[llvm] [DebugCounter] Add support for non-continous ranges. (PR #89470)

[Nicolai Hähnle via llvm-commits]

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@@ -1384,9 +1382,28 @@ So if executed on the following code:
 
 It would delete number ``%2`` and ``%3``.
 
-A utility is provided in `utils/bisect-skip-count` to binary search
-skip and count arguments. It can be used to automatically minimize the
-skip and count for a debug-counter variable.
+A utility is provided in `llvm/tools/delta-driver/delta-driver.cpp` to drive the automated delta debugging.
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nhaehnle wrote:

So I agree that it looks like your delta-driver supersedes the functionality of bisect-skip-count; I don't think we just want to delete the latter outright, since people may be used to using it, but please add a comment there that encourages people to use the more general / more powerful tool.

https://github.com/llvm/llvm-project/pull/89470