[Bug tree-optimization/24963] New: [4.1/4.2 Regression] gcc.dg/vect/vect-62.c scan-tree-dump-times not vectorized: redundant loop. no profit to vectorize. 1 fails

[Bug tree-optimization/24963] New: [4.1/4.2 Regression] gcc.dg/vect/vect-62.c scan-tree-dump-times not vectorized: redundant loop. no profit to vectorize. 1 fails

[jsm28 at gcc dot gnu dot org]

FAIL: gcc.dg/vect/vect-62.c scan-tree-dump-times not vectorized: redundant
loop. no profit to vectorize. 1
appeared on mainline on i686-pc-linux-gnu and ia64-hp-hpux11.23 (both -milp32
and -mlp64) between 20051118 (revision 107161) and 20051119 (revision 107213). 
This test previously PASSed in revision 107161, FAILing in 107213.  As the only
changes between 4.1 branching (107209) and 107213 are administrative changes as
part of the branching process, this regression presumably applies on 4.1 branch
as well.


-- 
           Summary: [4.1/4.2 Regression] gcc.dg/vect/vect-62.c scan-tree-
                    dump-times not vectorized: redundant loop. no profit to
                    vectorize. 1 fails
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jsm28 at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24963

[Bug tree-optimization/24963] [4.1/4.2 Regression] gcc.dg/vect/vect-62.c scan-tree-dump-times not vectorized: redundant loop. no profit to vectorize. 1 fails

[pinskia at gcc dot gnu dot org]

------- Comment #1 from pinskia at gcc dot gnu dot org  2005-11-21 00:52 -------
Confirmed, I saw this too.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pinskia at gcc dot gnu dot
                   |                            |org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2005-11-21 00:52:44
               date|                            |
   Target Milestone|---                         |4.1.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24963

[Bug tree-optimization/24963] [4.1/4.2 Regression] gcc.dg/vect/vect-62.c scan-tree-dump-times not vectorized: redundant loop. no profit to vectorize. 1 fails

[ebotcazou at gcc dot gnu dot org]

------- Comment #2 from ebotcazou at gcc dot gnu dot org  2005-12-05 07:59 -------
Present on SPARC too.

Dorit, is it only a matter of changing the expected error message?


-- 

ebotcazou at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dorit at il dot ibm dot com,
                   |                            |ebotcazou at gcc dot gnu dot
                   |                            |org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24963

[Bug tree-optimization/24963] [4.1/4.2 Regression] gcc.dg/vect/vect-62.c scan-tree-dump-times not vectorized: redundant loop. no profit to vectorize. 1 fails

[dorit at il dot ibm dot com]

------- Comment #3 from dorit at il dot ibm dot com  2005-12-05 14:17 -------
> Dorit, is it only a matter of changing the expected error message?

Yes - the error message checks that the vectorizer detected that it's not worth
while to vectorize the loop because all operations in the loop are either dead
or only used outside the loop and can be moved out of the loop (e.g.
invariants, inductions). In other words - the loop should have been optimized
away by scalar optimizations. Indeed, this is what now happens - so the
specific loop that issued this message does not exist anymore. This dg line can
be removed from the test.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24963

[Bug tree-optimization/24963] [4.1/4.2 Regression] gcc.dg/vect/vect-62.c scan-tree-dump-times not vectorized: redundant loop. no profit to vectorize. 1 fails

[ebotcazou at gcc dot gnu dot org]

------- Comment #4 from ebotcazou at gcc dot gnu dot org  2005-12-05 18:53 -------
Subject: Bug 24963

Author: ebotcazou
Date: Mon Dec  5 18:53:04 2005
New Revision: 108067

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=108067
Log:
        PR tree-optimization/24963
        * gcc.dg/vect/vect-62.c: Remove outdated dg-line.

        PR target/24108
        * gcc.dg/vect/vect-76.c: Do not XFAIL on vect_no_align platforms.

        PR target/18580
        * gcc.dg/vect/vect-reduc-1char.c: XFAIL on vect_no_int_max platforms.
        * gcc.dg/vect/vect-reduc-2short.c: Likewise.
        * gcc.dg/vect/vect-reduc-1short.c: Likewise.
        * gcc.dg/vect/vect-reduc-2char.c: Likewise.


Modified:
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/vect/vect-62.c
    trunk/gcc/testsuite/gcc.dg/vect/vect-76.c
    trunk/gcc/testsuite/gcc.dg/vect/vect-reduc-1char.c
    trunk/gcc/testsuite/gcc.dg/vect/vect-reduc-1short.c
    trunk/gcc/testsuite/gcc.dg/vect/vect-reduc-2char.c
    trunk/gcc/testsuite/gcc.dg/vect/vect-reduc-2short.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24963

[Bug tree-optimization/24963] [4.1/4.2 Regression] gcc.dg/vect/vect-62.c scan-tree-dump-times not vectorized: redundant loop. no profit to vectorize. 1 fails

[ebotcazou at gcc dot gnu dot org]

------- Comment #5 from ebotcazou at gcc dot gnu dot org  2005-12-05 18:54 -------
Subject: Bug 24963

Author: ebotcazou
Date: Mon Dec  5 18:54:22 2005
New Revision: 108068

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=108068
Log:
        PR tree-optimization/24963
        * gcc.dg/vect/vect-62.c: Remove outdated dg-line.

        PR target/24108
        * gcc.dg/vect/vect-76.c: Do not XFAIL on vect_no_align platforms.

        PR target/18580
        * gcc.dg/vect/vect-reduc-1char.c: XFAIL on vect_no_int_max platforms.
        * gcc.dg/vect/vect-reduc-2short.c: Likewise.
        * gcc.dg/vect/vect-reduc-1short.c: Likewise.
        * gcc.dg/vect/vect-reduc-2char.c: Likewise.


Modified:
    branches/gcc-4_1-branch/gcc/testsuite/ChangeLog
    branches/gcc-4_1-branch/gcc/testsuite/gcc.dg/vect/vect-62.c
    branches/gcc-4_1-branch/gcc/testsuite/gcc.dg/vect/vect-76.c
    branches/gcc-4_1-branch/gcc/testsuite/gcc.dg/vect/vect-reduc-1char.c
    branches/gcc-4_1-branch/gcc/testsuite/gcc.dg/vect/vect-reduc-1short.c
    branches/gcc-4_1-branch/gcc/testsuite/gcc.dg/vect/vect-reduc-2char.c
    branches/gcc-4_1-branch/gcc/testsuite/gcc.dg/vect/vect-reduc-2short.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24963

[Bug tree-optimization/24963] [4.1/4.2 Regression] gcc.dg/vect/vect-62.c scan-tree-dump-times not vectorized: redundant loop. no profit to vectorize. 1 fails

[ebotcazou at gcc dot gnu dot org]

------- Comment #6 from ebotcazou at gcc dot gnu dot org  2005-12-05 18:56 -------
See http://gcc.gnu.org/ml/gcc-patches/2005-12/msg00363.html


-- 

ebotcazou at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24963