[arm] Do move-count pruning in probcut bench 6361568

official-stockfish/Stockfish@b873086
lantonov · May 10, 2018 · ea1193a · ea1193a
1 parent 7703357
commit ea1193a
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diff --git a/LinuxOS_binaries/armFishL_2018-05-09_v8 → LinuxOS_binaries/armFishL_2018-05-10_v8 b/LinuxOS_binaries/armFishL_2018-05-09_v8 → LinuxOS_binaries/armFishL_2018-05-10_v8
diff --git a/arm/SearchMacros.arm b/arm/SearchMacros.arm
@@ -31,6 +31,7 @@ macro Search PvNode, RootNode
     .extension          rd 1
     .success            rd 1    ; for tb
     .rbeta              rd 1
+	.probCutCount       rd 1
     .moved_piece_to_sq  rd 1
     .reductionOffset    rd 1
     .skipQuiets             rb 1    ; -1 for true
@@ -570,6 +571,7 @@ Display 2, "Search(alpha=%i1, beta=%i2, depth=%i8, cutNode=%i9) called%n"
 .9NoTTMove:
             str  x25, [x21, State.stage]
             str  w27, [x21, State.ttMove]
+            str  wzr, [sp, .probCutCount]
 .9moveloop:
             mov  w26, 0
     GetNextMove
@@ -580,6 +582,13 @@ Display 2, "Search(alpha=%i1, beta=%i2, depth=%i8, cutNode=%i9) called%n"
             cbz  w0, .9moveloop_done
              bl  Move_IsLegal
             cbz  w0, .9moveloop
+            ldr  w22,[sp, .depth]
+            sub  w22, w22, 3
+            ldr  w0, [sp, .probCutCount]
+            cmp  w0, w22
+            bge  .9moveloop
+            add  w0, w0, 1
+            str  w0, [sp, .probCutCount]
             ldr  w1, [sp, .move]
             str  w1, [x21, State.currentMove]
            ubfx  w0, w1, 6, 6