[Bug middle-end/66867] Suboptimal code generation for atomic_compare_exchange

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66867

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #38740|0                           |1
        is obsolete|                            |
             Status|NEW                         |ASSIGNED
           Assignee|unassigned at gcc dot gnu.org      |jakub at gcc dot gnu.org

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 38749
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38749&action=edit
gcc7-pr66867.patch

Patch I'm going to bootstrap/regtest.