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Even if it didn't turn that into a no-op, it won't make a whole lot of difference. A shift operation, even with loading and saving a variable from memory and then even with stack frame related overhead, will take maybe two dozen clock cycles on a bad day (cache misses et al) on modern CPUs. In comparison, even the simplest single operation in Perl will probably take a few hundred cycles (if not thousands). If reports are to be believed though, Perl6 will be much faster at this, and native Parrot code should be on a par with C. Makeshifts last the longest. In reply to Re^2: Believably slow..
by Aristotle
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