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Introducing
lsb_bb
. It's a function that return a value equalsquare_bb(lsb(bb))
, but it uses fewer instruction. It should speed up more on older processors like armv7-a Clang.Passed STC:
LLR: 2.93 (-2.94,2.94) {-0.25,1.25}
Total: 213200 W: 19171 L: 18753 D: 175276
Ptnml(0-2): 680, 14513, 75831, 14861, 715
https://tests.stockfishchess.org/tests/view/604bc7632433018de7a38982
No functional change