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Added spec for insertelement operation.

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llvm-svn: 25342
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Robert Bocchino 2006-01-15 20:48:27 +00:00
parent 37428f4021
commit 8cc02aa833
1 changed files with 54 additions and 1 deletions
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docs/LangRef.html
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@ -101,6 +101,7 @@
<li><a href="#i_cast">'<tt>cast .. to</tt>' Instruction</a></li>
<li><a href="#i_select">'<tt>select</tt>' Instruction</a></li>
<li><a href="#i_extractelement">'<tt>extractelement</tt>' Instruction</a></li>
<li><a href="#i_insertelement">'<tt>insertelement</tt>' Instruction</a></li>
<li><a href="#i_call">'<tt>call</tt>' Instruction</a></li>
<li><a href="#i_va_arg">'<tt>va_arg</tt>' Instruction</a></li>
</ol>
@ -1099,6 +1100,11 @@ following is the syntax for constant expressions:</p>
<dd>Perform the <a href="#i_extractelement">extractelement
operation</a> on constants.
<dt><b><tt>insertelement ( VAL, ELT, IDX )</tt></b></dt>
<dd>Perform the <a href="#i_insertelement">insertelement
operation</a> on constants.
<dt><b><tt>OPCODE ( LHS, RHS )</tt></b></dt>
<dd>Perform the specified operation of the LHS and RHS constants. OPCODE may
@ -2261,7 +2267,7 @@ value argument; otherwise, it returns the second value argument.
<p>
The '<tt>extractelement</tt>' instruction extracts a single scalar
element from a vector at a specified index.
element from a packed vector at a specified index.
</p>
@ -2290,6 +2296,53 @@ results are undefined.
</div>
<!-- _______________________________________________________________________ -->
<div class="doc_subsubsection">
<a name="i_insertelement">'<tt>insertelement</tt>' Instruction</a>
</div>
<div class="doc_text">
<h5>Syntax:</h5>
<pre>
&lt;result&gt; = insertelement &lt;n x &lt;ty&gt;&gt; &lt;val&gt;, &lt;ty&gt; &lt;elt&gt, uint &lt;idx&gt; <i>; yields &lt;n x &lt;ty&gt;&gt;</i>
</pre>
<h5>Overview:</h5>
<p>
The '<tt>insertelement</tt>' instruction inserts a scalar
element into a packed vector at a specified index.
</p>
<h5>Arguments:</h5>
<p>
The first operand of an '<tt>insertelement</tt>' instruction is a
value of <a href="#t_packed">packed</a> type. The second operand is a
scalar value whose type must equal the element type of the first
operand. The third operand is an index indicating the position at
which to insert the value. The index may be a variable.</p>
<h5>Semantics:</h5>
<p>
The result is a packed vector of the same type as <tt>val</tt>. Its
element values are those of <tt>val</tt> except at position
<tt>idx</tt>, where it gets the value <tt>elt</tt>. If <tt>idx</tt>
exceeds the length of <tt>val</tt>, the results are undefined.
</p>
<h5>Example:</h5>
<pre>
%result = insertelement &lt;4 x int&gt; %vec, int 1, uint 0 <i>; yields &lt;4 x int&gt;</i>
</pre>
</div>
<!-- _______________________________________________________________________ -->
<div class="doc_subsubsection">
<a name="i_call">'<tt>call</tt>' Instruction</a>