[Bug target/96964] [nvptx] Implement __atomic_test_and_set

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96964

Tom de Vries <vries at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |11.0
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |FIXED

--- Comment #4 from Tom de Vries <vries at gcc dot gnu.org> ---
Patch committed, marking resolved-fixed.

Tested by libatomic testsuite, no test-case required.