Mehdi Amini b299ec1666 Expose callbacks for encoding of types/attributes ...

[mlir] Expose a mechanism to provide a callback for encoding types and attributes in MLIR bytecode.

Two callbacks are exposed, respectively, to the BytecodeWriterConfig and to the ParserConfig. At bytecode parsing/printing, clients have the ability to specify a callback to be used to optionally read/write the encoding. On failure, fallback path will execute the default parsers and printers for the dialect.

Testing shows how to leverage this functionality to support back-deployment and backward-compatibility usecases when roundtripping to bytecode a client dialect with type/attributes dependencies on upstream.

Reviewed By: rriddle

Differential Revision: https://reviews.llvm.org/D153383

2023-07-28 10:44:02 -07:00

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