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anematodeandJoost VandeVondele
0111d11e23
Adds a `RelaxedAtomic` wrapper around either `T` or `std::atomic<T>` and `USE_SLOPPY_ATOMICS` preprocessor define. The intent of this flag is to allow easy disabling of atomics on WASM, where even relaxed atomics are expensive because all atomics have `seq_cst` semantics. Passed non regression STC LLR: 2.99 (-2.94,2.94) <-1.75,0.25> Total: 50624 W: 12976 L: 12776 D: 24872 Ptnml(0-2): 112, 5445, 14005, 5631, 119 https://tests.stockfishchess.org/tests/view/6a1f690e818cacc1db0ad2c7 Passed non-regression STC SMP LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 163696 W: 41514 L: 41438 D: 80744 Ptnml(0-2): 162, 18272, 44904, 18348, 162 https://tests.stockfishchess.org/tests/view/6a21fb97351b79f679cc44b3 Using this class for the TT also allows us to remove the TSAN suppressions, since the UB is fixed. closes https://github.com/official-stockfish/Stockfish/pull/6877 No functional change