Subject: Re: Speeding up libraries.
To: Johnny Billquist <firstname.lastname@example.org>
From: David Brownlee <email@example.com>
Date: 07/04/2002 16:35:27
On Thu, 4 Jul 2002, Johnny Billquist wrote:
[suggests additional version of libc for 8650 full instruction set]
- Extend gcc to provide additional -mcpu=XXXX options for
the vax cpu.
For completeness if you have data on scheduling
differences between the cpu families you could also
implement -mtune=XXXX. That would allow you to
recompile everything to take best advantage of the
I use pksgrc/devel/cpuflags on my alpha, sparc and i386
boxes to compile the base system and pkgsrc for the
- i386 has a libm387.so.0 which is used if the sysctl
machdep.fpu_present is true. It contains FPU using
versions of various maths functions. Something similar
could be done for the vax libm and/or libc, but this
only benefits dynamically linked binaries.
David/absolute -- www.netbsd.org: No hype required --