[llvm] IR, CodeGen: Add command line flags for dumping instruction addresses and debug locations. (PR #127944)

[Reid Kleckner via llvm-commits]

https://github.com/rnk approved this pull request.

Looks good. I came to say "sorry I don't have time", but I think this is pretty straightforward.

https://github.com/llvm/llvm-project/pull/127944