[PATCH][C++] Improve PR15855 (compile-time/memory hog)

[Gabriel Dos Reis]

Richard Guenther <richard.guenther@gmail.com> writes:

| if and if only priorities are equal and we don't need a guard (for possibly
| multiple initialization).  It also never re-orders the __ctor calls.

that is what I wanted to know.

Thanks,

-- Gaby