Hi Tom, I would like this patch merged into 3.7.1. Marshall can you please approve this?
/Eric On Tue, Sep 22, 2015 at 12:55 PM, Dimitry Andric via cfe-commits <cfe-commits@lists.llvm.org> wrote: > Author: dim > Date: Tue Sep 22 13:55:37 2015 > New Revision: 248313 > > URL: http://llvm.org/viewvc/llvm-project?rev=248313&view=rev > Log: > Add placeholder __libcpp_relaxed_store() for when atomic builtins are not > available. > > Summary: > In rL241532, atomic_support.h was added, which provides handling of > atomic operations for libc++. When atomic builtins are not available, > it emits a warning about being unsupported, but it still provides a > number of stubs for the required functions. > > However, it misses a stub for `__libcpp_relaxed_store()`. Add it, by > using the same implementation as for `__libcpp_atomic_store()`. > > (Note that I encountered this on arm-freebsd, which still defaults to > armv4, and does not have the runtime libcalls to support atomic > builtins. For now, I have simply disabled using them.) > > Reviewers: mclow.lists, EricWF > > Subscribers: theraven, cfe-commits, jroelofs, majnemer, aemerson > > Differential Revision: http://reviews.llvm.org/D13051 > > Modified: > libcxx/trunk/src/include/atomic_support.h > > Modified: libcxx/trunk/src/include/atomic_support.h > URL: > http://llvm.org/viewvc/llvm-project/libcxx/trunk/src/include/atomic_support.h?rev=248313&r1=248312&r2=248313&view=diff > ============================================================================== > --- libcxx/trunk/src/include/atomic_support.h (original) > +++ libcxx/trunk/src/include/atomic_support.h Tue Sep 22 13:55:37 2015 > @@ -103,6 +103,13 @@ void __libcpp_atomic_store(_ValueType* _ > *__dest = __val; > } > > +template <class _ValueType, class _FromType> > +inline _LIBCPP_INLINE_VISIBILITY > +void __libcpp_relaxed_store(_ValueType* __dest, _FromType __val) > +{ > + *__dest = __val; > +} > + > template <class _ValueType> > inline _LIBCPP_INLINE_VISIBILITY > _ValueType __libcpp_atomic_load(_ValueType const* __val, > > > _______________________________________________ > cfe-commits mailing list > cfe-commits@lists.llvm.org > http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
