[llvm] [DebugInfo] Add num_extra_inhabitants to debug info (PR #112590)

[Paul T Robinson via llvm-commits]

https://github.com/pogo59 commented:

A count of invalid bit patterns doesn't seem that helpful to the debugger. What would it do with this information? How would it know what the actual invalid bit patterns are? For example, an enum with two enumerators with values equal to 0 and 5 would have exactly the same number of "extra inhabitants" as bool.

https://github.com/llvm/llvm-project/pull/112590