[PATCH] D79266: [mlir] Add a new context flag for disabling/enabling multi-threading

[River Riddle via Phabricator via llvm-commits]

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This is useful for several reasons:

- In some situations the user can guarantee that thread-safety isn't necessary and don't want to pay the cost of synchronization, e.g., when parsing a very large module.

- For things like logging threading is not desirable as the output is not guaranteed to be in stable order.

This flag also subsumes the pass manager flag for multi-threading.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D79266

Files:
  mlir/docs/PassManagement.md
  mlir/include/mlir/IR/MLIRContext.h
  mlir/include/mlir/Pass/PassManager.h
  mlir/include/mlir/Support/StorageUniquer.h
  mlir/lib/IR/MLIRContext.cpp
  mlir/lib/Pass/IRPrinting.cpp
  mlir/lib/Pass/Pass.cpp
  mlir/lib/Pass/PassManagerOptions.cpp
  mlir/lib/Support/StorageUniquer.cpp
  mlir/lib/Transforms/Inliner.cpp
  mlir/test/Dialect/SPIRV/availability.mlir
  mlir/test/Dialect/SPIRV/target-env.mlir
  mlir/test/IR/test-matchers.mlir
  mlir/test/Pass/ir-printing.mlir
  mlir/test/Pass/pass-timing.mlir

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