<li><a href="#i_shr">'<tt>shr</tt>' Instruction</a></li>
</ol>
</li>
+ <li><a href="#vectorops">Vector Operations</a>
+ <ol>
+ <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_shufflevector">'<tt>shufflevector</tt>' Instruction</a></li>
+ </ol>
+ </li>
<li><a href="#memoryops">Memory Access Operations</a>
<ol>
<li><a href="#i_malloc">'<tt>malloc</tt>' Instruction</a></li>
<li><a href="#i_phi">'<tt>phi</tt>' Instruction</a></li>
<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_vsetint">'<tt>vsetint</tt>' Instruction</a></li>
- <li><a href="#i_vsetfp">'<tt>vsetfp</tt>' Instruction</a></li>
- <li><a href="#i_vselect">'<tt>vselect</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>
<!-- ======================================================================= -->
<div class="doc_subsection">
- <a name="moduleasm">Module-Level Inline Assembly</a></li>
+ <a name="moduleasm">Module-Level Inline Assembly</a>
</div>
<div class="doc_text">
<dd>Perform the <a href="#i_insertelement">insertelement
operation</a> on constants.
+
+ <dt><b><tt>shufflevector ( VEC1, VEC2, IDXMASK )</tt></b></dt>
+
+ <dd>Perform the <a href="#i_shufflevector">shufflevector
+ 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
</pre>
</div>
+<!-- ======================================================================= -->
+<div class="doc_subsection">
+ <a name="vectorops">Vector Operations</a>
+</div>
+
+<div class="doc_text">
+
+<p>LLVM supports several instructions to represent vector operations in a
+target-independent manner. This instructions cover the element-access and
+vector-specific operations needed to process vectors effectively. While LLVM
+does directly support these vector operations, many sophisticated algorithms
+will want to use target-specific intrinsics to take full advantage of a specific
+target.</p>
+
+</div>
+
+<!-- _______________________________________________________________________ -->
+<div class="doc_subsubsection">
+ <a name="i_extractelement">'<tt>extractelement</tt>' Instruction</a>
+</div>
+
+<div class="doc_text">
+
+<h5>Syntax:</h5>
+
+<pre>
+ <result> = extractelement <n x <ty>> <val>, uint <idx> <i>; yields <ty></i>
+</pre>
+
+<h5>Overview:</h5>
+
+<p>
+The '<tt>extractelement</tt>' instruction extracts a single scalar
+element from a packed vector at a specified index.
+</p>
+
+
+<h5>Arguments:</h5>
+
+<p>
+The first operand of an '<tt>extractelement</tt>' instruction is a
+value of <a href="#t_packed">packed</a> type. The second operand is
+an index indicating the position from which to extract the element.
+The index may be a variable.</p>
+
+<h5>Semantics:</h5>
+
+<p>
+The result is a scalar of the same type as the element type of
+<tt>val</tt>. Its value is the value at position <tt>idx</tt> of
+<tt>val</tt>. If <tt>idx</tt> exceeds the length of <tt>val</tt>, the
+results are undefined.
+</p>
+
+<h5>Example:</h5>
+
+<pre>
+ %result = extractelement <4 x int> %vec, uint 0 <i>; yields int</i>
+</pre>
+</div>
+
+
+<!-- _______________________________________________________________________ -->
+<div class="doc_subsubsection">
+ <a name="i_insertelement">'<tt>insertelement</tt>' Instruction</a>
+</div>
+
+<div class="doc_text">
+
+<h5>Syntax:</h5>
+
+<pre>
+ <result> = insertelement <n x <ty>> <val>, <ty> <elt>, uint <idx> <i>; yields <n x <ty>></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 <4 x int> %vec, int 1, uint 0 <i>; yields <4 x int></i>
+</pre>
+</div>
+
+<!-- _______________________________________________________________________ -->
+<div class="doc_subsubsection">
+ <a name="i_shufflevector">'<tt>shufflevector</tt>' Instruction</a>
+</div>
+
+<div class="doc_text">
+
+<h5>Syntax:</h5>
+
+<pre>
+ <result> = shufflevector <n x <ty>> <v1>, <n x <ty>> <v2>, <n x uint> <mask> <i>; yields <n x <ty>></i>
+</pre>
+
+<h5>Overview:</h5>
+
+<p>
+The '<tt>shufflevector</tt>' instruction constructs a permutation of elements
+from two input vectors, returning a vector of the same type.
+</p>
+
+<h5>Arguments:</h5>
+
+<p>
+The first two operands of a '<tt>shufflevector</tt>' instruction are vectors
+with types that match each other and types that match the result of the
+instruction. The third argument is a shuffle mask, which has the same number
+of elements as the other vector type, but whose element type is always 'uint'.
+</p>
+
+<p>
+The shuffle mask operand is required to be a constant vector with either
+constant integer or undef values.
