http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55334
--- Comment #28 from Martin Jambor jamborm at gcc dot gnu.org 2013-02-20
11:13:04 UTC ---
(In reply to comment #27)
Yes, preserving COMPONENT_REFs would help here, but it is not
correct (even for this testcase the types do not match).
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55334
--- Comment #29 from Martin Jambor jamborm at gcc dot gnu.org 2013-02-20
12:56:36 UTC ---
Author: jamborm
Date: Wed Feb 20 12:56:30 2013
New Revision: 196171
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=196171
Log:
2013-02-20
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55334
--- Comment #26 from Martin Jambor jamborm at gcc dot gnu.org 2013-02-19
12:54:27 UTC ---
(In reply to comment #25)
That won't work (read: it will cause miscompiles). I believe with the
most recent data-dependence reorg I added a
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55334
--- Comment #27 from rguenther at suse dot de rguenther at suse dot de
2013-02-19 13:49:30 UTC ---
On Tue, 19 Feb 2013, jamborm at gcc dot gnu.org wrote:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55334
--- Comment #26 from
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55334
--- Comment #25 from Richard Biener rguenth at gcc dot gnu.org 2013-02-13
09:09:09 UTC ---
(In reply to comment #24)
Created attachment 29429 [details]
Experimental patch resolving more dependencies
This is my (untested, highly
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55334
--- Comment #24 from Martin Jambor jamborm at gcc dot gnu.org 2013-02-12
20:10:42 UTC ---
Created attachment 29429
-- http://gcc.gnu.org/bugzilla/attachment.cgi?id=29429
Experimental patch resolving more dependencies
This is my
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55334
Richard Biener rguenth at gcc dot gnu.org changed:
What|Removed |Added
Status|ASSIGNED|NEW
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55334
--- Comment #17 from Jan Hubicka hubicka at ucw dot cz 2012-12-21 13:49:15
UTC ---
Nothing to fix for me - it's the IPA-CP decision that pessimizes things.
Well, replacing parameter by known constant should not pessimize in general...
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55334
--- Comment #18 from Richard Biener rguenth at gcc dot gnu.org 2012-12-21
14:01:33 UTC ---
(In reply to comment #17)
Nothing to fix for me - it's the IPA-CP decision that pessimizes things.
Well, replacing parameter by known constant
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55334
--- Comment #19 from Richard Biener rguenth at gcc dot gnu.org 2012-12-21
14:08:24 UTC ---
Btw, one thing to improve would be the excessive number of aliasing runtime
checks the vectorizer currently generates. That would also help himeno.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55334
--- Comment #20 from Jakub Jelinek jakub at gcc dot gnu.org 2012-12-21
14:10:19 UTC ---
There would be if we had ADD_RESTRICT or something similar. But we don't right
now, so supposedly it would be better to avoid such IPA-CP changes if it
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55334
--- Comment #21 from Richard Biener rguenth at gcc dot gnu.org 2012-12-21
14:12:18 UTC ---
(In reply to comment #20)
There would be if we had ADD_RESTRICT or something similar.
I think that would not help as we'd likely propagate
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55334
--- Comment #22 from Jan Hubicka hubicka at ucw dot cz 2012-12-21 14:22:28
UTC ---
There would be if we had ADD_RESTRICT or something similar. But we don't
right
now, so supposedly it would be better to avoid such IPA-CP changes if it
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55334
Richard Biener rguenth at gcc dot gnu.org changed:
What|Removed |Added
CC|
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55334
--- Comment #15 from Richard Biener rguenth at gcc dot gnu.org 2012-12-10
15:33:38 UTC ---
(In reply to comment #4)
Hmm, this does not help. The problem is indeed that we are not able to figure
out that the accesses into subarrays of X
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55334
Richard Biener rguenth at gcc dot gnu.org changed:
What|Removed |Added
Keywords|
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55334
Jakub Jelinek jakub at gcc dot gnu.org changed:
What|Removed |Added
Target Milestone|--- |4.8.0
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