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This commit is contained in:
Marco Costalba 2016-04-24 11:52:24 +02:00
commit 7aeef7285f
6 changed files with 26 additions and 41 deletions
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29
src/Makefile
View file

@ -231,18 +231,19 @@ ifneq ($(comp),mingw)
endif
endif
### 3.4 Debugging
### 3.2 Debugging
ifeq ($(debug),no)
CXXFLAGS += -DNDEBUG
else
CXXFLAGS += -g
endif
### 3.5 Optimization
### 3.3 Optimization
ifeq ($(optimize),yes)
CXXFLAGS += -O3
ifeq ($(comp),gcc)
CXXFLAGS += -O3
ifeq ($(UNAME),Darwin)
ifeq ($(arch),i386)
@ -258,21 +259,13 @@ ifeq ($(optimize),yes)
endif
endif
ifeq ($(comp),mingw)
CXXFLAGS += -O3
endif
ifeq ($(comp),icc)
ifeq ($(UNAME),Darwin)
CXXFLAGS += -fast -mdynamic-no-pic
else
CXXFLAGS += -fast
CXXFLAGS += -mdynamic-no-pic
endif
endif
ifeq ($(comp),clang)
CXXFLAGS += -O3
ifeq ($(UNAME),Darwin)
ifeq ($(pext),no)
CXXFLAGS += -flto
@ -288,12 +281,12 @@ ifeq ($(optimize),yes)
endif
endif
### 3.6. Bits
### 3.4 Bits
ifeq ($(bits),64)
CXXFLAGS += -DIS_64BIT
endif
### 3.7 prefetch
### 3.5 prefetch
ifeq ($(prefetch),yes)
ifeq ($(sse),yes)
CXXFLAGS += -msse
@ -303,7 +296,7 @@ else
CXXFLAGS += -DNO_PREFETCH
endif
### 3.9 popcnt
### 3.6 popcnt
ifeq ($(popcnt),yes)
ifeq ($(comp),icc)
CXXFLAGS += -msse3 -DUSE_POPCNT
@ -312,7 +305,7 @@ ifeq ($(popcnt),yes)
endif
endif
### 3.10 pext
### 3.7 pext
ifeq ($(pext),yes)
CXXFLAGS += -DUSE_PEXT
ifeq ($(comp),$(filter $(comp),gcc clang mingw))
@ -320,7 +313,7 @@ ifeq ($(pext),yes)
endif
endif
### 3.11 Link Time Optimization, it works since gcc 4.5 but not on mingw under Windows.
### 3.8 Link Time Optimization, it works since gcc 4.5 but not on mingw under Windows.
### This is a mix of compile and link time options because the lto link phase
### needs access to the optimization flags.
ifeq ($(comp),gcc)
@ -343,7 +336,7 @@ ifeq ($(comp),mingw)
endif
endif
### 3.12 Android 5 can only run position independent executables. Note that this
### 3.9 Android 5 can only run position independent executables. Note that this
### breaks Android 4.0 and earlier.
ifeq ($(arch),armv7)
CXXFLAGS += -fPIE

