[AVR] Add release notes for 3.8

git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_38@260659 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/docs/ReleaseNotes.rst b/docs/ReleaseNotes.rst
index acae9cda39a831cb0b39bb4851d506cbfd0ca5da..6d141f703024e876847e672c63d577644d14a5fa 100644 (file)
--- a/docs/ReleaseNotes.rst
+++ b/docs/ReleaseNotes.rst
@@ -197,6 +197,12 @@ Changes to the X86 Target
 * Tail call support for ``thiscall``, ``stdcall`, ``vectorcall``, and
   ``fastcall`` functions.
 
+Changes to the AVR Target
+-------------------------
+
+Slightly less than half of the AVR backend has been merged in at this point. It is still
+missing a number large parts which cause it to be unusable, but is well on the
+road to being completely merged and workable.
 
 Changes to the OCaml bindings
 -----------------------------