message: Remove the newline from the mlir-opt 'split-input-file' flag marker. This fixes support for DOS style new lines(/r/n).
diff: @@ -144,7 +144,7 @@ static OptResult processFile(std::unique_ptr<MemoryBuffer> ownedBuffer) {
  /// single test, but could be used for other purposes as well.
  static OptResult
  splitAndProcessFile(std::unique_ptr<MemoryBuffer> originalBuffer) {
  - const char marker[] = "// -----\n";
  + const char marker[] = "// -----";
  auto *origMemBuffer = originalBuffer.get();
  SmallVector<StringRef, 8> sourceBuffers;
  origMemBuffer->getBuffer().split(sourceBuffers, marker);
  