AutomaticUbFusion

Description

Performs UB fusion on connected Elemwise operators that have not been involved in UB fusion. The fusion priority is the lowest.

Restrictions

• Only static shape networks are supported.
• A maximum of 28 Elemwise operators can be fused.
• Operators that have been matched by other UB fusion patterns cannot be involved in the fusion.
• The Relu6Grad operator cannot be involved in the fusion.
• The AddN operator with more than six inputs cannot be involved in the fusion.