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Add metadata example.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@97764 91177308-0d34-0410-b5e6-96231b3b80d8
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Devang Patel 2010-03-04 23:44:48 +00:00
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docs/LangRef.html
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@ -2520,6 +2520,23 @@ call void asm alignstack "eieio", ""()
metadata nodes, which can be looked up in the module symbol table. For metadata nodes, which can be looked up in the module symbol table. For
example: "<tt>!foo = metadata !{!4, !3}</tt>". 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> </div>