[Bug target/65474] sub-optimal code for __builtin_abs

[wmi at google dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65474

--- Comment #2 from wmi at google dot com ---
Created attachment 35069
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35069&action=edit
microbench