[Bug middle-end/40421] New: [4.5 Regression] Revision 148352 failed 416.gamess in SPEC CPU 2006

[Bug middle-end/40421] New: [4.5 Regression] Revision 148352 failed 416.gamess in SPEC CPU 2006

[hjl dot tools at gmail dot com]

On Linux/x86-64, revision 148352:

http://gcc.gnu.org/ml/gcc-cvs/2009-06/msg00332.html

failed 416.gamess in SPEC CPU 2006:

gfortran -c -o hess.fppized.o    -O3 -ffast-math -funroll-loops      
-DSPEC_CPU_LP64  -ffixed-form       hess.fppized.f
hess.fppized.f: In function 'vrot2':
hess.fppized.f:3068:0: internal compiler error: tree check: expected class
'type', have 'exceptional' (block) in fold_convert, at fold-const.c:2545
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
specmake[1]: *** [hess.fppized.o] Error 1


-- 
           Summary: [4.5 Regression]  Revision 148352 failed 416.gamess in
                    SPEC CPU 2006
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: hjl dot tools at gmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40421

[Bug middle-end/40421] [4.5 Regression] Revision 148352 failed 416.gamess in SPEC CPU 2006

[hjl dot tools at gmail dot com]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
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------- Comment #1 from hjl dot tools at gmail dot com  2009-06-12 01:12 -------
[hjl@gnu-34 build_base_o3.0000]$ cat foo.f
      SUBROUTINE VROT2(N,DIS)
      IMPLICIT DOUBLE PRECISION (A-H,O-Z)
      PARAMETER(ZERO=0.0D+00)
      COMMON /SYMSPD/ PTR(3,144)
      DIMENSION DIS(3,2),TMP(3,2)
      DO I = 1,3
        TMP1 = ZERO
        DO J = 1,3
          TMP1 = TMP1 + PTR(I,N+J)
        END DO
        TMP(I,1) = TMP1
      END DO
      DO I = 1,3
        DIS(I,1) = TMP(I,1)
      END DO
      RETURN
      END
[hjl@gnu-34 build_base_o3.0000]$ /export/gnu/import/rrs/148352/usr/bin/gfortran
-c -o hess.fppized.o    -O3 -ffast-math -funroll-loops       -DSPEC_CPU_LP64 
-ffixed-form foo.f
foo.f: In function ‘vrot2’:
foo.f:1:0: internal compiler error: tree check: expected class ‘type’, have
‘exceptional’ (block) in lower_bound_in_type, at tree.c:8588
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
[hjl@gnu-34 build_base_o3.0000]$ 


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40421

[Bug middle-end/40421] [4.5 Regression] Revision 148352 failed 416.gamess in SPEC CPU 2006

[hjl dot tools at gmail dot com]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
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------- Comment #2 from hjl dot tools at gmail dot com  2009-06-12 01:22 -------
Valgrind reports:

==8507== Use of uninitialised value of size 8
==8507==    at 0xACFC32: determine_exit_conditions (tree-ssa-loop-manip.c:688)
==8507==    by 0xAD0178: tree_transform_and_unroll_loop
(tree-ssa-loop-manip.c:891)
==8507==    by 0xA3EB28: tree_predictive_commoning_loop (tree-predcom.c:2572)
==8507==    by 0xA3EC55: tree_predictive_commoning (tree-predcom.c:2609)
==8507==    by 0xADE60A: run_tree_predictive_commoning (tree-ssa-loop.c:184)
==8507==    by 0x8B6E08: execute_one_pass (passes.c:1289)
==8507==    by 0x8B704F: execute_pass_list (passes.c:1338)
==8507==    by 0x8B706D: execute_pass_list (passes.c:1339)
==8507==    by 0x8B706D: execute_pass_list (passes.c:1339)
==8507==    by 0xA2C5D0: tree_rest_of_compilation (tree-optimize.c:394)
==8507==    by 0xC4CC31: cgraph_expand_function (cgraphunit.c:1097)
==8507==    by 0xC4CDE1: cgraph_expand_all_functions (cgraphunit.c:1156)
foo.f: In function ‘vrot2’:
foo.f:1:0: internal compiler error: tree check: expected class ‘type’, have
‘exceptional’ (block) in lower_bound_in_type, at tree.c:8588
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40421

