[llvm] 0d89963 - [Lit] Pass through DFLTCC from the surrounding environment

[Ilya Leoshkevich via llvm-commits]

Author: Ilya Leoshkevich
Date: 2022-07-23T01:38:30+02:00
New Revision: 0d89963df354ee309c15f67dc47c8ab3cb5d0fb2

URL: https://github.com/llvm/llvm-project/commit/0d89963df354ee309c15f67dc47c8ab3cb5d0fb2
DIFF: https://github.com/llvm/llvm-project/commit/0d89963df354ee309c15f67dc47c8ab3cb5d0fb2.diff

LOG: [Lit] Pass through DFLTCC from the surrounding environment

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

Reviewed By: abrachet

Differential Revision: https://reviews.llvm.org/D130253

Added: 
    

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

Removed: 
    


################################################################################
diff  --git a/llvm/utils/lit/lit/TestingConfig.py b/llvm/utils/lit/lit/TestingConfig.py
index bdb87c376127c..55e2a764d8fa6 100644
--- a/llvm/utils/lit/lit/TestingConfig.py
+++ b/llvm/utils/lit/lit/TestingConfig.py
@@ -58,6 +58,7 @@ def fromdefaults(litConfig):
             'WindowsSDKLibVersion',
             'SOURCE_DATE_EPOCH',
             'GTEST_FILTER',
+            'DFLTCC',
         ]
 
         if sys.platform == 'win32':