[Mlir-commits] [mlir] [memref] Support non-scalar copies in `reinterpret_cast` elision (PR #203873)

[Andrzej Warzyński]

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banach-space wrote:

```suggestion
/// Supports ranked, static-shape, rank-preserving reinterpret_casts from
/// identity-layout sources. In addition:
///  * Non-scalar results must have static offsets, static result strides
///     identical to the source identity strides, and exactly one non-unit source
///     dimension collapsed to unit size 
/// Scalar-shaped results may have arbitrary result strides (i.e. for scalars, strides are effectively irrelevant).  
///
/// Returns nullopt for unsupported
/// reinterpret_casts.
```

https://github.com/llvm/llvm-project/pull/203873