HCha/Stockfish
1
0
Fork 0
mirror of https://github.com/HChaZZY/Stockfish.git synced 2025-12-20 09:06:45 +08:00
Code Issues Packages Projects Releases Wiki Activity

Retire run-time detection of hardware POPCNT

Browse Source 
It was meant to build a single binary optimized
for any kind of CPU: with and without hardware POPCNT.

This is a nice idea but in practice was never used, or
people builds binary with popcnt enabled or not, mainly
according to their type of CPU. And it was also never
used in the official Jim's builds where, in case, would
be easier for a number of reasons, do build two different
versions: with and without SEE42 support.

So retire this feature and simplify the code.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2011-12-30 11:30:26 +01:00
parent 20a6f99cdb
commit 0a6532a39d
6 changed files with 56 additions and 74 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
src/misc.cpp
View File

@@ -68,20 +68,21 @@ static const string AppTag = "";
const string engine_name() {
const string months("Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec");
const string cpu64(CpuIs64Bit ? " 64bit" : "");
const string cpu64(Is64Bit ? " 64bit" : "");
const string popcnt(HasPopCnt ? " SSE4.2" : "");
if (!EngineVersion.empty())
return AppName + " " + EngineVersion + cpu64;
return AppName + " " + EngineVersion + cpu64 + popcnt;
stringstream s, date(__DATE__); // From compiler, format is "Sep 21 2008"
string month, day, year;
date >> month >> day >> year;
s << setfill('0') << AppName + " " + AppTag + " "
<< year.substr(2, 2) << setw(2)
<< (1 + months.find(month) / 4) << setw(2)
<< day << cpu64;
s << AppName + " " + AppTag + " "
<< setfill('0') << year.substr(2)
<< setw(2) << (1 + months.find(month) / 4)
<< setw(2) << day << cpu64 << popcnt;
return s.str();
}