[Release/2.6] Fix batch norm vectorize path accuracy issue by enforcing shape alignment #1241
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When to implement a kernel for all shapes with vectorized LD/ST, we have to handle non-aligned head (base address) and short tail (tail < vector size). Before the commit, there was lack of head handling which leaded to non-vector-size-aligned vectorized ST.
The fixing enforces shapes for vectorize path. The vectorized kernel could be called only in the case in which feature dim could be divided by vector size.