185ce8cdfc
Provide an option to specify optimization level when creating an ExecutionEngine via the MLIR JIT Python binding. Not only is the specified optimization level used for code generation, but all LLVM optimization passes at the optimization level are also run prior to machine code generation (akin to the mlir-cpu-runner tool). Default opt level continues to remain at level two (-O2). Contributions in part from Prashant Kumar <prashantk@polymagelabs.com> as well. Differential Revision: https://reviews.llvm.org/D102551