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diff --git a/share/doc/gccint/LTO-Testing.html b/share/doc/gccint/LTO-Testing.html new file mode 100644 index 0000000..ddb1422 --- /dev/null +++ b/share/doc/gccint/LTO-Testing.html @@ -0,0 +1,130 @@ +<!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: LTO Testing</title> + +<meta name="description" content="GNU Compiler Collection (GCC) Internals: LTO Testing"> +<meta name="keywords" content="GNU Compiler Collection (GCC) Internals: LTO Testing"> +<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="Testsuites.html#Testsuites" rel="up" title="Testsuites"> +<link href="gcov-Testing.html#gcov-Testing" rel="next" title="gcov Testing"> +<link href="C-Tests.html#C-Tests" rel="previous" title="C Tests"> +<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="LTO-Testing"></a> +<div class="header"> +<p> +Next: <a href="gcov-Testing.html#gcov-Testing" accesskey="n" rel="next">gcov Testing</a>, Previous: <a href="C-Tests.html#C-Tests" accesskey="p" rel="previous">C Tests</a>, Up: <a href="Testsuites.html#Testsuites" accesskey="u" rel="up">Testsuites</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="Support-for-testing-link_002dtime-optimizations"></a> +<h3 class="section">7.5 Support for testing link-time optimizations</h3> + +<p>Tests for link-time optimizations usually require multiple source files +that are compiled separately, perhaps with different sets of options. +There are several special-purpose test directives used for these tests. +</p> +<dl compact="compact"> +<dt><code>{ dg-lto-do <var>do-what-keyword</var> }</code></dt> +<dd><p><var>do-what-keyword</var> specifies how the test is compiled and whether +it is executed. It is one of: +</p> +<dl compact="compact"> +<dt><code>assemble</code></dt> +<dd><p>Compile with <samp>-c</samp> to produce a relocatable object file. +</p></dd> +<dt><code>link</code></dt> +<dd><p>Compile, assemble, and link to produce an executable file. +</p></dd> +<dt><code>run</code></dt> +<dd><p>Produce and run an executable file, which is expected to return +an exit code of 0. +</p></dd> +</dl> + +<p>The default is <code>assemble</code>. That can be overridden for a set of +tests by redefining <code>dg-do-what-default</code> within the <code>.exp</code> +file for those tests. +</p> +<p>Unlike <code>dg-do</code>, <code>dg-lto-do</code> does not support an optional +‘<samp>target</samp>’ or ‘<samp>xfail</samp>’ list. Use <code>dg-skip-if</code>, +<code>dg-xfail-if</code>, or <code>dg-xfail-run-if</code>. +</p> +</dd> +<dt><code>{ dg-lto-options { { <var>options</var> } [{ <var>options</var> }] } [{ target <var>selector</var> }]}</code></dt> +<dd><p>This directive provides a list of one or more sets of compiler options +to override <var>LTO_OPTIONS</var>. Each test will be compiled and run with +each of these sets of options. +</p> +</dd> +<dt><code>{ dg-extra-ld-options <var>options</var> [{ target <var>selector</var> }]}</code></dt> +<dd><p>This directive adds <var>options</var> to the linker options used. +</p> +</dd> +<dt><code>{ dg-suppress-ld-options <var>options</var> [{ target <var>selector</var> }]}</code></dt> +<dd><p>This directive removes <var>options</var> from the set of linker options used. +</p></dd> +</dl> + + + + +</body> +</html> |