Full access to the folder with chess engines - about 3000 files!

If you do not want to wait a long time for download - donate a minimum of 10$, enter your email - you will gain full access to the folder with chess engines. Bonus on donate of 15$ - acces to the folder with games, tables, engines pack. My email: jotes@go2.pl


Or transfer bank:
IBAN: PL 58 2490 0005 0000 4000 2134 5302 SWIFT code of the bank: ALBPPLPW Name of bank: Alior Bank
Bank address: Lupuszanska 38D, 02-232 Warsaw Bank Country: Poland Postscript: donation - chess engines (and email)
List of donors

Sunday, December 11, 2016

Stockfish 16120309 - new version


Stockfish, UCI chess engine

Leader of the ranking list JCER = 3368

🔬 Author: Andrey Neporada 
More:

Timestamp: 1480754227 

Help GCC to optimize msb() to single instruction 

GCC compiles builtin_clzll to “63 ^ BSR”. BSR is processor instruction "Bit Scan Reverse". 
So old msb() function is basically 63 - 63 ^ BSR. 
Unfortunately, GCC fails to simplify this expression. 

Old function compiles to 
bsrq %rdi, %rdi 
movl $63, %eax 
xorq $63, %rdi 
subl %edi, %eax 
ret 

New function compiles to 
bsrq %rdi, %rax 
ret 

BTW, Clang compiles both function to the same (optimal) code. 

No functional change.


Stockfish 16120309 - download



No comments:

Post a Comment