Mention the new TableGen pattern format in the release notes.
Make threats about removing the old syntax.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@177848 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/ReleaseNotes.rst b/docs/ReleaseNotes.rst
index 822b55f..3ca5560 100644
--- a/docs/ReleaseNotes.rst
+++ b/docs/ReleaseNotes.rst
@@ -64,6 +64,12 @@
attributes, which are useful for passing information to code generation. See
:doc:`HowToUseAttributes` for more details.
+* TableGen's syntax for instruction selection patterns has been simplified.
+ Instead of specifying types indirectly with register classes, you should now
+ specify types directly in the input patterns. See ``SparcInstrInfo.td`` for
+ examples of the new syntax. The old syntax using register classes still
+ works, but it will be removed in a future LLVM release.
+
* ... next change ...
.. NOTE