[Lldb-commits] [clang] [lldb] Reland [MS][clang] Add support for vector deleting destructors (PR #165598)

[David Majnemer via lldb-commits]

majnemer wrote:

Will we generate local vftables for dllimport'd classes too? I think that is needed as part of properly supporting this feature.

Example input:
```c++
struct __declspec(dllexport) A {
  virtual ~A();    
};
struct __declspec(dllimport) B {
  virtual ~B();
};
void* f() {return new A;}
void* g() {return new B;}
```

MSVC generates:
```
const B::`local vftable' DQ   FLAT:const B::`RTTI Complete Object Locator'                  ; B::`local vftable'
        DQ      FLAT:virtual void * B::`vector deleting destructor'(unsigned int)
const A::`vftable' DQ   FLAT:const A::`RTTI Complete Object Locator'                  ; A::`vftable'
        DQ      FLAT:virtual void * A::`vector deleting destructor'(unsigned int)
```

https://github.com/llvm/llvm-project/pull/165598