[llvm] [DebugInfo] getMergedLocation: match scopes based on their location (PR #132286)

[David Blaikie via llvm-commits]

dwblaikie wrote:

Thanks, this is helping.

The chains are still a bit confusing to me in the example - perhaps use specific instructions, and their scope chain? (some instruction should have a single scope link, which continues up until it reaches the function - so I don't quite understand the function with up and down arrows, and sideways arrows)

Should be two instructions, each with linear scope chains that reach the function - could you describe those, and how the merging currently works (the steps, and how it reaches the (undesirable to you) outcome)? and how the new algorithm reaches a different conclusion?

https://github.com/llvm/llvm-project/pull/132286