[Bug rtl-optimization/53533] [4.8/4.9/5/6 regression] vectorization causes loop unrolling test slowdown as measured by Adobe's C++Benchmark

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53533

--- Comment #27 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Created attachment 35448
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35448&action=edit
testcase