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From: Thorsten Glaser <tg@66h.42h.de>
To: gcc@gcc.gnu.org
Subject: Re: volatile semantics
Date: Tue, 03 May 2005 21:19:00 -0000	[thread overview]
Message-ID: <Pine.BSO.4.61L.0505032116360.7776@odem.66h.42h.de> (raw)
In-Reply-To: <851D2CB0-93DF-4C49-A6A8-8895DB1A08F9@apple.com>

Mike Stump dixit:

> int avail;
> int main() {
>  while (*(volatile int *)&avail == 0)
>    continue;
>  return 0;
> }

3.4.4 fetches too. I get:

.L2:
        mov     %eax, DWORD PTR avail
        test    %eax, %eax
        je      .L2

This is at -O99, other levels produce similar results.

//mirabile
-- 
> Hi, does anyone sell openbsd stickers by themselves and not packaged
> with other products?
No, the only way I've seen them sold is for $40 with a free OpenBSD CD.
	-- Haroon Khalid and Steve Shockley in gmane.os.openbsd.misc

  parent reply	other threads:[~2005-05-03 21:19 UTC|newest]

Thread overview: 118+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-05-03  8:41 Mike Stump
2005-05-03  8:52 ` Paolo Bonzini
2005-05-03  9:53 ` Giovanni Bajo
2005-05-03 14:31 ` Dave Korn
2005-05-03 14:41 ` Nathan Sidwell
2005-05-03 17:04   ` Dale Johannesen
2005-05-03 18:03     ` Nathan Sidwell
2005-05-03 18:32       ` Paul Koning
2005-05-03 18:37         ` Dale Johannesen
2005-05-11 23:01         ` Geoffrey Keating
2005-05-12 14:46           ` Paul Koning
2005-05-03 18:35       ` Dale Johannesen
2005-05-03 18:54         ` Nathan Sidwell
2005-05-03 19:25           ` Dale Johannesen
2005-05-04  8:18             ` Nathan Sidwell
2005-05-04 10:23               ` Andrew Haley
2005-05-04 11:30                 ` Gabriel Dos Reis
2005-05-04 17:59                   ` Dale Johannesen
2005-05-04 18:01                     ` Paul Koning
2005-05-04 19:49                     ` Nathan Sidwell
2005-07-16 16:51     ` D. Hugh Redelmeier
2005-07-16 16:56       ` Daniel Berlin
2005-07-16 17:26         ` Nathan Sidwell
2005-07-16 17:32           ` Daniel Berlin
2005-07-16 18:35             ` Nathan Sidwell
2005-07-16 20:35               ` Daniel Berlin
2005-07-16 21:29                 ` Gabriel Dos Reis
2005-07-16 21:41                   ` Daniel Berlin
2005-07-16 21:59                     ` Gabriel Dos Reis
2005-07-16 21:07             ` Gabriel Dos Reis
2005-07-16 19:20         ` D. Hugh Redelmeier
2005-07-16 21:10           ` Gabriel Dos Reis
2005-07-16 20:52         ` Gabriel Dos Reis
2005-07-16 21:07           ` Daniel Berlin
2005-07-16 21:24             ` Gabriel Dos Reis
2005-07-16 21:30               ` Daniel Berlin
2005-07-16 22:19                 ` Gabriel Dos Reis
2005-07-16 21:36               ` Daniel Berlin
2005-07-16 22:06                 ` Gabriel Dos Reis
2005-07-16 22:17                   ` Daniel Berlin
2005-07-16 22:25                     ` Gabriel Dos Reis
2005-07-19  7:27                       ` Kai Henningsen
2005-07-19  9:25                         ` Gabriel Dos Reis
2005-07-16 22:34               ` D. Hugh Redelmeier
2005-07-16 22:57                 ` Gabriel Dos Reis
2005-07-17  1:37                   ` D. Hugh Redelmeier
2005-07-17  2:24                     ` Gabriel Dos Reis
2005-07-17  2:36                       ` Daniel Berlin
2005-07-17  3:08                         ` Gabriel Dos Reis
2005-07-17  4:32                           ` Michael Veksler
