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I have removed the check for

 pieceCount[PAWN] > FILE_NB

because totally useless.

No functional change.
This commit is contained in:
Marco Costalba
2017-04-22 09:03:17 +02:00
parent 6b9a22b40d
commit b48439e906
10 changed files with 58 additions and 60 deletions
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src/search.cpp
+14 -10
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@@ -75,7 +75,7 @@ namespace {
int FutilityMoveCounts[2][16]; // [improving][depth]
int Reductions[2][2][64][64]; // [pv][improving][depth][moveNumber]
// Threshold used for countermoves based pruning.
// Threshold used for countermoves based pruning
const int CounterMovePruneThreshold = 0;
template <bool PvNode> Depth reduction(bool i, Depth d, int mn) {
@@ -195,8 +195,10 @@ void Search::clear() {
th->counterMoves.clear();
th->history.clear();
th->counterMoveHistory.clear();
th->counterMoveHistory[NO_PIECE][0].fill(CounterMovePruneThreshold-1);
th->resetCalls = true;
CounterMoveStats& cm = th->counterMoveHistory[NO_PIECE][0];
int* t = &cm[NO_PIECE][0];
std::fill(t, t + sizeof(cm), CounterMovePruneThreshold - 1);
}
Threads.main()->previousScore = VALUE_INFINITE;
@@ -562,9 +564,10 @@ namespace {
if (thisThread->resetCalls.load(std::memory_order_relaxed))
{
thisThread->resetCalls = false;
// At low node count increase the checking rate to about 0.1% of nodes
// otherwise use a default value.
thisThread->callsCnt = Limits.nodes ? std::min((int64_t)4096, Limits.nodes / 1024)
thisThread->callsCnt = Limits.nodes ? std::min(4096, int(Limits.nodes / 1024))
: 4096;
}
@@ -889,7 +892,7 @@ moves_loop: // When in check search starts from here
if (value < rBeta)
extension = ONE_PLY;
}
else if ( givesCheck
else if ( givesCheck
&& !moveCountPruning
&& pos.see_ge(move, VALUE_ZERO))
extension = ONE_PLY;
@@ -904,10 +907,11 @@ moves_loop: // When in check search starts from here
{
if ( !captureOrPromotion
&& !givesCheck
&& (!pos.advanced_pawn_push(move) || pos.non_pawn_material() >= 5000))
&& (!pos.advanced_pawn_push(move) || pos.non_pawn_material() >= Value(5000)))
{
// Move count based pruning
if (moveCountPruning) {
if (moveCountPruning)
{
skipQuiets = true;
continue;
}
@@ -1126,11 +1130,11 @@ moves_loop: // When in check search starts from here
&& is_ok((ss-1)->currentMove))
update_cm_stats(ss-1, pos.piece_on(prevSq), prevSq, stat_bonus(depth));
if(!excludedMove)
if (!excludedMove)
tte->save(posKey, value_to_tt(bestValue, ss->ply),
bestValue >= beta ? BOUND_LOWER :
PvNode && bestMove ? BOUND_EXACT : BOUND_UPPER,
depth, bestMove, ss->staticEval, TT.generation());
bestValue >= beta ? BOUND_LOWER :
PvNode && bestMove ? BOUND_EXACT : BOUND_UPPER,
depth, bestMove, ss->staticEval, TT.generation());
assert(bestValue > -VALUE_INFINITE && bestValue < VALUE_INFINITE);