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Louis Dionne 6766b6d75d [lit] Add the ability to parse regexes in Lit boolean expressions This patch augments Lit with the ability to parse regular expressions in boolean expressions. This includes REQUIRES:, XFAIL:, UNSUPPORTED:, and all other special Lit markup that evaluates to a boolean expression. Regular expressions can be specified by enclosing them in {{...}}, similarly to how FileCheck handles such regular expressions. The regular expression can either be on its own, or it can be part of an identifier. For example, a match expression like {{.+}}-apple-darwin{{.+}} would match the following variables: x86_64-apple-darwin20.0 arm64-apple-darwin20.0 arm64-apple-darwin22.0 etc... In the long term, this could be used to remove the need to handle the target triple specially when parsing boolean expressions. Differential Revision: https://reviews.llvm.org/D104572		2021-06-30 10:52:16 -04:00
..
examples
lit	[lit] Add the ability to parse regexes in Lit boolean expressions	2021-06-30 10:52:16 -04:00
tests	[lit] Add the ability to parse regexes in Lit boolean expressions	2021-06-30 10:52:16 -04:00
utils
CMakeLists.txt
LICENSE.TXT	[lit] Ship and bundle license for lit package	2020-10-30 15:34:00 +01:00
lit.py	[lit] Update lit.py shebang for Python3	2021-01-25 17:29:57 -08:00
MANIFEST.in
README.txt
setup.py	[Branch-Rename] Fix some links	2021-02-01 16:43:21 +05:30

README.txt

===============================
 lit - A Software Testing Tool
===============================

lit is a portable tool for executing LLVM and Clang style test suites,
summarizing their results, and providing indication of failures. lit is designed
to be a lightweight testing tool with as simple a user interface as possible.

=====================
 Contributing to lit
=====================

Please browse the Test Suite > lit category in LLVM's Bugzilla for ideas on
what to work on.

Before submitting patches, run the test suite to ensure nothing has regressed:

    # From within your LLVM source directory.
    utils/lit/lit.py \
        --path /path/to/your/llvm/build/bin \
        utils/lit/tests

Note that lit's tests depend on 'not' and 'FileCheck', LLVM utilities.
You will need to have built LLVM tools in order to run lit's test suite
successfully.

You'll also want to confirm that lit continues to work when testing LLVM.
Follow the instructions in http://llvm.org/docs/TestingGuide.html to run the
regression test suite:

    make check-llvm

And be sure to run the llvm-lit wrapper script as well:

    /path/to/your/llvm/build/bin/llvm-lit utils/lit/tests

Finally, make sure lit works when installed via setuptools:

    python utils/lit/setup.py install
    lit --path /path/to/your/llvm/build/bin utils/lit/tests