</ol>
</li>
</ol>
-<div class="doc_text">
-<p><b>Written by <a href="mailto:rspencer@x10sys.com">Reid Spencer</a>
-and <a href="mailto:sabre@nondot.org">Chris Lattner</a></b></p>
-<p> </p>
+<div class="doc_author">
+<p>Written by <a href="mailto:rspencer@x10sys.com">Reid Spencer</a>
+</p>
</div>
<!-- *********************************************************************** -->
<div class="doc_section"> <a name="abstract">Abstract </a></div>
intermediate representation, there is a need to represent pointers in the file.
Slots are used for this purpose. For example, if one has the following assembly:
</p>
-<pre><code>
- %MyType = type { int, sbyte };
- %MyVar = external global %MyType ;
-</code></pre>
-<p>there are two definitions. The definition of %MyVar uses %MyType and %MyType
-is used by %MyVar. In the C++ IR this linkage between %MyVar and %MyType is
-made explicitly by the use of C++ pointers. In bytecode, however, there's no
+
+<div class="doc_code">
+ %MyType = type { int, sbyte }<br>
+ %MyVar = external global %MyType
+</div>
+
+<p>there are two definitions. The definition of <tt>%MyVar</tt> uses
+<tt>%MyType</tt>. In the C++ IR this linkage between <tt>%MyVar</tt> and
+<tt>%MyType</tt> is
+explicit through the use of C++ pointers. In bytecode, however, there's no
ability to store memory addresses. Instead, we compute and write out slot
numbers for every type and Value written to the file.</p>
<p>A slot number is simply an unsigned 32-bit integer encoded in the variable
determines their slot number. This means that slot #1 doesn't mean anything
unless you also specify for which type you want slot #1. Types are handled
specially and are always written to the file first (in the Global Type Pool) and
-in such a way that both forward and backward references of the types can be
+in such a way that both forward and backward references of the types can often be
resolved with a single pass through the type pool. </p>
<p>Slot numbers are also kept small by rearranging their order. Because of the
structure of LLVM, certain values are much more likely to be used frequently