[Bug rtl-optimization/91154] [10 Regression] 456.hmmer regression on Haswell caused by r272922

[wschmidt at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91154

--- Comment #18 from Bill Schmidt <wschmidt at gcc dot gnu.org> ---
Richi corrected me -- this is not vectorization, but use of SSE on lane zero to
do scalar computation.