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