Angel Zhang f83950ab8d [mlir][spirv] Implement vector unrolling for convert-to-spirv pass (#100138) ...

### Description
This PR builds on #99872. It implements a minimal version of function
body vector unrolling to convert vector types into 1D and with a size
supported by SPIR-V (2, 3 or 4 depending on the original dimension). The
ops that are currently supported include those with elementwise traits
(e.g. `arith.addi`), `vector.reduction` and `vector.transpose`. This PR
also includes new LIT tests that only check for vector unrolling.

### Future Plans
- Support more ops

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Co-authored-by: Jakub Kuderski <kubakuderski@gmail.com>

2024-07-24 10:41:19 -04:00

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