[Bug tree-optimization/50162] [4.5/4.6/4.7 Regression] Wrong vectorization

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50162

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |4.4.6

--- Comment #5 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-08-23 
08:57:37 UTC ---
4.4 works though.  Which has

          for (i = 0; i < nargs; i++)
            {
              op = gimple_call_arg (stmt, i);
              if (j == 0)
                {
                  vec_oprnd0
                    = vect_get_vec_def_for_operand (op, stmt, NULL);
                  vec_oprnd1
                    = vect_get_vec_def_for_stmt_copy (dt[nargs], vec_oprnd0);
                }
              else
                {
                  vec_oprnd0
                    = vect_get_vec_def_for_stmt_copy (dt[nargs], vec_oprnd1);
                  vec_oprnd1
                    = vect_get_vec_def_for_stmt_copy (dt[nargs], vec_oprnd0);
                }

instead.  Which surely doesn't work for nargs != 1 (?)