[Bug tree-optimization/21630] New: [4.1 Regression] gcc.dg/vect/vect-none.c scan-tree-dump-times vectorized 1 loops 1 fails

[Bug tree-optimization/21630] New: [4.1 Regression] gcc.dg/vect/vect-none.c scan-tree-dump-times vectorized 1 loops 1 fails

[jsm28 at gcc dot gnu dot org]

The failure

FAIL: gcc.dg/vect/vect-none.c scan-tree-dump-times vectorized 1 loops 1

appeared on mainline on i686-pc-linux-gnu between 20050516 and 20050517.  It may
not be straightforward to tell which patch was responsible since the test ICEd
(bug 21448) with the former compiler and a pass or fail in conjunction with an
ICE may just be coincidental.  However, the .sum file from 20050506 (before the
ICE was introduced) shows

PASS: gcc.dg/vect/vect-none.c scan-tree-dump-times vectorized 1 loops 1

so this test has regressed relative to then.

-- 
           Summary: [4.1 Regression] gcc.dg/vect/vect-none.c scan-tree-dump-
                    times vectorized 1 loops 1 fails
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jsm28 at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21630

[Bug tree-optimization/21630] [4.1 Regression] gcc.dg/vect/vect-none.c scan-tree-dump-times vectorized 1 loops 1 fails

[amylaar at gcc dot gnu dot org]

------- Additional Comments From amylaar at gcc dot gnu dot org  2005-05-19 14:48 -------
A 20050513 dump shows:
...
/mnt/scratch/nightly/2005-05-13/srcw/gcc/testsuite/gcc.dg/vect/vect-none.c:171:
note: not vectorized: complicated access pattern.
/mnt/scratch/nightly/2005-05-13/srcw/gcc/testsuite/gcc.dg/vect/vect-none.c:72:
note: vectorized 1 loops in function.
foo (n)
...
20050517 shows:
...
/mnt/scratch/nightly/2005-05-17-orv/srcw/gcc/testsuite/gcc.dg/vect/vect-none.c:171:
note: not vectorized: complicated access pattern.
/mnt/scratch/nightly/2005-05-17-orv/srcw/gcc/testsuite/gcc.dg/vect/vect-none.c:72:
note: vectorized 2 loops in function.
foo (n)
...

So, the test fails because we don't vectorize the expected number (1)of loops -
we vectorize more.  I suppose we should change the target patterns for the
scan-tree-dump-times tests.


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dpatel at apple dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21630

[Bug tree-optimization/21630] [4.1 Regression] gcc.dg/vect/vect-none.c scan-tree-dump-times vectorized 1 loops 1 fails

[amylaar at gcc dot gnu dot org]

------- Additional Comments From amylaar at gcc dot gnu dot org  2005-05-19 15:33 -------
A break-up of this test is currently discussed on gcc-patches:
http://gcc.gnu.org/ml/gcc-patches/2005-05/msg01963.html

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|dpatel at apple dot com     |dorit at il dot ibm dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21630

[Bug tree-optimization/21630] [4.1 Regression] gcc.dg/vect/vect-none.c scan-tree-dump-times vectorized 1 loops 1 fails

[irar at il dot ibm dot com]

------- Additional Comments From irar at il dot ibm dot com  2005-05-22 11:42 -------
The problem is in vect-none.c itself. This patch fixes the problem 
http://gcc.gnu.org/ml/gcc-patches/2005-05/msg02124.html (waiting for ok). 

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |irar at il dot ibm dot com
                   |dot org                     |
             Status|UNCONFIRMED                 |ASSIGNED
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2005-05-22 11:42:09
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21630

[Bug testsuite/21630] [4.1 Regression] gcc.dg/vect/vect-none.c scan-tree-dump-times vectorized 1 loops 1 fails

[themis_hv at yahoo dot co dot uk]

------- Additional Comments From themis_hv at yahoo dot co dot uk  2005-05-22 19:11 -------
(In reply to comment #3)
> The problem is in vect-none.c itself. This patch fixes the problem 
> http://gcc.gnu.org/ml/gcc-patches/2005-05/msg02124.html (waiting for ok). 

