Re: [PATCH] ARC: io.h: Implement reads{x}()/writes{x}()

From: Jose Abreu
Date: Thu Nov 29 2018 - 08:20:01 EST

On 29-11-2018 13:11, Jose Abreu wrote
>> I was thinking of the (probably likely) case where the pointer is
>> actually aligned.
>> An extra check for ((pointer) & 3) is almost certainly a 'win'
>> over the byte accesses and shift/mask/or use by get/put_unaligned().

Oh, sorry. I was misunderstanding. You mean like adding a check
for unaligned and use get/put_unaligned() only in that case right ?


>> The IO accesses probably dominate making more complex optimisations
>> less likely to have any benefit.
>> David
>> -
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