[Bug fortran/50415] New: gfortran -Ofast SIGSEGV in find_uses_to_rename_use

[Bug fortran/50415] New: gfortran -Ofast SIGSEGV in find_uses_to_rename_use

[zeccav at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50415

             Bug #: 50415
           Summary: gfortran -Ofast SIGSEGV in find_uses_to_rename_use
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zeccav@gmail.com


Created attachment 25291
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=25291
please compile it with -Ofast

gfortran -Ofast SIGSEGV in find_uses_to_rename_use

[Bug tree-optimization/50415] gfortran -Ofast SIGSEGV in find_uses_to_rename_use

[Joost.VandeVondele at pci dot uzh.ch]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50415

Joost VandeVondele <Joost.VandeVondele at pci dot uzh.ch> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2011-09-15
          Component|fortran                     |tree-optimization
     Ever Confirmed|0                           |1

--- Comment #1 from Joost VandeVondele <Joost.VandeVondele at pci dot uzh.ch> 2011-09-15 10:03:10 UTC ---
#0  find_uses_to_rename_use (bb=0x7ffff7eae7b8, use=0x7ffff5b56910,
use_blocks=Unhandled dwarf expression opcode 0xf3
) at ../../gcc/gcc/tree-ssa-loop-manip.c:1267
#1  find_uses_to_rename_use (bb=0x7ffff7eae7b8, use=0x7ffff5b56910,
use_blocks=Unhandled dwarf expression opcode 0xf3
) at ../../gcc/gcc/tree-ssa-loop-manip.c:232
#2  0x0000000000a06d10 in find_uses_to_rename_bb (bb=0x7ffff7eae7b8,
use_blocks=0x16d83c0, need_phis=0x16dfcd0) at
../../gcc/gcc/tree-ssa-loop-manip.c:302
#3  0x0000000000a07506 in find_uses_to_rename (changed_bbs=Unhandled dwarf
expression opcode 0xf3
) at ../../gcc/gcc/tree-ssa-loop-manip.c:331
#4  rewrite_into_loop_closed_ssa (changed_bbs=Unhandled dwarf expression opcode
0xf3
) at ../../gcc/gcc/tree-ssa-loop-manip.c:391
#5  0x000000000096bad4 in ldist_gen (loop=Unhandled dwarf expression opcode
0xf3
) at ../../gcc/gcc/tree-loop-distribution.c:1134
#6  distribute_loop (loop=Unhandled dwarf expression opcode 0xf3
) at ../../gcc/gcc/tree-loop-distribution.c:1216
#7  distribute_loop (loop=Unhandled dwarf expression opcode 0xf3
) at ../../gcc/gcc/tree-loop-distribution.c:1158
#8  0x000000000096c895 in tree_loop_distribution () at
../../gcc/gcc/tree-loop-distribution.c:1272
#9  0x0000000000876d37 in execute_one_pass (pass=0x1497f40) at
../../gcc/gcc/passes.c:2063
#10 0x00000000008770a5 in execute_pass_list (pass=0x1497f40) at
../../gcc/gcc/passes.c:2118
#11 0x00000000008770b7 in execute_pass_list (pass=0x14990e0) at
../../gcc/gcc/passes.c:2119

[Bug tree-optimization/50415] [4.7 Regression] gfortran -Ofast SIGSEGV in find_uses_to_rename_use

[dominiq at lps dot ens.fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50415

Dominique d'Humieres <dominiq at lps dot ens.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|gfortran -Ofast SIGSEGV in  |[4.7 Regression] gfortran
                   |find_uses_to_rename_use     |-Ofast SIGSEGV in
                   |                            |find_uses_to_rename_use

--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2011-09-15 10:33:01 UTC ---
This is a regression that occurred in the same range as pr50414 (between
revisions 173852 (OK) and 175707 (ICE)).

[Bug tree-optimization/50415] [4.7 Regression] gfortran -Ofast SIGSEGV in find_uses_to_rename_use

[dominiq at lps dot ens.fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50415

--- Comment #3 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2011-09-15 11:30:14 UTC ---
> This is a regression that occurred in the same range as pr50414 (between
> revisions 173852 (OK) and 175707 (ICE)).

r174030 is OK
r174283 gives the ICE.

[Bug tree-optimization/50415] [4.7 Regression] gfortran -Ofast SIGSEGV in find_uses_to_rename_use

[dominiq at lps dot ens.fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50415

--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> 2011-09-15 11:33:16 UTC ---
'-O2 -ftree-vectorize' is OK, '-O3' gives the ICE.

[Bug tree-optimization/50415] [4.7 Regression] gfortran -Ofast SIGSEGV in find_uses_to_rename_use

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50415

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.7.0

[Bug tree-optimization/50415] [4.7 Regression] gfortran -Ofast SIGSEGV in find_uses_to_rename_use

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50415

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P1
                 CC|                            |spop at gcc dot gnu.org
      Known to work|                            |4.6.2

--- Comment #5 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-10-10 14:01:20 UTC ---
Confirmed.  Triggered from loop distribution.

[Bug tree-optimization/50415] [4.7 Regression] gfortran -Ofast SIGSEGV in find_uses_to_rename_use

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50415

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |jakub at gcc dot gnu.org
         Resolution|                            |FIXED

--- Comment #6 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-11-23 14:20:01 UTC ---
Seems to be fixed by
http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=181255