diff --git a/docs/ExtendingLLVM.html b/docs/ExtendingLLVM.html
index cc872ab78b8..c6f27f094bd 100644
--- a/docs/ExtendingLLVM.html
+++ b/docs/ExtendingLLVM.html
@@ -104,6 +104,10 @@ function and then be turned into an instruction if warranted.</p>
     not access memory, or does not write to memory, add it to the relevant list
     of functions.</li>
 
+<li><tt>llvm/lib/Transforms/Utils/Local.cpp</tt>: If it is possible to constant
+    propagate your intrinsic, add support to it in the
+    <tt>canConstantFoldCallTo</tt> and <tt>ConstantFoldCall</tt> functions.</li>
+
 <li>Test your intrinsic</li>
 <li><tt>llvm/test/Regression/*</tt>: add your test cases to the test suite.</li>
 </ol>