Index: llvm/trunk/docs/LangRef.rst
===================================================================
--- llvm/trunk/docs/LangRef.rst
+++ llvm/trunk/docs/LangRef.rst
@@ -2033,8 +2033,11 @@
 A pointer value is *based* on another pointer value according to the
 following rules:
 
--  A pointer value formed from a ``getelementptr`` operation is *based*
-   on the second value operand of the ``getelementptr``.
+-  A pointer value formed from a scalar ``getelementptr`` operation is *based* on
+   the pointer-typed operand of the ``getelementptr``.
+-  The pointer in lane *l* of the result of a vector ``getelementptr`` operation
+   is *based* on the pointer in lane *l* of the vector-of-pointers-typed operand
+   of the ``getelementptr``.
 -  The result value of a ``bitcast`` is *based* on the operand of the
    ``bitcast``.
 -  A pointer value formed by an ``inttoptr`` is *based* on all pointer