Merging calls to `abort'

[Daniel Jacobowitz]

On Mon, Mar 14, 2005 at 04:49:41PM -0800, Eric Christopher wrote:
> 
> > > Now, I wouldn't object to hacking GCC to avoid cross-jumping calls to
> > > abort.  It's just that I don't think that the common GNU use of abort
> > > serves the users.
> > Agreed.  And as someone suggested, rather than treating abort
> > specially within GCC, I think we'd be better off with a function
> > attribute which prevented cross jumping to any function with
> > the attribute set.
> 
> I think it makes sense to just not crossjump noreturn attribute
> functions if we're going to do this.

I'm inclined to agree.  I also think that we should be making this
change, at least at -O2.

I talked to Mark Mitchell about this briefly this evening.  He pointed
out that __cxa_throw is a noreturn function where crossjumping is often
useful.  So perhaps we do need an attribute, but I'm not sure which way
the default should go.

-- 
Daniel Jacobowitz
CodeSourcery, LLC