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MLton
20241230
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<h1>RunningOnSparc</h1>
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<p>MLton runs fine on the Sparc architecture.</p>
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<h2 id="_notes">Notes</h2>
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<li>
<p>When compiling for Sparc, MLton targets the 32-bit Sparc
architecture (i.e., Sparc V8).</p>
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<li>
<p>When compiling for Sparc, MLton doesn&#8217;t support native code
generation (<code>-codegen native</code>).  Hence, performance is not as good as
it might be and compile times are longer.  Also, the quality of code
generated by <code>gcc</code> is important.  By default, MLton calls <code>gcc -O1</code>.
You can change this by calling MLton with <code>-cc-opt -O2</code>.  We have seen
this speed up some programs by as much as 30%, especially those
involving floating point; however, it can also more than double
compile times.</p>
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<li>
<p>When compiling for Sparc, MLton uses <code>-align 8</code> by default.  While
this speeds up reals, it also may increase object sizes.  If your
program does not make significant use of reals, you might see a
speedup with <code>-align 4</code>.</p>
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<h2 id="_known_issues">Known issues</h2>
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<p>Bootstrapping on the <a href="#">Sparc architecture</a> is so slow
as to be impractical (many hours on a 500MHz UltraSparc).  For this
reason, we strongly recommend building with a
<a href="CrossCompiling">cross compiler</a>.</p>
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<h2 id="_also_see">Also see</h2>
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<li>
<p><a href="RunningOnSolaris">RunningOnSolaris</a></p>
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Last updated Thu Oct 21 15:53:06 2021 -0400 by Matthew Fluet.
<a href="https://github.com/MLton/mlton/commits/master/doc/guide/src/RunningOnSparc.adoc">Log</a>
<a href="https://github.com/MLton/mlton/edit/master/doc/guide/src/RunningOnSparc.adoc">Edit</a>
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