Document our extension to constant-fold __builtin_strlen and strlen

llvm-svn: 113699
2010-09-11 18:08:34 +00:00 · 2010-09-11 18:08:34 +00:00 · c6876fe121
parent 250ab1dc0e
commit c6876fe121
1 changed files with 1 additions and 0 deletions
--- 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>