George Karpenkov 4571da68d1 [FileCheck] Provide an option for FileCheck to dump original input to stderr on failure
The option can be either set using environment variable (e.g. env
FILECHECK_DUMP_INPUT_ON_FAILURE=1 ninja check-fuzzer) or with a
FileCheck flag.

This can be extremely useful for debugging, cf.
https://groups.google.com/forum/#!topic/llvm-dev/kLrzg8OM_h8 for
discussion.

Differential Revision: https://reviews.llvm.org/D49328

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@337609 91177308-0d34-0410-b5e6-96231b3b80d8
2018-07-20 20:21:57 +00:00
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