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98 lines
4.2 KiB
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98 lines
4.2 KiB
HTML
4 years ago
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<html lang="en">
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<title>Dump examples - GNU Compiler Collection (GCC) Internals</title>
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<meta name="description" content="GNU Compiler Collection (GCC) Internals">
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<link title="Top" rel="start" href="index.html#Top">
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<link rel="up" href="Optimization-info.html#Optimization-info" title="Optimization info">
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<link rel="prev" href="Dump-types.html#Dump-types" title="Dump types">
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<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
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<!--
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Copyright (C) 1988-2015 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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funds for GNU development.-->
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</head>
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<body>
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<div class="node">
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<a name="Dump-examples"></a>
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<p>
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Previous: <a rel="previous" accesskey="p" href="Dump-types.html#Dump-types">Dump types</a>,
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Up: <a rel="up" accesskey="u" href="Optimization-info.html#Optimization-info">Optimization info</a>
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<hr>
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</div>
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<h4 class="subsection">9.7.6 Dump examples</h4>
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<p><a name="index-dump-examples-1711"></a>
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<pre class="smallexample"> gcc -O3 -fopt-info-missed=missed.all
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</pre>
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<p>outputs missed optimization report from all the passes into
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<samp><span class="file">missed.all</span></samp>.
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<p>As another example,
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<pre class="smallexample"> gcc -O3 -fopt-info-inline-optimized-missed=inline.txt
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</pre>
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<p>will output information about missed optimizations as well as
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optimized locations from all the inlining passes into
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<samp><span class="file">inline.txt</span></samp>.
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<p>If the <var>filename</var> is provided, then the dumps from all the
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applicable optimizations are concatenated into the <samp><span class="file">filename</span></samp>.
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Otherwise the dump is output onto <samp><span class="file">stderr</span></samp>. If <var>options</var> is
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omitted, it defaults to <samp><span class="option">all-all</span></samp>, which means dump all
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available optimization info from all the passes. In the following
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example, all optimization info is output on to <samp><span class="file">stderr</span></samp>.
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<pre class="smallexample"> gcc -O3 -fopt-info
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</pre>
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<p>Note that <samp><span class="option">-fopt-info-vec-missed</span></samp> behaves the same as
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<samp><span class="option">-fopt-info-missed-vec</span></samp>.
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<p>As another example, consider
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<pre class="smallexample"> gcc -fopt-info-vec-missed=vec.miss -fopt-info-loop-optimized=loop.opt
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</pre>
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<p>Here the two output file names <samp><span class="file">vec.miss</span></samp> and <samp><span class="file">loop.opt</span></samp> are
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in conflict since only one output file is allowed. In this case, only
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the first option takes effect and the subsequent options are
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ignored. Thus only the <samp><span class="file">vec.miss</span></samp> is produced which containts
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dumps from the vectorizer about missed opportunities.
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<!-- Copyright (C) 2004-2015 Free Software Foundation, Inc. -->
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<!-- This is part of the GCC manual. -->
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<!-- For copying conditions, see the file gcc.texi. -->
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<!-- GENERIC -->
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