[Bug tree-optimization/46168] New: ICE: verify_ssa failed: definition in block 6 does not dominate use in block 5 with -ftree-loop-linear

[Bug tree-optimization/46168] New: ICE: verify_ssa failed: definition in block 6 does not dominate use in block 5 with -ftree-loop-linear

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46168

           Summary: ICE: verify_ssa failed: definition in block 6 does not
                    dominate use in block 5 with -ftree-loop-linear
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zsojka@seznam.cz


Created attachment 22149
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22149
reduced testcase

Compiler output:
$ gcc -O -ftree-loop-linear pr46168.c 
pr46168.c: In function 'foo':
pr46168.c:2:1: error: definition in block 6 does not dominate use in block 5
for SSA_NAME: i16_8 in statement:
i16_28 = PHI <i16_16(7), i16_8(5)>
PHI argument
i16_8
for PHI node
i16_28 = PHI <i16_16(7), i16_8(5)>
pr46168.c:2:1: internal compiler error: verify_ssa failed
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Tested revisions:
r165915 - crash
4.5 r165781 - crash
4.4 r165754 - crash
4.4 r149995 - crash

[Bug tree-optimization/46168] ICE: verify_ssa failed: definition in block 6 does not dominate use in block 5 with -ftree-loop-linear

[dominiq at lps dot ens.fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46168

--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2010-10-25 20:50:24 UTC ---
0n x86_64-apple-darwin10, 4.5 revision 154654 crashes, but gcc version 4.5.0 is
OK (release checking).
On powerpc-apple-darwin9, gcc version 4.3.0 20071218 (experimental) (GCC)
crashes (at that time I did not recorded the revision).

[Bug tree-optimization/46168] [4.3/4.4/4.5/4.6 Regression] ICE: verify_ssa failed: definition in block 6 does not dominate use in block 5 with -ftree-loop-linear

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46168

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2010.10.26 08:36:39
            Summary|ICE: verify_ssa failed:     |[4.3/4.4/4.5/4.6
                   |definition in block 6 does  |Regression] ICE: verify_ssa
                   |not dominate use in block 5 |failed: definition in block
                   |with -ftree-loop-linear     |6 does not dominate use in
                   |                            |block 5 with
                   |                            |-ftree-loop-linear
     Ever Confirmed|0                           |1

[Bug tree-optimization/46168] [4.3/4.4/4.5/4.6 Regression] ICE: verify_ssa failed: definition in block 6 does not dominate use in block 5 with -ftree-loop-linear

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46168

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |spop at gcc dot gnu.org

--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> 2010-10-26 11:11:35 UTC ---
It is caused by revision 129494:

http://gcc.gnu.org/ml/gcc-cvs/2007-10/msg00599.html

[Bug tree-optimization/46168] [4.3/4.4/4.5/4.6 Regression] ICE: verify_ssa failed: definition in block 6 does not dominate use in block 5 with -ftree-loop-linear

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46168

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.3.6

[Bug tree-optimization/46168] [4.3/4.4/4.5/4.6 Regression] ICE: verify_ssa failed: definition in block 6 does not dominate use in block 5 with -ftree-loop-linear

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46168

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P2

[Bug tree-optimization/46168] [4.3/4.4/4.5/4.6 Regression] ICE: verify_ssa failed: definition in block 6 does not dominate use in block 5 with -ftree-loop-linear

[spop at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46168

--- Comment #3 from Sebastian Pop <spop at gcc dot gnu.org> 2011-01-18 20:54:43 UTC ---
Author: spop
Date: Tue Jan 18 20:54:40 2011
New Revision: 168965

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=168965
Log:
Add testcase for PR46168.

2011-01-18  Sebastian Pop  <sebastian.pop@amd.com>

    PR tree-optimization/46168
    * gcc.dg/graphite/pr46168.c: New.

Added:
    branches/graphite/gcc/testsuite/gcc.dg/graphite/pr46168.c
Modified:
    branches/graphite/gcc/ChangeLog.graphite

[Bug tree-optimization/46168] [4.3/4.4/4.5/4.6 Regression] ICE: verify_ssa failed: definition in block 6 does not dominate use in block 5 with -ftree-loop-linear

[spop at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46168

Sebastian Pop <spop at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
         AssignedTo|unassigned at gcc dot       |spop at gcc dot gnu.org
                   |gnu.org                     |

--- Comment #4 from Sebastian Pop <spop at gcc dot gnu.org> 2011-01-18 20:58:04 UTC ---
Fixed on the graphite branch.

[Bug tree-optimization/46168] [4.3/4.4/4.5/4.6 Regression] ICE: verify_ssa failed: definition in block 6 does not dominate use in block 5 with -ftree-loop-linear

[spop at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46168

--- Comment #5 from Sebastian Pop <spop at gcc dot gnu.org> 2011-01-25 21:25:13 UTC ---
Author: spop
Date: Tue Jan 25 21:25:02 2011
New Revision: 169255

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=169255
Log:
Add testcase for PR46168.

2011-01-18  Sebastian Pop  <sebastian.pop@amd.com>

    PR tree-optimization/46168
    * gcc.dg/graphite/pr46168.c: New.

Added:
    trunk/gcc/testsuite/gcc.dg/graphite/pr46168.c
Modified:
    trunk/gcc/testsuite/ChangeLog

[Bug tree-optimization/46168] [4.3/4.4/4.5/4.6 Regression] ICE: verify_ssa failed: definition in block 6 does not dominate use in block 5 with -ftree-loop-linear

[spop at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46168

Sebastian Pop <spop at gcc dot gnu.org> changed:

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

--- Comment #6 from Sebastian Pop <spop at gcc dot gnu.org> 2011-01-25 21:28:46 UTC ---
Fixed.

[Bug tree-optimization/46168] [4.3/4.4/4.5/4.6 Regression] ICE: verify_ssa failed: definition in block 6 does not dominate use in block 5 with -ftree-loop-linear

[dnovillo at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46168

--- Comment #7 from Diego Novillo <dnovillo at gcc dot gnu.org> 2011-02-02 17:48:33 UTC ---
Author: dnovillo
Date: Wed Feb  2 17:48:28 2011
New Revision: 169594

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=169594
Log:
Add testcase for PR46168.

2011-01-18  Sebastian Pop  <sebastian.pop@amd.com>

    PR tree-optimization/46168
    * gcc.dg/graphite/pr46168.c: New.

Added:
    branches/google/integration/gcc/testsuite/gcc.dg/graphite/pr46168.c
Modified:
    branches/google/integration/gcc/testsuite/ChangeLog