Comment 41 for bug 1999551
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| Julian Schroeder (jumaco) wrote Re: glibc: backport AArch64 memcmp improvements | #41 |
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0e1f616
(Get the code!)
Hi Simon,
my coworker Geoff pointed out the GP reg to Neon copro register transfers on A54 and A72 are very slow, in the order of 9 CPU cycles. I'm looking into an ifunc implementation so we can stay clear of Neon if we run on < ARM Neoverse cores.