[Bug target/96898] [nvptx] libatomic support

[vries at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96898

--- Comment #8 from Tom de Vries <vries at gcc dot gnu.org> ---
Patch submitted:
https://gcc.gnu.org/pipermail/gcc-patches/2020-September/553393.html