Jacques Pienaar aee622fa20 [mlir] Enable passing crash reproducer stream factory method
Add factory to create streams for logging the reproducer. Allows for more general logging (beyond file) and logging the configuration/module separately (logged in order, configuration before module).

Also enable querying filename of ToolOutputFile.

Differential Revision: https://reviews.llvm.org/D94868
2021-01-21 20:03:15 -08:00
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