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

[Jakub Kuderski via llvm-commits]

kuhar wrote:

> Sure:
> 
> https://en.cppreference.com/w/cpp/ranges/from_range
> 
> `std::from_range` clearly indicates that the immediately following argument is a range and makes sure that the correct constructor is picked.

IMO this should be a part of the PR description.

> I don't think we should use or support C++ ranges in LLVM.

+1, I'm more interested in learning what concrete problems this solves and if we can benefit from it without buying into the whole ecosystem of ranges from C++23.


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