[WebAssembly] Update release notes

Summary:
Explicitly note that multithreading support is not included in the stable
ABI.

Differential Revision: https://reviews.llvm.org/D56681

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351213 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/docs/ReleaseNotes.rst b/docs/ReleaseNotes.rst
index 3ffebf15010109539cf9582c43835bb55b4f9730..db9cf51949520a4509c6e39fa7b237662b2b4776 100644 (file)
--- a/docs/ReleaseNotes.rst
+++ b/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
 -----------------------------