Index: llvm/docs/ReleaseNotes.rst
===================================================================
--- llvm/docs/ReleaseNotes.rst
+++ llvm/docs/ReleaseNotes.rst
@@ -129,6 +129,12 @@
 Changes to the DAG infrastructure
 ---------------------------------
 
+Changes to the LLVM tools
+---------------------------------
+
+* Added an option (--show-section-sizes) to llvm-dwarfdump to show the sizes
+  of all debug sections within a file.
+
 Changes to LLDB
 ===============