fhahn added a comment.
Herald added a subscriber: foad.

Looks like this is causing an infinite loop in instcombine: 
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=34661

Reproducer test case: 
https://oss-fuzz.com/download?testcase_id=6383789942112256 , hangs with `opt 
-instcombine`, terminates with the patch reverted.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D101191/new/

https://reviews.llvm.org/D101191

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