucdavis.edu]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68379

--- Comment #5 from Zhendong Su <su at cs dot ucdavis.edu> ---
(In reply to Markus Trippelsdorf from comment #4)
> *** Bug 68614 has been marked as a duplicate of this bug. ***

Sorry for the duplicate report, but hope the new C test case will be of use
nonetheless.