Lit To Bazel

Lit To Bazel

Overview

This skill guides the agent in using the lit_to_bazel tool to convert MLIR

test files to executable commands.

Usage

Converting a Test File

To convert a lit test file to a bazel run command, use the following command

recipes:

bazel run //third_party/heir/scripts:lit_to_bazel -- {test_file_path}

Replace {test_file_path} with the absolute path to the test file. The absolute

path is necessary because the bazel run command runs relative to its runfiles

directory, and so a relative path will not be relative to the VCS root of the

project.

Gotchas

• Absolute Paths: The tool replaces %s in RUN lines with the absolute path

of the test file to ensure it works in the sandbox.

• Piped RUN commands: The tool supports piped RUN lines, such as piping

heir-opt into heir-translate.

• Complex RUN commands: Some very complex RUN lines are not supported, such

as lit test files with multiple RUN lines that interact via writing to and

reading from temporary files. When encountering situations like this, you

should stop and warn the user.

• Non-lit tests: Some test targets are not lit tests, and these do not need

the lit_to_bazel tool.

Copy this checklist and track progress:

- [ ] Step 1: Identify the test file to convert.
- [ ] Step 2: Run the `lit_to_bazel` tool on the file.
- [ ] Step 3: Inspect the generated command or run it.
- [ ] Step 4: Verify execution results.

<!-- mdformat global-off -->