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Author SHA1 Message Date
syzygyandMarco Costalba ca67752645 Per-thread TB hit counters 
Use a per-thread counter to reduce contention
with many cores and endgame positions.

Measured around 1% speed-up on a 12 core and 8%
on 28 cores with 6-men, searching on:
 7R/1p3k2/2p2P2/3nR1P1/8/3b1P2/7K/r7 b - - 3 38

Also retire the unused set_nodes_searched() and fix
a couple of return types and naming conventions.

No functional change.
 2016-10-21 06:15:45 +02:00
syzygyandMarco Costalba 438805aee8 Integrate next_stage() logic into next_move() 
Measured bench speed up goes from 0,7% to 2%,
given the unreliable measure a reverse simmplification
test was done on fishtest:

master vs patch
LLR: -2.94 (-2.94,2.94) [-3.00,1.00]
Total: 15499 W: 2685 L: 2867 D: 9947

Test result is positive, master is weaker.

No functional change.
 2016-09-13 07:14:09 +02:00
syzygyandMarco Costalba ca6c9f85a5 Change from [Color][PieceType] to [Piece] 
Speed up of almost 1% in both normal and
pgo builds.

No functional change.
 2016-09-04 09:22:09 +02:00