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| <a name="Controlling-which-passes-are-being-run"></a> |
| <h3 class="section">23.8 Controlling which passes are being run</h3> |
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| <p>After the original gate function for a pass is called, its result |
| - the gate status - is stored as an integer. |
| Then the event <code>PLUGIN_OVERRIDE_GATE</code> is invoked, with a pointer |
| to the gate status in the <code>gcc_data</code> parameter to the callback function. |
| A nonzero value of the gate status means that the pass is to be executed. |
| You can both read and write the gate status via the passed pointer. |
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