[PATCH] D112197: [msan] Don't use TLS slots of noundef args

[Vitaly Buka via Phabricator via llvm-commits]

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Transformations may strip the attribute from the
argument, e.g. for unused, which will result in
shadow offsets mismatch between caller and
callee.

Stripping noundef for used arguments can be
a problem, as TLS is not going to be set
by caller. However this is not the goal of the
patch and I am not aware if that's even
possible.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D112197

Files:
  llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp
  llvm/test/Instrumentation/MemorySanitizer/msan_eager.ll

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