Diapolo/cgminer — comment on commit 6a59c958dbe4e2b4f34c9967c0db96a69b3e763f
File:  line 0
By Diapolo:

Yes, I looked at the GPU ISA and the "legacy" method is faster. The
nonce generation code is slower by 1 instruction v_lshlrev_b32(), which
seems to be a bit-shift. But the code to generate W[0] is faster by 1x
v_lshrrev_b32(), 2x v_alignbit_b32() - rotations and 1x v_xor_b32, but
this only works if the nonces are ongoing and differ by 1.

Am 23.02.2012 22:15, schrieb Con Kolivas:
> Are you sure this legacy way is faster? I'm not convinced on that.
>
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