llvm-project

History

[llvm][lit] Handle case when there is no llvm default target triple (#76934 )

This can happen when you do not choose a specific target triple, and do
not enable the host architecture when building (if you do enable it, it
would become the default target). Such as only enabling RISC-V, when
building on an AArch64 machine.

Originally reported
https://discourse.llvm.org/t/llvm-test-error-could-not-turn-into-itanium-abi-triple/76013.

When attempting to run a single test via lit you get: `Could not turn ''
into Itanium ABI triple`

Setting a default triple with `LLVM_DEFAULT_TARGET_TRIPLE` works around
the issue.

This change copies the existing host triple check to target triple, and
adds a note to highlight the potential issue. As `check-clang` on my
AArch64 machine failed 32% of tests in this configuration.

Which is to be expected and is ok if you only want to run specific
tests, but for anyone unintentionally building this way the note is a
clue to the cause.

2024-01-05 08:55:14 +00:00

examples

[lit] Add a method to lit.TestFormat to get the list of tests associated to a path

2023-06-27 16:27:08 -04:00

lit

[llvm][lit] Handle case when there is no llvm default target triple (#76934 )

2024-01-05 08:55:14 +00:00

tests

[test] Fix expected line number in TestRunner.py (#73996 )

2023-11-30 15:06:24 -08:00

utils

…

CMakeLists.txt

…

LICENSE.TXT

…

lit.py

[NFC][Py Reformat] Reformat python files in llvm

2023-05-17 10:48:52 +02:00

MANIFEST.in

…

pyproject.toml

[lit] Add pyproject.toml and fix build w/ modern setuptools backend

2022-11-01 07:30:14 +01:00

README.rst

lit: Fix formatting in README.rst

2023-03-15 04:19:34 -07:00

setup.py

[NFC][Py Reformat] Reformat python files in llvm

2023-05-17 10:48:52 +02:00

README.rst

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

About
=====

*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.


Features
========

 * Portable!
 * Flexible test discovery.
 * Parallel test execution.
 * Support for multiple test formats and test suite designs.


Documentation
=============

The official *lit* documentation is in the man page, available online at the LLVM
Command Guide: http://llvm.org/cmds/lit.html.


Source
======

The *lit* source is available as part of LLVM, in the LLVM source repository:
https://github.com/llvm/llvm-project/tree/main/llvm/utils/lit


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

Please browse the issues labeled *tools:llvm-lit* in LLVM's issue tracker for
ideas on what to work on:
https://github.com/llvm/llvm-project/labels/tools%3Allvm-lit

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