[Bug optimization/14692] New: [tree-ssa] ICE in canon_condition

["falk at debian dot org" <gcc-bugzilla at gcc dot gnu dot org>]

GNU C version 3.5-tree-ssa 20040318 (merged 20040307)

% cat test.c
void assert_failed (void);           
void eidecpos_1 (unsigned char *pos, long n)
{
  int i;
  for (i = 0; i < n; i++)
    {
      const unsigned char *dc_ptr1 = pos;
      pos--;
      if (dc_ptr1 - pos == 1)
        assert_failed ();
    }
}

% gcc -c -O3 test.c
test.c: In function `eidecpos_1':             
test.c:12: internal compiler error: in canon_condition, at loop-iv.c:1413
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.

Does not occur at -O2.

-- 
           Summary: [tree-ssa] ICE in canon_condition
           Product: gcc
           Version: tree-ssa
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P2
         Component: optimization
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: falk at debian dot org
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: alphaev68-unknown-linux-gnu
  GCC host triplet: alphaev68-unknown-linux-gnu
GCC target triplet: alphaev68-unknown-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14692