[clang] [llvm] [llvm][DebugInfo][clang] Finalize all declaration subprograms in DIBuilder::finalize() (PR #139914)

[Jeremy Morse via llvm-commits]

jmorse wrote:

> Performance cost in terms of compilation time?

Compilation time indeed -- there's a small chance that we unexpectedly start producing masses of useless type information, which would mean we'd have to rethink this. It'll show up on https://llvm-compile-time-tracker.com/ pretty rapidly if there's a problem.

https://github.com/llvm/llvm-project/pull/139914