[Bug fortran/41344] New: ICE / Bus error on OpenMP compile

[Bug fortran/41344] New: ICE / Bus error on OpenMP compile

[george at gcc dot gnu dot org]

Compilation successful without -fopenmp; ICE only with -fopenmp

Using latest binary release on gfortran / GCC Wiki

Code attached.

#gfortran -v -save-temps -fopenmp -c -o xrotate.o xrotate.f
Using built-in specs.
Target: i386-apple-darwin8.10.1
Configured with: /tmp/gfortran-20090604/ibin/../gcc/configure
--prefix=/usr/local/gfortran --enable-languages=c,fortran
--with-gmp=/tmp/gfortran-20090604/gfortran_libs --enable-bootstrap
Thread model: posix
gcc version 4.5.0 20090604 (experimental) [trunk revision 148180] (GCC) 
COLLECT_GCC_OPTIONS='-mmacosx-version-min=10.5.6' '-v' '-save-temps' '-fopenmp'
'-c' '-o' 'xrotate.o' '-mtune=generic'
 /usr/local/gfortran/libexec/gcc/i386-apple-darwin8.10.1/4.5.0/f951 xrotate.f
-ffixed-form -fPIC -quiet -dumpbase xrotate.f -mmacosx-version-min=10.5.6
-mtune=generic -auxbase-strip xrotate.o -version -fopenmp
-fintrinsic-modules-path
/usr/local/gfortran/lib/gcc/i386-apple-darwin8.10.1/4.5.0/finclude -o xrotate.s
GNU Fortran (GCC) version 4.5.0 20090604 (experimental) [trunk revision 148180]
(i386-apple-darwin8.10.1)
        compiled by GNU C version 4.5.0 20090604 (experimental) [trunk revision
148180], GMP version 4.3.1, MPFR version 2.4.1-p5
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
GNU Fortran (GCC) version 4.5.0 20090604 (experimental) [trunk revision 148180]
(i386-apple-darwin8.10.1)
        compiled by GNU C version 4.5.0 20090604 (experimental) [trunk revision
148180], GMP version 4.3.1, MPFR version 2.4.1-p5
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
xrotate.f: In function 'xrotate':
xrotate.f:1275:0: internal compiler error: Bus error
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.


-- 
           Summary: ICE / Bus error on OpenMP compile
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: george at gcc dot gnu dot org
 GCC build triplet: i386-apple-darwin8.10.1
  GCC host triplet: i386-apple-darwin8.10.1
GCC target triplet: i386-apple-darwin8.10.1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41344

[Bug fortran/41344] ICE / Bus error on OpenMP compile

[george at gcc dot gnu dot org]

------- Comment #1 from george at gcc dot gnu dot org  2009-09-12 17:34 -------
Created an attachment (id=18573)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=18573&action=view)
Code that elicits the ICE.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41344

[Bug middle-end/41344] [4.5 Regression] ICE / Bus error on OpenMP compile

[rguenth at gcc dot gnu dot org]

------- Comment #2 from rguenth at gcc dot gnu dot org  2009-09-12 17:40 -------
Confirmed.

#0  0x085b0193 in main_block_label (label=0xb7bb63f0)
    at /home/richard/src/trunk/gcc/tree-cfg.c:1065
1065      tree main_label = label_for_bb[bb->index].label;
(gdb) p bb
$2 = (basic_block) 0x0

#1  0x085b0486 in cleanup_dead_labels ()
    at /home/richard/src/trunk/gcc/tree-cfg.c:1141
#2  0x085ad8eb in build_gimple_cfg (seq=0xb7d9836c)
    at /home/richard/src/trunk/gcc/tree-cfg.c:200
#3  0x085ad992 in execute_build_cfg ()


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
          Component|fortran                     |middle-end
     Ever Confirmed|0                           |1
 GCC target triplet|i386-apple-darwin8.10.1     |i?86-*-*
   Last reconfirmed|0000-00-00 00:00:00         |2009-09-12 17:40:27
               date|                            |
            Summary|ICE / Bus error on OpenMP   |[4.5 Regression] ICE / Bus
                   |compile                     |error on OpenMP compile
   Target Milestone|---                         |4.5.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41344

[Bug middle-end/41344] [4.5 Regression] ICE / Bus error on OpenMP compile

[george at gcc dot gnu dot org]

------- Comment #3 from george at gcc dot gnu dot org  2009-09-16 04:49 -------
Additional investigation reveals that the ICE is triggered by OpenMP
conformance violation.  There is a go to out of the body of an OMP parallel
region.  Commenting out line 1105 of xrotate.f suppresses the ICE and leads to
successful compilation with -fopenmp. 


