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Terminology change: drop 'integral' completely. Now we just have integer,

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which includes i1.  Change the semantics of the various instructions to
support i1 where they didn't before: for example, it is now legal [though
not terribly useful, as it is the same as xor] to add two i1 values.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33217 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2007-01-15 01:54:13 +00:00
parent 9e1b1cf3aa
commit 3b19d65897
1 changed files with 22 additions and 27 deletions
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docs/LangRef.html
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@ -772,8 +772,8 @@ system. The current set of primitive types is as follows:</p>
<tbody>
<tr><th>Type</th><th>Description</th></tr>
<tr><td><tt>void</tt></td><td>No value</td></tr>
<tr><td><tt>i8</tt></td><td>Signless 8-bit value</td></tr>
<tr><td><tt>i32</tt></td><td>Signless 32-bit value</td></tr>
<tr><td><tt>i8</tt></td><td>8-bit value</td></tr>
<tr><td><tt>i32</tt></td><td>32-bit value</td></tr>
<tr><td><tt>float</tt></td><td>32-bit floating point value</td></tr>
<tr><td><tt>label</tt></td><td>Branch destination</td></tr>
</tbody>
@ -784,8 +784,8 @@ system. The current set of primitive types is as follows:</p>
<tbody>
<tr><th>Type</th><th>Description</th></tr>
<tr><td><tt>i1</tt></td><td>True or False value</td></tr>
<tr><td><tt>i16</tt></td><td>Signless 16-bit value</td></tr>
<tr><td><tt>i64</tt></td><td>Signless 64-bit value</td></tr>
<tr><td><tt>i16</tt></td><td>16-bit value</td></tr>
<tr><td><tt>i64</tt></td><td>64-bit value</td></tr>
<tr><td><tt>double</tt></td><td>64-bit floating point value</td></tr>
</tbody>
</table>
@ -806,12 +806,7 @@ classifications:</p>
<tr><th>Classification</th><th>Types</th></tr>
<tr>
<td><a name="t_integer">integer</a></td>
<td><tt>i8, i16, i32, i64</tt></td>
</tr>
<tr>
<td><a name="t_integral">integral</a></td>
<td><tt>i1, i8, i16, i32, i64</tt>
</td>
<td><tt>i1, i8, i16, i32, i64</tt></td>
</tr>
<tr>
<td><a name="t_floating">floating point</a></td>
@ -1059,7 +1054,7 @@ considered <a href="#t_firstclass">first class</a>.</p>
</pre>
<p>The number of elements is a constant integer value; elementtype may
be any integral or floating point type.</p>
be any integer or floating point type.</p>
<h5>Examples:</h5>
@ -1266,15 +1261,15 @@ following is the syntax for constant expressions:</p>
<dl>
<dt><b><tt>trunc ( CST to TYPE )</tt></b></dt>
<dd>Truncate a constant to another type. The bit size of CST must be larger
than the bit size of TYPE. Both types must be integral.</dd>
than the bit size of TYPE. Both types must be integers.</dd>
<dt><b><tt>zext ( CST to TYPE )</tt></b></dt>
<dd>Zero extend a constant to another type. The bit size of CST must be
smaller or equal to the bit size of TYPE. Both types must be integral.</dd>
smaller or equal to the bit size of TYPE. Both types must be integers.</dd>
<dt><b><tt>sext ( CST to TYPE )</tt></b></dt>
<dd>Sign extend a constant to another type. The bit size of CST must be
smaller or equal to the bit size of TYPE. Both types must be integral.</dd>
smaller or equal to the bit size of TYPE. Both types must be integers.</dd>
<dt><b><tt>fptrunc ( CST to TYPE )</tt></b></dt>
<dd>Truncate a floating point constant to another floating point type. The
@ -1951,7 +1946,7 @@ Instruction</a> </div>
its two operands.</p>
<h5>Arguments:</h5>
<p>The two arguments to the '<tt>and</tt>' instruction must be <a
href="#t_integral">integral</a> values. Both arguments must have
href="#t_integer">integer</a> values. Both arguments must have
identical types.</p>
<h5>Semantics:</h5>
<p>The truth table used for the '<tt>and</tt>' instruction is:</p>
@ -2004,7 +1999,7 @@ identical types.</p>
or of its two operands.</p>
<h5>Arguments:</h5>
<p>The two arguments to the '<tt>or</tt>' instruction must be <a
href="#t_integral">integral</a> values. Both arguments must have
href="#t_integer">integer</a> values. Both arguments must have
identical types.</p>
<h5>Semantics:</h5>
<p>The truth table used for the '<tt>or</tt>' instruction is:</p>
@ -2059,7 +2054,7 @@ or of its two operands. The <tt>xor</tt> is used to implement the
"one's complement" operation, which is the "~" operator in C.</p>
<h5>Arguments:</h5>
<p>The two arguments to the '<tt>xor</tt>' instruction must be <a
href="#t_integral">integral</a> values. Both arguments must have
href="#t_integer">integer</a> values. Both arguments must have
identical types.</p>
<h5>Semantics:</h5>
<p>The truth table used for the '<tt>xor</tt>' instruction is:</p>
@ -2698,7 +2693,7 @@ The '<tt>trunc</tt>' instruction truncates its operand to the type <tt>ty2</tt>.
