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97 lines
4.3 KiB
HTML
97 lines
4.3 KiB
HTML
4 years ago
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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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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>Miscellaneous Register Hooks (GNU Compiler Collection (GCC) Internals)</title>
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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="Stack-and-Calling.html#Stack-and-Calling" rel="up" title="Stack and Calling">
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<link href="Varargs.html#Varargs" rel="next" title="Varargs">
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<link href="Stack-Smashing-Protection.html#Stack-Smashing-Protection" rel="prev" title="Stack Smashing Protection">
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<body lang="en">
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<a name="Miscellaneous-Register-Hooks"></a>
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<div class="header">
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<p>
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Previous: <a href="Stack-Smashing-Protection.html#Stack-Smashing-Protection" accesskey="p" rel="prev">Stack Smashing Protection</a>, Up: <a href="Stack-and-Calling.html#Stack-and-Calling" accesskey="u" rel="up">Stack and Calling</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="Miscellaneous-register-hooks"></a>
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<h4 class="subsection">18.9.16 Miscellaneous register hooks</h4>
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<a name="index-miscellaneous-register-hooks"></a>
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<dl>
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<dt><a name="index-TARGET_005fCALL_005fFUSAGE_005fCONTAINS_005fNON_005fCALLEE_005fCLOBBERS"></a>Target Hook: <em>bool</em> <strong>TARGET_CALL_FUSAGE_CONTAINS_NON_CALLEE_CLOBBERS</strong></dt>
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<dd><p>Set to true if each call that binds to a local definition explicitly
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clobbers or sets all non-fixed registers modified by performing the call.
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That is, by the call pattern itself, or by code that might be inserted by the
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linker (e.g. stubs, veneers, branch islands), but not including those
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modifiable by the callee. The affected registers may be mentioned explicitly
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in the call pattern, or included as clobbers in CALL_INSN_FUNCTION_USAGE.
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The default version of this hook is set to false. The purpose of this hook
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is to enable the fipa-ra optimization.
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</p></dd></dl>
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</body>
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</html>
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