-void set_op_pinned(ir_op *op, op_pinned pinned);
-
-/** Returns true if op is one of Start, End, Jmp, Cond, Return, Raise or Bad. */
-int is_cfopcode(ir_op *op);
-
-/** Returns true if the operation manipulates interprocedural control flow:
- CallBegin, EndReg, EndExcept */
-int is_ip_cfopcode(ir_op *op);