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improve the description of types, patch by Alain Frisch

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45564 91177308-0d34-0410-b5e6-96231b3b80d8
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Chris Lattner 2008-01-04 04:32:38 +00:00
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1 changed files with 82 additions and 38 deletions
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docs/LangRef.html
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@ -33,9 +33,12 @@
</li>
<li><a href="#typesystem">Type System</a>
<ol>
<li><a href="#t_classifications">Type Classifications</a></li>
<li><a href="#t_primitive">Primitive Types</a>
<ol>
<li><a href="#t_classifications">Type Classifications</a></li>
<li><a href="#t_floating">Floating Point Types</a></li>
<li><a href="#t_void">Void Type</a></li>
<li><a href="#t_label">Label Type</a></li>
</ol>
</li>
<li><a href="#t_derived">Derived Types</a>
@ -974,59 +977,49 @@ three address code representations.</p>
</div>
<!-- ======================================================================= -->
<div class="doc_subsection"> <a name="t_primitive">Primitive Types</a> </div>
<div class="doc_text">
<p>The primitive types are the fundamental building blocks of the LLVM
system. The current set of primitive types is as follows:</p>
<table class="layout">
<tr class="layout">
<td class="left">
<table>
<tbody>
<tr><th>Type</th><th>Description</th></tr>
<tr><td><tt><a name="t_void">void</a></tt></td><td>No value</td></tr>
<tr><td><tt>label</tt></td><td>Branch destination</td></tr>
</tbody>
</table>
</td>
<td class="right">
<table>
<tbody>
<tr><th>Type</th><th>Description</th></tr>
<tr><td><tt>float</tt></td><td>32-bit floating point value</td></tr>
<tr><td><tt>double</tt></td><td>64-bit floating point value</td></tr>
</tbody>
</table>
</td>
</tr>
</table>
</div>
<!-- _______________________________________________________________________ -->
<div class="doc_subsubsection"> <a name="t_classifications">Type
<div class="doc_subsection"> <a name="t_classifications">Type
Classifications</a> </div>
<div class="doc_text">
<p>These different primitive types fall into a few useful
<p>The types fall into a few useful
classifications:</p>
<table border="1" cellspacing="0" cellpadding="4">
<tbody>
<tr><th>Classification</th><th>Types</th></tr>
<tr>
<td><a name="t_integer">integer</a></td>
<td><a href="#t_integer">integer</a></td>
<td><tt>i1, i2, i3, ... i8, ... i16, ... i32, ... i64, ... </tt></td>
</tr>
<tr>
<td><a name="t_floating">floating point</a></td>
<td><tt>float, double</tt></td>
<td><a href="#t_floating">floating point</a></td>
<td><tt>float, double, x86_fp80, fp128, ppc_fp128</tt></td>
</tr>
<tr>
<td><a name="t_firstclass">first class</a></td>
<td><tt>i1, ..., float, double, <br/>
<a href="#t_pointer">pointer</a>,<a href="#t_vector">vector</a></tt>
<td><a href="#t_integer">integer</a>,
<a href="#t_floating">floating point</a>,
<a href="#t_pointer">pointer</a>,
<a href="#t_vector">vector</a>
</td>
</tr>
<tr>
<td><a href="#t_primitive">primitive</a></td>
<td><a href="#t_label">label</a>,
<a href="#t_void">void</a>,
<a href="#t_integer">integer</a>,
<a href="#t_floating">floating point</a>.</td>
</tr>
<tr>
<td><a href="#t_derived">derived</a></td>
<td><a href="#t_integer">integer</a>,
<a href="#t_array">array</a>,
<a href="#t_function">function</a>,
<a href="#t_pointer">pointer</a>,
<a href="#t_struct">structure</a>,
<a href="#t_pstruct">packed structure</a>,
<a href="#t_vector">vector</a>,
<a href="#t_opaque">opaque</a>.
</tr>
</tbody>
</table>
@ -1037,6 +1030,57 @@ instructions. This means that all structures and arrays must be
manipulated either by pointer or by component.</p>
</div>
<!-- ======================================================================= -->
<div class="doc_subsection"> <a name="t_primitive">Primitive Types</a> </div>
<div class="doc_text">
<p>The primitive types are the fundamental building blocks of the LLVM
system.</p>
<!-- _______________________________________________________________________ -->
<div class="doc_subsubsection"> <a name="t_floating">Floating Point Types</a> </div>
<div class="doc_text">
<table>
<tbody>
<tr><th>Type</th><th>Description</th></tr>
<tr><td><tt>float</tt></td><td>32-bit floating point value</td></tr>
<tr><td><tt>double</tt></td><td>64-bit floating point value</td></tr>
<tr><td><tt>fp128</tt></td><td>128-bit floating point value (112-bit mantissa)</td></tr>
<tr><td><tt>x86_fp80</tt></td><td>80-bit floating point value (X87)</td></tr>
<tr><td><tt>ppc_fp128</tt></td><td>128-bit floating point value (two 64-bits)</td></tr>
</tbody>
</table>
</div>
<!-- _______________________________________________________________________ -->
<div class="doc_subsubsection"> <a name="t_void">Void Type</a> </div>
<div class="doc_text">
<h5>Overview:</h5>
<p>The void type does not represent any value and has no size.</p>
<h5>Syntax:</h5>
<pre>
void
</pre>
</div>
<!-- _______________________________________________________________________ -->
<div class="doc_subsubsection"> <a name="t_label">Label Type</a> </div>
<div class="doc_text">
<h5>Overview:</h5>
<p>The label type represents code labels.</p>
<h5>Syntax:</h5>
<pre>
label
</pre>
</div>
<!-- ======================================================================= -->
<div class="doc_subsection"> <a name="t_derived">Derived Types</a> </div>