The enum was moved to ISDOpcodes.h.

llvm-svn: 134134
diff --git a/llvm/docs/ExtendingLLVM.html b/llvm/docs/ExtendingLLVM.html
index b720911..795e211 100644
--- a/llvm/docs/ExtendingLLVM.html
+++ b/llvm/docs/ExtendingLLVM.html
@@ -146,7 +146,7 @@
 complicated behavior in a single node (rotate).</p>
 
 <ol>
-<li><tt>include/llvm/CodeGen/SelectionDAGNodes.h</tt>:
+<li><tt>include/llvm/CodeGen/ISDOpcodes.h</tt>:
     Add an enum value for the new SelectionDAG node.</li>
 <li><tt>lib/CodeGen/SelectionDAG/SelectionDAG.cpp</tt>:
     Add code to print the node to <tt>getOperationName</tt>.  If your new node