Document our extension to constant-fold __builtin_strlen and strlen
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@113699 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/InternalsManual.html b/docs/InternalsManual.html
index 6df26db..2eee5c2 100644
--- a/docs/InternalsManual.html
+++ b/docs/InternalsManual.html
@@ -1682,6 +1682,7 @@
floating-point literal.</li>
<li><b><tt>__builtin_abs,copysign,..</tt></b>: These are constant folded as
general constant expressions.</li>
+<li><b><tt>__builtin_strlen</tt></b> and <b><tt>strlen</tt></b>: These are constant folded as integer constant expressions if the argument is a string literal.</li>
</ul>