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97 lines
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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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<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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