FYI I have regression tested this patch and I still get

FAIL: gcc.dg/vect/vect-none.c scan-tree-dump-times vectorized 1 loops 1

Test summary available at
http://gcc.gnu.org/ml/gcc-testresults/2005-05/msg01442.html




-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21630

[Bug testsuite/21630] [4.1 Regression] gcc.dg/vect/vect-none.c scan-tree-dump-times vectorized 1 loops 1 fails

[irar at il dot ibm dot com]

------- Additional Comments From irar at il dot ibm dot com  2005-05-23 05:28 -------
My patch removes vect-none.c, so it's impossible to get failures on this 
testcase. I guess, there is a problem either in how I created the patch (I 
did 'cvs remove' and 'cvs add', and 'cvs diff -N' afterwards) or in how you 
applied it.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21630

[Bug testsuite/21630] [4.1 Regression] gcc.dg/vect/vect-none.c scan-tree-dump-times vectorized 1 loops 1 fails

[themis_hv at yahoo dot co dot uk]

------- Additional Comments From themis_hv at yahoo dot co dot uk  2005-05-23 06:38 -------
(In reply to comment #5)
> My patch removes vect-none.c, so it's impossible to get failures on this 
> testcase. I guess, there is a problem either in how I created the patch (I 
> did 'cvs remove' and 'cvs add', and 'cvs diff -N' afterwards) or in how you 
> applied it.

I simply applied a copy of the patch from
http://gcc.gnu.org/ml/gcc-patches/2005-05/msg02124.html using patch command, it
applied onto the tree well except the changelog was REJECT Hunk, which is minor
IMHO (this was caused by my working copy of the tree being more up to date).

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21630

[Bug testsuite/21630] [4.1 Regression] gcc.dg/vect/vect-none.c scan-tree-dump-times vectorized 1 loops 1 fails

[themis_hv at yahoo dot co dot uk]

------- Additional Comments From themis_hv at yahoo dot co dot uk  2005-05-23 11:29 -------
I'll re-run the regression test later on.



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21630

[Bug testsuite/21630] [4.1 Regression] gcc.dg/vect/vect-none.c scan-tree-dump-times vectorized 1 loops 1 fails

[themis_hv at yahoo dot co dot uk]

------- Additional Comments From themis_hv at yahoo dot co dot uk  2005-05-23 18:58 -------
After analysing my build log carefully, there is problem with the patch:

patching file ChangeLog
Hunk #1 FAILED at 1.
1 out of 1 hunk FAILED -- saving rejects to file ChangeLog.rej
patching file gcc.dg/vect/vect-106.c
patching file gcc.dg/vect/vect-107.c
patching file gcc.dg/vect/vect-108.c
patching file gcc.dg/vect/vect-109.c
patching file gcc.dg/vect/vect-110.c
patching file gcc.dg/vect/vect-111.c
patching file gcc.dg/vect/vect-112.c
patching file gcc.dg/vect/vect-113.c
patching file gcc.dg/vect/vect-114.c
patch: **** unexpected end of file in patch

This will explain vect-none.c existed



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21630

[Bug testsuite/21630] [4.1 Regression] gcc.dg/vect/vect-none.c scan-tree-dump-times vectorized 1 loops 1 fails

[themis_hv at yahoo dot co dot uk]

------- Additional Comments From themis_hv at yahoo dot co dot uk  2005-05-23 19:01 -------
I have regression tested it, the test summary is available at
http://gcc.gnu.org/ml/gcc-testresults/2005-05/msg01512.html

Now the testsuite failure, I get is :

FAIL: gcc.dg/vect/vect-106.c (test for excess errors)



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21630

[Bug testsuite/21630] [4.1 Regression] gcc.dg/vect/vect-none.c scan-tree-dump-times vectorized 1 loops 1 fails

[irar at il dot ibm dot com]

------- Additional Comments From irar at il dot ibm dot com  2005-05-24 07:01 -------
Thanks for fixing the patch.
I can't reproduce vect-106.c failure on i686-pc-linux-gnu. Could you please 
give me some information?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21630

[Bug testsuite/21630] [4.1 Regression] gcc.dg/vect/vect-none.c scan-tree-dump-times vectorized 1 loops 1 fails

[irar at il dot ibm dot com]

------- Additional Comments From irar at il dot ibm dot com  2005-05-24 11:57 -------
I committed the patch, since I am not able to reproduce vect-106.c failure.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21630

[Bug testsuite/21630] [4.1 Regression] gcc.dg/vect/vect-none.c scan-tree-dump-times vectorized 1 loops 1 fails

[themis_hv at yahoo dot co dot uk]

------- Additional Comments From themis_hv at yahoo dot co dot uk  2005-05-24 15:45 -------
Regression tested with a updated copy of gcc 4.1 CVS and with patch. Test
summary is available at http://gcc.gnu.org/ml/gcc-testresults/2005-05/msg01563.html.

The test failure is gone!

The problem has caused by my system running out of PTYs, so I compiled a linux
kernel with more of them in.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21630

[Bug testsuite/21630] [4.1 Regression] gcc.dg/vect/vect-none.c scan-tree-dump-times vectorized 1 loops 1 fails

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-05-24 15:47 -------
Fixed.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.1.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21630