auto conv2d_output_type = mlir::cast<ShapedType>(conv2d_output.getType());

    //
    // Transpose and reshape the output
    //

    // Since output is in NWHC form we need to undo the permutation we have
    // affectively applied.
    auto output_permutation_and_shape = GetInversePermutationAndShape(
        output_permutation, conv2d_output_type, rewriter);

//	m.preemptoff = "reason"
//	var stw worldStop
//	systemstack(func() {
//		stw = stopTheWorldWithSema(reason)
//	})
//
// When finished, the caller must either call startTheWorld or undo
// these three operations separately:
//
//	m.preemptoff = ""
//	systemstack(func() {
//		now = startTheWorldWithSema(stw)
//	})
//	semrelease(&worldsema)
//

	if v.kind() != Map {
		v.panicNotMap()
	}
	return &MapIter{m: v}
}

// Force slow panicking path not inlined, so it won't add to the
// inlining budget of the caller.
// TODO: undo when the inliner is no longer bottom-up only.
//
//go:noinline
func (f flag) panicNotMap() {
	f.mustBe(Map)
}

// copyVal returns a Value containing the map key or value at ptr,