[Bug tree-optimization/86530] Vectorization failure for a simple loop

[jiangning.liu at amperecomputing dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86530

--- Comment #1 from Jiangning Liu <jiangning.liu at amperecomputing dot com> ---
Created attachment 44396
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44396&action=edit
vectorization failure

Attached is -O3 result for aarch64, in which no vectorization code generated at
all.