Re: [RS6000] Don't pass -many to the assembler

[Michael Matz <matz at suse dot de>]

Hi,

On Mon, 12 Nov 2018, Segher Boessenkool wrote:

> > > Wouldn't this also break compiling code that contains power9 
> > > instructions but guarded by runtime tests to only be executed on 
> > > power9 machines?  That seems a valid usecase, and it'd be bad if the 
> > > assembler fails to compile such.  (You can't use -mcpu=power9 as 
> > > work around as the other unguarded code is not supposed to be using 
> > > power9 insns).
> > 
> > You'll need to put .machine directives around them.
> 
> My worry with that is there may be too much legacy code that does not do 
> this :-(

We'll see once we put gcc9 through a distro build.  My worry really only 
was that the change would result in compile breakage without a sensible 
solution.  (I'll just give all packages whose build failures prevent gcc9 
from being the new system compiler to Alan for fixing ;-) ).


Ciao,
Michael.