From: Andreas Schwab <schwab@suse.de>
To: Uros Bizjak <ubizjak@gmail.com>
Cc: Ralph Loader <suckfish@ihug.co.nz>,
GCC Patches <gcc-patches@gcc.gnu.org>
Subject: Re: [PATCH] Fix for PR 37809 and 37807
Date: Wed, 22 Oct 2008 17:38:00 -0000 [thread overview]
Message-ID: <jetzb4fze4.fsf@sykes.suse.de> (raw)
In-Reply-To: <48FF3CA0.6030405@gmail.com> (Uros Bizjak's message of "Wed, 22 Oct 2008 16:45:52 +0200")
Uros Bizjak <ubizjak@gmail.com> writes:
>> +
>> +
>> +void Sshift()
>> +{
>> + volatile __m64 y = (__m64) 0xffffffffll;
>> + __m64 x = y & (__m64) 0xffffffffll;
>> + x = _m_psradi (x, 1);
>> + x &= (__m64) 0x80000000ll;
>> + if (0 == (long long) x)
>>
>
> Aliasing violation on x variable.
How is that an aliasing violation? There are no pointers involved.
Andreas.
--
Andreas Schwab, SuSE Labs, schwab@suse.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
PGP key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
next prev parent reply other threads:[~2008-10-22 15:01 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-22 17:13 Uros Bizjak
2008-10-22 17:38 ` Andreas Schwab [this message]
2008-10-22 18:26 ` Uros Bizjak
-- strict thread matches above, loose matches on Subject: below --
2008-10-22 8:36 Ralph Loader
2008-10-22 10:42 ` Richard Guenther
2008-11-05 7:57 ` Ralph Loader
2008-11-05 9:21 ` Richard Guenther
2008-11-13 21:52 ` Kaveh R. GHAZI
2008-11-13 22:43 ` Uros Bizjak
2008-11-13 22:54 ` Uros Bizjak
2008-11-19 20:32 ` Kaveh R. Ghazi
2008-10-22 13:49 ` Paolo Bonzini
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