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ctlz = most signficant bits, cttz = least sig

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22061 91177308-0d34-0410-b5e6-96231b3b80d8
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Chris Lattner
2005-05-15 19:39:26 +00:00
parent 3e909e8bb9
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@ -149,8 +149,8 @@
<li><a href="#int_count">Bit counting Intrinsics</a> <li><a href="#int_count">Bit counting Intrinsics</a>
<ol> <ol>
<li><a href="#int_ctpop">'<tt>llvm.ctpop</tt>' Intrinsic </a></li> <li><a href="#int_ctpop">'<tt>llvm.ctpop</tt>' Intrinsic </a></li>
<li><a href="#int_cttz">'<tt>llvm.cttz</tt>' Intrinsic </a></li>
<li><a href="#int_ctlz">'<tt>llvm.ctlz</tt>' Intrinsic </a></li> <li><a href="#int_ctlz">'<tt>llvm.ctlz</tt>' Intrinsic </a></li>
<li><a href="#int_cttz">'<tt>llvm.cttz</tt>' Intrinsic </a></li>
</ol> </ol>
</li> </li>
<li><a href="#int_debugger">Debugger intrinsics</a></li> <li><a href="#int_debugger">Debugger intrinsics</a></li>
@ -3203,40 +3203,6 @@ The '<tt>llvm.ctpop</tt>' intrinsic counts the 1's in a variable.
</p> </p>
</div> </div>
<!-- _______________________________________________________________________ -->
<div class="doc_subsubsection">
<a name="int_cttz">'<tt>llvm.cttz</tt>' Intrinsic</a>
</div>
<div class="doc_text">
<h5>Syntax:</h5>
<pre>
declare int %llvm.cttz(int &lt;src&gt;)
</pre>
<h5>Overview:</h5>
<p>
The '<tt>llvm.cttz</tt>' intrinsic counts the number of trailing zeros.
</p>
<h5>Arguments:</h5>
<p>
The only argument is the value to be counted. The argument may be of any
integer type. The return type must match the argument type.
</p>
<h5>Semantics:</h5>
<p>
The '<tt>llvm.cttz</tt>' intrinsic counts the trailing zeros in a variable. If
the src == 0 then the result is the size in bits of the type of src.
</p>
</div>
<!-- _______________________________________________________________________ --> <!-- _______________________________________________________________________ -->
<div class="doc_subsubsection"> <div class="doc_subsubsection">
<a name="int_ctlz">'<tt>llvm.ctlz</tt>' Intrinsic</a> <a name="int_ctlz">'<tt>llvm.ctlz</tt>' Intrinsic</a>
@ -3267,12 +3233,49 @@ integer type. The return type must match the argument type.
<h5>Semantics:</h5> <h5>Semantics:</h5>
<p> <p>
The '<tt>llvm.ctlz</tt>' intrinsic counts the leading zeros in a variable. If The '<tt>llvm.ctlz</tt>' intrinsic counts the leading (most significant) zeros
the src == 0 then the result is the size in bits of the type of src. in a variable. If the src == 0 then the result is the size in bits of the type
of src. For example, <tt>llvm.cttz(int 2) = 30</tt>.
</p> </p>
</div> </div>
<!-- _______________________________________________________________________ -->
<div class="doc_subsubsection">
<a name="int_cttz">'<tt>llvm.cttz</tt>' Intrinsic</a>
</div>
<div class="doc_text">
<h5>Syntax:</h5>
<pre>
declare int %llvm.cttz(int &lt;src&gt;)
</pre>
<h5>Overview:</h5>
<p>
The '<tt>llvm.cttz</tt>' intrinsic counts the number of trailing zeros.
</p>
<h5>Arguments:</h5>
<p>
The only argument is the value to be counted. The argument may be of any
integer type. The return type must match the argument type.
</p>
<h5>Semantics:</h5>
<p>
The '<tt>llvm.cttz</tt>' intrinsic counts the trailing (least significant) zeros
in a variable. If the src == 0 then the result is the size in bits of the type
of src. For example, <tt>llvm.cttz(2) = 1</tt>.
</p>
</div>
<!-- ======================================================================= --> <!-- ======================================================================= -->
<div class="doc_subsection"> <div class="doc_subsection">
<a name="int_debugger">Debugger Intrinsics</a> <a name="int_debugger">Debugger Intrinsics</a>