-fnew-ra -- which architectures?

Daniel Berlin dberlin@dberlin.org
Tue Jul 16 04:36:00 GMT 2002


On 16 Jul 2002, Falk Hueffner wrote:

> Daniel Berlin <dberlin@dberlin.org> writes:
> 
> > > Thanks, this fixes the problem. Improvements are moderate on my test
> > > case, though:
> > > 
> > >                   number of stack writes
> > > gcc -O1             0
> > > Compaq Compiler    11 (the caller saved registers)
> > > gcc -O3           119
> > > gcc -O3 -fnew-ra  101
> > > 
> > > Are you interested in the test case?
> >
> > SUre, if course like, though a 20% reduction is nothing to sneeze
> > at.
> 
> It would be great normally, but in this case, most or all of the
> stores could be eliminated, as -O1 shows, and I had hoped the new
> regalloc would manage that.
I'll need to see the case.




More information about the Gcc mailing list