diff options
Diffstat (limited to 'share/doc/gccint/Selectors.html')
| -rw-r--r-- | share/doc/gccint/Selectors.html | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/share/doc/gccint/Selectors.html b/share/doc/gccint/Selectors.html new file mode 100644 index 0000000..504180b --- /dev/null +++ b/share/doc/gccint/Selectors.html @@ -0,0 +1,195 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> +<!-- Copyright (C) 1988-2023 Free Software Foundation, Inc. + +Permission is granted to copy, distribute and/or modify this document +under the terms of the GNU Free Documentation License, Version 1.3 or +any later version published by the Free Software Foundation; with the +Invariant Sections being "Funding Free Software", the Front-Cover +Texts being (a) (see below), and with the Back-Cover Texts being (b) +(see below). A copy of the license is included in the section entitled +"GNU Free Documentation License". + +(a) The FSF's Front-Cover Text is: + +A GNU Manual + +(b) The FSF's Back-Cover Text is: + +You have freedom to copy and modify this GNU Manual, like GNU + software. Copies published by the Free Software Foundation raise + funds for GNU development. --> +<!-- Created by GNU Texinfo 5.1, http://www.gnu.org/software/texinfo/ --> +<head> +<title>GNU Compiler Collection (GCC) Internals: Selectors</title> + +<meta name="description" content="GNU Compiler Collection (GCC) Internals: Selectors"> +<meta name="keywords" content="GNU Compiler Collection (GCC) Internals: Selectors"> +<meta name="resource-type" content="document"> +<meta name="distribution" content="global"> +<meta name="Generator" content="makeinfo"> +<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> +<link href="index.html#Top" rel="start" title="Top"> +<link href="Option-Index.html#Option-Index" rel="index" title="Option Index"> +<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> +<link href="Test-Directives.html#Test-Directives" rel="up" title="Test Directives"> +<link href="Effective_002dTarget-Keywords.html#Effective_002dTarget-Keywords" rel="next" title="Effective-Target Keywords"> +<link href="Directives.html#Directives" rel="previous" title="Directives"> +<style type="text/css"> +<!-- +a.summary-letter {text-decoration: none} +blockquote.smallquotation {font-size: smaller} +div.display {margin-left: 3.2em} +div.example {margin-left: 3.2em} +div.indentedblock {margin-left: 3.2em} +div.lisp {margin-left: 3.2em} +div.smalldisplay {margin-left: 3.2em} +div.smallexample {margin-left: 3.2em} +div.smallindentedblock {margin-left: 3.2em; font-size: smaller} +div.smalllisp {margin-left: 3.2em} +kbd {font-style:oblique} +pre.display {font-family: inherit} +pre.format {font-family: inherit} +pre.menu-comment {font-family: serif} +pre.menu-preformatted {font-family: serif} +pre.smalldisplay {font-family: inherit; font-size: smaller} +pre.smallexample {font-size: smaller} +pre.smallformat {font-family: inherit; font-size: smaller} +pre.smalllisp {font-size: smaller} +span.nocodebreak {white-space:nowrap} +span.nolinebreak {white-space:nowrap} +span.roman {font-family:serif; font-weight:normal} +span.sansserif {font-family:sans-serif; font-weight:normal} +ul.no-bullet {list-style: none} +--> +</style> + + +</head> + +<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000"> +<a name="Selectors"></a> +<div class="header"> +<p> +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="previous">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> +</div> +<hr> +<a name="Selecting-targets-to-which-a-test-applies"></a> +<h4 class="subsection">7.2.2 Selecting targets to which a test applies</h4> + +<p>Several test directives include <var>selector</var>s to limit the targets +for which a test is run or to declare that a test is expected to fail +on particular targets. +</p> +<p>A selector is: +</p><ul> +<li> one or more target triplets, possibly