HCha/Stockfish
1
0
Fork 0
mirror of https://github.com/HChaZZY/Stockfish.git synced 2025-12-19 08:36:33 +08:00
Code Issues Packages Projects Releases Wiki Activity

Prefetch pawn hash key

Browse Source 
Plus a bunch of other minor optimizations.

With this power pack we have an increase
of a whopping 1.4%  :-)

...and it took 3 good hours of profiling + hacking to get it out !

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2010-08-21 19:57:52 +02:00
parent b6ba5f7fe4
commit 7b721b3663
7 changed files with 75 additions and 85 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
src/material.cpp
View File

@@ -23,6 +23,7 @@
////
#include <cassert>
#include <cstring>
#include <sstream>
#include <map>
@@ -134,15 +135,14 @@ template<> const SFMap& EndgameFunctions::get<SF>() const { return maps.second;
/// MaterialInfoTable c'tor and d'tor, called once by each thread
MaterialInfoTable::MaterialInfoTable(unsigned int numOfEntries) {
MaterialInfoTable::MaterialInfoTable() {
size = numOfEntries;
entries = new MaterialInfo[size];
entries = new MaterialInfo[MaterialTableSize];
funcs = new EndgameFunctions();
if (!entries || !funcs)
{
cerr << "Failed to allocate " << numOfEntries * sizeof(MaterialInfo)
cerr << "Failed to allocate " << MaterialTableSize * sizeof(MaterialInfo)
<< " bytes for material hash table." << endl;
Application::exit_with_failure();
}
@@ -181,7 +181,7 @@ Phase MaterialInfoTable::game_phase(const Position& pos) {
MaterialInfo* MaterialInfoTable::get_material_info(const Position& pos) {
Key key = pos.get_material_key();
unsigned index = unsigned(key & (size - 1));
unsigned index = unsigned(key & (MaterialTableSize - 1));
MaterialInfo* mi = entries + index;
// If mi->key matches the position's material hash key, it means that we
@@ -191,7 +191,8 @@ MaterialInfo* MaterialInfoTable::get_material_info(const Position& pos) {
return mi;
// Clear the MaterialInfo object, and set its key
mi->clear();
memset(mi, 0, sizeof(MaterialInfo));
mi->factor[WHITE] = mi->factor[BLACK] = uint8_t(SCALE_FACTOR_NORMAL);
mi->key = key;
// Store game phase