llvm-project

e2a88553 - Revert "[clang] Remove intrusive reference count from `DiagnosticOptions` (#139584)"

Revert "[clang] Remove intrusive reference count from `DiagnosticOptions` (#139584)" This reverts commit 9e306ad4600c4d3392c194a8be88919ee758425c. Multiple builtbot failures have been reported: https://github.com/llvm/llvm-project/pull/139584