 back to the interpretive code if JIT is not available. For
programs that need the best possible performance, there is also a "fast path"
API that is JIT-specific.
</P>
<P>
If your program may sometimes be linked with versions of PCRE that are older
than 8.20, but you want to use JIT when it is available, you can test
the values of PCRE_MAJOR and PCRE_MINOR, or the existence of a JIT macro such
as PCRE_CONFIG_JIT, for compile-time control of your code.
</P>
<br><a name="SEC4" href="#TOC1">SIMPLE USE OF JIT<