[PATCH] D130253: [Lit] Pass through DFLTCC from the surrounding environment

[Ilya Leoshkevich via Phabricator via llvm-commits]

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Many distros ship zlib with the IBM Z deflate hardware acceleration
patch [1]. Sometimes it's desirable to disable the acceleration, for
example, for reproducibility. This can be done by exporting DFLTCC=0.
llvm-lit clears this environment variable, which causes
compress-debug-sections-zlib.test fail on z15 and later machines. Add
DFLTCC to the list of variables to keep.

[1] https://github.com/madler/zlib/pull/410


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D130253

Files:
  llvm/utils/lit/lit/TestingConfig.py


Index: llvm/utils/lit/lit/TestingConfig.py
===================================================================
--- llvm/utils/lit/lit/TestingConfig.py
+++ llvm/utils/lit/lit/TestingConfig.py
@@ -58,6 +58,7 @@
             'WindowsSDKLibVersion',
             'SOURCE_DATE_EPOCH',
             'GTEST_FILTER',
+            'DFLTCC',
         ]
 
         if sys.platform == 'win32':


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