From: Douglas Gregor <dgregor@apple.com>
Date: Sat, 11 Sep 2010 18:08:34 +0000 (+0000)
Subject: Document our extension to constant-fold __builtin_strlen and strlen
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=eb661ed531667bfcb456af4ca9b5f19b29afa0d7;p=clang

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 6df26db8cf..2eee5c2507 100644
--- a/docs/InternalsManual.html
+++ b/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>