2005-07-17  5:19                           ` Michael Veksler
2005-07-17  5:31                             ` Gabriel Dos Reis
2005-07-17  7:33                               ` Michael Veksler
2005-07-17 14:33                             ` Daniel Berlin
2005-07-17 15:30                               ` Michael Veksler
2005-07-17  7:53                           ` Andrew Pinski
2005-07-17 11:41                             ` Gabriel Dos Reis
2005-07-17  7:40                       ` D. Hugh Redelmeier
2005-07-17 11:50                         ` Gabriel Dos Reis
2005-07-18 19:30                           ` Mike Stump
2005-07-18 20:05                             ` Gabriel Dos Reis
2005-07-17 15:45                         ` Richard Henderson
2005-07-17 16:04                           ` Nathan Sidwell
2005-07-17 16:18                             ` Richard Henderson
2005-07-17 16:54                               ` Gabriel Dos Reis
2005-07-17 16:06                           ` Falk Hueffner
2005-07-17 16:18                           ` Ian Lance Taylor
2005-07-17 16:44                             ` Richard Henderson
2005-07-17 12:49                       ` Joseph S. Myers
2005-07-17  2:27                     ` Daniel Berlin
2005-07-17  3:14                       ` Gabriel Dos Reis
2005-07-17  3:27                         ` Daniel Berlin
2005-07-17 20:34                           ` Mark Mitchell
2005-07-17  4:38                         ` D. Hugh Redelmeier
2005-07-17  5:27                           ` Gabriel Dos Reis
2005-07-18 13:13                           ` Gerald Pfeifer
2005-07-17  7:54                       ` D. Hugh Redelmeier
2005-07-17 10:11               ` Andrew Haley
2005-07-17 12:03                 ` Gabriel Dos Reis
2005-07-16 17:33       ` Andrew Haley
2005-07-16 17:53         ` Daniel Berlin
2005-07-17  8:25           ` Ian Lance Taylor
2005-07-22 23:20             ` Geoffrey Keating
2005-07-22 23:33               ` Ian Lance Taylor
2005-07-23  1:28                 ` Geoff Keating
2005-07-23  2:59                   ` Gabriel Dos Reis
2005-07-23  9:50                     ` Geoff Keating
2005-07-23  6:03                   ` Ian Lance Taylor
2005-07-23 16:03                   ` Mike Stump
2005-07-16 19:05         ` Dale Johannesen
2005-07-16 21:17           ` Gabriel Dos Reis
2005-07-22 23:20       ` Geoffrey Keating
2005-07-25 23:08         ` Olivier Galibert
2005-05-06  0:45   ` Kai Henningsen
2005-05-06  1:42     ` Paul Koning
2005-05-06  2:04     ` Gabriel Dos Reis
2005-05-06  2:57     ` Dale Johannesen
2005-05-03 21:19 ` Thorsten Glaser [this message]
2005-05-06  5:06 Paul Schlie
2005-07-17 17:58 Paul Schlie
2005-07-18  1:29 Paul Schlie
2005-07-18  6:36 ` Gabriel Dos Reis
2005-07-18 11:20   ` Paul Schlie
2005-07-18 12:12     ` Paolo Bonzini
2005-07-18 12:17     ` Paul Schlie
2005-07-18 12:27       ` Gabriel Dos Reis
2005-07-18 13:27         ` Paul Schlie
2005-07-18 15:47           ` D. Hugh Redelmeier
2005-07-18 12:24     ` Gabriel Dos Reis
2005-07-18 12:11 ` Jonathan Wakely
2005-07-18 12:31   ` Paul Schlie
2005-07-19 17:56 Paul Schlie
2005-07-19 18:13 ` Gabriel Dos Reis
2005-07-19 18:32   ` Paul Schlie
2005-07-23  2:15 Paul Schlie
2005-07-23  9:50 ` Geoff Keating
2005-07-23 11:39   ` Paul Schlie
2005-07-23 11:44   ` Paul Schlie

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