[Lldb-commits] [clang] [lldb] [Clang] Improve Sema diagnostic performance for __builtin_counted_by_ref (PR #116719)

[Bill Wendling via lldb-commits]

bwendling wrote:

> > Could you point to a place in the code where it creates a placeholder?
> 
> I mean, e.g. `CheckPointerToMemberOperands()` can return `BoundMemberTy` as the type of a `.*` expression, and `CreateBuiltinMatrixSubscriptExpr()` creates a `MatrixSubscriptExpr` with type `IncompleteMatrixIdxTy` if that’s what you’re asking.

`CheckPointerToMemberOperands` only returns the placeholder type. The matrix one isn't a `CallExpr`, so it doesn't help me much. Anyway, this is irrelevant now as I'm going another way.

https://github.com/llvm/llvm-project/pull/116719