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41 lines
1.7 KiB
Markdown
41 lines
1.7 KiB
Markdown
# Standalone Transform Dialect Interpreter
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This is an example of using the Transform dialect interpreter functionality standalone, that is, outside of the regular pass pipeline. The example is a
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binary capable of processing MLIR source files similar to `mlir-opt` and other
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optimizer drivers, with the entire transformation process driven by a Transform
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dialect script. This script can be embedded into the source file or provided in
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a separate MLIR source file.
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Either the input module or the transform module must contain a top-level symbol
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named `__transform_main`, which is used as the entry point to the transformation
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script.
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```sh
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mlir-transform-opt payload_with_embedded_transform.mlir
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mlir-transform-opt payload.mlir -transform=transform.mlir
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```
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The name of the entry point can be overridden using command-line options.
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```sh
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mlir-transform-opt payload-mlir -transform-entry-point=another_entry_point
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```
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Transform scripts can reference symbols defined in other source files, called
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libraries, which can be supplied to the binary through command-line options.
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Libraries will be embedded into the main transformation module by the tool and
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the interpreter will process everything as a single module. A debug option is
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available to see the contents of the transform module before it goes into the interpreter.
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```sh
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mlir-transform-opt payload.mlir -transform=transform.mlir \
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-transform-library=external_definitions_1.mlir \
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-transform-library=external_definitions_2.mlir \
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-dump-library-module
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```
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Check out the [Transform dialect
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tutorial](https://mlir.llvm.org/docs/Tutorials/transform/) as well as
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[documentation](https://mlir.llvm.org/docs/Dialects/Transform/) to learn more
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about the dialect.
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