are written for use where JIT is known to be
available, and which need the best possible performance, can instead use a
"fast path" API to call JIT execution directly instead of calling
<b>pcre_exec()</b> (obviously only for patterns that have been successfully
studied by JIT).
</P>
<P>
The fast path function is called <b>pcre_jit_exec()</b>, and it takes exactly
the same arguments as <b>pcre_exec()</b>, plus one additional argument that
must point to a JIT stack. The JIT stack arrangements described above 