[clang] [llvm] Add support for template as type parameter (PR #127654)

[David Blaikie via cfe-commits]

dwblaikie wrote:

> Could you please take a look at the attached DWARF and let me know your concerns with the implementation?

Sure - I see the effect, but I still think it's probably not worthwhile due to the limited capacity, inconsistency (due to that limited expressiveness) between direct uses of type parameters and situations where a template parameter is passed to another template, and missing consumer support (which I realize is a chicken-and-egg problem, and not always a deal breaker if there's valuable benefits to be had once consumers do support a given feature).

But perhaps other reviewers have different takes on it.

https://github.com/llvm/llvm-project/pull/127654