diff --git a/docs/index.rst b/docs/index.rst
index dd6ea18f090..65857cd170e 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -343,6 +343,9 @@ For API clients and LLVM developers.
 :doc:`MergeFunctions`
   Describes functions merging optimization.
 
+:doc:`InAlloca`
+  Description of the ``inalloca`` argument attribute.
+
 Development Process Documentation
 =================================