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115 lines
5.1 KiB
HTML
115 lines
5.1 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>Selectors (GNU Compiler Collection (GCC) Internals)</title>
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<meta name="description" content="Selectors (GNU Compiler Collection (GCC) Internals)">
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<meta name="keywords" content="Selectors (GNU Compiler Collection (GCC) Internals)">
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<meta name="resource-type" content="document">
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<meta name="distribution" content="global">
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<meta name="Generator" content="makeinfo">
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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="Test-Directives.html#Test-Directives" rel="up" title="Test Directives">
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<link href="Effective_002dTarget-Keywords.html#Effective_002dTarget-Keywords" rel="next" title="Effective-Target Keywords">
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<link href="Directives.html#Directives" rel="prev" title="Directives">
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<style type="text/css">
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a.summary-letter {text-decoration: none}
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span.nolinebreak {white-space: nowrap}
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span.roman {font-family: initial; font-weight: normal}
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span.sansserif {font-family: sans-serif; font-weight: normal}
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ul.no-bullet {list-style: none}
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-->
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</style>
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</head>
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<body lang="en">
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<a name="Selectors"></a>
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<div class="header">
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<p>
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Next: <a href="Effective_002dTarget-Keywords.html#Effective_002dTarget-Keywords" accesskey="n" rel="next">Effective-Target Keywords</a>, Previous: <a href="Directives.html#Directives" accesskey="p" rel="prev">Directives</a>, Up: <a href="Test-Directives.html#Test-Directives" accesskey="u" rel="up">Test Directives</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="Selecting-targets-to-which-a-test-applies"></a>
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<h4 class="subsection">7.2.2 Selecting targets to which a test applies</h4>
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<p>Several test directives include <var>selector</var>s to limit the targets
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for which a test is run or to declare that a test is expected to fail
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on particular targets.
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</p>
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<p>A selector is:
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</p><ul>
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<li> one or more target triplets, possibly including wildcard characters;
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use ‘<samp>*-*-*</samp>’ to match any target
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</li><li> a single effective-target keyword (see <a href="Effective_002dTarget-Keywords.html#Effective_002dTarget-Keywords">Effective-Target Keywords</a>)
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</li><li> a logical expression
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</li></ul>
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<p>Depending on the context, the selector specifies whether a test is
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skipped and reported as unsupported or is expected to fail. A context
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that allows either ‘<samp>target</samp>’ or ‘<samp>xfail</samp>’ also allows
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‘<samp>{ target <var>selector1</var> xfail <var>selector2</var> }</samp>’
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to skip the test for targets that don’t match <var>selector1</var> and the
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test to fail for targets that match <var>selector2</var>.
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</p>
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<p>A selector expression appears within curly braces and uses a single
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logical operator: one of ‘<samp>!</samp>’, ‘<samp>&&</samp>’, or ‘<samp>||</samp>’. An
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operand is another selector expression, an effective-target keyword,
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a single target triplet, or a list of target triplets within quotes or
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curly braces. For example:
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</p>
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<div class="smallexample">
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<pre class="smallexample">{ target { ! "hppa*-*-* ia64*-*-*" } }
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{ target { powerpc*-*-* && lp64 } }
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{ xfail { lp64 || vect_no_align } }
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</pre></div>
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</body>
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</html>
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