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<html lang="en"><head><title>Using the GNU Compiler Collection (GCC)</title><meta http-equiv="Content-Type" content="text/html"><meta name="description" content="Using the GNU Compiler Collection (GCC)"><meta name="generator" content="makeinfo 4.6"><!--Copyright © 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc. <p>Permission is granted to copy, distribute and/or modify this documentunder the terms of the GNU Free Documentation License, Version 1.2 orany later version published by the Free Software Foundation; with theInvariant Sections being "GNU General Public License" and "FundingFree Software", the Front-Cover texts being (a) (see below), and withthe Back-Cover Texts being (b) (see below). A copy of the license isincluded in the section entitled "GNU Free Documentation License". <p>(a) The FSF's Front-Cover Text is: <p>A GNU Manual <p>(b) The FSF's Back-Cover Text is: <p>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.--><meta http-equiv="Content-Style-Type" content="text/css"><style type="text/css"><!-- pre.display { font-family:inherit } pre.format { font-family:inherit } pre.smalldisplay { font-family:inherit; font-size:smaller } pre.smallformat { font-family:inherit; font-size:smaller } pre.smallexample { font-size:smaller } pre.smalllisp { font-size:smaller }--></style></head><body><div class="node"><p>Node: <a name="Alpha%20Built-in%20Functions">Alpha Built-in Functions</a>,Next: <a rel="next" accesskey="n" href="ARM-Built-in-Functions.html#ARM%20Built-in%20Functions">ARM Built-in Functions</a>,Up: <a rel="up" accesskey="u" href="Target-Builtins.html#Target%20Builtins">Target Builtins</a><hr><br></div><h3 class="subsection">Alpha Built-in Functions</h4><p>These built-in functions are available for the Alpha family ofprocessors, depending on the command-line switches used. <p>The following built-in functions are always available. Theyall generate the machine instruction that is part of the name.<pre class="smallexample"> long __builtin_alpha_implver (void) long __builtin_alpha_rpcc (void) long __builtin_alpha_amask (long) long __builtin_alpha_cmpbge (long, long) long __builtin_alpha_extbl (long, long) long __builtin_alpha_extwl (long, long) long __builtin_alpha_extll (long, long) long __builtin_alpha_extql (long, long) long __builtin_alpha_extwh (long, long) long __builtin_alpha_extlh (long, long) long __builtin_alpha_extqh (long, long) long __builtin_alpha_insbl (long, long) long __builtin_alpha_inswl (long, long) long __builtin_alpha_insll (long, long) long __builtin_alpha_insql (long, long) long __builtin_alpha_inswh (long, long) long __builtin_alpha_inslh (long, long) long __builtin_alpha_insqh (long, long) long __builtin_alpha_mskbl (long, long) long __builtin_alpha_mskwl (long, long) long __builtin_alpha_mskll (long, long) long __builtin_alpha_mskql (long, long) long __builtin_alpha_mskwh (long, long) long __builtin_alpha_msklh (long, long) long __builtin_alpha_mskqh (long, long) long __builtin_alpha_umulh (long, long) long __builtin_alpha_zap (long, long) long __builtin_alpha_zapnot (long, long) </pre> <p>The following built-in functions are always with <code>-mmax</code>or <code>-mcpu=</code><var>cpu</var><code></code> where <var>cpu</var> is <code>pca56</code> orlater. They all generate the machine instruction that is partof the name.<pre class="smallexample"> long __builtin_alpha_pklb (long) long __builtin_alpha_pkwb (long) long __builtin_alpha_unpkbl (long) long __builtin_alpha_unpkbw (long) long __builtin_alpha_minub8 (long, long) long __builtin_alpha_minsb8 (long, long) long __builtin_alpha_minuw4 (long, long) long __builtin_alpha_minsw4 (long, long) long __builtin_alpha_maxub8 (long, long) long __builtin_alpha_maxsb8 (long, long) long __builtin_alpha_maxuw4 (long, long) long __builtin_alpha_maxsw4 (long, long) long __builtin_alpha_perr (long, long) </pre> <p>The following built-in functions are always with <code>-mcix</code>or <code>-mcpu=</code><var>cpu</var><code></code> where <var>cpu</var> is <code>ev67</code> orlater. They all generate the machine instruction that is partof the name.<pre class="smallexample"> long __builtin_alpha_cttz (long) long __builtin_alpha_ctlz (long) long __builtin_alpha_ctpop (long) </pre> <p>The following builtins are available on systems that use the OSF/1PALcode. Normally they invoke the <code>rduniq</code> and <code>wruniq</code>PAL calls, but when invoked with <code>-mtls-kernel</code>, they invoke<code>rdval</code> and <code>wrval</code>.<pre class="smallexample"> void *__builtin_thread_pointer (void) void __builtin_set_thread_pointer (void *) </pre> </body></html>⌨️ 快捷键说明
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