From: Bernd Schmidt <bernds_cb1@t-online.de>
To: Jan Hubicka <jh@suse.cz>,
Kenneth Zadeck <Kenneth.Zadeck@NaturalBridge.com>,
gcc-patches@gcc.gnu.org, "Bonzini, Paolo" <bonzini@gnu.org>,
Kaz Kojima <kkojima@rr.iij4u.or.jp>,
zadeck@naturalbridge.com, rsandifo@nildram.co.uk
Subject: Re: RTL sharing tester (for testing)
Date: Fri, 29 Jun 2007 13:37:00 -0000 [thread overview]
Message-ID: <4684F091.1010904@t-online.de> (raw)
In-Reply-To: <87abujjjnk.fsf@firetop.home>
Richard Sandiford wrote:
> If every register in [regno_first, regno_last] was unused, flow would
> add a REG_UNUSED note for the REG created above. If only some of those
> registers were unused, flow would add notes for the individual unused
> registers. As I said on IRC yesterday, I'm not convinced the first
> behaviour was a good idea. That REG might well be invalid (otherwise
> why have a SUBREG in the first place?) and it's better not to have
> invalid registers floating around.
I agree with everything in your analysis, except possibly this. If the
SUBREG is valid, then I see no way how the REG could be invalid. Since
flow used to do this, I prefer we keep the same behaviour.
Bernd
--
This footer brought to you by insane German lawmakers.
Analog Devices GmbH Wilhelm-Wagenfeld-Str. 6 80807 Muenchen
Sitz der Gesellschaft Muenchen, Registergericht Muenchen HRB 40368
Geschaeftsfuehrer Thomas Wessel, William A. Martin, Margaret Seif
next prev parent reply other threads:[~2007-06-29 11:44 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-26 3:43 Jan Hubicka
2007-06-27 15:55 ` Kenneth Zadeck
2007-06-27 18:17 ` Diego Novillo
2007-06-27 21:43 ` Jan Hubicka
2007-06-28 2:02 ` Kaz Kojima
2007-06-28 4:24 ` Jan Hubicka
2007-06-28 8:11 ` Paolo Bonzini
2007-06-28 17:16 ` Kenneth Zadeck
2007-06-28 18:26 ` Jan Hubicka
2007-06-28 19:57 ` Kenneth Zadeck
2007-06-28 20:27 ` Richard Sandiford
2007-06-29 8:29 ` Richard Sandiford
2007-06-29 12:11 ` Kenneth Zadeck
2007-06-29 13:35 ` Paolo Bonzini
2007-06-29 13:37 ` Bernd Schmidt [this message]
2007-06-29 13:39 ` Jan Hubicka
2007-06-29 16:55 ` Richard Sandiford
2007-07-13 10:15 ` RFA: Stop df from generating SUBREG REG_NOTES Richard Sandiford
2007-07-25 22:50 ` Richard Sandiford
2007-07-27 0:01 ` Ian Lance Taylor
2007-06-28 20:19 ` RTL sharing tester (for testing) Paolo Bonzini
2007-06-27 23:06 ` Mark Mitchell
2007-06-27 23:06 ` Jan Hubicka
2007-06-27 23:12 ` Eric Christopher
2007-06-28 0:48 ` Jan Hubicka
2007-06-28 22:24 ` Eric Christopher
2007-06-29 23:14 ` Graham Stott
2007-06-30 0:17 ` Jan Hubicka
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4684F091.1010904@t-online.de \
--to=bernds_cb1@t-online.de \
--cc=Kenneth.Zadeck@NaturalBridge.com \
--cc=bonzini@gnu.org \
--cc=gcc-patches@gcc.gnu.org \
--cc=jh@suse.cz \
--cc=kkojima@rr.iij4u.or.jp \
--cc=rsandifo@nildram.co.uk \
--cc=zadeck@naturalbridge.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).