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Split the 'vset' instruction into two instructions, 'vsetint' and
'vsetfp', to reflect the fact that the semantics are different for integer and fp values. llvm-svn: 26767
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Robert Bocchino
parent
443f1658c9
commit
60b452c13b
@ -106,7 +106,8 @@
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<li><a href="#i_phi">'<tt>phi</tt>' Instruction</a></li>
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<li><a href="#i_cast">'<tt>cast .. to</tt>' Instruction</a></li>
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<li><a href="#i_select">'<tt>select</tt>' Instruction</a></li>
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<li><a href="#i_vset">'<tt>vset</tt>' Instruction</a></li>
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<li><a href="#i_vsetint">'<tt>vsetint</tt>' Instruction</a></li>
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<li><a href="#i_vsetfp">'<tt>vsetfp</tt>' Instruction</a></li>
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<li><a href="#i_vselect">'<tt>vselect</tt>' Instruction</a></li>
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<li><a href="#i_extractelement">'<tt>extractelement</tt>' Instruction</a></li>
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<li><a href="#i_insertelement">'<tt>insertelement</tt>' Instruction</a></li>
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@ -2331,56 +2332,50 @@ value argument; otherwise, it returns the second value argument.
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</div>
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<!-- _______________________________________________________________________ -->
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<div class="doc_subsubsection"> <a name="i_vset">'<tt>vset</tt>'
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<div class="doc_subsubsection"> <a name="i_vsetint">'<tt>vsetint</tt>'
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Instruction</a> </div>
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<div class="doc_text">
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<h5>Syntax:</h5>
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<pre><result> = vset <op>, <n x <ty>> <var1>, <var2> <i>; yields <n x bool></i>
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<pre><result> = vsetint <op>, <n x <ty>> <var1>, <var2> <i>; yields <n x bool></i>
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</pre>
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<h5>Overview:</h5>
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<p>The '<tt>vset</tt>' instruction returns a vector of boolean
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values representing, at each position, the result of the comparison
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between the values at that position in the two operands.</p>
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<p>The '<tt>vsetint</tt>' instruction takes two integer vectors and
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returns a vector of boolean values representing, at each position, the
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result of the comparison between the values at that position in the
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two operands.</p>
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<h5>Arguments:</h5>
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<p>The arguments to a '<tt>vset</tt>' instruction are a comparison
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<p>The arguments to a '<tt>vsetint</tt>' instruction are a comparison
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operation and two value arguments. The value arguments must be of <a
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href="#t_packed">packed</a> type, and they must have identical types.
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For value arguments of integral element type, the operation argument
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must be one of <tt>eq</tt>, <tt>ne</tt>, <tt>lt</tt>, <tt>gt</tt>,
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<tt>le</tt>, <tt>ge</tt>, <tt>ult</tt>, <tt>ugt</tt>, <tt>ule</tt>,
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<tt>uge</tt>, <tt>true</tt>, and <tt>false</tt>. For value arguments
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of floating point element type, the operation argument must be one of
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<tt>eq</tt>, <tt>ne</tt>, <tt>lt</tt>, <tt>gt</tt>, <tt>le</tt>,
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<tt>ge</tt>, <tt>oeq</tt>, <tt>one</tt>, <tt>olt</tt>, <tt>ogt</tt>,
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<tt>ole</tt>, <tt>oge</tt>, <tt>ueq</tt>, <tt>une</tt>, <tt>ult</tt>,
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<tt>ugt</tt>, <tt>ule</tt>, <tt>uge</tt>, <tt>o</tt>, <tt>u</tt>,
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<tt>true</tt>, and <tt>false</tt>. The result is a packed
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<tt>bool</tt> value with the same length as each operand.</p>
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href="#t_integral">integral</a> <a href="#t_packed">packed</a> type,
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and they must have identical types. The operation argument must be
