[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 #13 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I spent several hours trying to find the cause of the slowdown, without
success. Currently I am focused on fixing regressions and conformance errors. I
will come back to this when I can.