Add metadata example.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97764 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/docs/LangRef.html b/docs/LangRef.html
index 20c64bd9d8576490cbd9c46d4a380ab1c8d64032..7cfa05205cead0d9264a0acfdabdf00c95d263c7 100644 (file)
--- a/docs/LangRef.html
+++ b/docs/LangRef.html
@@ -2520,6 +2520,23 @@ call void asm alignstack "eieio", ""()
    metadata nodes, which can be looked up in the module symbol table. For
    example: "<tt>!foo =  metadata !{!4, !3}</tt>".
 
+<p>Metadata can be used as function arguments. Here <tt>llvm.dbg.value</tt> 
+   function is using two metadata arguments.
+
+   <div class="doc_code">
+     <pre>
+       call void @llvm.dbg.value(metadata !24, i64 0, metadata !25)
+     </pre>
+   </div></p>
+
+<p>Metadata can be attached with an instruction. Here metadata <tt>!21</tt> is
+   attached with <tt>add</tt> instruction using <tt>!dbg</tt> identifier.
+
+  <div class="doc_code">
+    <pre>
+      %indvar.next = add i64 %indvar, 1, !dbg !21
+    </pre>
+  </div></p>
 </div>