[lldb] [llvm] [NFC][DebugInfo] Make some block-start-position methods return iterators (PR #124287)

[Jeremy Morse via llvm-commits]

jmorse wrote:

Ooooff, yeah we missed that. I think (90% confident) that overloading the relevant DIBuilder methods with iterator-taking versions should work fine, and we should be able to pick that into llvm20 before rc1, we'll look at it momentarily.

(In theory downstream compatibility isn't a strong LLVM concern (?), but I think it'd be easy to support and ease transitions).

https://github.com/llvm/llvm-project/pull/124287