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Preview of the shift instructions becoming Binary Operators.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33720 91177308-0d34-0410-b5e6-96231b3b80d8
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Reid Spencer
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@ -85,6 +85,9 @@
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<li><a href="#i_urem">'<tt>urem</tt>' Instruction</a></li>
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<li><a href="#i_srem">'<tt>srem</tt>' Instruction</a></li>
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<li><a href="#i_frem">'<tt>frem</tt>' Instruction</a></li>
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<li><a href="#i_shl">'<tt>shl</tt>' Instruction</a></li>
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<li><a href="#i_lshr">'<tt>lshr</tt>' Instruction</a></li>
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<li><a href="#i_ashr">'<tt>ashr</tt>' Instruction</a></li>
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</ol>
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</li>
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<li><a href="#bitwiseops">Bitwise Binary Operations</a>
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@ -92,9 +95,6 @@
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<li><a href="#i_and">'<tt>and</tt>' Instruction</a></li>
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<li><a href="#i_or">'<tt>or</tt>' Instruction</a></li>
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<li><a href="#i_xor">'<tt>xor</tt>' Instruction</a></li>
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<li><a href="#i_shl">'<tt>shl</tt>' Instruction</a></li>
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<li><a href="#i_lshr">'<tt>lshr</tt>' Instruction</a></li>
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<li><a href="#i_ashr">'<tt>ashr</tt>' Instruction</a></li>
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</ol>
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</li>
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<li><a href="#vectorops">Vector Operations</a>
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@ -1952,6 +1952,88 @@ identical types.</p>
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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_shl">'<tt>shl</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> = shl <ty> <var1>, <var2> <i>; yields {ty}:result</i>
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</pre>
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<h5>Overview:</h5>
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<p>The '<tt>shl</tt>' instruction returns the first operand shifted to
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the left a specified number of bits.</p>
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<h5>Arguments:</h5>
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<p>Both arguments to the '<tt>shl</tt>' instruction must be the same <a
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href="#t_integer">integer</a> type.</p>
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<h5>Semantics:</h5>
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<p>The value produced is <tt>var1</tt> * 2<sup><tt>var2</tt></sup>.</p>
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<h5>Example:</h5><pre>
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<result> = shl i32 4, %var <i>; yields {i32}: 4 << %var</i>
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<result> = shl i32 4, 2 <i>; yields {i32}: 16</i>
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<result> = shl i32 1, 10 <i>; yields {i32}: 1024</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_lshr">'<tt>lshr</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> = lshr <ty> <var1>, <var2> <i>; yields {ty}:result</i>
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</pre>
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<h5>Overview:</h5>
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<p>The '<tt>lshr</tt>' instruction (logical shift right) returns the first
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operand shifted to the right a specified number of bits.</p>
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<h5>Arguments:</h5>
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<p>Both arguments to the '<tt>lshr</tt>' instruction must be the same
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<a href="#t_integer">integer</a> type.</p>
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<h5>Semantics:</h5>
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<p>This instruction always performs a logical shift right operation. The most
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significant bits of the result will be filled with zero bits after the
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shift.</p>
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<h5>Example:</h5>
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<pre>
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<result> = lshr i32 4, 1 <i>; yields {i32}:result = 2</i>
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<result> = lshr i32 4, 2 <i>; yields {i32}:result = 1</i>
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<result> = lshr i8 4, 3 <i>; yields {i8}:result = 0</i>
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<result> = lshr i8 -2, 1 <i>; yields {i8}:result = 0x7FFFFFFF </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_ashr">'<tt>ashr</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> = ashr <ty> <var1>, <var2> <i>; yields {ty}:result</i>
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</pre>
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<h5>Overview:</h5>
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<p>The '<tt>ashr</tt>' instruction (arithmetic shift right) returns the first
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operand shifted to the right a specified number of bits.</p>
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<h5>Arguments:</h5>
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<p>Both arguments to the '<tt>ashr</tt>' instruction must be the same
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<a href="#t_integer">integer</a> type.</p>
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<h5>Semantics:</h5>
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<p>This instruction always performs an arithmetic shift right operation,
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The most significant bits of the result will be filled with the sign bit
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of <tt>var1</tt>.</p>
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<h5>Example:</h5>
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<pre>
