This is the mail archive of the gcc-patches@gcc.gnu.org mailing list for the GCC project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: [patch] rtlopt branch merge part 6 - speed improvement of branch predictions


> > > 	* Makefile.in (sreal.o): Added.
> > > 	(predict.o): Depends on sreal.h instead of real.h.
> > > 	* sreal.c: New file.
> > > 	* sreal.h: New file.
> > > 	* predict.c: Use sreal.c instead of real.c.
> > 
> > I wonder if the following would be better.  Thoughts?
> 
> I was playing around with this, but this fails when the underlying FP
> implementation changes - ie x87 math has double rounding even with
> volitales everywhere and you get different results when you bootstrap
> using x87 compiler compiler that uses SSE math.

The old predict.c (using real.c) or the new one?

Josef


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]