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Re: inline asm constraints for conditions
- From: Andi Kleen <ak at suse dot de>
- To: Gabriel Paubert <paubert at iram dot es>
- Cc: Richard Henderson <rth at redhat dot com>,David Howells <dhowells at redhat dot com>, gcc at gcc dot gnu dot org
- Date: 29 Sep 2003 14:21:54 +0200
- Subject: Re: inline asm constraints for conditions
- References: <8873.1064599632@redhat.com.suse.lists.egcs><20030926203935.GB21887@redhat.com.suse.lists.egcs><20030929104750.GA6467@iram.es.suse.lists.egcs>
Gabriel Paubert <paubert@iram.es> writes:
> This would leave pushf/popf as the only way of moving flags
> and it has some potentially dangerous side effects, especially
> for kernel code (modifying interrupt mask to start with).
Also pushf/popf is incredibly slow on the P4.
-Andi