[Bug tree-optimization/100794] suboptimal code due to missing pre2 when vectorization fails

[linkw at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100794

--- Comment #8 from Kewen Lin <linkw at gcc dot gnu.org> ---
Created attachment 50896
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50896&action=edit
M1 M2 SPEC2017 P9 eval result