Add a note that specifies that the whether or not sign extension is done by

a cast is determined by the source operand.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3304 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/docs/LangRef.html b/docs/LangRef.html
index a23d68a79ad98f78cccddd211ad6453baa06600a..e6e9c30d69afa419953e2b0ef000a13adeb516ab 100644 (file)
--- a/docs/LangRef.html
+++ b/docs/LangRef.html
@@ -1603,6 +1603,11 @@ When casting to bool, any value that would be considered true in the context of
 a C '<tt>if</tt>' condition is converted to the boolean '<tt>true</tt>' values,
 all else are '<tt>false</tt>'.<p>
 
+When extending an integral value from a type of one signness to another (for
+example '<tt>sbyte</tt>' to '<tt>ulong</tt>'), the value is sign-extended if the
+<b>source</b> value is signed, and zero-extended if the source value is
+unsigned.<p>
+
 <h5>Example:</h5>
 <pre>
   %X = cast int 257 to ubyte              <i>; yields ubyte:1</i>
@@ -1736,7 +1741,7 @@ more...
 <address><a href="mailto:sabre@nondot.org">Chris Lattner</a></address>
 <!-- Created: Tue Jan 23 15:19:28 CST 2001 -->
 <!-- hhmts start -->
-Last modified: Tue Jun 25 15:19:34 CDT 2002
+Last modified: Tue Aug 13 15:50:47 CDT 2002
 <!-- hhmts end -->
 </font>
 </body></html>