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From: James Greenhalgh <james.greenhalgh@arm.com>
To: Steve Ellcey <sellcey@cavium.com>
Cc: Kyrill Tkachov <kyrylo.tkachov@foss.arm.com>,
	gcc-patches	<gcc-patches@gcc.gnu.org>,
	Richard Earnshaw <Richard.Earnshaw@arm.com>,
	Marcus Shawcroft <Marcus.Shawcroft@arm.com>, <nd@arm.com>
Subject: Re: [Patch][aarch64] Add missing thunderx2-t99 instruction scheduling pipeline descriptions.
Date: Tue, 05 Dec 2017 14:39:00 -0000	[thread overview]
Message-ID: <20171205143906.GB5600@arm.com> (raw)
In-Reply-To: <1512408817.14842.15.camel@cavium.com>

On Mon, Dec 04, 2017 at 05:33:37PM +0000, Steve Ellcey wrote:
> On Mon, 2017-12-04 at 17:18 +0000, Kyrill Tkachov wrote:
> 
> > > +(define_insn_reservation "thunderx2t99_multiple" 1
> > > +  (and (eq_attr "tune" "thunderx2t99")
> > > +       (eq_attr "type" "multiple"))
> > > +  "thunderx2t99_i0+thunderx2t99_i1+thunderx2t99_i2+thunderx2t99_ls
> > > 0+thunderx2t99_ls1+thunderx2t99_sd+thunderx2t99_i1m1+thunderx2t99_i
> > > 1m2+thunderx2t99_i1m3+thunderx2t99_ls0d1+thunderx2t99_ls0d2+thunder
> > > x2t99_ls0d3+thunderx2t99_ls1d1+thunderx2t99_ls1d2+thunderx2t99_ls1d
> > > 3+thunderx2t99_f0+thunderx2t99_f1")
> > > +
> > We try to adhere to the 80 columns per line rule in the scheduling 
> > description files as well,
> > so can you please use "\" to break this into multiple lines.
> 
> Yes, I wasn't sure if whatever program parses this file would honor
> backslashes so I didn't break it up.  The falkor_extra definition in
> falkor.md that I looked at is more than 80 characters and that is one
> of the reasons I wasn't sure backslashes would be honored.  But I see
> other places (power8.md) where the backslashes are used so I will make
> that change if and when the patch is approved.

As long as it bootstraps I'm happy to take it - I'm sure you're better placed
to spot and understand regressions in thunderx2t99 performance than I am.

OK

Thanks,
James

      reply	other threads:[~2017-12-05 14:39 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-12-01 18:42 Steve Ellcey
2017-12-04 17:18 ` Kyrill Tkachov
2017-12-04 17:33   ` Steve Ellcey
2017-12-05 14:39     ` James Greenhalgh [this message]

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