Compiling a short and simple regex that consists of only one string literal is so fast that you'll probably have trouble to come up with a benchmark to measure it. So if there is a difference, it'll be too small to be easily observable.

I also think that Perl has an internal cache that avoids recompiling the same regex all over again.

Perl 6 - second systems done right

In reply to Re^3: Problem with pre-compiled regex by moritz
in thread Problem with pre-compiled regex by saranrsm

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