diff --git a/llvm/docs/index.rst b/llvm/docs/index.rst
index dd6ea18f0906..65857cd170e0 100644
--- a/llvm/docs/index.rst
+++ b/llvm/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
 =================================