[Bug tree-optimization/85416] Massive performance regression when switching on "-march=native"

[martin@mpa-garching.mpg.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85416

--- Comment #4 from Martin Reinecke <martin@mpa-garching.mpg.de> ---
Created attachment 43956
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43956&action=edit
reduced test case