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one of <tt>eq</tt>, <tt>ne</tt>, <tt>slt</tt>, <tt>sgt</tt>,
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<tt>sle</tt>, <tt>sge</tt>, <tt>ult</tt>, <tt>ugt</tt>, <tt>ule</tt>,
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<tt>uge</tt>, <tt>true</tt>, and <tt>false</tt>. The result is a
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packed <tt>bool</tt> value with the same length as each operand.</p>
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<h5>Semantics:</h5>
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<p>The following table shows the semantics of '<tt>vset</tt>' for
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integral value arguments. For each position of the result, the
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comparison is done on the corresponding positions of the two value
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arguments. Note that the signedness of the comparison depends on the
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comparison opcode and <i>not</i> on the signedness of the value
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operands. E.g., <tt>vset lt <4 x unsigned> %x, %y</tt> does an
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elementwise <i>signed</i> comparison of <tt>%x</tt> and
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<tt>%y</tt>.</p>
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<p>The following table shows the semantics of '<tt>vsetint</tt>'. For
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each position of the result, the comparison is done on the
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corresponding positions of the two value arguments. Note that the
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signedness of the comparison depends on the comparison opcode and
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<i>not</i> on the signedness of the value operands. E.g., <tt>vsetint
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slt <4 x unsigned> %x, %y</tt> does an elementwise <i>signed</i>
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comparison of <tt>%x</tt> and <tt>%y</tt>.</p>
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<table border="1" cellspacing="0" cellpadding="4">
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<tbody>
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<tr><th>Operation</th><th>Result is true iff</th><th>Comparison is</th></tr>
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<tr><td><tt>eq</tt></td><td>var1 == var2</td><td>--</td></tr>
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<tr><td><tt>ne</tt></td><td>var1 != var2</td><td>--</td></tr>
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<tr><td><tt>lt</tt></td><td>var1 < var2</td><td>signed</td></tr>
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<tr><td><tt>gt</tt></td><td>var1 > var2</td><td>signed</td></tr>
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<tr><td><tt>le</tt></td><td>var1 <= var2</td><td>signed</td></tr>
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<tr><td><tt>ge</tt></td><td>var1 >= var2</td><td>signed</td></tr>
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<tr><td><tt>slt</tt></td><td>var1 < var2</td><td>signed</td></tr>
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<tr><td><tt>sgt</tt></td><td>var1 > var2</td><td>signed</td></tr>
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<tr><td><tt>sle</tt></td><td>var1 <= var2</td><td>signed</td></tr>
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<tr><td><tt>sge</tt></td><td>var1 >= var2</td><td>signed</td></tr>
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<tr><td><tt>ult</tt></td><td>var1 < var2</td><td>unsigned</td></tr>
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<tr><td><tt>ugt</tt></td><td>var1 > var2</td><td>unsigned</td></tr>
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<tr><td><tt>ule</tt></td><td>var1 <= var2</td><td>unsigned</td></tr>
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@ -2390,7 +2385,47 @@ elementwise <i>signed</i> comparison of <tt>%x</tt> and
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</tbody>
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</table>
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<p>The following table shows the semantics of '<tt>vset</tt>' for
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<h5>Example:</h5>
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<pre> <result> = vsetint eq <2 x int> <int 0, int 1>, <int 1, int 0> <i>; yields {<2 x bool>}:result = false, false</i>
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<result> = vsetint ne <2 x int> <int 0, int 1>, <int 1, int 0> <i>; yields {<2 x bool>}:result = true, true</i>
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<result> = vsetint slt <2 x int> <int 0, int 1>, <int 1, int 0> <i>; yields {<2 x bool>}:result = true, false</i>
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<result> = vsetint sgt <2 x int> <int 0, int 1>, <int 1, int 0> <i>; yields {<2 x bool>}:result = false, true</i>
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<result> = vsetint sle <2 x int> <int 0, int 1>, <int 1, int 0> <i>; yields {<2 x bool>}:result = true, false</i>
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<result> = vsetint sge <2 x int> <int 0, int 1>, <int 1, int 0> <i>; yields {<2 x bool>}:result = false, true</i>
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</pre>
