[all-commits] [llvm/llvm-project] 81bc7c: [OpenMP][NFC] lit: Allow setting default environme...

[Joachim via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 81bc7cf609c09374a62793d74fa33709828377b6
      https://github.com/llvm/llvm-project/commit/81bc7cf609c09374a62793d74fa33709828377b6
  Author: Joachim Jenke <jenke at itc.rwth-aachen.de>
  Date:   2023-07-11 (Tue, 11 Jul 2023)

  Changed paths:
    M openmp/README.rst
    M openmp/libomptarget/test/lit.cfg
    M openmp/runtime/test/lit.cfg
    M openmp/tools/archer/tests/lit.cfg
    M openmp/tools/multiplex/tests/lit.cfg

  Log Message:
  -----------
  [OpenMP][NFC] lit: Allow setting default environment variables for test

Add CHECK_OPENMP_ENV environment variable which will be passed to environment
variables for test (make check-* target). This provides a handy way to
exercise various openmp code with different settings during development.

For example, to change default barrier pattern:
```
$ env CHECK_OPENMP_ENV="KMP_FORKJOIN_BARRIER_PATTERN=hier,hier \
KMP_PLAIN_BARRIER_PATTERN=hier,hier \
KMP_REDUCTION_BARRIER_PATTERN=hier,hier" \
ninja check-openmp
```

Even with this, each test can set appropriate environment variables if needed
as before.

Also, this commit adds missing documention about how to run tests in README.

Patch provided by t-msn

Differential Revision: https://reviews.llvm.org/D122645