X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fsearch.cpp;h=19955a8622e9b8fe825f504e9ccea333a86aec28;hb=5cbcff55cc3a2ff78dd83e7a3f94c5414946f82c;hp=152de13c861d6689f803327424c8a419db79b19c;hpb=a1b62d68ec59aae504a9e39bfd3a7dfa4a831d29;p=stockfish

diff --git a/src/search.cpp b/src/search.cpp
index 152de13c..19955a86 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -33,7 +33,7 @@
 #include "timeman.h"
 #include "thread.h"
 #include "tt.h"
-#include "ucioption.h"
+#include "uci.h"
 
 namespace Search {
 
@@ -140,8 +140,8 @@ void Search::init() {
   // Init futility move count array
   for (d = 0; d < 32; ++d)
   {
-      FutilityMoveCounts[0][d] = int(2.4 + 0.222 * pow(d * 2 + 0.00, 1.8));
-      FutilityMoveCounts[1][d] = int(3.0 + 0.300 * pow(d * 2 + 0.98, 1.8));
+      FutilityMoveCounts[0][d] = int(2.4 + 0.773 * pow(d + 0.00, 1.8));
+      FutilityMoveCounts[1][d] = int(2.9 + 1.045 * pow(d + 0.49, 1.8));
   }
 }
 
@@ -788,6 +788,9 @@ moves_loop: // When in check and at SpNode search starts from here
           }
       }
 
+      // Speculative prefetch as early as possible
+      prefetch((char*)TT.first_entry(pos.key_after(move)));
+
       // Check for legality just before making the move
       if (!RootNode && !SpNode && !pos.legal(move, ci.pinned))
       {
@@ -1137,6 +1140,9 @@ moves_loop: // When in check and at SpNode search starts from here
           &&  pos.see_sign(move) < VALUE_ZERO)
           continue;
 
+      // Speculative prefetch as early as possible
+      prefetch((char*)TT.first_entry(pos.key_after(move)));
+
       // Check for legality just before making the move
       if (!pos.legal(move, ci.pinned))
           continue;