http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51798
--- Comment #20 from David Edelsohn <dje at gcc dot gnu.org> 2012-01-27
14:27:25 UTC ---
Jonathan,
Your explanation in comment #16 does not fully explain the design of
libstdc++-v3. If the __sync_* intrinsics provide the complete abstraction for
CAS, what is the purpose of the custom implementations of atomicity.h in
libstdc++-v3/config/{cpu,os}/* ? One should not need those overrides if
__sync_* provides sufficient abstraction.
Jakub,
The patch is incomplete because it should update
src/libstdc++-v3/config/cpu/generic/atomicity_builtins/atomicity.h as well.
