Test of CRC32 instruction

[MichaelW]

Running on my POS Windows 8.1-64, 2.16Ghz Celeron laptop and passing the test buffer one byte at a time, the CRC32 instruction did not have any speed advantage over the table version. While I didn't have time to test this, or determine how to encode the instruction, presumably it's possible to pass 4 bytes at a time making the instruction 4 times faster.

[jj2007]

Intel(R) Core(TM) i5-2450M CPU @ 2.50GHz (MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AVX)

E3069283h
E3069283h

100 cycles, crc_reflected
29 cycles, crc_32

[sinsi]

i7-4790

E3069283h
E3069283h

37 cycles, crc_reflected
15 cycles, crc_32

[TouEnMasm]

Intel(R) Core(TM) i3-4150 CPU @ 3.50GHz
Microsoft Windows 10 Famille Version: 10.0.10240

E3069283h
E3069283h

93 cycles, crc_reflected
11 cycles, crc_32

Press any key to continue ...

[Siekmanski]

 Intel(R) Core(TM) i7-4930K CPU @ 3.40GHz
Windows 8.1

E3069283h
E3069283h

44 cycles, crc_reflected
26 cycles, crc_32