[Bug middle-end/26835] ICE in f951 on valid code at -O2 -ftree-loop-linear

[rguenth at gcc dot gnu dot org]

------- Comment #1 from rguenth at gcc dot gnu dot org  2006-03-24 10:30 -------
Confirmed.  We ICE after IVOPTs during computation of dominance frontiers. 
Other than that, tree-loop-linear seems to be somewhat buggy in general.

Program received signal SIGSEGV, Segmentation fault.
0x081e85af in compute_dominance_frontiers_1 (frontiers=0x8929b90)
    at /space/rguenther/src/svn/summit/gcc/cfganal.c:1057
1057                      bitmap_set_bit (frontiers[runner->index], 
(gdb) bt
#0  0x081e85af in compute_dominance_frontiers_1 (frontiers=0x8929b90)
    at /space/rguenther/src/svn/summit/gcc/cfganal.c:1057
#1  0x081e8657 in compute_dominance_frontiers (frontiers=0x8929b90)
    at /space/rguenther/src/svn/summit/gcc/cfganal.c:1073
#2  0x081452d9 in update_ssa (update_flags=128)
    at /space/rguenther/src/svn/summit/gcc/tree-into-ssa.c:2755
#3  0x08546c15 in execute_todo (flags=197)
    at /space/rguenther/src/svn/summit/gcc/passes.c:765

I'd say it hints at a broken CFG.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dberlin at gcc dot gnu dot
                   |                            |org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
  GCC build triplet|powerpc64-linux             |
   GCC host triplet|powerpc64-linux             |
 GCC target triplet|powerpc64-linux             |
   Last reconfirmed|0000-00-00 00:00:00         |2006-03-24 10:30:17
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26835