Common Board @ Timus Online Judge

C/C++ Compiler switches changed (+)

Posted by Vladimir Yakovlev (USU) 21 Nov 2007 23:35

Switch /O1 was added to command line of C/C++ compiler. This switch is used instead of default /O2 switch. Description from compiler help:

/O1    optimize for maximum speed, but disable some optimizations which
          increase code size for a small speed benefit
/O2    optimize for maximum speed (DEFAULT)

ICL compiler sometimes makes wrong code with /O2 switch. To prevent wrong verdicts we have changed switches but loose some performance. Some programs will work a little bit slower now.

Current compiler's command line:

// C
icl /GX /TC /Za /O1 /D ONLINE_JUDGE

// C++
icl /GX /TP /Za /O1 /D ONLINE_JUDGE

(See http://acm.timus.ru/help.aspx?topic=cpp )

Edited by author 21.11.2007 23:39