From: Ralf Baechle <ralf@uni-koblenz.de>
To: Jamie Lokier <lk@tantalophile.demon.co.uk>
Cc: gcc@gcc.gnu.org, Linus Torvalds <torvalds@transmeta.com>,
Andrew Morton <akpm@zip.com.au>,
Alan Cox <alan@lxorguk.ukuu.org.uk>,
lkml <linux-kernel@vger.kernel.org>
Subject: Re: GCC still keeps empty loops? (was: [patch 4/21] fix ARCH_HAS_PREFETCH)
Date: Mon, 12 Aug 2002 09:45:48 +0200 [thread overview]
Message-ID: <20020812094548.A22879@bacchus.dhis.org> (raw)
In-Reply-To: <20020811210718.B3206@kushida.apsleyroad.org>; from lk@tantalophile.demon.co.uk on Sun, Aug 11, 2002 at 09:07:18PM +0100
On Sun, Aug 11, 2002 at 09:07:18PM +0100, Jamie Lokier wrote:
> Unbelievably, 3.1 doesn't remove empty loops either.
> I think there's a case for a compiler flag, `-fremove-empty-loops'.
Indeed ... It's sad having to scatter ifdefs over the code just because
gcc lacks this optimization ...
Ralf
next prev parent reply other threads:[~2002-08-12 22:11 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-11 7:38 [patch 4/21] fix ARCH_HAS_PREFETCH Andrew Morton
2002-08-11 19:49 ` Alan Cox
2002-08-11 18:47 ` Andrew Morton
2002-08-11 18:46 ` Larry McVoy
2002-08-11 19:06 ` Linus Torvalds
2002-08-11 20:07 ` GCC still keeps empty loops? (was: [patch 4/21] fix ARCH_HAS_PREFETCH) Jamie Lokier
2002-08-12 7:45 ` Ralf Baechle [this message]
2002-08-13 21:42 ` [patch 4/21] fix ARCH_HAS_PREFETCH Adrian Bunk
2002-08-13 22:12 ` H. Peter Anvin
2002-08-13 22:22 ` Adrian Bunk
2002-08-13 22:42 ` H. Peter Anvin
2002-08-14 17:40 ` Rogier Wolff
2002-08-14 19:41 ` H. Peter Anvin
2002-08-14 19:57 ` Jamie Lokier
2002-08-14 22:03 ` Daniel Jacobowitz
2002-08-14 20:45 ` Willy Tarreau
2002-08-14 20:58 ` H. Peter Anvin
2002-08-14 21:11 ` Willy Tarreau
2002-08-14 21:13 ` H. Peter Anvin
2002-08-15 1:23 ` Alan Cox
2002-08-15 1:28 ` H. Peter Anvin
2002-08-15 1:37 ` Alan Cox
2002-08-14 22:53 ` David Lang
2002-08-14 23:31 ` Jamie Lokier
2002-08-15 6:44 ` Willy Tarreau
2002-08-15 6:55 ` H. Peter Anvin
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