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Revert "null move reorder" series

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Does not seem to improve on the standard, latest results
from Joona after 2040 games are negative:

Orig - Mod: 454 - 424 - 1162

And is more or less the same I got few days ago.

So revert for now.

Verified same functionality of 595a90dfd

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2009-08-29 20:19:09 +01:00
parent 9ab84a8165
commit e9de96f0e4
3 changed files with 54 additions and 72 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
src/movepick.cpp
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@@ -40,9 +40,7 @@
namespace {
CACHE_LINE_ALIGNMENT
const MovegenPhaseT MainSearchPhaseTable[] = { PH_NULL_MOVE, PH_TT_MOVES, PH_GOOD_CAPTURES, PH_KILLERS, PH_NONCAPTURES, PH_BAD_CAPTURES, PH_STOP};
const MovegenPhaseT MainSearchNoNullPhaseTable[] = { PH_TT_MOVES, PH_GOOD_CAPTURES, PH_KILLERS, PH_NONCAPTURES, PH_BAD_CAPTURES, PH_STOP};
const MovegenPhaseT LowSearchPhaseTable[] = { PH_TT_MOVES, PH_NULL_MOVE, PH_GOOD_CAPTURES, PH_KILLERS, PH_NONCAPTURES, PH_BAD_CAPTURES, PH_STOP};
const MovegenPhaseT MainSearchPhaseTable[] = { PH_TT_MOVES, PH_GOOD_CAPTURES, PH_KILLERS, PH_NONCAPTURES, PH_BAD_CAPTURES, PH_STOP};
const MovegenPhaseT EvasionsPhaseTable[] = { PH_EVASIONS, PH_STOP};
const MovegenPhaseT QsearchWithChecksPhaseTable[] = { PH_TT_MOVES, PH_QCAPTURES, PH_QCHECKS, PH_STOP};
const MovegenPhaseT QsearchWithoutChecksPhaseTable[] = { PH_TT_MOVES, PH_QCAPTURES, PH_STOP};
@@ -62,7 +60,7 @@ namespace {
/// move ordering is at the current node.
MovePicker::MovePicker(const Position& p, Move ttm, Depth d,
const History& h, SearchStack* ss, bool useNullMove) : pos(p), H(h) {
const History& h, SearchStack* ss) : pos(p), H(h) {
ttMoves[0].move = ttm;
if (ss)
{
@@ -82,10 +80,8 @@ MovePicker::MovePicker(const Position& p, Move ttm, Depth d,
if (p.is_check())
phasePtr = EvasionsPhaseTable;
else if (d >= Depth(3 * OnePly))
phasePtr = useNullMove ? MainSearchPhaseTable : MainSearchNoNullPhaseTable;
else if (d > Depth(0))
phasePtr = useNullMove ? LowSearchPhaseTable : MainSearchNoNullPhaseTable;
phasePtr = MainSearchPhaseTable;
else if (d == Depth(0))
phasePtr = QsearchWithChecksPhaseTable;
else
@@ -105,9 +101,6 @@ void MovePicker::go_next_phase() {
phase = *(++phasePtr);
switch (phase) {
case PH_NULL_MOVE:
return;
case PH_TT_MOVES:
curMove = ttMoves;
lastMove = curMove + 2;
@@ -258,10 +251,6 @@ Move MovePicker::get_next_move() {
{
switch (phase) {
case PH_NULL_MOVE:
go_next_phase();
return MOVE_NULL;
case PH_TT_MOVES:
while (curMove != lastMove)
{