cpplib: Separate out translation phases 1 and 2

[Devang Patel]

On Friday, April 18, 2003, at 03:46 PM, Neil Booth wrote:

> Devang Patel wrote:-
>
>> Do you have any estimate of compile-time speed impact of this patch?
>> Even comparison for GCC (say, FSF TOT as of yesterday) build time
>> with and  without this patch will give us some estimate. We would
>> like to avoid slowdown.
>
> Actually, WTF, I think I'll do this, though like I said it's not really
> a fair comparison.  I'll report the results tomorrow to "make 
> bootstrap"
> GCC before and after the patch with --enable-languages=c and
> --disable-checking; the latter setting will also magnify any slowdown.

This will give us bootstrap timing for two different set of sources.
It is not strictly comparing Apple and Apple.

I'd do
- Build gcc1 which does not have your patch
- Build gcc2 which is gcc1 + your patch
- Select appropriate GCC sources
- Build it with gcc1
- Build same sources with gcc2

(no need to bootstrap)

-Devang