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41344

[Bug middle-end/41344] [4.5 Regression] ICE / Bus error on OpenMP compile

[george at gcc dot gnu dot org]

------- Comment #4 from george at gcc dot gnu dot org  2009-09-16 05:00 -------
Created an attachment (id=18592)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=18592&action=view)
Simplified test case that elicits the ICE


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41344

[Bug middle-end/41344] [4.5 Regression] ICE / Bus error on OpenMP compile

[rguenth at gcc dot gnu dot org]

-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |accepts-invalid, ice-on-
                   |                            |invalid-code
           Priority|P3                          |P2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41344

[Bug middle-end/41344] [4.4/4.5 Regression] ICE / Bus error on OpenMP compile

[hjl dot tools at gmail dot com]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: Type: text/plain, Size: 541 bytes --]



------- Comment #5 from hjl dot tools at gmail dot com  2009-12-27 20:58 -------
Gcc 4.3.4 gave

pr41344.f: In function âxrotateâ:
pr41344.f:10: error: invalid exit from OpenMP structured block


-- 

hjl dot tools at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.5.0                       |4.4.3
            Version|4.5.0                       |4.4.2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41344

[Bug middle-end/41344] [4.4/4.5 Regression] ICE / Bus error on OpenMP compile

[hjl dot tools at gmail dot com]

------- Comment #6 from hjl dot tools at gmail dot com  2009-12-27 23:57 -------
It is caused by tuples merge:

http://gcc.gnu.org/ml/gcc-cvs/2008-07/msg00919.html


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41344

[Bug middle-end/41344] [4.4/4.5 Regression] ICE / Bus error on OpenMP compile

[hjl dot tools at gmail dot com]

------- Comment #7 from hjl dot tools at gmail dot com  2009-12-28 01:09 -------
The omplower pass turns

---
  #pragma omp parallel private(ix) private(ndfl)
    {
      ix = 0;
      {
        integer(kind=4) D.1393;

        D.1393 = dfm.ndfl;
        #pragma omp for private(i)
        for (i = 1; i <= D.1393; i = i + 1)
          {
            ix = ix + 1;
            if (ix > 5) goto __label_009000; else goto <D.1396>;
            <D.1396>:
            L.1:
          }
      }
    }
  __label_009000:
---

into:

---
{
    #pragma omp parallel private(ix) private(ndfl) [child fn: xrotate_.omp_fn.0
(???)]
      {
        ix = 0;
        {
          integer(kind=4) D.1393;

          D.1393 = dfm.ndfl;
          {
            integer(kind=4) D.1407;
            integer(kind=4) i;

            D.1407 = D.1393;
            #pragma omp for private(i)
            for (i = 1; i <= D.1407; i = i + 1)
            ix = ix + 1;
            if (ix > 5) goto <D.1404>; else goto <D.1405>;
            <D.1405>:
            <D.1406>:
            #pragma omp continue (i, i)
            #pragma omp return
          }
        }
        #pragma omp return
      }
  }
  __label_009000:
---

D.1404 isn't defined anywhere. Also I didn't see diagnose_sb_2 handle
GIMPLE_COND stmt with GIMPLE_GOTO stmt.


