[llvm] [NFC][LLVM][DSE] Extract large member functions out of class definition (PR #162320)

[Nikita Popov via llvm-commits]

nikic wrote:

Agree with @kazutakahirata. Also what you did here duplicates the doc comments in two places. And if you don't duplicate them, then you have to look for it in a different place.

https://github.com/llvm/llvm-project/pull/162320