[Bug target/1078] Problems with attributes documentation

[sandra at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=1078

--- Comment #9 from sandra at gcc dot gnu.org ---
"no_stack_limit" is documented now.

I've proposed deleting "com_interface", as it's been obsolete since 2001:
https://gcc.gnu.org/ml/gcc-patches/2016-01/msg00011.html

It looks like the only target-inspecific attributes missing documentation are
the transactional memory attributes.  I filed a separate issue (PR 69115) for
that since it requires clarification from the experts on that feature.

I have not reviewed the state of the target-specific attribute documentation
yet.