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Re: Problem with PFE approach [Was: Faster compilation speed]
- From: "Timothy J. Wood" <tjw at omnigroup dot com>
- To: Andrew Pinski <pinskia at physics dot uc dot edu>
- Cc: gcc at gcc dot gnu dot org
- Date: Sun, 18 Aug 2002 14:55:24 -0700
- Subject: Re: Problem with PFE approach [Was: Faster compilation speed]
On Sunday, August 18, 2002, at 02:36 PM, Andrew Pinski wrote:
With the current implementation it's pretty good for day to day
development. It could be better than it is, but it is MUCH better than
before. The game I'm porting from Win32 to Mac OS X builds much faster
than it did without PFE. I haven't done any timing tests, but the
application specific headers are pretty complicated (lots of C++
templates and such) and I suspect that I would get much worse build
performance if I only included system headers in the PFE. I'm not sure
how to reliably quantify this, though.
PFE is good for headers that hardly change, like system headers.
It is not good for headers that change in development.