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<title> MLRISC </title>
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MLRISC
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<a href="INTRO.html"><font size="-1"><font color="#486591"><b>MLRISC</b></font></font></a><br>
<a href="contributors.html"><font size="-1">Contributors</font></a><br>
<a href="requirements.html"><font size="-1">Requirements</font></a><br>
<a href="availability.html"><font size="-1">How to Obtain MLRISC</font></a><br>
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Overview
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<a href="problem.html"><font size="-1">Problem Statement</font></a><br>
<a href="contributions.html"><font size="-1">Contributions</font></a><br>
<a href="mlrisc-compiler.html"><font size="-1">MLRISC Based Compiler</font></a><br>
<a href="mlrisc-ir-rep.html"><font size="-1">MLRISC Intermediate Representation</font></a><br>
<a href="mlrisc-gen.html"><font size="-1">MLRisc Generation</font></a><br>
<a href="backend-opt.html"><font size="-1">Back End Optimizations</font></a><br>
<a href="mlrisc-ra.html"><font size="-1">Register Allocation</font></a><br>
<a href="mlrisc-md.html"><font size="-1">Machine Description</font></a><br>
<a href="gc.html"><font size="-1">Garbage Collection Safety</font></a><br>
<a href="sys-integration.html"><font size="-1">System Integration</font></a><br>
<a href="optimizations.html"><font size="-1">Optimizations</font></a><br>
<a href="mlrisc-graphics.html"><font size="-1">Graphical Interface</font></a><br>
<a href="line-counts.html"><font size="-1">Line Counts</font></a><br>
<a href="systems.html"><font size="-1">Systems Using MLRISC</font></a><br>
<a href="future-work.html"><font size="-1">Future Work</font></a><br>
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System
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<a href="mlrisc-arch.html"><font size="-1">Architecture of MLRISC</font></a><br>
<a href="mltree.html"><font size="-1">The MLTREE Language</font></a><br>
<a href="mltree-ext.html"><font size="-1">MLTree Extensions</font></a><br>
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<a href="instrsel.html"><font size="-1">Instruction Selection</font></a><br>
<a href="asm.html"><font size="-1">Assemblers</font></a><br>
<a href="mc.html"><font size="-1">Machine Code Emitters</font></a><br>
<a href="delayslots.html"><font size="-1">Delay Slot Filling</font></a><br>
<a href="span-dep.html"><font size="-1">Span Dependency Resolution</font></a><br>
<a href="graphs.html"><font size="-1">The Graph Library</font></a><br>
<a href="graphics.html"><font size="-1">The Graph Visualization Library</font></a><br>
<a href="compiler-graphs.html"><font size="-1">Basic Compiler Graphs</font></a><br>
<a href="mlrisc-ir.html"><font size="-1">The MLRISC IR</font></a><br>
<a href="SSA.html"><font size="-1">SSA Optimizations</font></a><br>
<a href="ILP.html"><font size="-1">ILP Optimizations</font></a><br>
<a href="VLIW.html"><font size="-1">Optimizations for VLIW/EPIC Architectur...</font></a><br>
<a href="ra.html"><font size="-1">Register Allocator</font></a><br>
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Back Ends
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<a href="alpha.html"><font size="-1">The Alpha Back End</font></a><br>
<a href="hppa.html"><font size="-1">The PA RISC Back End</font></a><br>
<a href="sparc.html"><font size="-1">The Sparc Back End</font></a><br>
<a href="x86.html"><font size="-1">The Intel x86 Back End</font></a><br>
<a href="ppc.html"><font size="-1">The PowerPC Back End</font></a><br>
<a href="mips.html"><font size="-1">The MIPS Back End</font></a><br>
<a href="C6.html"><font size="-1">The TI C6x Back End</font></a><br>
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Basic Types
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<a href="annotations.html"><font size="-1">Annotations</font></a><br>
<a href="cells.html"><font size="-1">Cells</font></a><br>
<a href="cluster.html"><font size="-1">Cluster</font></a><br>
<a href="constants.html"><font size="-1">Client Defined Constants</font></a><br>
<a href="pseudo-ops.html"><font size="-1">Client Defined Pseudo Ops</font></a><br>
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<a href="streams.html"><font size="-1">Instruction Streams</font></a><br>
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<center><h1><font color="#486591"><b>MLRISC</b></font></h1></center>
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<b>
A framework for retargetable and optimizing compiler back ends
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<center>
<table border=0 align=center><tr><td align=center>
<address>
<a href="mailto:george@research.bell-labs.com">Lal George</a>
</address> </td><td align=center>
<address>
<a href="mailto:leunga@cs.nyu.edu"> Allen Leung</a>
</address> </tr><tr><td align=center>
Bell Labs </td><td align=center> New York University </tr><tr><td align=center>
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</center>
<p>
<center>
<img alt="MLRISC logo" src=pictures/png/uncol.png align="middle">
<p>
<i>
<a href="contributors.html">Contributors</a>
</i>
</center>
<p>
Writing native code generators for modern processors is a significant
investment. Unfortunately it is difficult
to reuse this investment for other architectures, and even more
difficult to reuse for other source language compilers. MLRISC is
a customizable optimizing back-end written in
<a href="http://cm.bell-labs.com/cm/cs/what/smlnj/sml.html">Standard ML</a>
and has been successfully retargeted to multiple architectures.
MLRISC deals elegantly with the special requirements imposed by the
execution model of different high-level, typed languages, by allowing
many components of the system to be customized to fit the source language
semantics and runtime system requirements.
<p>
The <font color="#aa0000">Overview</font> pages on the left provide
an introduction the MLRISC system, mostly from the client's perspective,
while the <font color="#aa0000">System</font>
pages give a more detailed look at the
innards, and are of interest to MLRISC hackers. As usual, development of
the system has outpaced the documentation process substantally; thus
the latter part of the document is incomplete but it may still be useful.
<p>
These pages are also available in
<a href="../latex/mlrisc.ps">tech report</a> form.
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<a href="mailto:leunga@cs.nyu.edu">Allen Leung</a>
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