[Bug target/31170] cmpxchgq not emitted.

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=31170

--- Comment #3 from Andrew Pinski  ---
Note I think the volatile will block ifcvt from doing anything too.

The other thing is this thread safe for C++11/C11 memory models.  That is does
cmpxchgq do a store always or only when the compare is true and is that
guaranteed?

[Bug target/31170] cmpxchgq not emitted.

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=31170

Andrew Pinski  changed:

   What|Removed |Added

   Keywords||missed-optimization
   Severity|normal  |enhancement
  Component|rtl-optimization|target