Previously, UnrollMultiReductionPattern bailed out when all the dimensions were reduced to a scalar. This PR adds support for this case by tiling the source vector and chaining partial reductions through the accumulator operand.
Previously, UnrollMultiReductionPattern bailed out when all the dimensions were reduced to a scalar. This PR adds support for this case by tiling the source vector and chaining partial reductions through the accumulator operand.