[PATCH] Optimize pointers to member function

[John McCall]

On Feb 14, 2013, at 3:57 AM, Olivier Goffart <ogoffart at kde.org> wrote:
> This patch optimize comparison and calling of pointers to member function.
> 
> If we know that a given class do not have multiple inheritance, we can 
> simplify the comparison and the calls as the pointer to this will never be 
> shifted.
> On the Microsoft ABI (which is not implemented in clang), the size of a 
> pointer to a member function is even reduced in that case.[1]

A pointer-to-member may point to a member of a derived class.

John.