https://github.com/llvm/llvm-project/commit/e4a1b5f36e71c8c382bdd531867c5f6eb3f7deac landed upstream and the patch did not implement the change in the bytecode interpreter.

To make matters worse, the added test case test/SemaCXX/labeled-break-continue-constexpr.cpp causes an infinite loop in the bytecode interpreter, making it impossible to run it.