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<a href="./Home">MLton 20180207</a>
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<h1>LLVMCodegen</h1>
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<div class="paragraph"><p>The <a href="LLVMCodegen">LLVMCodegen</a> is a <a href="Codegen">code generator</a> that translates the
<a href="Machine">Machine</a> <a href="IntermediateLanguage">IntermediateLanguage</a> to <a href="LLVM">LLVM</a> assembly, which is
further optimized and compiled to native object code by the <a href="LLVM">LLVM</a>
toolchain.</p></div>
<div class="paragraph"><p>It requires <a href="LLVM">LLVM</a> version 3.7 or greater to be installed.</p></div>
<div class="paragraph"><p>In benchmarks performed on the <a href="RunningOnAMD64">AMD64</a> architecture,
code size with this generator is usually slightly smaller than either
the <a href="AMD64Codegen">native</a> or the <a href="CCodegen">C</a> code generators. Compile
time is worse than <a href="AMD64Codegen">native</a>, but slightly better than
<a href="CCodegen">C</a>. Run time is often better than either <a href="AMD64Codegen">native</a>
or <a href="CCodegen">C</a>.</p></div>
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<h2 id="_implementation">Implementation</h2>
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<div class="ulist"><ul>
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<p>
<a href="https://github.com/MLton/mlton/blob/master/mlton/codegen/llvm-codegen/llvm-codegen.sig"><span class="monospaced">llvm-codegen.sig</span></a>
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<p>
<a href="https://github.com/MLton/mlton/blob/master/mlton/codegen/llvm-codegen/llvm-codegen.fun"><span class="monospaced">llvm-codegen.fun</span></a>
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<h2 id="_details_and_notes">Details and Notes</h2>
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<div class="paragraph"><p>The <a href="LLVMCodegen">LLVMCodegen</a> was initially developed by Brian Leibig (see
<a href="References#Leibig13">An LLVM Back-end for MLton</a>).</p></div>
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