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Merge pull request #36788 from varungandhi-apple/vg-note-LIT_FILTER

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[docs] Note LIT_FILTER in Testing.md.
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Varun Gandhi
2021-04-07 08:51:58 -07:00
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@@ -124,7 +124,9 @@ out with ``lit.py -h``. We document some of the more useful ones below:
line, amid a sequence.
* ``-a`` causes a test's commandline and output to always be printed.
* ``--filter=<pattern>`` causes only tests with paths matching the given regular
expression to be run.
expression to be run. Alternately, you can use the `LIT_FILTER='<pattern>'`
environment variable, in case you're invoking `lit.py` through some other
tool such as `build-script`.
* ``-i`` causes tests that have a newer modification date and failing tests to
be run first. This is implemented by updating the mtimes of the tests.
* ``--no-execute`` causes a dry run to be performed. *NOTE* This means that all