def find_exprs(self, op=None):
        """
        Iterate over exprs of the given *op* in this block.
        """
        for inst in self.body:
            if isinstance(inst, Assign):
                expr = inst.value
                if isinstance(expr, Expr):
                    if op is None or expr.op == op:
                        yield expr

        Iterate over exprs of the given *op* in this block.
        
numba/core/ir.py