From b73016bb41d4c2fad3126b2e0018d71a36e78331 Mon Sep 17 00:00:00 2001 From: snicolet Date: Fri, 16 Jun 2017 19:52:38 -0700 Subject: [PATCH] Prefetch earlier in qsearch() Closes #1139 --- src/search.cpp | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/src/search.cpp b/src/search.cpp index 51d3ae8c..aafe82a9 100644 --- a/src/search.cpp +++ b/src/search.cpp @@ -1256,6 +1256,9 @@ moves_loop: // When in check search starts from here { assert(is_ok(move)); + // Speculative prefetch as early as possible + prefetch(TT.first_entry(pos.key_after(move))); + givesCheck = type_of(move) == NORMAL && !pos.discovered_check_candidates() ? pos.check_squares(type_of(pos.piece_on(from_sq(move)))) & to_sq(move) : pos.gives_check(move); @@ -1297,9 +1300,6 @@ moves_loop: // When in check search starts from here && !pos.see_ge(move)) continue; - // Speculative prefetch as early as possible - prefetch(TT.first_entry(pos.key_after(move))); - // Check for legality just before making the move if (!pos.legal(move)) { -- 2.39.2