[llvm] [ADT] Add DenseSet(llvm::from_t, Range) (PR #131832)

[David Blaikie via llvm-commits]

dwblaikie wrote:

Might be worth showing, in the test case, where the disambiguation is useful? I guess the relevant issues arise when using CTAD? Or something else?

https://github.com/llvm/llvm-project/pull/131832