At Tue, 11 Jan 2005 11:27:28 +0100, Falk Hueffner wrote: > > Marcelo E. Magallon <[EMAIL PROTECTED]> wrote: > >> Mesa upstream uses -mcpu=ev5 -mieee on alpha. Is that ok? Where does > >> this belong into? /usr/lib/ev5? > > > > IIRC, alpha does not define any hwcaps. > > There's a patch for this, which works fine, but wasn't committed yet: > http://lists.debian.org/debian-glibc/2004/03/msg00143.html > > Sensible options are ev56 and ev67; ev5 is not particularly useful, since > it has the same instruction set as the baseline ev4, only different > scheduling. > -mieee is default anyway on Debian's gcc.
Yes, we don't support it currently, but I think it should be available after sarge. BTW, this patch does not enable HWCAP_IMPORTANT - so the answer of first question from Marcelo is: alpha does not support library HWCAP directory loading even if this patch is applied. If other libraries like mesa and libssl want to use /usr/lib/ev67 and so on, we may consider to add HWCAP_IMPORTANT. However, be careful that if we add one entry into HWCAP_IMPORTANT, the library lookup cost increases twice. If you're unsure about this issue, please check various applications with strace command. One example is loading /usr/lib/gconv .so files to search iconv plugin. Looking up about .so is a lot on i386. This is the reason why I hate to add CMOV into i386 HWCAP_IMPORTANT list because CMOV processor is only affected to VIA C3 corrupted processor, but the most i686 based system pay worthless look up cost for searching cmov directory. Regards, -- gotom -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