+</p>
+
+<h5>Semantics:</h5>
+
+<p>
+The elements of the two input vectors are numbered from left to right across
+both of the vectors. The shuffle mask operand specifies, for each element of
+the result vector, which element of the two input registers the result element
+gets. The element selector may be undef (meaning "don't care") and the second
+operand may be undef if performing a shuffle from only one vector.
+</p>
+
+<h5>Example:</h5>
+
+<pre>
+ %result = shufflevector <4 x int> %v1, <4 x int> %v2,
+ <4 x uint> <uint 0, uint 4, uint 1, uint 5> <i>; yields <4 x int></i>
+ %result = shufflevector <4 x int> %v1, <4 x int> undef,
+ <4 x uint> <uint 0, uint 1, uint 2, uint 3> <i>; yields <4 x int></i> - Identity shuffle.
+</pre>
+</div>
+
<!-- ======================================================================= -->
<div class="doc_subsection">
<a name="memoryops">Memory Access Operations</a>
</pre>
</div>
-<!-- _______________________________________________________________________ -->
-<div class="doc_subsubsection"> <a name="i_vsetint">'<tt>vsetint</tt>'
-Instruction</a> </div>
-<div class="doc_text">
-<h5>Syntax:</h5>
-<pre><result> = vsetint <op>, <n x <ty>> <var1>, <var2> <i>; yields <n x bool></i>
-</pre>
-
-<h5>Overview:</h5>
-
-<p>The '<tt>vsetint</tt>' instruction takes two integer vectors and
-returns a vector of boolean values representing, at each position, the
-result of the comparison between the values at that position in the
-two operands.</p>
-
-<h5>Arguments:</h5>
-
-<p>The arguments to a '<tt>vsetint</tt>' instruction are a comparison
-operation and two value arguments. The value arguments must be of <a
-href="#t_integral">integral</a> <a href="#t_packed">packed</a> type,
-and they must have identical types. The operation argument must be
-one of <tt>eq</tt>, <tt>ne</tt>, <tt>slt</tt>, <tt>sgt</tt>,
-<tt>sle</tt>, <tt>sge</tt>, <tt>ult</tt>, <tt>ugt</tt>, <tt>ule</tt>,
-<tt>uge</tt>, <tt>true</tt>, and <tt>false</tt>. The result is a
-packed <tt>bool</tt> value with the same length as each operand.</p>
-
-<h5>Semantics:</h5>
-
-<p>The following table shows the semantics of '<tt>vsetint</tt>'. For
-each position of the result, the comparison is done on the
-corresponding positions of the two value arguments. Note that the
-signedness of the comparison depends on the comparison opcode and
-<i>not</i> on the signedness of the value operands. E.g., <tt>vsetint
-slt <4 x unsigned> %x, %y</tt> does an elementwise <i>signed</i>
-comparison of <tt>%x</tt> and <tt>%y</tt>.</p>
-
-<table border="1" cellspacing="0" cellpadding="4">
- <tbody>
- <tr><th>Operation</th><th>Result is true iff</th><th>Comparison is</th></tr>
- <tr><td><tt>eq</tt></td><td>var1 == var2</td><td>--</td></tr>
- <tr><td><tt>ne</tt></td><td>var1 != var2</td><td>--</td></tr>
- <tr><td><tt>slt</tt></td><td>var1 < var2</td><td>signed</td></tr>
- <tr><td><tt>sgt</tt></td><td>var1 > var2</td><td>signed</td></tr>
- <tr><td><tt>sle</tt></td><td>var1 <= var2</td><td>signed</td></tr>
- <tr><td><tt>sge</tt></td><td>var1 >= var2</td><td>signed</td></tr>
- <tr><td><tt>ult</tt></td><td>var1 < var2</td><td>unsigned</td></tr>
- <tr><td><tt>ugt</tt></td><td>var1 > var2</td><td>unsigned</td></tr>
- <tr><td><tt>ule</tt></td><td>var1 <= var2</td><td>unsigned</td></tr>
- <tr><td><tt>uge</tt></td><td>var1 >= var2</td><td>unsigned</td></tr>
- <tr><td><tt>true</tt></td><td>always</td><td>--</td></tr>
- <tr><td><tt>false</tt></td><td>never</td><td>--</td></tr>
- </tbody>
-</table>
-
-<h5>Example:</h5>
-<pre> <result> = vsetint eq <2 x int> <int 0, int 1>, <int 1, int 0> <i>; yields {<2 x bool>}:result = false, false</i>
- <result> = vsetint ne <2 x int> <int 0, int 1>, <int 1, int 0> <i>; yields {<2 x bool>}:result = true, true</i>
