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[Bug optimization/14272] [tree-ssa] miscompilation of __exchange_and_add (atomicity.h)
- From: "dnovillo at redhat dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 25 Feb 2004 19:53:00 -0000
- Subject: [Bug optimization/14272] [tree-ssa] miscompilation of __exchange_and_add (atomicity.h)
- References: <20040224133459.14272.ehrhardt@mathematik.uni-ulm.de>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Additional Comments From dnovillo at redhat dot com 2004-02-25 19:52 -------
Subject: Re: [tree-ssa] miscompilation of
__exchange_and_add (atomicity.h)
On Wed, 2004-02-25 at 13:20, amacleod at redhat dot com wrote:
> ------- Additional Comments From amacleod at redhat dot com 2004-02-25 18:20 -------
> Err, did you try that patch on a testsuite run?
>
Nope. I only checked that it fixed this specific problem. I didn't
mean to apply the patch until you checked it out.
> It seems to me that you still need to look through the operands and kill any
> active partition experssions which are dependent on the uses and defs. Ie, you
> wouldn't make anything replaceable, but you do need to remove things from the
> current search list.
>
Yes, I had the feeling that it was a bit heavy handed.
Diego.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14272