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109 lines
5.6 KiB
HTML
109 lines
5.6 KiB
HTML
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<head>
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<title>Loop Analysis and Representation (GNU Compiler Collection (GCC) Internals)</title>
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<link href="index.html#Top" rel="start" title="Top">
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<link href="Option-Index.html#Option-Index" rel="index" title="Option Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="index.html#Top" rel="up" title="Top">
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<link href="Loop-representation.html#Loop-representation" rel="next" title="Loop representation">
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<a name="Loop-Analysis-and-Representation"></a>
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<div class="header">
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<p>
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Next: <a href="Machine-Desc.html#Machine-Desc" accesskey="n" rel="next">Machine Desc</a>, Previous: <a href="Control-Flow.html#Control-Flow" accesskey="p" rel="prev">Control Flow</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
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<hr>
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<a name="Analysis-and-Representation-of-Loops"></a>
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<h2 class="chapter">16 Analysis and Representation of Loops</h2>
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<p>GCC provides extensive infrastructure for work with natural loops, i.e.,
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strongly connected components of CFG with only one entry block. This
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chapter describes representation of loops in GCC, both on GIMPLE and in
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RTL, as well as the interfaces to loop-related analyses (induction
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variable analysis and number of iterations analysis).
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</p>
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<table class="menu" border="0" cellspacing="0">
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<tr><td align="left" valign="top">• <a href="Loop-representation.html#Loop-representation" accesskey="1">Loop representation</a>:</td><td> </td><td align="left" valign="top">Representation and analysis of loops.
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Loop-querying.html#Loop-querying" accesskey="2">Loop querying</a>:</td><td> </td><td align="left" valign="top">Getting information about loops.
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Loop-manipulation.html#Loop-manipulation" accesskey="3">Loop manipulation</a>:</td><td> </td><td align="left" valign="top">Loop manipulation functions.
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</td></tr>
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<tr><td align="left" valign="top">• <a href="LCSSA.html#LCSSA" accesskey="4">LCSSA</a>:</td><td> </td><td align="left" valign="top">Loop-closed SSA form.
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Scalar-evolutions.html#Scalar-evolutions" accesskey="5">Scalar evolutions</a>:</td><td> </td><td align="left" valign="top">Induction variables on GIMPLE.
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</td></tr>
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<tr><td align="left" valign="top">• <a href="loop_002div.html#loop_002div" accesskey="6">loop-iv</a>:</td><td> </td><td align="left" valign="top">Induction variables on RTL.
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Number-of-iterations.html#Number-of-iterations" accesskey="7">Number of iterations</a>:</td><td> </td><td align="left" valign="top">Number of iterations analysis.
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Dependency-analysis.html#Dependency-analysis" accesskey="8">Dependency analysis</a>:</td><td> </td><td align="left" valign="top">Data dependency analysis.
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</td></tr>
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</table>
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</body>
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