Hi Folkert, cobc is calling gcc. Just do cobc -v ... and you will see the exact calls. I think the difference is that you are using -O3 instead of -O2 and arch/tunes. You can pass options to gcc from cobc command line, as well as define your options using environment variables. Just do your own research :-) Regards, SK On 5/19/2016 6:09 PM, folkert wrote: > Hi, > > While experimenting with my brainfuck-to-cobol translator ( > http://tinyurl.com/bftocob ) I noticed that if I do not let cobc > directly output a binary (on linux) but go through the gnu-c compiler > instead, that I get a 16,8% speed improvement (tested with a mandelbrot > fractal). > Is this to be expected? > > compiled and linked by cobc (cobc -O2) > -------------------------------------- > real 11m19.063s > user 11m15.768s > sys 0m1.084s > > translated to c and then compiled with gnu-c > -------------------------------------------- > real 9m25.608s > user 9m24.040s > sys 0m0.492s > > What I did: > cobc -O2 -fimplicit-init -C mandelbrot.cbl > gcc -O3 -march=native -mtune=native -fomit-frame-pointer -lcob mandelbrot.c -o mb2 > > > Also: how does cobc create the binary, does it run gnu-c underneath? Or > does it compile to binary by itself? > > > Folkert van Heusden > ------------------------------------------------------------------------------ Mobile security can be enabling, not merely restricting. Employees who bring their own devices (BYOD) to work are irked by the imposition of MDM restrictions. Mobile Device Manager Plus allows you to control only the apps on BYO-devices by containerizing them, leaving personal data untouched! https://ad.doubleclick.net/ddm/clk/304595813;131938128;j _______________________________________________ open-cobol-list mailing list open-cobol-list@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/open-cobol-list
