[Bug tree-optimization/84859] [8 Regression] bogus -Warray-bounds on a memcpy in a loop

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84859

--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 43674
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43674&action=edit
patch

Final patch I am testing.