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- <a name="Function-Specific-Option-Pragmas-1"></a>
- <h4 class="subsection">6.62.15 Function Specific Option Pragmas</h4>
- <dl compact="compact">
- <dt><code>#pragma GCC target (<var>"string"</var>...)</code></dt>
- <dd><a name="index-pragma-GCC-target"></a>
- <p>This pragma allows you to set target specific options for functions
- defined later in the source file. One or more strings can be
- specified. Each function that is defined after this point is as
- if <code>attribute((target("STRING")))</code> was specified for that
- function. The parenthesis around the options is optional.
- See <a href="Function-Attributes.html#Function-Attributes">Function Attributes</a>, for more information about the
- <code>target</code> attribute and the attribute syntax.
- </p>
- <p>The <code>#pragma GCC target</code> pragma is presently implemented for
- x86, PowerPC, and Nios II targets only.
- </p></dd>
- </dl>
- <dl compact="compact">
- <dt><code>#pragma GCC optimize (<var>"string"</var>...)</code></dt>
- <dd><a name="index-pragma-GCC-optimize"></a>
- <p>This pragma allows you to set global optimization options for functions
- defined later in the source file. One or more strings can be
- specified. Each function that is defined after this point is as
- if <code>attribute((optimize("STRING")))</code> was specified for that
- function. The parenthesis around the options is optional.
- See <a href="Function-Attributes.html#Function-Attributes">Function Attributes</a>, for more information about the
- <code>optimize</code> attribute and the attribute syntax.
- </p></dd>
- </dl>
- <dl compact="compact">
- <dt><code>#pragma GCC push_options</code></dt>
- <dt><code>#pragma GCC pop_options</code></dt>
- <dd><a name="index-pragma-GCC-push_005foptions"></a>
- <a name="index-pragma-GCC-pop_005foptions"></a>
- <p>These pragmas maintain a stack of the current target and optimization
- options. It is intended for include files where you temporarily want
- to switch to using a different ‘<samp>#pragma GCC target</samp>’ or
- ‘<samp>#pragma GCC optimize</samp>’ and then to pop back to the previous
- options.
- </p></dd>
- </dl>
- <dl compact="compact">
- <dt><code>#pragma GCC reset_options</code></dt>
- <dd><a name="index-pragma-GCC-reset_005foptions"></a>
- <p>This pragma clears the current <code>#pragma GCC target</code> and
- <code>#pragma GCC optimize</code> to use the default switches as specified
- on the command line.
- </p></dd>
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