[PATCH v2] ARM: Add Cortex-A15 optimized NEON and VFP memcpy routines, with IFUNC.

Richard Henderson rth@twiddle.net
Thu Apr 18 07:42:00 GMT 2013


On 2013-04-17 17:53, Will Newton wrote:
>>From reading the comments of the code v7 is required for NEON, v6 is
> required for VFP and unaligned access is required. The unaligned
> access requirement may be a problem on v5 I'm not sure. NB: I did not
> write the memcpy code so I have not looked at it in great detail.

Neon won't exist before v7, true.  But then it ought not be advertized
by the hwcap either, so it won't be selected.

Anyone got a raspberry pi to benchmark the current and the new here?


r~



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