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

[trippels at gcc dot gnu.org]

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

Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |trippels at gcc dot gnu.org

--- Comment #12 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
As Jonathan wrote, the standard library must conform to the C++ standard.

You simply cannot expect fast compile times out of the box when you make heavy
use of stl/boost.
(Although careful analysis might bring it down considerably. (e.g., bundling
most template instantiations into a single compilation unit))

For the attached testcase clang's libc++ is even 30% slower than gcc-4.9
libstdc++.