[Bug middle-end/40421] [4.5 Regression] Revision 148352 failed 416.gamess in SPEC CPU 2006

[dominiq at lps dot ens dot fr]

------- Comment #3 from dominiq at lps dot ens dot fr  2009-06-12 09:45 -------
The code in comment #1 compiles on powerpc-apple-darwin9 at revision 148391
with '-O3 -ffast-math -funroll-loops'. On i686-apple-darwin9 at revision
148399, compilation fails at -O3 with:

[ibook-dhum] f90/bug% gfc -O3 pr40421.f90
pr40421.f90: In function 'vrot2':
pr40421.f90:1:0: internal compiler error: Segmentation fault

but it compiles with '-O2 -ftree-vectorize -ffast-math -funroll-loops'.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40421

[Bug tree-optimization/40421] [4.5 Regression] Revision 148352 failed 416.gamess in SPEC CPU 2006

[rguenth at gcc dot gnu dot org]

------- Comment #4 from rguenth at gcc dot gnu dot org  2009-06-13 14:38 -------
I have a fix.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |rguenth at gcc dot gnu dot
                   |dot org                     |org
             Status|UNCONFIRMED                 |ASSIGNED
          Component|middle-end                  |tree-optimization
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2009-06-13 14:38:07
               date|                            |
   Target Milestone|---                         |4.5.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40421

[Bug tree-optimization/40421] [4.5 Regression] Revision 148352 failed 416.gamess in SPEC CPU 2006

[rguenth at gcc dot gnu dot org]

------- Comment #5 from rguenth at gcc dot gnu dot org  2009-06-13 17:08 -------
Fixed.


-- 

rguenth at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40421

[Bug tree-optimization/40421] [4.5 Regression] Revision 148352 failed 416.gamess in SPEC CPU 2006

[jakub at gcc dot gnu dot org]

------- Comment #6 from jakub at gcc dot gnu dot org  2010-07-01 12:47 -------
Subject: Bug 40421

Author: jakub
Date: Thu Jul  1 12:47:26 2010
New Revision: 161668

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=161668
Log:
        Backport from mainline
        2009-06-13  Richard Guenther  <rguenther@suse.de>

        PR tree-optimization/40421
        * tree-predcom.c (should_unroll_loop_p): Remove.
        (tree_predictive_commoning_loop): Use can_unroll_loop_p.

        * gfortran.fortran-torture/compile/pr40421.f: New testcase.

        * gfortran.fortran-torture/compile/pr40421.f90: New test.

Added:
   
branches/gcc-4_4-branch/gcc/testsuite/gfortran.fortran-torture/compile/pr40421.f
   
branches/gcc-4_4-branch/gcc/testsuite/gfortran.fortran-torture/compile/pr40421.f90
Modified:
    branches/gcc-4_4-branch/gcc/ChangeLog
    branches/gcc-4_4-branch/gcc/testsuite/ChangeLog
    branches/gcc-4_4-branch/gcc/tree-predcom.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40421

[Bug tree-optimization/40421] [4.5 Regression] Revision 148352 failed 416.gamess in SPEC CPU 2006

[jakub at gcc dot gnu dot org]

------- Comment #7 from jakub at gcc dot gnu dot org  2010-07-01 12:54 -------
Subject: Bug 40421

Author: jakub
Date: Thu Jul  1 12:53:44 2010
New Revision: 161669

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=161669
Log:
        PR tree-optimization/40421
        * gfortran.fortran-torture/compile/pr40421.f90: New test.

Added:
    trunk/gcc/testsuite/gfortran.fortran-torture/compile/pr40421.f90
Modified:
    trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40421

[Bug tree-optimization/40421] [4.5 Regression] Revision 148352 failed 416.gamess in SPEC CPU 2006

[jakub at gcc dot gnu dot org]

------- Comment #8 from jakub at gcc dot gnu dot org  2010-07-01 12:55 -------
Subject: Bug 40421

Author: jakub
Date: Thu Jul  1 12:55:28 2010
New Revision: 161670

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=161670
Log:
        PR tree-optimization/40421
        * gfortran.fortran-torture/compile/pr40421.f90: New test.

Added:
   
branches/gcc-4_5-branch/gcc/testsuite/gfortran.fortran-torture/compile/pr40421.f90
Modified:
    branches/gcc-4_5-branch/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40421