message: [lldb] Silence unhandled enums warning.
  The warning was introduced by r346392, which introduces new builtin
  types (to support cl_intel_device_side_avc_motion_estimation OpenCL
  extension).
  Note that this patch only inserts empty cases to silence the warning and
  unblock our integrate, does not aim to add support for the new types in
  lldb.
diff: @@ -5113,6 +5113,20 @@ lldb::Encoding ClangASTContext::GetEncoding(lldb::opaque_compiler_type_t type,
  case clang::BuiltinType::Kind::PseudoObject:
  case clang::BuiltinType::Kind::UnknownAny:
  break;
  +
  + case clang::BuiltinType::OCLIntelSubgroupAVCMcePayload:
  + case clang::BuiltinType::OCLIntelSubgroupAVCImePayload:
  + case clang::BuiltinType::OCLIntelSubgroupAVCRefPayload:
  + case clang::BuiltinType::OCLIntelSubgroupAVCSicPayload:
  + case clang::BuiltinType::OCLIntelSubgroupAVCMceResult:
  + case clang::BuiltinType::OCLIntelSubgroupAVCImeResult:
  + case clang::BuiltinType::OCLIntelSubgroupAVCRefResult:
  + case clang::BuiltinType::OCLIntelSubgroupAVCSicResult:
  + case clang::BuiltinType::OCLIntelSubgroupAVCImeResultSingleRefStreamout:
  + case clang::BuiltinType::OCLIntelSubgroupAVCImeResultDualRefStreamout:
  + case clang::BuiltinType::OCLIntelSubgroupAVCImeSingleRefStreamin:
  + case clang::BuiltinType::OCLIntelSubgroupAVCImeDualRefStreamin:
  + break;
  }
  break;
  // All pointer types are represented as unsigned integer encodings. We may
  