Perl-совместимые регулярные выражения (Perl-compatible regular expressions)
SAVING AND RESTORING COMPILED PATTERNS
The code that is generated by the JIT compiler is architecture-
specific, and is also position dependent. For those reasons it
cannot be saved (in a file or database) and restored later like
the bytecode and other data of a compiled pattern. Saving and
restoring compiled patterns is not something many people do. More
detail about this facility is given in the pcreprecompile
documentation. It should be possible to run pcre_study() on a
saved and restored pattern, and thereby recreate the JIT data,
but because JIT compilation uses significant resources, it is
probably not worth doing this; you might as well recompile the
original pattern.
