[PATCH] D89279: Support: Add operator== for MemoryBufferRef and split out MemoryBufferRef.h

[Duncan P. N. Exon Smith via Phabricator via llvm-commits]

dexonsmith created this revision.
dexonsmith added reviewers: arphaman, Bigcheese.
Herald added subscribers: ributzka, hiraditya, mgorny.
Herald added a project: LLVM.
dexonsmith requested review of this revision.

As preparation for changing `LineIterator` to work with `MemoryBufferRef`:

- Add an `operator==` that uses buffer pointer identity to ensure two buffers are equivalent.
- Split out `MemoryBufferRef.h`, to avoid polluting `LineIterator.h` includers with everything from `MemoryBuffer.h`. This also means moving the `MemoryBuffer` constructor to a source file.


https://reviews.llvm.org/D89279

Files:
  llvm/include/llvm/Support/MemoryBuffer.h
  llvm/include/llvm/Support/MemoryBufferRef.h
  llvm/lib/Support/CMakeLists.txt
  llvm/lib/Support/MemoryBufferRef.cpp
  llvm/unittests/Support/CMakeLists.txt
  llvm/unittests/Support/MemoryBufferRefTest.cpp
  llvm/unittests/Support/MemoryBufferTest.cpp

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