--- Comment #4 from dorit at gcc dot gnu dot org 2007-07-24 08:59 ---
Just for the record - as we discussed last week, there are two ways to solve
this problem - either have LIM leave behind it cleaner code (smthing like
copy-prop + dce to eliminate the extra copy stmts), or improve
--- Comment #13 from dorit at gcc dot gnu dot org 2007-07-24 09:05 ---
David, can you confirm that this PR can now be closed?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25413
--- Comment #3 from dorit at gcc dot gnu dot org 2007-07-24 13:05 ---
(In reply to comment #1)
... We actually had both options in the vectorizer for a while
(guarded by ADJUST_IN_EPILOG hard-coded #define), however we didn't know how
to
choose between the two options (cost wise
--- Comment #1 from dorit at gcc dot gnu dot org 2007-07-19 18:09 ---
I think this is similar to PR19347?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32824
--- Comment #1 from dorit at gcc dot gnu dot org 2007-07-19 18:15 ---
...
Though the last add is extra and does not need to be done, we can get rid of
it
by having vect_var_.36 being set initially to {e, 0, 0, 0} .
The problem is that often initializing a vector to {e, 0, 0, 0
--- Comment #3 from dorit at gcc dot gnu dot org 2007-07-19 18:28 ---
ah, I misunderstood you - when you wrote before that you manually LIM'd e I
assumed it was because LIM didn't work. I see that the problem is with the
garbage that LIM leaves behind:
pr32824.c:6: note: Analyze phi
--- Comment #11 from dorit at gcc dot gnu dot org 2007-07-16 08:02 ---
(In reply to comment #10)
any chance of a 4.2 backport?
sure (as soon as 4.2 gets out of freeze. unfortunately we missed the 4.2.1
release).
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25413
--- Comment #3 from dorit at gcc dot gnu dot org 2007-07-15 18:31 ---
With loop distribution we could vectorize these loops using peeling to handle
misaligned stores (multiple stores make peeling for alignment insufficient
here).
wonder what the loop-distribution pass
--- Comment #5 from dorit at gcc dot gnu dot org 2007-07-15 19:02 ---
(In reply to comment #4)
The arrays in this example all have compatible alignment. This is one of the
advantages many compilers see in the use of the old-fashioned block COMMON.
In the usual case lft==1 all arrays
--- Comment #9 from dorit at gcc dot gnu dot org 2007-07-12 14:42 ---
Subject: Bug 25413
Author: dorit
Date: Thu Jul 12 14:42:08 2007
New Revision: 126591
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=126591
Log:
2007-07-12 Dorit Nuzman [EMAIL PROTECTED]
Devang
--- Comment #1 from dorit at gcc dot gnu dot org 2007-07-11 06:43 ---
(In reply to comment #0)
r126521 on ppc64-linux
bootstrap fails with
r126512 passed bootstrap on powerpc64, so I guess the problem was introduced
somewhere in between
--
http://gcc.gnu.org/bugzilla
--- Comment #7 from dorit at gcc dot gnu dot org 2007-07-04 11:14 ---
The vectorizer reports:
pr25621.f90:7: note: reduction used in loop.
pr25621.f90:7: note: Unknown def-use cycle pattern.
because of the seemingly redundant assignment:
c__lsm.63_30 = D.1361_38;
which uses
--- Comment #13 from dorit at gcc dot gnu dot org 2007-07-01 08:32 ---
Fix committed, PR can be closed.
--
dorit at gcc dot gnu dot org changed:
What|Removed |Added
--- Comment #12 from dorit at gcc dot gnu dot org 2007-07-01 08:35 ---
A fix was committed, looks like the patch can be closed.
--
dorit at gcc dot gnu dot org changed:
What|Removed |Added
--- Comment #5 from dorit at gcc dot gnu dot org 2007-07-01 08:38 ---
This fix was committed with the wrong PR number (sorry about that):
2007-02-19 Dorit Nuzman [EMAIL PROTECTED]
PR tree-optimization/30975
* tree-vect-trasnform.c (vect_get_vec_def_for_stmt_copy
--- Comment #2 from dorit at gcc dot gnu dot org 2007-07-01 08:42 ---
(oops - wrong keyword)
--
dorit at gcc dot gnu dot org changed:
What|Removed |Added
--- Comment #3 from dorit at gcc dot gnu dot org 2007-07-01 08:47 ---
I was able to reproduce the behavior on a Pentinum4 with a recent 4.3 snapshot.
