If there is one candidate in Perl's standard library I would rewrite in XS, it is Exporter.

Common subexpression elimination would help my code more; I'm not that concerned about startup time anywhere but tests.

In reply to Re^4: Perl 5 Optimizing Compiler, Part 2 by chromatic
in thread Perl 5 Optimizing Compiler, Part 2 by Will_the_Chill

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