Re: RFC - Remove support for PCH post 4.8

[Benjamin Kosnik]

> Assuming that the new implementation will be available in time for 4.9, my 
> primary concern is that in the meanwhile running the libstdc++ testsuite will 
> be quite noticeably slower. Do you have some numbers?


Just use the numbers I used the last two times I tried to explain why PCH was 
useful to Diego!

http://gcc.gnu.org/wiki/PCHHaters
http://gcc.gnu.org/wiki/CompilationSpeed

The proposal to remove a useful feature before implementing a replacement was 
absurd on face value and I'm glad it's been taken off the table. 

Sheesh.

-benjamin