At Sat, 25 Dec 2004 21:59:41 -0600, Marcelo E. Magallon <[EMAIL PROTECTED]> wrote: > Since the optimized i386 library does use MMX (it does perform runtime > checking) and is compiled with -mcpu=i686 [0] (gcc doesn't seem to be > emitting CMOVs though) I think the proper place is > /usr/lib/i686/mmx/cmov (I have no intention of babysitting the > generation of cmovs with each difference compiler release, therefore > mmx/cmov instead of just mmx)
If it uses i686 and mmx code, /usr/lib/i686/mmx/cmov is OK. Note that MMX will be removed from the next glibc 2.3.4 upload. It will provide only SSE2 (and CMOV, debian-specific for only VIA C3 processor). If you want to keep adding mmx, we may need discussion about this issue in future. But nowadays many processors can use SSE2, so I guess changing cmov to SSE2 can fix the problem. > My understanding is that this is also significant on sparc (-mcpu=v9) > and that this belongs in /usr/lib/v9. Is this right? Sparc defines HWCAP_SPARC_V9 and HWCAP_SPARC_ULTRA3. So v9 is right. See glibc sparc packages. > 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. > It also uses -mcpu=603 on powerpc. From my understanding this is a lot > hairier than other architectures since there's a whole load more > subarchitectures which are potentially incompatible with each other. Powerpc does not define any hwcaps, too. Regards, -- gotom -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
