[Bug tree-optimization/36991] [4.3/4.4 Regression] ICE in remove_useless_stmts_1, at tree-cfg.c:1882

[rguenth at gcc dot gnu dot org]

------- Comment #3 from rguenth at gcc dot gnu dot org  2008-08-01 11:15 -------
Confirmed.  Reduced testcase:

typedef float v4sf __attribute__ ((vector_size(16)));
typedef v4sf v4;
typedef union {
  v4sf v[4][4];
} m4v4;
void skew3(const v4 _v, m4v4 *dV2_dv)
{
  float *v = ((float *) &_v);
  if (dV2_dv)
    dV2_dv->v[1][0] = dV2_dv->v[0][1] = (v4){ v[1], v[0], 0., 0};
}


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
           Keywords|                            |ice-on-valid-code
      Known to fail|                            |4.3.1 4.4.0
      Known to work|                            |4.2.4
   Last reconfirmed|0000-00-00 00:00:00         |2008-08-01 11:15:10
               date|                            |
            Summary|internal compiler error: in |[4.3/4.4 Regression] ICE in
                   |remove_useless_stmts_1, at  |remove_useless_stmts_1, at
                   |tree-cfg.c:1882             |tree-cfg.c:1882
   Target Milestone|---                         |4.3.2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36991