From: David Mosberger <davidm@napali.hpl.hp.com>
To: linux-ia64@vger.kernel.org
Subject: Re: [Linux-ia64] gettimeoffset for 2.5.67
Date: Tue, 13 May 2003 06:44:37 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590723705749@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105590723705684@msgid-missing>
>>>>> On 12 May 2003 22:05:02 -0400, Jes Sorensen <jes@wildopensource.com> said:
Jes> As for the instruction bundling, yes of course I checked that, how can
Jes> you ask ;-) The patch results in a total of three nops before the
Jes> branch, however no matter how I move it around, getting rid of those
Jes> doesn't seem to be possible (feel free to challenge me on that one).
This:
+ and r2=IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT,r2
;;
+ cmp.ne p8, p0=0, r2
+(p8) br.spnt.many fsys_fallback_syscall
can be shortened to:
tbit.nz p8, p0=IA64_SAL_PLATFORM_FEATURE_ITC_DRIFT_BIT, r2
(p8) br.spnt.many fsys_fallback_syscall
Might make it a bit easier to schedule things around (just add foo_BIT
numbers for all the SAL_PLATFORM_FEATURE bits and then define the
masks in terms of these bit numbers).
Sorry I didn't catch this previously.
--david
next prev parent reply other threads:[~2003-05-13 6:44 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-08 16:44 [Linux-ia64] gettimeoffset for 2.5.67 Jes Sorensen
2003-05-08 22:24 ` David Mosberger
2003-05-11 17:54 ` Jes Sorensen
2003-05-12 23:40 ` David Mosberger
2003-05-13 2:05 ` Jes Sorensen
2003-05-13 6:44 ` David Mosberger [this message]
2003-05-13 15:42 ` Jes Sorensen
2003-05-13 17:54 ` David Mosberger
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