Re: Mechanism to configure default scheduling model on PA

["John David Anglin" <dave at hiauly1 dot hia dot nrc dot ca>]

>  In message <200205311843.g4VIhRDk006815@hiauly1.hia.nrc.ca>, "John David 
> Anglin" writes:
>  > Yes, it seems reasonable to default to the most advanced architecture
>  > that the target supports.  That should give the best overall performance.
>  > It will also provide a better range of testing for each architecture.
> My suggestion was to default to whatever machine you're building the compiler
> on.  Not the most modern architecture.

The compiler itself needs to be built with an architecture that's consistent
with the host machine, not the build machine.  I would argue that the
default output of the compiler should be determined by the architecture
of the target machine.

In cases where build, host and target differ, then we have a cross
compiler scenario and the generated code may not run on the host or
build machine.

As you note, we don't need any new configuration option for architecture
selection.

Dave
-- 
J. David Anglin                                  dave.anglin@nrc.ca
National Research Council of Canada              (613) 990-0752 (FAX: 952-6605)