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70 lines
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===============================
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lit - A Software Testing Tool
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===============================
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About
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=====
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*lit* is a portable tool for executing LLVM and Clang style test suites,
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summarizing their results, and providing indication of failures. *lit* is
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designed to be a lightweight testing tool with as simple a user interface as
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possible.
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Features
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========
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* Portable!
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* Flexible test discovery.
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* Parallel test execution.
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* Support for multiple test formats and test suite designs.
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Documentation
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=============
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The official *lit* documentation is in the man page, available online at the LLVM
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Command Guide: http://llvm.org/cmds/lit.html.
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Source
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======
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The *lit* source is available as part of LLVM, in the LLVM source repository:
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https://github.com/llvm/llvm-project/tree/main/llvm/utils/lit
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Contributing to lit
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===================
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Please browse the issues labeled *tools:llvm-lit* in LLVM's issue tracker for
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ideas on what to work on:
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https://github.com/llvm/llvm-project/labels/tools%3Allvm-lit
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Before submitting patches, run the test suite to ensure nothing has regressed::
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# From within your LLVM source directory.
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utils/lit/lit.py \
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--path /path/to/your/llvm/build/bin \
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utils/lit/tests
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Note that lit's tests depend on ``not`` and ``FileCheck``, LLVM utilities.
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You will need to have built LLVM tools in order to run lit's test suite
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successfully.
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You'll also want to confirm that lit continues to work when testing LLVM.
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Follow the instructions in http://llvm.org/docs/TestingGuide.html to run the
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regression test suite:
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make check-llvm
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And be sure to run the llvm-lit wrapper script as well:
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/path/to/your/llvm/build/bin/llvm-lit utils/lit/tests
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Finally, make sure lit works when installed via setuptools:
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python utils/lit/setup.py install
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lit --path /path/to/your/llvm/build/bin utils/lit/tests
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