Add a note
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12922 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/ExtendingLLVM.html b/docs/ExtendingLLVM.html
index cc872ab..c6f27f0 100644
--- a/docs/ExtendingLLVM.html
+++ b/docs/ExtendingLLVM.html
@@ -104,6 +104,10 @@
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>