Han-Chung Wang 2472c45ba3 [mlir][tensor] Enhance pack/unpack simplification for identity outer_dims_perm cases. (#77409) ...

They can be simplified to reshape ops if outer_dims_perm is an identity
permutation. The revision adds a `isIdentityPermutation` method to
IndexingUtils.

2024-01-10 08:30:34 -08:00

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