- <result> = vsetint slt <2 x int> <int 0, int 1>, <int 1, int 0> <i>; yields {<2 x bool>}:result = true, false</i>
- <result> = vsetint sgt <2 x int> <int 0, int 1>, <int 1, int 0> <i>; yields {<2 x bool>}:result = false, true</i>
- <result> = vsetint sle <2 x int> <int 0, int 1>, <int 1, int 0> <i>; yields {<2 x bool>}:result = true, false</i>
- <result> = vsetint sge <2 x int> <int 0, int 1>, <int 1, int 0> <i>; yields {<2 x bool>}:result = false, true</i>
-</pre>
-</div>
-
-<!-- _______________________________________________________________________ -->
-<div class="doc_subsubsection"> <a name="i_vsetfp">'<tt>vsetfp</tt>'
-Instruction</a> </div>
-<div class="doc_text">
-<h5>Syntax:</h5>
-<pre><result> = vsetfp <op>, <n x <ty>> <var1>, <var2> <i>; yields <n x bool></i>
-</pre>
-
-<h5>Overview:</h5>
-
-<p>The '<tt>vsetfp</tt>' instruction takes two floating point vector
-arguments and returns a vector of boolean values representing, at each
-position, the result of the comparison between the values at that
-position in the two operands.</p>
-
-<h5>Arguments:</h5>
-
-<p>The arguments to a '<tt>vsetfp</tt>' instruction are a comparison
-operation and two value arguments. The value arguments must be of <a
-href="t_floating">floating point</a> <a href="#t_packed">packed</a>
-type, and they must have identical types. The operation argument must
-be one of <tt>eq</tt>, <tt>ne</tt>, <tt>lt</tt>, <tt>gt</tt>,
-<tt>le</tt>, <tt>ge</tt>, <tt>oeq</tt>, <tt>one</tt>, <tt>olt</tt>,
-<tt>ogt</tt>, <tt>ole</tt>, <tt>oge</tt>, <tt>ueq</tt>, <tt>une</tt>,
-<tt>ult</tt>, <tt>ugt</tt>, <tt>ule</tt>, <tt>uge</tt>, <tt>o</tt>,
-<tt>u</tt>, <tt>true</tt>, and <tt>false</tt>. The result is a packed
-<tt>bool</tt> value with the same length as each operand.</p>
-
-<h5>Semantics:</h5>
-
-<p>The following table shows the semantics of '<tt>vsetfp</tt>' for
-floating point types. If either operand is a floating point Not a
-Number (NaN) value, the operation is unordered, and the value in the
-first column below is produced at that position. Otherwise, the
-operation is ordered, and the value in the second column is
-produced.</p>
-
-<table border="1" cellspacing="0" cellpadding="4">
- <tbody>
- <tr><th>Operation</th><th>If unordered<th>Otherwise true iff</th></tr>
- <tr><td><tt>eq</tt></td><td>undefined</td><td>var1 == var2</td></tr>
- <tr><td><tt>ne</tt></td><td>undefined</td><td>var1 != var2</td></tr>
- <tr><td><tt>lt</tt></td><td>undefined</td><td>var1 < var2</td></tr>
- <tr><td><tt>gt</tt></td><td>undefined</td><td>var1 > var2</td></tr>
- <tr><td><tt>le</tt></td><td>undefined</td><td>var1 <= var2</td></tr>
- <tr><td><tt>ge</tt></td><td>undefined</td><td>var1 >= var2</td></tr>
- <tr><td><tt>oeq</tt></td><td>false</td><td>var1 == var2</td></tr>
- <tr><td><tt>one</tt></td><td>false</td><td>var1 != var2</td></tr>
- <tr><td><tt>olt</tt></td><td>false</td><td>var1 < var2</td></tr>
- <tr><td><tt>ogt</tt></td><td>false</td><td>var1 > var2</td></tr>
- <tr><td><tt>ole</tt></td><td>false</td><td>var1 <= var2</td></tr>
- <tr><td><tt>oge</tt></td><td>false</td><td>var1 >= var2</td></tr>
- <tr><td><tt>ueq</tt></td><td>true</td><td>var1 == var2</td></tr>
- <tr><td><tt>une</tt></td><td>true</td><td>var1 != var2</td></tr>
- <tr><td><tt>ult</tt></td><td>true</td><td>var1 < var2</td></tr>
- <tr><td><tt>ugt</tt></td><td>true</td><td>var1 > var2</td></tr>
- <tr><td><tt>ule</tt></td><td>true</td><td>var1 <= var2</td></tr>
- <tr><td><tt>uge</tt></td><td>true</td><td>var1 >= var2</td></tr>
- <tr><td><tt>o</tt></td><td>false</td><td>always</td></tr>
- <tr><td><tt>u</tt></td><td>true</td><td>never</td></tr>
- <tr><td><tt>true</tt></td><td>true</td><td>always</td></tr>
- <tr><td><tt>false</tt></td><td>false</td><td>never</td></tr>
- </tbody>
-</table>
-
-<h5>Example:</h5>
