[Bug c++/60976] Compilation with G++ 4.9.0 is 2-3 times slower than with 4.8.2

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60976

--- Comment #37 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Giuseppe Ottaviano from comment #36)
> I reported our relative build times with my version of the partial
> specialization a few comments above:
> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60976#c26 .

Yep, thanks. I'm hoping Viacheslav or Rene can try it too.

> Your partial specialization patch causes an ICE in our version of GCC 4.9:

I think that ICE is fixed by r234337 on the 4.9 branch, which I committed right
before the allocator_traits patch.

Good to know that what I committed is no slower than your locally patched
version, thanks for checking.