[Bug target/46770] Replace .ctors/.dtors with .init_array/.fini_array on targets supporting them

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46770

--- Comment #20 from H.J. Lu <hjl.tools at gmail dot com> 2010-12-11 19:46:46 
UTC ---
(In reply to comment #12)
> OK, do you know why the order of execution of .ctor was chosen to be reversed
> even if it would make more sense to reverse .dtors?
> 

Now I remembered. The reverse order of execution of .ctor is
to support constructor priorities.  We can't change it without
breaking existing objects.