-- 

hjl dot tools at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jakub at redhat dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41344

[Bug middle-end/41344] [4.4/4.5 Regression] ICE / Bus error on OpenMP compile

[hjl dot tools at gmail dot com]

------- Comment #8 from hjl dot tools at gmail dot com  2009-12-28 02:19 -------
Created an attachment (id=19398)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=19398&action=view)
A patch

Does this patch make any senses?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41344

[Bug middle-end/41344] [4.4/4.5 Regression] ICE / Bus error on OpenMP compile

[hjl dot tools at gmail dot com]

------- Comment #9 from hjl dot tools at gmail dot com  2009-12-28 14:59 -------
A patch is posted at

http://gcc.gnu.org/ml/gcc-patches/2009-12/msg01156.html


-- 

hjl dot tools at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hjl dot tools at gmail dot
                   |                            |com
                URL|                            |http://gcc.gnu.org/ml/gcc-
                   |                            |patches/2009-
                   |                            |12/msg01156.html


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41344

[Bug middle-end/41344] [4.4/4.5 Regression] ICE / Bus error on OpenMP compile

[hjl at gcc dot gnu dot org]

------- Comment #10 from hjl at gcc dot gnu dot org  2009-12-28 16:41 -------
Subject: Bug 41344

Author: hjl
Date: Mon Dec 28 16:41:33 2009
New Revision: 155487

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=155487
Log:
Handle GIMPLE_COND in diagnose_sb_2.

gcc/

2009-12-28  H.J. Lu  <hongjiu.lu@intel.com>

        PR middle-end/41344
        * omp-low.c (diagnose_sb_2): Handle GIMPLE_COND.

gcc/testsuite/

2009-12-28  H.J. Lu  <hongjiu.lu@intel.com>

        * gfortran.dg/gomp/pr41344.f: New.

Added:
    trunk/gcc/testsuite/gfortran.dg/gomp/pr41344.f
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/omp-low.c
    trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41344

[Bug middle-end/41344] [4.4/4.5 Regression] ICE / Bus error on OpenMP compile

[hjl at gcc dot gnu dot org]

------- Comment #11 from hjl at gcc dot gnu dot org  2009-12-28 16:44 -------
Subject: Bug 41344

Author: hjl
Date: Mon Dec 28 16:44:34 2009
New Revision: 155488

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=155488
Log:
Mention PR middle-end/41344.

Modified:
    trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41344

[Bug middle-end/41344] [4.4/4.5 Regression] ICE / Bus error on OpenMP compile

[hjl at gcc dot gnu dot org]

------- Comment #12 from hjl at gcc dot gnu dot org  2009-12-28 16:46 -------
Subject: Bug 41344

Author: hjl
Date: Mon Dec 28 16:46:11 2009
New Revision: 155489

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=155489
Log:
Backport from mainline: Handle GIMPLE_COND in diagnose_sb_2.

gcc/

2009-12-28  H.J. Lu  <hongjiu.lu@intel.com>

        Backport from mainline:
        2009-12-28  H.J. Lu  <hongjiu.lu@intel.com>

        PR middle-end/41344
        * omp-low.c (diagnose_sb_2): Handle GIMPLE_COND.

gcc/testsuite/

2009-12-28  H.J. Lu  <hongjiu.lu@intel.com>

        Backport from mainline:
        2009-12-28  H.J. Lu  <hongjiu.lu@intel.com>

        PR middle-end/41344
        * gfortran.dg/gomp/pr41344.f: New.

Added:
    branches/gcc-4_4-branch/gcc/testsuite/gfortran.dg/gomp/pr41344.f
      - copied unchanged from r155487,
trunk/gcc/testsuite/gfortran.dg/gomp/pr41344.f
Modified:
    branches/gcc-4_4-branch/gcc/ChangeLog
    branches/gcc-4_4-branch/gcc/omp-low.c
    branches/gcc-4_4-branch/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41344

[Bug middle-end/41344] [4.4/4.5 Regression] ICE / Bus error on OpenMP compile

[hjl dot tools at gmail dot com]

------- Comment #13 from hjl dot tools at gmail dot com  2009-12-28 16:46 -------
Fixed.


-- 

hjl dot tools at gmail dot com changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41344

[Bug middle-end/41344] [4.4/4.5 Regression] ICE / Bus error on OpenMP compile

[janus at gcc dot gnu dot org]

------- Comment #14 from janus at gcc dot gnu dot org  2009-12-28 21:41 -------
*** Bug 42484 has been marked as a duplicate of this bug. ***


-- 

janus at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |janus at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41344