rand_const
tree frame_addr, rand_const, tmp, fndecl, udi_frame_addr;
rand_const = build_int_cstu(long_unsigned_type_node, rand_cst);
assign = create_assign(op, local_entropy, local_entropy, rand_const);
u64 x = rand_const(t), y = rand_const(t);
t = rand_const(init_t);