It doesn't look like it's the vectorizer's fault - nothing gets vectorized.
However, if I disable the tree-level if-conversion (which
--- Comment #7 from dorit at gcc dot gnu dot org 2007-07-01 08:51 ---
PR31966 is also wrong code which seems to be a result of the tree-level
if-conversion (nothing gets vectorized these, and if tree-if-conversion is
disabled everything works ok).
--
http://gcc.gnu.org/bugzilla
--- Comment #4 from dorit at gcc dot gnu dot org 2007-07-01 08:52 ---
This may be related to PR32533 (also wrong-code due to tree-if-conversion).
--
dorit at gcc dot gnu dot org changed:
What|Removed |Added
--- Comment #7 from dorit at gcc dot gnu dot org 2007-07-01 09:59 ---
I'm testing the following patch (seems to fix the two testcases in this PR on
Pentium4. still need to bootstrap etc, and check the powerpc bits)
Index: gcc/targhooks.c
--- Comment #4 from dorit at gcc dot gnu dot org 2007-07-01 10:05 ---
Closed based on Ira's comment.
--
dorit at gcc dot gnu dot org changed:
What|Removed |Added
--- Comment #14 from dorit at gcc dot gnu dot org 2007-07-01 10:12 ---
So now that Zdenek's patch went in, can someone confirm if this problem
doesn't
occur anymore on x86_64?
Compiles OK for original and reduced testcase (-O2 -ftree-vectorize) with:
Target: x86_64-unknown
--- Comment #4 from dorit at gcc dot gnu dot org 2007-07-01 10:16 ---
Can anyone still see this failure, or can this PR be closed?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27659
--- Comment #1 from dorit at gcc dot gnu dot org 2007-07-01 11:23 ---
(In reply to comment #0)
I'm getting the following segfault on IA-64 with current 4.2 and 4.3.
This goes back at least to 20060721 - I don't have anything older to
test here at the moment. I don't see
--- Comment #5 from dorit at gcc dot gnu dot org 2007-07-01 12:43 ---
Dependence analysis now fails with a different message:
(compute_affine_dependence
(stmt_a =
D.1373_43 = (*a_42(D))[D.1372_41])
(stmt_b =
(*a_42(D))[D.1370_44] = D.1375_47)
(subscript_dependence_tester
--- Comment #3 from dorit at gcc dot gnu dot org 2007-07-01 12:46 ---
Looks like a similar problem to PR32378:
(compute_affine_dependence
(stmt_a =
D.1398_74 = (*aa_73(D))[D.1397_72])
(stmt_b =
(*aa_73(D))[D.1393_68] = D.1408_88)
(subscript_dependence_tester
--- Comment #4 from dorit at gcc dot gnu dot org 2007-07-01 12:48 ---
Looks like the data-dependence analysis is doing it's job (it figures out that
the dependence distance is 1), but the vectorizer is still not willing to
vectorize. Need to look into this.
