From: Linus Torvalds <torvalds@transmeta.com>
To: Paul Koning <pkoning@xedia.com>
Cc: kenner@vlsi1.ultra.nyu.edu, gcc2@cygnus.com, egcs@cygnus.com
Subject: Re: New problems with gcc-2.8.0 based code - NOW FIXED!
Date: Tue, 30 Dec 1997 12:27:00 -0000 [thread overview]
Message-ID: <Pine.LNX.3.95.971230122358.440A-100000@penguin.transmeta.com> (raw)
In-Reply-To: <9712302006.AA15131@kona.>
Paul Koning writes:
>
> On the other hand, an asm that has no explicit output clearly must
> have side effects, otherwise it wouldn't have been put there. So for
> such an asm, "volatile" is the right treatment.
I agree 100%.
Any asm without any outputs by very definition has to have some side
effect to be useful, and as such the compiler should consider it volatile
by default. That makes gcc not only conform with the documentation, it is
also the only interpretation that makes any sense at all.
The lack of a "novolatile" keyword is a non-issue, as anybody who would
ever want to use it seems rather misguided.
Linus
next prev parent reply other threads:[~1997-12-30 12:27 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <9712301949.AA01218@vlsi1.ultra.nyu.edu>
1997-12-30 13:52 ` Paul Koning
1997-12-30 12:27 ` Linus Torvalds [this message]
[not found] <E0xnN2N-0005UN-00@paddington.london.uk.eu.org>
[not found] ` <199801030231.DAA25241@mail.macqel.be>
1998-01-05 10:13 ` Paul Koning
[not found] <9712302324.AA01798@vlsi1.ultra.nyu.edu>
1997-12-30 16:39 ` Paul Koning
[not found] <9712302109.AA01369@vlsi1.ultra.nyu.edu>
1997-12-30 14:41 ` Paul Koning
1997-12-30 23:05 ` Richard Stallman
[not found] <199712302041.MAA25118@atrus.synopsys.com>
1997-12-30 13:45 ` Toon Moene
1997-12-10 23:09 cannot bootstrap neither gcc-2.8.0-971206 nor egcs-971207 on sparc-sun-sunos4.1.3 Manfred.Hollstein
1997-12-22 12:06 ` Jeffrey A Law
1997-12-26 8:11 ` New problems with gcc-2.8.0 based code [was: Re: cannot bootstrap neither gcc-2.8.0-971206 nor egcs-971207 on sparc-sun-sunos4.1.3 ] Manfred Hollstein
1997-12-27 12:13 ` New problems with gcc-2.8.0 based code - NOW FIXED! Manfred Hollstein
1997-12-28 23:23 ` Richard Stallman
1997-12-29 7:48 ` Jeffrey A Law
1997-12-29 11:17 ` Manfred Hollstein
1997-12-29 10:20 ` Jeffrey A Law
1997-12-30 8:57 ` Manfred Hollstein
1997-12-30 9:47 ` Andi Kleen
1998-01-01 10:02 ` Manfred Hollstein
1997-12-30 11:33 ` Philip Blundell
1997-12-30 13:17 ` Paul Koning
1997-12-29 11:08 ` Manfred Hollstein
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