[PATCH] D64589: [UpdateLLCTestChecks] Emit warning when invalid value for -check-prefix option

[Roman Lebedev via Phabricator via llvm-commits]

lebedev.ri added a comment.

Thank you, i have stumbled into this a few times :)

To be noted, the problem is: `--check-prefix=A,B,C`.
But i'm not sure about `--check-prefix=A --check-prefix=B --check-prefix=C`.


Repository:
  rL LLVM

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  https://reviews.llvm.org/D64589/new/

https://reviews.llvm.org/D64589