Index: clang/docs/ReleaseNotes.rst
===================================================================
--- clang/docs/ReleaseNotes.rst
+++ clang/docs/ReleaseNotes.rst
@@ -566,10 +566,18 @@
 Objective-C Language Changes in Clang
 -------------------------------------
 
-OpenCL C Language Changes in Clang
-----------------------------------
-
-...
+OpenCL Kernel Language Changes in Clang
+---------------------------------------
+
+- Improved/fixed misc issues in the builtin function support and diagnostics.
+- Improved diagnostics for unknown extension pragma, subgroup functions and
+  implicit function prototype.
+- Added `-cl-ext` flag to the Clang driver to toggle extensions/features
+  compiled for.
+- Added `cl_khr_subgroup_rotate` extension.
+- Removed some `printf` and `hostcall` related diagnostics when compiling for
+  AMDGPU.
+- Fixed alignment of pointer types in kernel arguments.
 
 ABI Changes in Clang
 --------------------
@@ -660,6 +668,12 @@
   Operations found in the :ref:`Clang Language Extensions <Vector Operations>`
   document.
 
+SPIR-V Support in Clang
+-----------------------
+
+- Added flag `-fintegrated-objemitter` to enable use of experimental integrated
+  LLVM backend when generating SPIR-V binary.
+
 Floating Point Support in Clang
 -------------------------------