including wildcard characters; +use ‘<samp>*-*-*</samp>’ to match any target +</li><li> a single effective-target keyword (see <a href="Effective_002dTarget-Keywords.html#Effective_002dTarget-Keywords">Effective-Target Keywords</a>) +</li><li> a list of compiler options that should be included or excluded +(as described in more detail below) +</li><li> a logical expression +</li></ul> + +<p>Depending on the context, the selector specifies whether a test is +skipped and reported as unsupported or is expected to fail. A context +that allows either ‘<samp>target</samp>’ or ‘<samp>xfail</samp>’ also allows +‘<samp>{ target <var>selector1</var> xfail <var>selector2</var> }</samp>’ +to skip the test for targets that don’t match <var>selector1</var> and the +test to fail for targets that match <var>selector2</var>. +</p> +<p>A selector expression appears within curly braces and uses a single +logical operator: one of ‘<samp>!</samp>’, ‘<samp>&&</samp>’, or ‘<samp>||</samp>’. An +operand is one of the following: +</p> +<ul> +<li> another selector expression, in curly braces + +</li><li> an effective-target keyword, such as <code>lp64</code> + +</li><li> a single target triplet + +</li><li> a list of target triplets within quotes or curly braces + +</li><li> one of the following: + +<dl compact="compact"> +<dt>‘<samp>{ any-opts <var>opt1</var> … <var>optn</var> }</samp>’</dt> +<dd><p>Each of <var>opt1</var> to <var>optn</var> is a space-separated list of option globs. +The selector expression evaluates to true if, for one of these strings, +every glob in the string matches an option that was passed to the compiler. +For example: +</p> +<div class="smallexample"> +<pre class="smallexample">{ any-opts "-O3 -flto" "-O[2g]" } +</pre></div> + +<p>is true if any of the following are true: +</p> +<ul> +<li> <samp>-O2</samp> was passed to the compiler + +</li><li> <samp>-Og</samp> was passed to the compiler + +</li><li> both <samp>-O3</samp> and <samp>-flto</samp> were passed to the compiler +</li></ul> + +<p>This kind of selector can only be used within <code>dg-final</code> directives. +Use <code>dg-skip-if</code>, <code>dg-xfail-if</code> or <code>dg-xfail-run-if</code> to +skip whole tests based on options, or to mark them as expected to fail +with certain options. +</p> +</dd> +<dt>‘<samp>{ no-opts <var>opt1</var> … <var>optn</var> }</samp>’</dt> +<dd><p>As for <code>any-opts</code> above, each of <var>opt1</var> to <var>optn</var> is a +space-separated list of option globs. The selector expression +evaluates to true if, for all of these strings, there is at least +one glob that does not match an option that was passed to the compiler. +It is shorthand for: +</p> +<div class="smallexample"> +<pre class="smallexample">{ ! { any-opts <var>opt1</var> … <var>optn</var> } } +</pre></div> + +<p>For example: +</p> +<div class="smallexample"> +<pre class="smallexample">{ no-opts "-O3 -flto" "-O[2g]" } +</pre></div> + +<p>is true if all of the following are true: +</p> +<ul> +<li> <samp>-O2</samp> was not passed to the compiler + +</li><li> <samp>-Og</samp> was not passed to the compiler + +</li><li> at least one of <samp>-O3</samp> or <samp>-flto</samp> was not passed to the compiler +</li></ul> + +<p>Like <code>any-opts</code>, this kind of selector can only be used within +<code>dg-final</code> directives. +</p> +</dd> +</dl> +</li></ul> + +<p>Here are some examples of full target selectors: +</p> +<div class="smallexample"> +<pre class="smallexample">{ target { ! "hppa*-*-* ia64*-*-*" } } +{ target { powerpc*-*-* && lp64 } } +{ xfail { lp64 || vect_no_align } } +{ xfail { aarch64*-*-* && { any-opts "-O2" } } } +</pre></div> + +<hr> +<div class="header"> +<p> +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="previous">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> +</div> + + + +</body> +</html> |