gcc/gcc config.gcc config/sparc/linux.h config ...

[Daniel Jacobowitz]

On Thu, Apr 04, 2002 at 02:09:42PM -0500, Brad Lucier wrote:
> > 
> > Brad Lucier wrote:
> > 
> > > Also, this is a performance increase of about a factor of 100, and it seems
> > > to be extremely simple and clean; should it not also be installed on the
> > > 3.1 branch?
> > 
> > Are you sure you really *want* underflow-flushed-to-zero ?  [ You're one
> > of our (i.e., gcc testers') IEEE-conformant users - at least so I
> > thought ]
> 
> It's only enabled with -funsafe-math-optimizations or -ffast-math, so,
> to me, it's OK.

What worries me is that this changes the behavior of code not compiled
with -ffast-math.  For instance, I bet this will break someone's libm
implementation...  I believe glibc's is prone to looping when it's in a
rounding mode it doesn't expect.

-- 
Daniel Jacobowitz                           Carnegie Mellon University
MontaVista Software                         Debian GNU/Linux Developer