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100 lines
4.5 KiB
HTML
100 lines
4.5 KiB
HTML
4 years ago
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- Copyright (C) 1988-2018 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3 or
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any later version published by the Free Software Foundation; with the
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Invariant Sections being "Funding Free Software", the Front-Cover
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Texts being (a) (see below), and with the Back-Cover Texts being (b)
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(see below). A copy of the license is included in the section entitled
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"GNU Free Documentation License".
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(a) The FSF's Front-Cover Text is:
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A GNU Manual
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(b) The FSF's Back-Cover Text is:
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You have freedom to copy and modify this GNU Manual, like GNU
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software. Copies published by the Free Software Foundation raise
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funds for GNU development. -->
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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>Iterators (GNU Compiler Collection (GCC) Internals)</title>
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<meta name="description" content="Iterators (GNU Compiler Collection (GCC) Internals)">
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<meta name="keywords" content="Iterators (GNU Compiler Collection (GCC) Internals)">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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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="Machine-Desc.html#Machine-Desc" rel="up" title="Machine Desc">
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<link href="Mode-Iterators.html#Mode-Iterators" rel="next" title="Mode Iterators">
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<link href="Constant-Definitions.html#Constant-Definitions" rel="prev" title="Constant Definitions">
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</head>
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<body lang="en">
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<a name="Iterators"></a>
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<div class="header">
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<p>
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Previous: <a href="Constant-Definitions.html#Constant-Definitions" accesskey="p" rel="prev">Constant Definitions</a>, Up: <a href="Machine-Desc.html#Machine-Desc" accesskey="u" rel="up">Machine Desc</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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</div>
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<hr>
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<a name="Iterators-1"></a>
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<h3 class="section">17.23 Iterators</h3>
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<a name="index-iterators-in-_002emd-files"></a>
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<p>Ports often need to define similar patterns for more than one machine
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mode or for more than one rtx code. GCC provides some simple iterator
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facilities to make this process easier.
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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="Mode-Iterators.html#Mode-Iterators" accesskey="1">Mode Iterators</a>:</td><td> </td><td align="left" valign="top">Generating variations of patterns for different modes.
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Code-Iterators.html#Code-Iterators" accesskey="2">Code Iterators</a>:</td><td> </td><td align="left" valign="top">Doing the same for codes.
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Int-Iterators.html#Int-Iterators" accesskey="3">Int Iterators</a>:</td><td> </td><td align="left" valign="top">Doing the same for integers.
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Subst-Iterators.html#Subst-Iterators" accesskey="4">Subst Iterators</a>:</td><td> </td><td align="left" valign="top">Generating variations of patterns for define_subst.
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</td></tr>
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</table>
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</body>
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</html>
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