22
src/evaluate.cpp
View file

@ -234,7 +234,7 @@ namespace {
{
ei.kingRing[Them] = b | shift_bb<Down>(b);
b &= ei.attackedBy[Us][PAWN];
ei.kingAttackersCount[Us] = b ? popcount(b) : 0;
ei.kingAttackersCount[Us] = popcount(b);
ei.kingAdjacentZoneAttacksCount[Us] = ei.kingAttackersWeight[Us] = 0;
}
else
@ -276,9 +276,7 @@ namespace {
{
ei.kingAttackersCount[Us]++;
ei.kingAttackersWeight[Us] += KingAttackWeights[Pt];
bb = b & ei.attackedBy[Them][KING];
if (bb)
ei.kingAdjacentZoneAttacksCount[Us] += popcount(bb);
ei.kingAdjacentZoneAttacksCount[Us] += popcount(b & ei.attackedBy[Them][KING]);
}
if (Pt == QUEEN)
@ -331,11 +329,7 @@ namespace {
{
// Bonus for aligning with enemy pawns on the same rank/file
if (relative_rank(Us, s) >= RANK_5)
{
Bitboard alignedPawns = pos.pieces(Them, PAWN) & PseudoAttacks[ROOK][s];
if (alignedPawns)
score += RookOnPawn * popcount(alignedPawns);
}
score += RookOnPawn * popcount(pos.pieces(Them, PAWN) & PseudoAttacks[ROOK][s]);
// Bonus when on an open or semi-open file
if (ei.pi->semiopen_file(Us, file_of(s)))
@ -417,8 +411,7 @@ namespace {
| ei.attackedBy[Them][BISHOP] | ei.attackedBy[Them][ROOK]
| ei.attackedBy[Them][KING];
if (b)
attackUnits += QueenContactCheck * popcount(b);
attackUnits += QueenContactCheck * popcount(b);
}
// Analyse the enemy's safe distance checks for sliders and knights
@ -514,9 +507,7 @@ namespace {
while (b)
score += Threat[Rook ][type_of(pos.piece_on(pop_lsb(&b)))];
b = weak & ~ei.attackedBy[Them][ALL_PIECES];
if (b)
score += Hanging * popcount(b);
score += Hanging * popcount(weak & ~ei.attackedBy[Them][ALL_PIECES]);
b = weak & ei.attackedBy[Us][KING];
if (b)
@ -535,8 +526,7 @@ namespace {
& pos.pieces(Them)
& ~ei.attackedBy[Us][PAWN];
if (b)
score += ThreatByPawnPush * popcount(b);
score += ThreatByPawnPush * popcount(b);
if (DoTrace)
Trace::add(THREAT, Us, score);

2
src/movegen.cpp
View file

@ -239,7 +239,7 @@ namespace {
&& !(PseudoAttacks[Pt][from] & target & ci->checkSquares[Pt]))
continue;
if (ci->dcCandidates && (ci->dcCandidates & from))
if (ci->dcCandidates & from)
continue;
}

6
src/position.cpp
View file

@ -523,8 +523,7 @@ bool Position::legal(Move m, Bitboard pinned) const {
// A non-king move is legal if and only if it is not pinned or it
// is moving along the ray towards or away from the king.
return !pinned
|| !(pinned & from)
return !(pinned & from)
|| aligned(from, to_sq(m), square<KING>(us));
}
@ -617,8 +616,7 @@ bool Position::gives_check(Move m, const CheckInfo& ci) const {
return true;
// Is there a discovered check?
if ( ci.dcCandidates
&& (ci.dcCandidates & from)
if ( (ci.dcCandidates & from)
&& !aligned(from, to, ci.ksq))
return true;

7
src/search.cpp
View file

@ -1007,13 +1007,18 @@ moves_loop: // When in check search starts from here
Value hValue = thisThread->history[pos.piece_on(to_sq(move))][to_sq(move)];
Value cmhValue = cmh[pos.piece_on(to_sq(move))][to_sq(move)];
const CounterMoveStats* fm = (ss - 2)->counterMoves;
const CounterMoveStats* fm2 = (ss - 4)->counterMoves;
Value fmValue = (fm ? (*fm)[pos.piece_on(to_sq(move))][to_sq(move)] : VALUE_ZERO);
Value fm2Value = (fm2 ? (*fm2)[pos.piece_on(to_sq(move))][to_sq(move)] : VALUE_ZERO);
// Increase reduction for cut nodes and moves with a bad history
if ( (!PvNode && cutNode)
|| (hValue < VALUE_ZERO && cmhValue <= VALUE_ZERO))
r += ONE_PLY;
// Decrease/increase reduction for moves with a good/bad history
int rHist = (hValue + cmhValue) / 14980;
int rHist = (hValue + cmhValue + fmValue + fm2Value) / 20000;
r = std::max(DEPTH_ZERO, r - rHist * ONE_PLY);
// Decrease reduction for moves that escape a capture. Filter out

1
src/syzygy/tbprobe.cpp
View file

@ -2159,7 +2159,6 @@ static int has_repeated(StateInfo *st)
bool Tablebases::root_probe(Position& pos, Search::RootMoves& rootMoves, Value& score)
{
int success;
int dtz = probe_dtz(pos, &success);
if (!success)