From: Jeff Law <law@redhat.com>
To: Eric Botcazou <ebotcazou@adacore.com>
Cc: Bernd Schmidt <bernds@codesourcery.com>,
gcc-patches@gcc.gnu.org,
Steven Bosscher <stevenb.gcc@gmail.com>,
Jim Wilson <wilson@codesourcery.com>
Subject: Re: ifcvt/crossjump patch: Fix PR 42496, 21803
Date: Tue, 27 Jul 2010 15:31:00 -0000 [thread overview]
Message-ID: <4C4EFAEC.4030102@redhat.com> (raw)
In-Reply-To: <201007240005.55586.ebotcazou@adacore.com>
On 07/23/10 16:05, Eric Botcazou wrote:
>> Before you do that, here's a new version. This corrects a few errors in
>> the register lifetime handling, and adds support for moving across two
>> basic blocks, which is very useful for switch statements but happens in
>> other cases as well.
> This implementation really moves insns whereas cross-jumping, the reversed
> transformation, is implemented by means of operations on the CFG. Although
> this is probably not as straightforward in this direction, did you consider
> the CFG approach instead? Wouldn't it simplify a little the integration in
> the cfgcleanup.c framework?
It's probably worth noting that these optimizations are more effective
when they're allowed to move insns. So while limiting to CFG
approaches may simplify things, it also leads to fewer opportunities to
commonize code.
jeff
next prev parent reply other threads:[~2010-07-27 15:28 UTC|newest]
Thread overview: 95+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-31 22:08 Bernd Schmidt
2010-04-01 18:00 ` Steven Bosscher
2010-04-01 18:01 ` Bernd Schmidt
2010-04-02 9:45 ` Bernd Schmidt
2010-04-06 9:21 ` Bernd Schmidt
2010-04-10 10:37 ` Eric Botcazou
2010-04-12 23:34 ` Bernd Schmidt
2010-04-13 21:14 ` Eric Botcazou
2010-04-13 21:36 ` Bernd Schmidt
2010-04-13 21:51 ` Eric Botcazou
2010-04-14 20:51 ` Bernd Schmidt
2010-04-14 21:09 ` Bernd Schmidt
2010-04-19 22:05 ` Eric Botcazou
2010-04-19 22:14 ` Steven Bosscher
2010-04-19 22:18 ` Steven Bosscher
2010-04-19 22:47 ` Steven Bosscher
2010-04-20 10:34 ` Eric Botcazou
2010-04-20 11:26 ` Bernd Schmidt
2010-04-23 9:25 ` Eric Botcazou
2010-04-23 11:15 ` Steven Bosscher
2010-05-15 11:24 ` Steven Bosscher
2010-05-28 10:00 ` Eric Botcazou
2010-05-28 11:20 ` Steven Bosscher
2010-04-20 12:30 ` Bernd Schmidt
2010-07-20 20:43 ` Bernd Schmidt
2010-07-22 19:47 ` Eric Botcazou
2010-07-22 21:09 ` Bernd Schmidt
2010-07-23 22:06 ` Eric Botcazou
2010-07-23 22:13 ` Bernd Schmidt
2010-07-24 13:07 ` Eric Botcazou
2010-07-26 9:42 ` Bernd Schmidt
2010-07-26 13:40 ` Paolo Bonzini
2010-07-26 13:50 ` Paolo Bonzini
2010-07-26 13:56 ` Bernd Schmidt
2010-07-26 14:14 ` Paolo Bonzini
2010-07-27 8:31 ` Eric Botcazou
2010-07-27 9:37 ` Bernd Schmidt
2010-07-27 13:35 ` Bernd Schmidt
2010-07-27 22:38 ` Eric Botcazou
2010-07-28 16:58 ` Jeff Law
2010-07-29 8:25 ` Eric Botcazou
2010-07-27 17:39 ` Jeff Law
2010-07-27 22:05 ` Bernd Schmidt
2010-07-27 22:40 ` Eric Botcazou
2010-07-28 17:06 ` Jeff Law
2010-07-29 17:28 ` Jeff Law
2010-07-29 17:43 ` Bernd Schmidt
2010-07-27 22:23 ` Eric Botcazou
2010-07-27 23:04 ` Bernd Schmidt
2010-07-28 8:40 ` Eric Botcazou
2010-07-28 10:13 ` Bernd Schmidt
2010-07-28 19:40 ` Jeff Law
2010-07-28 20:15 ` Bernd Schmidt
2010-07-29 16:00 ` Jeff Law
2010-07-29 16:21 ` Paolo Bonzini
2010-07-29 17:09 ` Bernd Schmidt
2010-07-29 17:13 ` Paolo Bonzini
2010-07-30 0:55 ` Steven Bosscher
2010-07-28 18:31 ` Jeff Law
2010-07-28 18:36 ` Paolo Bonzini
2010-07-29 9:07 ` Eric Botcazou
2010-07-27 23:08 ` Paolo Bonzini
2010-07-28 21:44 ` Bernd Schmidt
2010-07-29 14:31 ` Jeff Law
2010-07-27 15:31 ` Jeff Law [this message]
2010-07-27 22:18 ` Eric Botcazou
2010-07-28 17:07 ` Jeff Law
2010-07-28 17:38 ` Bernd Schmidt
2010-08-02 15:57 ` Jeff Law
2010-08-02 15:59 ` Bernd Schmidt
2010-08-02 16:05 ` Jeff Law
2010-08-02 16:15 ` Bernd Schmidt
2010-08-03 14:10 ` Bernd Schmidt
2010-08-03 15:16 ` Jeff Law
2010-08-03 15:31 ` Bernd Schmidt
2010-08-03 17:13 ` Jeff Law
2010-08-04 13:36 ` Bernd Schmidt
2010-08-30 16:00 ` Bernd Schmidt
2010-09-20 10:23 ` Bernd Schmidt
2010-09-20 16:25 ` Jeff Law
2010-09-23 15:53 ` Bernd Schmidt
2010-09-23 22:00 ` Richard Guenther
2010-09-23 22:03 ` Richard Guenther
2010-09-23 22:18 ` Bernd Schmidt
2010-09-24 11:29 ` Richard Guenther
2010-09-27 15:56 ` Fix PR45792, cris-elf build breakage from PR44374-fix "ifcvt/crossjump patch: Fix PR 42496, 21803" Hans-Peter Nilsson
2010-09-27 20:34 ` Bernd Schmidt
2010-09-27 23:38 ` Hans-Peter Nilsson
2010-09-28 0:07 ` Bernd Schmidt
2010-10-02 13:07 ` ifcvt/crossjump patch: Fix PR 42496, 21803 H.J. Lu
2010-10-03 11:33 ` Bernd Schmidt
2010-10-03 11:39 ` H.J. Lu
2010-10-06 1:12 ` H.J. Lu
2010-10-06 2:46 ` H.J. Lu
2010-04-12 20:43 ` Jim Wilson
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