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</div>
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<!-- _______________________________________________________________________ -->
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<div class="doc_subsubsection"> <a name="i_vsetfp">'<tt>vsetfp</tt>'
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Instruction</a> </div>
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<div class="doc_text">
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<h5>Syntax:</h5>
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<pre><result> = vsetfp <op>, <n x <ty>> <var1>, <var2> <i>; yields <n x bool></i>
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</pre>
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<h5>Overview:</h5>
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<p>The '<tt>vsetfp</tt>' instruction takes two floating point vector
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arguments and returns a vector of boolean values representing, at each
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position, the result of the comparison between the values at that
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position in the two operands.</p>
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<h5>Arguments:</h5>
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<p>The arguments to a '<tt>vsetfp</tt>' instruction are a comparison
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operation and two value arguments. The value arguments must be of <a
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href="t_floating">floating point</a> <a href="#t_packed">packed</a>
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type, and they must have identical types. The operation argument must
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be one of <tt>eq</tt>, <tt>ne</tt>, <tt>lt</tt>, <tt>gt</tt>,
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<tt>le</tt>, <tt>ge</tt>, <tt>oeq</tt>, <tt>one</tt>, <tt>olt</tt>,
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<tt>ogt</tt>, <tt>ole</tt>, <tt>oge</tt>, <tt>ueq</tt>, <tt>une</tt>,
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<tt>ult</tt>, <tt>ugt</tt>, <tt>ule</tt>, <tt>uge</tt>, <tt>o</tt>,
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<tt>u</tt>, <tt>true</tt>, and <tt>false</tt>. The result is a packed
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<tt>bool</tt> value with the same length as each operand.</p>
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<h5>Semantics:</h5>
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<p>The following table shows the semantics of '<tt>vsetfp</tt>' for
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floating point types. If either operand is a floating point Not a
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Number (NaN) value, the operation is unordered, and the value in the
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first column below is produced at that position. Otherwise, the
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@ -2426,12 +2461,12 @@ produced.</p>
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</table>
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<h5>Example:</h5>
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<pre> <result> = vset eq <2 x int> <int 0, int 1>, <int 1, int 0> <i>; yields {<2 x bool>}:result = false, false</i>
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<result> = vset ne <2 x int> <int 0, int 1>, <int 1, int 0> <i>; yields {<2 x bool>}:result = true, true</i>
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<result> = vset lt <2 x int> <int 0, int 1>, <int 1, int 0> <i>; yields {<2 x bool>}:result = true, false</i>
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<result> = vset gt <2 x int> <int 0, int 1>, <int 1, int 0> <i>; yields {<2 x bool>}:result = false, true</i>
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<result> = vset le <2 x int> <int 0, int 1>, <int 1, int 0> <i>; yields {<2 x bool>}:result = true, false</i>
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<result> = vset ge <2 x int> <int 0, int 1>, <int 1, int 0> <i>; yields {<2 x bool>}:result = false, true</i>
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<pre> <result> = vsetfp eq <2 x float> <float 0, float 1>, <float 1, float 0> <i>; yields {<2 x bool>}:result = false, false</i>
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<result> = vsetfp ne <2 x float> <float 0, float 1>, <float 1, float 0> <i>; yields {<2 x bool>}:result = true, true</i>
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<result> = vsetfp lt <2 x float> <float 0, float 1>, <float 1, float 0> <i>; yields {<2 x bool>}:result = true, false</i>
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<result> = vsetfp gt <2 x float> <float 0, float 1>, <float 1, float 0> <i>; yields {<2 x bool>}:result = false, true</i>
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<result> = vsetfp le <2 x float> <float 0, float 1>, <float 1, float 0> <i>; yields {<2 x bool>}:result = true, false</i>
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<result> = vsetfp ge <2 x float> <float 0, float 1>, <float 1, float 0> <i>; yields {<2 x bool>}:result = false, true</i>
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</pre>
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</div>
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