[llvm] [llvm-dwarfdump] Make --verify for .debug_names multithreaded. (PR #127281)

[Greg Clayton via llvm-commits]

https://github.com/clayborg commented:

Might be good to have to specify using multiple threads when verifying. So maybe opt into multi-threaded output to maintain deterministic output by default and allowing users to opt into non-deterministic output for speed? Something like
```
--verify-multithreaded
```
If this is specified, then we can take full advantage of the speed at the cost of non-deterministic output.


https://github.com/llvm/llvm-project/pull/127281