From: "S.Çağlar Onur" <caglar@pardus.org.tr>
To: Avi Kivity <avi@qumranet.com>
Cc: lkml <linux-kernel@vger.kernel.org>, kvm-devel@lists.sourceforge.net
Subject: Re: [PATCH] KVM: 'asm' operand has impossible constraints
Date: Sat, 27 Jan 2007 23:28:27 +0200 [thread overview]
Message-ID: <200701272328.31532.caglar@pardus.org.tr> (raw)
In-Reply-To: <45BB15F1.6020600@qumranet.com>
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27 Oca 2007 Cts tarihinde, Avi Kivity şunları yazmıştı:
> The patch looks correct, but I don't understand the gcc error message.
> Are we sure this isn't a gcc 4.2 bug?
>
> "g" appears to be equivalent to "rmi", if "i" is impossible, gcc is free
> to use "r" or "m", no?
Accorgind to GCC devs. its not a bug
(http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29808), on comment #5 the
problem described like;
"g" means "r"+"i" so the register allocator in the -O0 case is selecting "r"
while in the optimize case is selecting "i"
--
S.Çağlar Onur <caglar@pardus.org.tr>
http://cekirdek.pardus.org.tr/~caglar/
Linux is like living in a teepee. No Windows, no Gates and an Apache in house!
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next prev parent reply other threads:[~2007-01-27 21:30 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-25 23:40 [PATCH] KVM: 'asm' operand has impossible constraints S.Çağlar Onur
2007-01-27 9:05 ` Avi Kivity
2007-01-27 9:05 ` Avi Kivity
2007-01-27 16:36 ` Paweł Sikora
2007-01-28 9:41 ` Avi Kivity
2007-01-28 9:41 ` Avi Kivity
2007-01-27 21:28 ` S.Çağlar Onur [this message]
2007-01-27 21:46 ` D. Hazelton
2007-01-28 7:55 ` H. Peter Anvin
2007-01-28 9:45 ` Avi Kivity
2007-01-28 9:45 ` Avi Kivity
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