Method insert_op_before

ppq/IR/base/graph.py:416–439

Insert an op just before given op. This function will insert given op A to variable B.inputs[input_idx] Args: A (Operation): Inserting Op, should has no input and output variable that links to it. B (Operation): before this op. input_idx

(self, A: Operation, B: Operation, input_idx: int = 0)

        raise Exception('This Function is removed from PPQ Since 0.6.6')

    def insert_op_before(self, A: Operation, B: Operation, input_idx: int = 0):
        """
        Insert an op just before given op.
        This function will insert given op A to variable B.inputs[input_idx]

        Args:
            A (Operation): Inserting Op, should has no input and output variable that links to it.
            B (Operation): before this op.
            input_idx (int, optional): For case that B has more than 1 input variable, 
                user should use parameter input_idx to identify which variable is used.
        """
        if input_idx >= B.num_of_input:
            raise ValueError('Input index out of range.')
        if A.num_of_input != 0 or A.num_of_output != 0:
            raise ValueError('Can only insert op that has no input and output variable.')
        var = B.inputs[input_idx]
        
        var.dest_ops[var.dest_ops.index(B)] = A
        B.inputs[input_idx] = self.create_variable()
        B.inputs[input_idx].source_op = A
        B.inputs[input_idx].dest_ops.append(B)
    
        A.inputs.append(var)
        A.outputs.append(B.inputs[input_idx])

    def insert_op_after(self, A: Operation, B: Operation, output_idx: int = 0):
        """