From c6876fe1212154b7f21ab8b95473883d7f5a42a6 Mon Sep 17 00:00:00 2001
From: Douglas Gregor <dgregor@apple.com>
Date: Sat, 11 Sep 2010 18:08:34 +0000
Subject: [PATCH] Document our extension to constant-fold __builtin_strlen and
 strlen

llvm-svn: 113699
---
 clang/docs/InternalsManual.html | 1 +
 1 file changed, 1 insertion(+)

diff --git a/clang/docs/InternalsManual.html b/clang/docs/InternalsManual.html
index 6df26db8cfeb..2eee5c2507cf 100644
--- a/clang/docs/InternalsManual.html
+++ b/clang/docs/InternalsManual.html
@@ -1682,6 +1682,7 @@ interacts with constant evaluation:</p>
     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>