PROJECT TO INVESTIGATE POPCOUNT EFFICIENCY BY IMPLEMENTATIONS.

POPCOUNTの速度を検証するプロジェクト

USAGE

Compile with:

$ make

To test:

$ ./test2

RESULT

Core i7 3770K 3.5GHz, Windows 7 SP1, MinGW64

$ ./test2
count=100000000
initialized.
popcount: 1753 clock (retval=399999888)
popcount_sse4: 1005 clock (retval=399999888)
popcount_gnu32: 1012 clock (retval=399999888)
popcount_sse4_64: 520 clock (retval=399999888)
popcount_gnu64: 526 clock (retval=399999888)