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Date: Thu, 11 Jul 2013 08:34:03 +1200
From: Andre Renaud <>
Subject: Re: Thinking about release

>> What also might be worth testing is whether GCC can compete if you
>> just give it a naive loop (not the fancy pseudo-vectorized stuff
>> currently in musl) and good CFLAGS. I know on x86 I was able to beat
>> the fanciest asm strlen I could come up with simply by writing the
>> naive loop in C and unrolling it a lot.
> Duff's device!

That was exactly my first idea too, but interestingly it turns out not
to have really added any performance improvement. Looking at the
assembler, with -O3, gcc does a pretty good job of unrolling as it is.


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