Bixia Zheng 64e171c2d0 Avoid unnecessary output buffer allocation and initialization.
The sparse tensor code generator allocates memory for the output tensor. As
such, we only need to allocate a MemRefDescriptor to receive the output tensor
and do not need to allocate and initialize the storage for the tensor.

Reviewed By: aartbik

Differential Revision: https://reviews.llvm.org/D115292
2021-12-09 08:29:02 -08:00
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