def _combine_to_new_block(self, block, pending_transforms):
        """Combine the new instructions from previous pass into a new block
        body.
        """
        new_body = []
        for inst, pre, post in pending_transforms:
            for instr in pre:
                new_body.append(instr)
            new_body.append(inst)
            for instr in post:
                new_body.append(instr)
        block.body = new_body
Combine the new instructions from previous pass into a new block
        body.
        
numba/parfors/array_analysis.py