Danny Backx a écrit : > On Wed, 2007-09-19 at 11:51 +0200, pgeorges wrote: > >>>> I ported some chess engines to Pocket PC with cegecc and noticed the >>>> number of calculated positions per second is about 30% lower with my >>>> ports than the equivalent made by other people who used Microsoft >>>> compilers. >>>> > > >> Playing with -mcpu/-mtune/-march did not really help me but working on >> code showed to me that what cegcc generates seems in fact as performant >> as Microsoft compilers. >> > > Crosswords, compiled with cegcc, runs noticably slower than compiled > with the m$ compiler. Eric House also reported this. I've not > investigated this yet. We may have inefficiencies other than the code > generated by the compiler. Something with the coredll perhaps ? > > Danny > Is it possible to know in which cases the slowdowns are encountered ? CPU intensive code, I/O , system calls ? What is the amount of slow down ? 10 % , 50 % ?
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