-<pre> <result> = vsetfp eq <2 x float> <float 0.0, float 1.0>, <float 1.0, float 0.0> <i>; yields {<2 x bool>}:result = false, false</i>
- <result> = vsetfp ne <2 x float> <float 0.0, float 1.0>, <float 1.0, float 0.0> <i>; yields {<2 x bool>}:result = true, true</i>
- <result> = vsetfp lt <2 x float> <float 0.0, float 1.0>, <float 1.0, float 0.0> <i>; yields {<2 x bool>}:result = true, false</i>
- <result> = vsetfp gt <2 x float> <float 0.0, float 1.0>, <float 1.0, float 0.0> <i>; yields {<2 x bool>}:result = false, true</i>
- <result> = vsetfp le <2 x float> <float 0.0, float 1.0>, <float 1.0, float 0.0> <i>; yields {<2 x bool>}:result = true, false</i>
- <result> = vsetfp ge <2 x float> <float 0.0, float 1.0>, <float 1.0, float 0.0> <i>; yields {<2 x bool>}:result = false, true</i>
-</pre>
-</div>
-
-<!-- _______________________________________________________________________ -->
-<div class="doc_subsubsection">
- <a name="i_vselect">'<tt>vselect</tt>' Instruction</a>
-</div>
-
-<div class="doc_text">
-
-<h5>Syntax:</h5>
-
-<pre>
- <result> = vselect <n x bool> <cond>, <n x <ty>> <val1>, <n x <ty>> <val2> <i>; yields <n x <ty>></i>
-</pre>
-
-<h5>Overview:</h5>
-
-<p>
-The '<tt>vselect</tt>' instruction chooses one value at each position
-of a vector based on a condition.
-</p>
-
-
-<h5>Arguments:</h5>
-
-<p>
-The '<tt>vselect</tt>' instruction requires a <a
-href="#t_packed">packed</a> <tt>bool</tt> value indicating the
-condition at each vector position, and two values of the same packed
-type. All three operands must have the same length. The type of the
-result is the same as the type of the two value operands.</p>
-
-<h5>Semantics:</h5>
-
-<p>
-At each position where the <tt>bool</tt> vector is true, that position
-of the result gets its value from the first value argument; otherwise,
-it gets its value from the second value argument.
-</p>
-
-<h5>Example:</h5>
-
-<pre>
- %X = vselect bool <2 x bool> <bool true, bool false>, <2 x ubyte> <ubyte 17, ubyte 17>,
- <2 x ubyte> <ubyte 42, ubyte 42> <i>; yields <2 x ubyte>:17, 42</i>
-</pre>
-</div>
-
-<!-- _______________________________________________________________________ -->
-<div class="doc_subsubsection">
- <a name="i_extractelement">'<tt>extractelement</tt>' Instruction</a>
-</div>
-
-<div class="doc_text">
-
-<h5>Syntax:</h5>
-
-<pre>
- <result> = extractelement <n x <ty>> <val>, uint <idx> <i>; yields <ty></i>
-</pre>
-
-<h5>Overview:</h5>
-
-<p>
-The '<tt>extractelement</tt>' instruction extracts a single scalar
-element from a packed vector at a specified index.
-</p>
-
-
-<h5>Arguments:</h5>
-
-<p>
-The first operand of an '<tt>extractelement</tt>' instruction is a
-value of <a href="#t_packed">packed</a> type. The second operand is
-an index indicating the position from which to extract the element.
-The index may be a variable.</p>
-
-<h5>Semantics:</h5>
-
-<p>
-The result is a scalar of the same type as the element type of
-<tt>val</tt>. Its value is the value at position <tt>idx</tt> of
-<tt>val</tt>. If <tt>idx</tt> exceeds the length of <tt>val</tt>, the
-results are undefined.
-</p>
-
-<h5>Example:</h5>
-
-<pre>
- %result = extractelement <4 x int> %vec, uint 0 <i>; yields int</i>
-</pre>
-</div>
-
-
-<!-- _______________________________________________________________________ -->
-<div class="doc_subsubsection">
- <a name="i_insertelement">'<tt>insertelement</tt>' Instruction</a>
-</div>
-
-<div class="doc_text">
-
-<h5>Syntax:</h5>
-
-<pre>
- <result> = insertelement <n x <ty>> <val>, <ty> <elt>, uint <idx> <i>; yields <n x <ty>></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 <4 x int> %vec, int 1, uint 0 <i>; yields <4 x int></i>
-</pre>
-</div>
-
<!-- _______________________________________________________________________ -->
<div class="doc_subsubsection">
projects / oota-llvm.git / blobdiff