--- Comment #3 from pinskia at gcc dot gnu dot org 2007-09-09 10:37 ---
Subject: Re: Slow calls through simple member function pointers
On 9 Sep 2007 06:47:40 -, dleska at gmail dot com
<[EMAIL PROTECTED]> wrote:
> Is this optimisation not possible in gcc?
Only because the ABI tha
On 9 Sep 2007 06:47:40 -, dleska at gmail dot com
<[EMAIL PROTECTED]> wrote:
> Is this optimisation not possible in gcc?
Only because the ABI that GCC follows (the IA64 C++ ABI) says
otherwise so we have to follow that.
If you want this optimization, you will need the whole program as even
if
--- Comment #2 from dleska at gmail dot com 2007-09-09 06:47 ---
(In reply to comment #1)
> VS seems to dispatch to some other function.
Yep - if the function is virtual, VS generates a stub that does the vtable
lookup. However for non virtual function the call is direct - which is muc
--- Comment #1 from rguenth at gcc dot gnu dot org 2007-09-08 20:40 ---
VS seems to dispatch to some other function. Dependend on whether the method
is virtual or not the code path has to be more complicated. Of course this is
also dependent on the actual ABI. That is,
L7:
le
