Vanilla GCC 9 slower than Ubuntu GCC 9

[Tadeus Prastowo]

On Fri, May 31, 2019 at 4:48 PM Tadeus Prastowo
<tadeus.prastowo@unitn.it> wrote:
>
> On Fri, May 31, 2019 at 4:43 PM Tadeus Prastowo
> <tadeus.prastowo@unitn.it> wrote:
> >
> > On Wed, May 29, 2019 at 12:37 PM Tadeus Prastowo
> > <tadeus.prastowo@unitn.it> wrote:
> > >
> > > On Tue, May 28, 2019 at 10:00 PM Stefan Ring <stefanrin@gmail.com> wrote:
> > > > I guess the Ubuntu package uses "make profiledbootstrap", which you
> > > > don’t get (IIRC) when just issuing "make".

[...]

> > Yes, it is very likely that the use of `make profiledbootstrap' is the
> > main factor that boosts the compilation speed of vanilla GCC 9.
> >
> > I say ``very likely'' because compiling vanilla GCC 9 using `make
> > profiledbootstrap' results in a missing Makefile error as detailed in
> > this thread: https://gcc.gnu.org/ml/gcc-help/2019-05/msg00137.html

[...]

> > So, I hypothesize that if the vanilla
> > GCC 9 were successful, it would also run faster by almost 15%.

Since the build problem at
https://gcc.gnu.org/ml/gcc-help/2019-05/msg00137.html has been fixed,
I can build vanilla GCC 9 with `make profiledbootstrap' and confirm
that doing so makes the vanilla GCC 9 run faster by almost 15%.

-- 
Best regards,
Tadeus