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# pylint: disable=unused-argument, not-context-manager
"""Utils functions for optimizations"""

import tvm


def _run_opt_pass(expr, opt_pass):
    """Helper function to run pass

    Parameters
    ----------
    expr : relay.Expr
        Expr will be optimized
    opt_pass : relay.Pass
        Optimization pass

    Returns
    -------
    ret: relay.Expr
        Optimized Expr by running opt_pass
    """
    assert isinstance(opt_pass, tvm.transform.Pass)
    mod = tvm.IRModule.from_expr(expr)
    mod = opt_pass(mod)
    return mod["main"]
