[Bug tree-optimization/126433] [17 Regression] 4% slowdown of imagick_r on Zen5 since r17-2486-g60b27d915e1474

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126433

Uroš Bizjak <ubizjak at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|                            |2026-07-27
             Status|UNCONFIRMED                 |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |ubizjak at gmail dot com
     Ever confirmed|0                           |1

--- Comment #1 from Uroš Bizjak <ubizjak at gmail dot com> ---
Created attachment 65143
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=65143&action=edit
Patch in testing.

Apparently targets other than Pentium4 do not like XCHGB.