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82 lines
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<title>Match and Simplify - GNU Compiler Collection (GCC) Internals</title>
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<a name="Match-and-Simplify"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="Funding.html#Funding">Funding</a>,
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Previous: <a rel="previous" accesskey="p" href="LTO.html#LTO">LTO</a>,
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<h2 class="chapter">25 Match and Simplify</h2>
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<p><a name="index-Match-and-Simplify-5111"></a>
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The GIMPLE and GENERIC pattern matching project match-and-simplify
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tries to address several issues.
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<ol type=1 start=1>
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<li>unify expression simplifications currently spread and duplicated
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over separate files like fold-const.c, gimple-fold.c and builtins.c
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<li>allow for a cheap way to implement building and simplifying
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non-trivial GIMPLE expressions, avoiding the need to go through
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building and simplifying GENERIC via fold_buildN and then
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gimplifying via force_gimple_operand
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</ol>
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<p>To address these the project introduces a simple domain specific language
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to write expression simplifications from which code targeting GIMPLE
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and GENERIC is auto-generated. The GENERIC variant follows the
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fold_buildN API while for the GIMPLE variant and to address 2) new
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APIs are introduced.
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<ul class="menu">
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<li><a accesskey="1" href="GIMPLE-API.html#GIMPLE-API">GIMPLE API</a>
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<li><a accesskey="2" href="The-Language.html#The-Language">The Language</a>
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