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<a href="./Home">MLton 20130715</a>
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<h1>MLRISCLibrary</h1>
</div>
<div id="content">
<div id="preamble">
<div class="sectionbody">
<div class="paragraph"><p>The <a href="http://www.cs.nyu.edu/leunga/www/MLRISC/Doc/html/index.html">MLRISC
Library</a> is a framework for retargetable and optimizing compiler back
ends. The MLRISC Library is distributed with SML/NJ. Due to
differences between SML/NJ and MLton, this library will not work
out-of-the box with MLton.</p></div>
<div class="paragraph"><p>As of 20130706, MLton includes a port of the MLRISC Library
synchronized with SML/NJ version 110.76.</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_usage">Usage</h2>
<div class="sectionbody">
<div class="ulist"><ul>
<li>
<p>
You can import a sub-library of the MLRISC Library into an MLB file with:
</p>
<table class="tableblock frame-all grid-all"
style="
width:100%;
">
<col style="width:50%;">
<col style="width:50%;">
<thead>
<tr>
<th class="tableblock halign-left valign-top" >MLB file</th>
<th class="tableblock halign-left valign-top" >Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="tableblock halign-left valign-top" ><p class="tableblock"><span class="monospaced">$(SML_LIB)/mlrisc-lib/mlb/ALPHA.mlb</span></p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock">The ALPHA backend</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top" ><p class="tableblock"><span class="monospaced">$(SML_LIB)/mlrisc-lib/mlb/AMD64.mlb</span></p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock">The AMD64 backend</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top" ><p class="tableblock"><span class="monospaced">$(SML_LIB)/mlrisc-lib/mlb/AMD64-Peephole.mlb</span></p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock">The AMD64 peephole optimizer</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top" ><p class="tableblock"><span class="monospaced">$(SML_LIB)/mlrisc-lib/mlb/CCall.mlb</span></p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock"></p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top" ><p class="tableblock"><span class="monospaced">$(SML_LIB)/mlrisc-lib/mlb/CCall-sparc.mlb</span></p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock"></p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top" ><p class="tableblock"><span class="monospaced">$(SML_LIB)/mlrisc-lib/mlb/CCall-x86-64.mlb</span></p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock"></p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top" ><p class="tableblock"><span class="monospaced">$(SML_LIB)/mlrisc-lib/mlb/CCall-x86.mlb</span></p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock"></p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top" ><p class="tableblock"><span class="monospaced">$(SML_LIB)/mlrisc-lib/mlb/Control.mlb</span></p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock"></p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top" ><p class="tableblock"><span class="monospaced">$(SML_LIB)/mlrisc-lib/mlb/Graphs.mlb</span></p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock"></p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top" ><p class="tableblock"><span class="monospaced">$(SML_LIB)/mlrisc-lib/mlb/HPPA.mlb</span></p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock">The HPPA backend</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top" ><p class="tableblock"><span class="monospaced">$(SML_LIB)/mlrisc-lib/mlb/IA32.mlb</span></p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock">The IA32 backend</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top" ><p class="tableblock"><span class="monospaced">$(SML_LIB)/mlrisc-lib/mlb/IA32-Peephole.mlb</span></p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock">The IA32 peephole optimizer</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top" ><p class="tableblock"><span class="monospaced">$(SML_LIB)/mlrisc-lib/mlb/Lib.mlb</span></p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock"></p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top" ><p class="tableblock"><span class="monospaced">$(SML_LIB)/mlrisc-lib/mlb/MLRISC.mlb</span></p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock"></p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top" ><p class="tableblock"><span class="monospaced">$(SML_LIB)/mlrisc-lib/mlb/MLTREE.mlb</span></p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock"></p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top" ><p class="tableblock"><span class="monospaced">$(SML_LIB)/mlrisc-lib/mlb/Peephole.mlb</span></p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock"></p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top" ><p class="tableblock"><span class="monospaced">$(SML_LIB)/mlrisc-lib/mlb/PPC.mlb</span></p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock">The PPC backend</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top" ><p class="tableblock"><span class="monospaced">$(SML_LIB)/mlrisc-lib/mlb/RA.mlb</span></p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock"></p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top" ><p class="tableblock"><span class="monospaced">$(SML_LIB)/mlrisc-lib/mlb/SPARC.mlb</span></p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock">The Sparc backend</p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top" ><p class="tableblock"><span class="monospaced">$(SML_LIB)/mlrisc-lib/mlb/StagedAlloc.mlb</span></p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock"></p></td>
</tr>
<tr>
<td class="tableblock halign-left valign-top" ><p class="tableblock"><span class="monospaced">$(SML_LIB)/mlrisc-lib/mlb/Visual.mlb</span></p></td>
<td class="tableblock halign-left valign-top" ><p class="tableblock"></p></td>
</tr>
</tbody>
</table>
</li>
<li>
<p>
If you are porting a project from SML/NJ’s <a href="CompilationManager">CompilationManager</a> to
MLton’s <a href="MLBasis"> ML Basis system</a> using <span class="monospaced">cm2mlb</span>, note that the
following map is included by default:
</p>
<div class="listingblock">
<div class="content monospaced">
<pre># MLRISC Library
$SMLNJ-MLRISC $(SML_LIB)/mlrisc-lib/mlb</pre>
</div></div>
<div class="paragraph"><p>This will automatically convert a <span class="monospaced">$SMLNJ-MLRISC/MLRISC.cm</span> import in
an input <span class="monospaced">.cm</span> file into a <span class="monospaced">$(SML_LIB)/mlrisc-lib/mlb/MLRISC.mlb</span>
import in the output <span class="monospaced">.mlb</span> file.</p></div>
</li>
</ul></div>
</div>
</div>
<div class="sect1">
<h2 id="_details">Details</h2>
<div class="sectionbody">
<div class="paragraph"><p>The following changes were made to the MLRISC Library, in addition to
deriving the <span class="monospaced">.mlb</span> files from the <span class="monospaced">.cm</span> files:</p></div>
<div class="ulist"><ul>
<li>
<p>
eliminate or-patterns: Duplicate the whole match (<span class="monospaced">p => e</span>) at each of the patterns.
</p>
</li>
<li>
<p>
eliminate vector constants: Change <span class="monospaced">#[</span> to <span class="monospaced">Vector.fromList [</span>.
</p>
</li>
<li>
<p>
eliminate <span class="monospaced">withtype</span> in signatures.
</p>
</li>
<li>
<p>
eliminate sequential <span class="monospaced">withtype</span> expansions: Most could be rewritten as a sequence of type definitions and datatype definitions.
</p>
</li>
<li>
<p>
eliminate higher-order functors: Every higher-order functor definition and application could be uncurried in the obvious way.
</p>
</li>
<li>
<p>
eliminate <span class="monospaced">where <str> = <str></span>: Quite painful to expand out all the flexible types in the respective structures. Furthermore, many of the implied type equalities aren’t needed, but it’s too hard to pick out the right ones.
</p>
</li>
</ul></div>
</div>
</div>
<div class="sect1">
<h2 id="_patch">Patch</h2>
<div class="sectionbody">
<div class="ulist"><ul>
<li>
<p>
<a href="https://github.com/MLton/mlton/blob/master/lib/mlrisc-lib/MLRISC.patch"><span class="monospaced">MLRISC.patch</span></a>
</p>
</li>
</ul></div>
</div>
</div>
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