Aart Bik 8af0ccf5a4 [sparse][mlir] give all sparse kernels an explicit "output" tensor ...

Rationale:
Providing an output tensor, even if one is not used as input to
the kernel provides the right pattern for using lingalg sparse
kernels (in contrast with reusing a tensor just to provide the shape).
This prepares proper bufferization that will follow.

Reviewed By: bixia

Differential Revision: https://reviews.llvm.org/D95587

2021-01-28 10:41:17 -08:00

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