[Bug c/120162] Prefetch causes vectorization to fail

[viktor.horsmanheimo at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120162

--- Comment #1 from Viktor Horsmanheimo <viktor.horsmanheimo at gmail dot com> 
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Created attachment 61354
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=61354&action=edit
PoC in c++