[llvm] [dyndbg][AsmPrinter] Add tail padding attributes (PR #194852)

[Eli Friedman via llvm-commits]

efriedma-quic wrote:

I'm a little worried your debugger people are going to come back at some point and say they can't actually reliably detect whether a function is on the stack.  For example, with hot-cold splitting, there's a non-obvious connection between the cold part and the hot part.  But I guess we can go with the simpler approach for now.

I'm fine with the current patch.

https://github.com/llvm/llvm-project/pull/194852