[PATCH 2/3] Set power10 fusion if -mtune=power10.

Michael Meissner meissner@linux.ibm.com
Mon Nov 22 21:13:27 GMT 2021


On Mon, Nov 22, 2021 at 10:06:17AM -0600, Bill Schmidt wrote:
> Hi Mike,
> 
> On 11/19/21 8:55 AM, Michael Meissner wrote:
> > Set power10 fusion if -mtune=power10.
> >
> > In doing the patch for zero cycle moves for switch statements and indirect
> > jumps, I noticed the fusion support is only done if -mcpu=power10.  This option
> > enables power10 fusion if we use -mtune=power10.
> >
> > I have built and run the testsuites on little endian power9 and power10 systems
> > with no regressions.  Can I install this patch?
> 
> This all seems fine, but since we're planning on collapsing all those flags
> anyway, maybe it would be better if we did that first.  This seems like work
> that will mostly be removed soon.  But no concerns from me otherwise.
> 
> Thanks!
> Bill

It sitll is useful early on to do builds with/without to see what the bubbles
are.  But yeah, we could eliminate it.

-- 
Michael Meissner, IBM
PO Box 98, Ayer, Massachusetts, USA, 01432
email: meissner@linux.ibm.com


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