Subject: Re: Software Floating Point for MPC821/823/860
To: None <firstname.lastname@example.org>
From: Chris G. Demetriou <email@example.com>
Date: 04/04/2000 10:34:46
Jason R Thorpe <firstname.lastname@example.org> writes:
> It also turned out that the softfloat-in-libc turned out to be a fair bit
> faster than kernel fp emulation for *statically linked* binaries, but MUCH
> much slower for *dynamically linked* binaries. Obviously, the performance
> of kernel fp emulation is the same for statically linked or dynamically
> linked binaries.
Has anyone characterized why this is?
It's ... very counterintuitive, at least to me, that a couple of
branches would be slower than a kernel trep...
Chris Demetriou - email@example.com - http://www.netbsd.org/People/Pages/cgd.html
Disclaimer: Not speaking for NetBSD, just expressing my own opinion.