isl_tab.c: push_union: handle NULL input

[isl.git] / test_inputs / codegen / omega / code_gen-0.in

{ s1[In_1, In_2] -> [In_1, In_2] : In_1 >= 2 and In_1 <= 6 and In_2 >= 0 and In_2 <= 4; s0[In_1, In_2] -> [In_1, In_2] : In_1 >= 1 and In_2 >= -1 + In_1 and In_2 <= 7 }
{  :  }
{ [i0, i1] -> atomic[o0] : o0 <= 1; [i0, i1] -> separate[o0] : o0 >= 2 }