Re: SUMMARY: pentium optimized debian discussion
On Jul 28, Joey Hess wrote:
> - This change will likely help other ports as well, though I haven't heard
> from them.
It might help somewhat with people who don't have FPUs (fairly common on
m68k and perhaps other architectures... 386/SX and others?), when the kernel
FPU emulator gets straightened out. A m68k-nofpu subarchitecture (with a
few things like glibc and FPU-intensive apps in it) would probably improve
performance on non-FPU machines dramatically (avoiding the unimplemented FPU
instruction traps into kernel space).
Might also help turn up the gas on 68060s, which have quite a few
unimplemented instructions that require similar FPU traps (though it might
be better to just get gcc to avoid using those instructions by default,
perhaps having it default to -m68020-60 instead of -m68030 [assuming the
former flag exists and works like -m68020-40]).
64-bit PPCs (e.g. 750s) might also benefit from a subarch, though how isn't
quite obvious to me at midnight.
Chris
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