<p>
The '<tt>trunc</tt>' instruction takes a <tt>value</tt> to trunc, which must
be an <a href="#t_integer">integer</a> type, and a type that specifies the size
and type of the result, which must be an <a href="#t_integral">integral</a>
and type of the result, which must be an <a href="#t_integer">integer</a>
type. The bit size of <tt>value</tt> must be larger than the bit size of
<tt>ty2</tt>. Equal sized types are not allowed.</p>
@ -2735,8 +2730,8 @@ It will always truncate bits.</p>
<h5>Arguments:</h5>
<p>The '<tt>zext</tt>' instruction takes a value to cast, which must be of
<a href="#t_integral">integral</a> type, and a type to cast it to, which must
also be of <a href="#t_integral">integral</a> type. The bit size of the
<a href="#t_integer">integer</a> type, and a type to cast it to, which must
also be of <a href="#t_integer">integer</a> type. The bit size of the
<tt>value</tt> must be smaller than the bit size of the destination type,
<tt>ty2</tt>.</p>
@ -2773,8 +2768,8 @@ changes).</p>
<h5>Arguments:</h5>
<p>
The '<tt>sext</tt>' instruction takes a value to cast, which must be of
<a href="#t_integral">integral</a> type, and a type to cast it to, which must
also be of <a href="#t_integral">integral</a> type. The bit size of the
<a href="#t_integer">integer</a> type, and a type to cast it to, which must
also be of <a href="#t_integer">integer</a> type. The bit size of the
<tt>value</tt> must be smaller than the bit size of the destination type,
<tt>ty2</tt>.</p>
@ -2887,7 +2882,7 @@ unsigned integer equivalent of type <tt>ty2</tt>.
<h5>Arguments:</h5>
<p>The '<tt>fp2uint</tt>' instruction takes a value to cast, which must be a
<a href="#t_floating">floating point</a> value, and a type to cast it to, which
must be an <a href="#t_integral">integral</a> type.</p>
must be an <a href="#t_integer">integer</a> type.</p>
<h5>Semantics:</h5>
<p> The '<tt>fp2uint</tt>' instruction converts its
@ -2927,7 +2922,7 @@ If the <tt>value</tt> was non-zero, the i1 result will be <tt>true</tt>.</p>
<h5>Arguments:</h5>
<p> The '<tt>fptosi</tt>' instruction takes a value to cast, which must be a
<a href="#t_floating">floating point</a> value, and a type to cast it to, which
must also be an <a href="#t_integral">integral</a> type.</p>
must also be an <a href="#t_integer">integer</a> type.</p>
<h5>Semantics:</h5>
<p>The '<tt>fptosi</tt>' instruction converts its
@ -2965,7 +2960,7 @@ integer and converts that value to the <tt>ty2</tt> type.</p>
<h5>Arguments:</h5>
<p>The '<tt>uitofp</tt>' instruction takes a value to cast, which must be an
<a href="#t_integral">integral</a> value, and a type to cast it to, which must
<a href="#t_integer">integer</a> value, and a type to cast it to, which must
be a <a href="#t_floating">floating point</a> type.</p>
<h5>Semantics:</h5>
@ -2998,7 +2993,7 @@ integer and converts that value to the <tt>ty2</tt> type.</p>
<h5>Arguments:</h5>
<p>The '<tt>sitofp</tt>' instruction takes a value to cast, which must be an
<a href="#t_integral">integral</a> value, and a type to cast it to, which must be
<a href="#t_integer">integer</a> value, and a type to cast it to, which must be
a <a href="#t_floating">floating point</a> type.</p>
<h5>Semantics:</h5>
@ -3157,7 +3152,7 @@ a value, just a keyword. The possibilities for the condition code are:
<li><tt>slt</tt>: signed less than</li>
<li><tt>sle</tt>: signed less or equal</li>
</ol>
<p>The remaining two arguments must be <a href="#t_integral">integral</a> or
<p>The remaining two arguments must be <a href="#t_integer">integer</a> or
<a href="#t_pointer">pointer</a> typed. They must also be identical types.</p>
<h5>Semantics:</h5>
<p>The '<tt>icmp</tt>' compares <tt>var1</tt> and <tt>var2</tt> according to