From: Jeff Law <law@redhat.com>
To: Eric Botcazou <botcazou@adacore.com>,
Hans-Peter Nilsson <hp@bitrange.com>
Cc: gcc-patches@gcc.gnu.org
Subject: Re: H8 cc0 conversion
Date: Tue, 24 Nov 2020 08:23:41 -0700 [thread overview]
Message-ID: <3c939688-c54f-c7de-e563-2c4d1a6d3c49@redhat.com> (raw)
In-Reply-To: <7763357.gu0YAMHDHY@fomalhaut>
On 11/24/20 4:08 AM, Eric Botcazou wrote:
>> I'm intested in any notes, however vague, on that matter. I was
>> a bit surprised to see that myself...that is, after fixing
>> *some* related regressions, like the one in combine. (Did I
>> actually miss something?)
> My recollection for the Visium port would align with what Jeff saw but, on the
> other hand, this could have been very marginal a phenomenon in the end.
I never tried to quantify it myself. I certainly saw improvements
dropping the unnecessary clobbers from the shifting patterns on the H8
independently of the cc0 converseion.
jeff
next prev parent reply other threads:[~2020-11-24 15:23 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-22 19:27 Jeff Law
2020-11-24 4:49 ` Hans-Peter Nilsson
2020-11-24 5:50 ` Jeff Law
2020-11-24 10:02 ` Hans-Peter Nilsson
2020-11-24 11:08 ` Eric Botcazou
2020-11-24 15:23 ` Jeff Law [this message]
2020-11-25 22:05 ` Hans-Peter Nilsson
2020-11-28 18:44 ` Paul Koning
2020-12-04 16:03 ` Maciej W. Rozycki
2020-12-08 5:43 ` Maciej W. Rozycki
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