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From: "jamborm at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/42586] load-modify-store on x86 should be a single instruction
Date: Mon, 25 Jan 2010 17:51:00 -0000 [thread overview]
Message-ID: <20100125175124.9274.qmail@sourceware.org> (raw)
In-Reply-To: <bug-42586-7834@http.gcc.gnu.org/bugzilla/>
------- Comment #20 from jamborm at gcc dot gnu dot org 2010-01-25 17:51 -------
(In reply to comment #6)
> I think if we get the old SRA behavior back for this code, we will get this
> optimization in 4.5 since we remove the sptr->base and the other unnecessary
> store during PRE.
>
We now should have the "old SRA behavior" back (this was PR 42585). I
have checked only very briefly but I believe that this testcase is now
compiled as requested in the bug summary. I'd be grateful if someone
could double-check this and close this bug if it is indeed so.
Thanks.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42586
prev parent reply other threads:[~2010-01-25 17:51 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-03 6:04 [Bug rtl-optimization/42586] New: load-modify-store on x86 should be " andi-gcc at firstfloor dot org
2010-01-03 6:27 ` [Bug rtl-optimization/42586] " pinskia at gcc dot gnu dot org
2010-01-03 6:28 ` pinskia at gcc dot gnu dot org
2010-01-03 6:30 ` [Bug tree-optimization/42586] SRA does not always work pinskia at gcc dot gnu dot org
2010-01-03 6:33 ` pinskia at gcc dot gnu dot org
2010-01-03 6:35 ` pinskia at gcc dot gnu dot org
2010-01-03 6:39 ` pinskia at gcc dot gnu dot org
2010-01-03 6:55 ` [Bug tree-optimization/42586] New: load-modify-store on x86 should be \ single instruction andi-gcc at firstfloor dot org
2010-01-03 6:57 ` pinskia at gcc dot gnu dot org
2010-01-03 7:00 ` andi-gcc at firstfloor dot org
2010-01-03 7:02 ` pinskia at gcc dot gnu dot org
2010-01-03 7:03 ` andi-gcc at firstfloor dot org
2010-01-03 7:07 ` pinskia at gcc dot gnu dot org
2010-01-03 7:10 ` pinskia at gcc dot gnu dot org
2010-01-03 7:10 ` pinskia at gcc dot gnu dot org
2010-01-03 7:47 ` andi-gcc at firstfloor dot org
2010-01-03 7:49 ` pinskia at gcc dot gnu dot org
2010-01-03 8:13 ` andi-gcc at firstfloor dot org
2010-01-03 11:11 ` [Bug tree-optimization/42586] load-modify-store on x86 should be a " rguenth at gcc dot gnu dot org
2010-01-03 13:19 ` andi-gcc at firstfloor dot org
2010-01-25 17:51 ` jamborm at gcc dot gnu dot org [this message]
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