Author: Dann Corbit
Date: 02:26:19 04/14/04
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On April 14, 2004 at 04:54:35, Christophe Drieu wrote: >Hi, i recently tested 3 C compiler with my chess engine (Trex). I tested Visual >C++.net 2002 , Intel C++ 8.0 and gcc 3.3.1 (mingw). gcc with -O3 option give me >the fastest code. I tried profiling with Intel C++ but with no good result. >Visual C has good option to optimize code but gcc it's always the best. So, is >gcc the best compiler or am i a bad compiler user ? Visual C and Intel are not >cheap software ! > >If my memory is good, Christophe Theron work with gcc but use Visual C++ for >commercial version of Tiger. Why ? For me, Mingw GCC or Cygwin GCC are usually 1/3 slower or worse than that. For the intel compiler, you will get the best results with PGO. For the MS VC++ compiler, try these settings: /Ox /Og /Ob2 /Oi /Ot /Oy /GT /GL /G6 /GA /GF /Zp16 /Gy /Gr
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