defaults for -march and -mtune
Marcin Mirosław
marcin@mejor.pl
Fri Nov 25 08:59:00 GMT 2011
W dniu 24.11.2011 13:50, Jay Foad pisze:
> Marcin MirosÃ
aw wrote:
>> Try: gcc -Q --help=target 2>&1|grep "march\|mtune"
>
> Thanks! It's a shame it doesn't work on GCC 4.1.2 as well...
If you want to know what is default target for older gcc you can do such
trick:
$ touch a.c
$ gcc -fverbose-asm -S a.c -o - |grep "march\|mtune"
(founded on gcc mailinglist)
Regards
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