[clang] [BoundsSafety] Support bounds-safety attributes in type positions (PR #179612)

[Hans Wennborg via cfe-commits]

https://github.com/zmodem commented:

It's great to see the AST -> Sema dependency removed.

I'm still concerned about the move of LateParsedDeclaration and LateParsedAttribute from Parser to Sema. Those classes seem very parsing specific. 

And scrolling down, I see that their implementations are still in Parser. That doesn't seem right -- I don't think we can define LateParsedDeclaration in Sema/DeclSpec.h and implement it in Parse/ParseCXXInlineMethods.cpp.

Maybe the parsing and the sema parts can be split apart somehow. How do the parser and sema collaborate around regular ParsedAttr objects?

https://github.com/llvm/llvm-project/pull/179612