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<result> = ashr i32 4, 1 <i>; yields {i32}:result = 2</i>
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<result> = ashr i32 4, 2 <i>; yields {i32}:result = 1</i>
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<result> = ashr i8 4, 3 <i>; yields {i8}:result = 0</i>
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<result> = ashr i8 -2, 1 <i>; yields {i8}:result = -1</i>
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</pre>
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</div>
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<!-- ======================================================================= -->
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<div class="doc_subsection"> <a name="bitwiseops">Bitwise Binary
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Operations</a> </div>
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@ -2127,89 +2209,6 @@ identical types.</p>
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<result> = xor i32 %V, -1 <i>; yields {i32}:result = ~%V</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_shl">'<tt>shl</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> = shl <ty> <var1>, i8 <var2> <i>; yields {ty}:result</i>
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</pre>
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<h5>Overview:</h5>
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<p>The '<tt>shl</tt>' instruction returns the first operand shifted to
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the left a specified number of bits.</p>
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<h5>Arguments:</h5>
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<p>The first argument to the '<tt>shl</tt>' instruction must be an <a
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href="#t_integer">integer</a> type. The second argument must be an '<tt>i8</tt>'
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type.</p>
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<h5>Semantics:</h5>
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<p>The value produced is <tt>var1</tt> * 2<sup><tt>var2</tt></sup>.</p>
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<h5>Example:</h5>
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<pre> <result> = shl i32 4, i8 %var <i>; yields {i32}:result = 4 << %var</i>
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<result> = shl i32 4, i8 2 <i>; yields {i32}:result = 16</i>
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<result> = shl i32 1, i8 10 <i>; yields {i32}:result = 1024</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_lshr">'<tt>lshr</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> = lshr <ty> <var1>, i8 <var2> <i>; yields {ty}:result</i>
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</pre>
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<h5>Overview:</h5>
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<p>The '<tt>lshr</tt>' instruction (logical shift right) returns the first
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operand shifted to the right a specified number of bits.</p>
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<h5>Arguments:</h5>
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<p>The first argument to the '<tt>lshr</tt>' instruction must be an <a
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href="#t_integer">integer</a> type. The second argument must be an '<tt>i8</tt>' type.</p>
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<h5>Semantics:</h5>
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<p>This instruction always performs a logical shift right operation. The
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<tt>var2</tt> most significant bits will be filled with zero bits after the
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shift.</p>
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<h5>Example:</h5>
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<pre>
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<result> = lshr i32 4, i8 1 <i>; yields {i32}:result = 2</i>
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<result> = lshr i32 4, i8 2 <i>; yields {i32}:result = 1</i>
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<result> = lshr i8 4, i8 3 <i>; yields {i8 }:result = 0</i>
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<result> = lshr i8 -2, i8 1 <i>; yields {i8 }:result = 0x7FFFFFFF </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_ashr">'<tt>ashr</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> = ashr <ty> <var1>, i8 <var2> <i>; yields {ty}:result</i>
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</pre>
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<h5>Overview:</h5>
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<p>The '<tt>ashr</tt>' instruction (arithmetic shift right) returns the first
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operand shifted to the right a specified number of bits.</p>
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<h5>Arguments:</h5>
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<p>The first argument to the '<tt>ashr</tt>' instruction must be an
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<a href="#t_integer">integer</a> type. The second argument must be an
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'<tt>i8</tt>' type.</p>
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<h5>Semantics:</h5>
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<p>This instruction always performs an arithmetic shift right operation,
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regardless of whether the arguments are signed or not. The <tt>var2</tt> most
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significant bits will be filled with the sign bit of <tt>var1</tt>.</p>
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<h5>Example:</h5>
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<pre>
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<result> = ashr i32 4, i8 1 <i>; yields {i32}:result = 2</i>
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<result> = ashr i32 4, i8 2 <i>; yields {i32}:result = 1</i>
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<result> = ashr i8 4, i8 3 <i>; yields {i8}:result = 0</i>
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<result> = ashr i8 -2, i8 1 <i>; yields {i8 }:result = -1</i>
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</pre>
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</div>
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<!-- ======================================================================= -->
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<div class="doc_subsection">
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