message: [CMake] Use variables exported by SwiftConfig to compose LLDB variables.
  The SwiftConfig.cmake file exports variables that point to the swift
  binary and library directory. Use those instead of going through the
  LLVM_LIBRARY_OUTPUT_INTDIR indirection, which might be incorrect, for
  example for out-of-tree builds with the Xcode generator.
diff: @@ -29,8 +29,8 @@ set(LLDB_TEST_ARCH
  option(LLDB_TEST_SWIFT "Use in-tree swift when testing lldb" On)
  if(LLDB_TEST_SWIFT)
  - set(LLDB_SWIFTC ${LLVM_RUNTIME_OUTPUT_INTDIR}/swiftc CACHE STRING "Path to swift compiler")
  - set(LLDB_SWIFT_LIBS ${LLVM_LIBRARY_OUTPUT_INTDIR}/swift CACHE STRING "Path to swift libraries")
  + set(LLDB_SWIFTC ${SWIFT_BINARY_DIR}/bin/swiftc CACHE STRING "Path to swift compiler")
  + set(LLDB_SWIFT_LIBS ${SWIFT_LIBRARY_DIR}/swift CACHE STRING "Path to swift libraries")
  set(SWIFT_TEST_ARGS
  --swift-compiler ${LLDB_SWIFTC}
  --swift-library ${LLDB_SWIFT_LIBS}
  