One blocking issue for dynamic NMS is that it needs to use dynamic strided_slice. However, current fusion pass can't handle dynamic shape well yet. As a result, we can't fuse dynamic strided_slice and have to temporarily mark strided_slice as Opaque. However, this will result in other normal static strided_slice not fused and cause performance issue. Maybe we need to directly handle fusion for dynamic shape. @masahi do you have any idea on how to improve this?
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