[WebAssembly] Update release notes

dschuff · dschuff · commit 5e54bc18e27b · 2019-01-15T17:54:42.000Z
Summary: Explicitly note that multithreading support is not included in the stable ABI. Differential Revision: https://reviews.llvm.org/D56681 llvm-svn: 351213
diff --git a/llvm/docs/ReleaseNotes.rst b/llvm/docs/ReleaseNotes.rst
@@ -105,6 +105,8 @@ The object file format and core C ABI are now considered stable. That said,
 the object file format has an ABI versioning capability, and one anticipated
 use for it will be to add support for returning small structs as multiple
 return values, once the underlying WebAssembly platform itself supports it.
+Additionally, multithreading support is not yet included in the stable ABI.
+
 
 Changes to the OCaml bindings
 -----------------------------
