[PATCH] D122251: [lit] Use sharding for GoogleTest format

[Yuanfang Chen via Phabricator via llvm-commits]

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This helps lit unit test performance by a lot, especially on windows.

The shards are executed by the test runner and the results are stored in the
json format supported by the GoogleTest. Later in the test reporting stage,
all test results in the json file are retrieved to continue the test results
summary etc.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D122251

Files:
  llvm/unittests/Support/CrashRecoveryTest.cpp
  llvm/unittests/Support/ProgramTest.cpp
  llvm/utils/lit/lit/Test.py
  llvm/utils/lit/lit/TestingConfig.py
  llvm/utils/lit/lit/formats/googletest.py
  llvm/utils/lit/lit/main.py
  llvm/utils/lit/tests/Inputs/googletest-format/DummySubDir/OneTest.py
  llvm/utils/lit/tests/Inputs/googletest-upstream-format/DummySubDir/OneTest.py
  llvm/utils/lit/tests/Inputs/googletest-upstream-format/lit.cfg
  llvm/utils/lit/tests/googletest-format.py
  llvm/utils/lit/tests/googletest-upstream-format.py

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