--
http://gcc.gnu.org
--- Comment #5 from dorit at gcc dot gnu dot org 2007-06-14 09:39 ---
Subject: Bug 32274
Author: dorit
Date: Thu Jun 14 09:39:31 2007
New Revision: 125703
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=125703
Log:
PR target/32274
* gcc.dg/vect/pr32224.c: Fix
--- Comment #5 from dorit at gcc dot gnu dot org 2007-06-08 08:58 ---
Subject: Bug 32224
Author: dorit
Date: Fri Jun 8 08:57:54 2007
New Revision: 125566
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=125566
Log:
PR tree-optimization/32224
* tree-vect-analyze.c
--- Comment #7 from dorit at gcc dot gnu dot org 2007-05-03 13:55 ---
Subject: Bug 31699
Author: dorit
Date: Thu May 3 12:54:45 2007
New Revision: 124375
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=124375
Log:
PR tree-optimization/31699
* tree-vect-analyze.c
--- Comment #7 from dorit at gcc dot gnu dot org 2007-05-01 07:59 ---
Subject: Bug 31589
Author: dorit
Date: Tue May 1 07:58:59 2007
New Revision: 124315
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=124315
Log:
PR testsuite/31589
* gcc.dg/vect/vect-iv-9.c
--- Comment #9 from dorit at gcc dot gnu dot org 2007-03-25 13:08 ---
Subject: Bug 30784
Author: dorit
Date: Sun Mar 25 12:08:29 2007
New Revision: 123197
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=123197
Log:
PR tree-optimization/30784
* fold-const.c
--- Comment #6 from dorit at gcc dot gnu dot org 2007-03-17 14:43 ---
Subject: Bug 31041
Author: dorit
Date: Sat Mar 17 14:43:30 2007
New Revision: 123023
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=123023
Log:
PR tree-optimization/31041
* tree-vect-transform.c
--- Comment #10 from dorit at gcc dot gnu dot org 2007-02-22 08:16 ---
Subject: Bug 30858
Author: dorit
Date: Thu Feb 22 08:16:18 2007
New Revision: 10
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=10
Log:
PR tree-optimization/30858
* tree-vectorizer.c
--- Comment #6 from dorit at gcc dot gnu dot org 2007-02-14 14:11 ---
Subject: Bug 30771
Author: dorit
Date: Wed Feb 14 14:10:57 2007
New Revision: 121950
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=121950
Log:
PR tree-optimization/30771
* tree-vect-analyze.c
--- Comment #12 from dorit at gcc dot gnu dot org 2007-02-12 13:15 ---
Subject: Bug 29145
Author: dorit
Date: Mon Feb 12 13:14:52 2007
New Revision: 121844
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=121844
Log:
PR tree-optimization/29145
* tree-data-ref.c
--- Comment #19 from dorit at gcc dot gnu dot org 2006-08-10 12:07 ---
Subject: Bug 26197
Author: dorit
Date: Thu Aug 10 12:07:22 2006
New Revision: 116060
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=116060
Log:
PR tree-optimization/26197
* tree-ssa-alias.c
--- Comment #21 from dorit at gcc dot gnu dot org 2006-08-03 20:35 ---
Subject: Bug 27770
Author: dorit
Date: Thu Aug 3 20:35:05 2006
New Revision: 115910
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=115910
Log:
PR tree-optimization/27770
* tree-vectorizer.h
--- Comment #4 from dorit at gcc dot gnu dot org 2006-02-28 07:41 ---
Subject: Bug 26419
Author: dorit
Date: Tue Feb 28 07:41:47 2006
New Revision: 111516
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=111516
Log:
PR tree-optimization/26419
* doc/invoke.texi
--- Comment #5 from dorit at gcc dot gnu dot org 2006-02-26 09:27 ---
Subject: Bug 26359
Author: dorit
Date: Sun Feb 26 09:27:35 2006
New Revision: 111451
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=111451
Log:
PR tree-optimization/26359
* tree-ssa-alias.c
--- Comment #24 from dorit at gcc dot gnu dot org 2006-02-26 12:55 ---
Subject: Bug 25125
Author: dorit
Date: Sun Feb 26 12:55:43 2006
New Revision: 111452
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=111452
Log:
PR tree-optimization/25125
* gcc.dg/vect/wrapv
--- Comment #7 from dorit at gcc dot gnu dot org 2006-01-29 16:50 ---
Subject: Bug 25911
Author: dorit
Date: Sun Jan 29 16:50:05 2006
New Revision: 110377
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=110377
Log:
PR tree-opt/25911
* tree-vect-patterns.c
--- Comment #11 from dorit at gcc dot gnu dot org 2005-12-18 08:46 ---
Subject: Bug 24378
Author: dorit
Date: Sun Dec 18 08:46:30 2005
New Revision: 108746
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=108746
Log:
PR tree-optimization/24378
* tree-vect
--- Comment #12 from dorit at gcc dot gnu dot org 2005-12-18 11:20 ---
Subject: Bug 24378
Author: dorit
Date: Sun Dec 18 11:20:17 2005
New Revision: 108750
URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=108750
Log:
PR tree-optimization/24378
* tree-vect
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