[Bug tree-optimization/21831] New: [4.1 Regression] gcc.dg/vect/vect-97.c fails

[Bug tree-optimization/21831] New: [4.1 Regression] gcc.dg/vect/vect-97.c fails

[jsm28 at gcc dot gnu dot org]

FAIL: gcc.dg/vect/vect-97.c (test for excess errors)
appeared on mainline on ia64-hp-hpux11.23 between 20050529 and 20050530.
gcc-testresults also indicates it failing on ia64-linux.

/home/gcc/nightlies/src-mainline-2005-05-30/gcc-mainline/gcc/testsuite/gcc.dg/vect/vect-97.c:
In function 'main1':
/home/gcc/nightlies/src-mainline-2005-05-30/gcc-mainline/gcc/testsuite/gcc.dg/vect/vect-97.c:11:
error: Definition in block 0 follows the use
for SSA_NAME: cb_147 in statement:
#   VUSE <cb_147>;
vect_var_.28_99 = *vect_pcb.29_98;
/home/gcc/nightlies/src-mainline-2005-05-30/gcc-mainline/gcc/testsuite/gcc.dg/vect/vect-97.c:11:
internal compiler error: verify_ssa failed.

-- 
           Summary: [4.1 Regression] gcc.dg/vect/vect-97.c 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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21831

[Bug tree-optimization/21831] [4.1 Regression] gcc.dg/vect/vect-97.c fails

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code
   Target Milestone|---                         |4.1.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21831

[Bug tree-optimization/21831] [4.1 Regression] gcc.dg/vect/vect-97.c fails

[kbesaw at us dot ibm dot com]

------- Additional Comments From kbesaw at us dot ibm dot com  2005-06-06 23:45 -------
I tried vect-97.c on power-pc and couldn't reproduce the problem.
I don't know if this means that the problem goes away with recent
patches or that it only occurs when vectorizing on ia64.  I don't
have the ability to build and test on ia64.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21831

[Bug tree-optimization/21831] [4.1 Regression] gcc.dg/vect/vect-97.c fails

[dorit at il dot ibm dot com]

------- Additional Comments From dorit at il dot ibm dot com  2005-06-07 07:42 -------
> I tried vect-97.c on power-pc and couldn't reproduce the problem.
> I don't know if this means that the problem goes away with recent
> patches or that it only occurs when vectorizing on ia64.  I don't
> have the ability to build and test on ia64.

I don't see this failure anymore on i686-pc-linux-gnu and powerpc-apple-darwin.



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21831

[Bug tree-optimization/21831] [4.1 Regression] gcc.dg/vect/vect-97.c fails

[joseph at codesourcery dot com]

------- Additional Comments From joseph at codesourcery dot com  2005-06-07 17:10 -------
Subject: Re:  [4.1 Regression] gcc.dg/vect/vect-97.c
 fails

On Tue, 7 Jun 2005, dorit at il dot ibm dot com wrote:

> 
> ------- Additional Comments From dorit at il dot ibm dot com  2005-06-07 07:42 -------
> > I tried vect-97.c on power-pc and couldn't reproduce the problem.
> > I don't know if this means that the problem goes away with recent
> > patches or that it only occurs when vectorizing on ia64.  I don't
> > have the ability to build and test on ia64.
> 
> I don't see this failure anymore on i686-pc-linux-gnu and powerpc-apple-darwin.

When were you seeing it on those platforms?  My monitoring has never shown 
this as an i686-pc-linux-gnu failure, but it still fails on ia64-hpux, 
both -milp32 and -mlp64, as of today's mainline.



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21831

[Bug tree-optimization/21831] [4.1 Regression] gcc.dg/vect/vect-97.c fails

[dorit at il dot ibm dot com]

------- Additional Comments From dorit at il dot ibm dot com  2005-06-07 19:49 -------
> When were you seeing it on those platforms?  My monitoring has never shown 
> this as an i686-pc-linux-gnu failure, but it still fails on ia64-hpux, 
> both -milp32 and -mlp64, as of today's mainline.

you're right, I might have never seen this failure on these platforms.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21831

[Bug tree-optimization/21831] [4.1 Regression] gcc.dg/vect/vect-97.c fails

[jsm28 at gcc dot gnu dot org]

------- Additional Comments From jsm28 at gcc dot gnu dot org  2005-06-14 16:12 -------
Appeared between 2005-05-29 13:00 UTC and 2005-05-29 14:30 UTC.  I.e., caused by:

Changes by:     dorit@gcc.gnu.org       2005-05-29 13:14:43

Modified files:
        gcc            : ChangeLog tree-flow.h tree-optimize.c 
                         tree-ssa-alias.c tree-vect-transform.c 

Log message:
        2005-05-29  Keith Besaw  <kbesaw@us.ibm.com>
        
        * tree-ssa-alias.c (new_type_alias): New procedure to
        create a type memory tag for a pointer with a may-alias
        set determined from a variable declaration.
        * tree-flow.h: export declaration of new_type_alias
        * tree-optimize.c (init_tree_optimization_passes): document
        that pass_may_alias cannot be called after pass_vectorize.
        * tree-vect-transform (vect_create_data_ref_ptr): Call
        new_type_alias when an type memory tag isn't available
        for a reference.
        (vectorizable_store): Use copy_virtual_operands to update
        virtual defs in place (so that loop_version can be called).
        Call mark_for_renaming for the virtual defs in case peeling
        is done and virtual uses outside the loop need to be updated.

The problem ought to be reproducible with a cross-compiler cc1.


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dorit at gcc dot gnu dot
                   |                            |org, kbesaw at us dot ibm
                   |                            |dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21831

[Bug tree-optimization/21831] [4.1 Regression] gcc.dg/vect/vect-97.c fails

[ro at gcc dot gnu dot org]

------- Additional Comments From ro at gcc dot gnu dot org  2005-06-28 20:39 -------
Also occurs on alpha-dec-osf5.1b as of 20050627:

FAIL: gcc.dg/vect/vect-97.c (test for excess errors)
Excess errors:
/vol/gnu/src/gcc/gcc-dist/gcc/testsuite/gcc.dg/vect/vect-97.c:11: error:
Definition in block 0 follows the use
for SSA_NAME: cb_137 in statement:
#   VUSE <cb_137>;
vect_var_.51_89 = *vect_pcb.52_88;
/vol/gnu/src/gcc/gcc-dist/gcc/testsuite/gcc.dg/vect/vect-97.c:11: internal
compiler error: verify_ssa failed.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ro at techfak dot uni-
                   |                            |bielefeld dot de


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21831

[Bug tree-optimization/21831] [4.1 Regression] gcc.dg/vect/vect-97.c fails

[jsm28 at gcc dot gnu dot org]

------- Additional Comments From jsm28 at gcc dot gnu dot org  2005-07-30 19:50 -------
Started passing again on ia64-hpux between 20050708 and 20050711, I don't know
about on the other platforms discussed.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21831

[Bug tree-optimization/21831] [4.1 Regression] gcc.dg/vect/vect-97.c fails

[janis at gcc dot gnu dot org]

------- Additional Comments From janis at gcc dot gnu dot org  2005-09-16 00:45 -------
Test vect-97.c currently passes on ia64-linux and passed on alpha-dec-osf5.1b
on 20050805, and the submitter said it passes on ia64-hpux; this PR can
probably be closed.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21831

[Bug tree-optimization/21831] [4.1 Regression] gcc.dg/vect/vect-97.c fails

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-09-16 00:53 -------
Fixed so closing.

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21831