[PATCH] D78202: [FileCheck] - Refactor the code related to string arrays. NFCI.

[George Rimar via Phabricator via llvm-commits]

grimar created this revision.
grimar added reviewers: jdenny, thopre, probinson, jhenderson, MaskRay.
Herald added subscribers: hiraditya, arichardson.

I've noticed that here are
few `std::vector<std::string>` members in `FileCheckRequest`,
though there is no reason not to use `StringRef` it seems.

This patch changes these arrays to `std::vector<StringRef>`
and refactors the code in callers to cleanup/improve/simplify
how it works with these arrays.


https://reviews.llvm.org/D78202

Files:
  llvm/include/llvm/Support/FileCheck.h
  llvm/lib/Support/FileCheck.cpp
  llvm/lib/Support/FileCheckImpl.h
  llvm/unittests/Support/FileCheckTest.cpp
  llvm/utils/FileCheck/FileCheck.cpp

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