Date: Fri, 05 Apr 1996 23:44:41 -0800 From: "Jordan K. Hubbard" <jkh@time.cdrom.com> To: current@freebsd.org Subject: pgcc and kernels.. Message-ID: <443.828776681@time.cdrom.com>
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After reading that provocative article about how awesome pgcc's
pentium optimization is, I naturally had to try it with today's
-current.
I notice that the kernel compile perks along fairly nicely with
`-O -pipe -mpentium' until one tries to compile kern_clock.c,
at which point the following define in machine/clock.h is flagged
as in error:
#define I586_CYCLECTR(x) \
__asm __volatile(".byte 0x0f, 0x31" : "=A" (x))
I've never been all that comfortable with gcc's asm() syntax, seeing
as I use it pretty much never, so I'm not sure who's "right" here - us
or gcc?
Jordan
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