320    def _set_var_bit_class(self, var_id, bit_class):  argument
321       assert bit_class != 0
324          self._var_classes[var_id] = bit_class
327          assert canon_class < 0 or canon_class == bit_class
328          var_class = self._class_relation.add_equiv(var_class, bit_class)
364    def _propagate_bit_class_down(self, val, bit_class):  argument
366          assert val.bit_size == 0 or val.bit_size == bit_class
369          assert val.bit_size == 0 or val.bit_size == bit_class
370          self._set_var_bit_class(val.index, bit_class)
376             assert bit_class == 0 or bit_class == dst_type_bits
378             assert val.common_size == 0 or val.common_size == bit_class
379             val.common_size = bit_class
437    def _validate_bit_class_down(self, val, bit_class):  argument
440       assert bit_class != 0
443          assert val.bit_size == 0 or val.bit_size == bit_class
446          assert val.bit_size == 0 or val.bit_size == bit_class
452             assert bit_class == dst_type_bits
454             assert val.common_class == 0 or val.common_class == bit_class
455             val.common_class = bit_class