[Bug c++/78104] optimizer doesn't grok C++ new/delete yet

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78104

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
(In reply to Markus Trippelsdorf from comment #0)
> A simple example:
> 
> int main() {
>   int *ob = new int();
>   delete ob;
> }
> 
> clang optimizes it away:

Which is funny considering what Chris Lattner  wrote in PR 23383 comment #4:
This would not be legal, there is no reason operator new can't return a pointer
that already exists in the program.