25.12.2015 13:40, Dimitry Sibiryakov wrote:
> 25.12.2015 12:12, Dimitry Sibiryakov wrote:
>> You'd better try final attached variant yourself.
>
> BTW, MSVC2010 32 bits showed the worst result: only 2.5x speed up while
> GCC -O3 gave 5x.
> Vlad, could you try it with MSVC2013?..
>
MSVC13, /02 /Oi, Intel Core i3-4130T, 32 bit - Release build
min max
original 31 234
unrolled 31 62
unrolled2 15 47
crc32 0 125
crc32" 0 31
crc32" used _mm_crc32_u32, _mm_crc32_u16 and _mm_crc32_u8 when appropriate
Regards,
Vlad
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