[docs] Update release notes for OpenMP 5.1 loop transformations.
diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index 285e057..4b6f4fe 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -161,6 +161,24 @@
OpenMP Support in Clang
-----------------------
+- Support for loop transformation directives from OpenMP 5.1 have been added.
+ ``#pragma omp unroll`` is a standardized alternative to ``#pragma unroll``
+ (or ``#pragma clang loop unroll(enable)``) but also allows composition with
+ other OpenMP loop associated constructs as in
+
+ .. code-block:: c
+ #pragma omp parallel for
+ #pragma omp unroll partial(4)
+ for (int i = 0; i < n; ++i)
+
+ ``#pragma omp tile`` applies tiling to a perfect loop nest using a
+ user-defined tile size.
+
+ .. code-block:: c
+ #pragma omp tile sizes(8,8)
+ for (int i = 0; i < m; ++i)
+ for (int j = 0; j < n; ++j)
+
- ...
CUDA Support in Clang
