Re: [PATCH v6 3/4] powerpc/lib: implement strlen() in assembly

From: Christophe LEROY
Date: Tue Jun 12 2018 - 13:02:17 EST

Le 12/06/2018 Ã 16:53, Segher Boessenkool a ÃcritÂ:
On Tue, Jun 12, 2018 at 09:14:53AM +0000, Christophe Leroy wrote:
Not tested on PPC64.

It won't be acceptable until that happens. It also is likely quite bad
performance on all 64-bit CPUs from the last fifteen years or so. Or you
did nothing to prove otherwise, at least.

Will it be as bad as the generic implementation which does it byte per byte ?

I don't have any 64 bits target, can someone test it using the test app I have added in selftests ?

Or should I just leave it as is for 64 bits and just do the implementation for 32 bits until someone wants to try and do it for PPC64 ?


+ * Algorigthm: