[clang] [llvm] demangle function names in trace files (PR #87626)

[Jamie Schmeiser via cfe-commits]

jamieschmeiser wrote:

Yes, the way to proceed is to rebase and resolve the conflicts.  As far as the formatting changes, I think you should go with what the formatter wants.  Everyone has different opinions about things like spacing, line length, etc and will never agree.  The formatter keeps things consistent, which I think everyone will agree is good.

https://github.com/llvm/llvm-project/pull/87626