[U-Boot] [PATCH] crc32: Impl. linux optimized crc32()

[Wolfgang Denk]

Dear Joakim Tjernlund,

In message <1257263550-21504-1-git-send-email-Joakim.Tjernlund at transmode.se> you wrote:
> Ported over the more efficient linux crc32() function.
> A quick comparsion on ppc:
> After changing the old crc32 to do 4 bytes in the
> inner loop to be able to compare with new version one can note:
> - old inner loop has 61 insn, new has 19 insn.
> - new crc32 does one 32 bit load of data to crc while
>   the old does four 8 bits loads.
> - size is bit bigger for the new crc32:
>   1392(old) 1428(new) of text. Can probably be shrunk
>   somewhat by inlining crc32().

The Purpose of Computing is Insight, Not Numbers.

So how much faster does the new code run, on a real machine? How much
time can be saved to mount a real JFFS2 file system, or to checksum a
reall image file?

Best regards,

Wolfgang Denk

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