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From: "ebotcazou at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug target/39423] [SH]  performance regression: lost mov @(disp,Rn)
Date: Wed, 11 Mar 2009 10:25:00 -0000	[thread overview]
Message-ID: <20090311102507.31730.qmail@sourceware.org> (raw)
In-Reply-To: <bug-39423-14332@http.gcc.gnu.org/bugzilla/>



------- Comment #7 from ebotcazou at gcc dot gnu dot org  2009-03-11 10:25 -------
> I thought that the now what as with your patch. So it looks indeed like quite
> similar to what I see. I'll try to see why it doesn't solve my case.

Reverting to the old canonicalization at the tree level is not doable, that's
why the patch does it during RTL expansion and only for offsets.  It probably
would need to be extended if that's not sufficient for your testcase.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39423


  parent reply	other threads:[~2009-03-11 10:25 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-03-10 13:27 [Bug target/39423] New: [ chrbr at gcc dot gnu dot org
2009-03-10 13:34 ` [Bug target/39423] [ paolo dot carlini at oracle dot com
2009-03-11  8:46 ` [Bug target/39423] [SH] performance regression: lost mov @(disp,Rn) chrbr at gcc dot gnu dot org
2009-03-11  8:53 ` chrbr at gcc dot gnu dot org
2009-03-11  9:06 ` ebotcazou at gcc dot gnu dot org
2009-03-11  9:30 ` chrbr at gcc dot gnu dot org
2009-03-11  9:36 ` ebotcazou at gcc dot gnu dot org
2009-03-11  9:46 ` chrbr at gcc dot gnu dot org
2009-03-11 10:25 ` ebotcazou at gcc dot gnu dot org [this message]
2009-03-11 14:08 ` chrbr at gcc dot gnu dot org
2009-03-12 15:04 ` chrbr at gcc dot gnu dot org
2009-03-12 15:11 ` chrbr at gcc dot gnu dot org
2009-03-31 16:09 ` [Bug target/39423] [4.3/4.4/4.5 Regression] " jsm28 at gcc dot gnu dot org
2009-03-31 19:11 ` jakub at gcc dot gnu dot org
2009-08-04 12:48 ` rguenth at gcc dot gnu dot org
2010-05-22 18:33 ` [Bug target/39423] [4.3/4.4/4.5/4.6 " rguenth at gcc dot gnu dot org

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