wren romano 1f58ae8066 [mlir][sparse] Making TensorExp::Kind a nested enum-class
This improves namespacing, and follows the pattern used for "Kind" enums elsewhere in MLIR.

Reviewed By: aartbik

Differential Revision: https://reviews.llvm.org/D146086
2023-03-20 16:12:31 -07:00
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