[Bug tree-optimization/49622] [4.4 Regression] Compiler segfault

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49622

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|                            |x86_64-*-*
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2011.07.04 09:37:11
          Component|c                           |tree-optimization
      Known to work|                            |4.3.6, 4.5.0
   Target Milestone|---                         |4.4.7
            Summary|Compiler segfault           |[4.4 Regression] Compiler
                   |                            |segfault
     Ever Confirmed|0                           |1

--- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-07-04 
09:37:11 UTC ---
Checking enabled it ICEs at

#2  0x00000000009ffede in execute_todo (flags=7)
    at /space/rguenther/src/svn/gcc-4_4-branch/gcc/passes.c:1017
1017        gcc_assert (flags & TODO_update_ssa_any);

after FRE:

Inserted pretmp.47_13 = VIEW_CONVERT_EXPR<v4si>(D.6253);
 in predecessor 2
Replaced p.i with pretmp.47_13 in D.6236_2 = p.i;
Replaced p.i with pretmp.47_13 in D.6236_5 = p.i;

D.6253 should be an SSA name.  I suppose a DECL_GIMPLE_REG_P setting is
missing somewhere.