After #75103, `MLPrgramTransforms` depends on `BufferizationDialect`.
Also fix an unrelated compile error in `GreedyPatternRewriteDriver.cpp`.
(This was not failing on CI. I may be running an old compiler locally.)
There is currently no lowering out of `ml_program` in the LLVM
repository. This change adds a lowering to `memref` so that it can be
lowered all the way to LLVM. This lowering was taken from the [reference
backend in
torch-mlir](f416953600
).
I had tried implementing the `BufferizableOpInterface` for `ml_program`
instead of adding a new pass but that did not work because
`OneShotBufferize` does not visit module-level ops like
`ml_program.global`.
Added pass optimizes MLProgram global operations by reducing to only
the minimal load/store operations for global tensors. This avoids
unnecessary global operations throughout a program and potentially
improves operation gusion.
Reviewed By: jpienaar
Differential Revision: https://reviews.llvm.org/D159228
