From: Bernd Schmidt <bernds@codesourcery.com>
To: Eric Botcazou <ebotcazou@adacore.com>
Cc: GCC Patches <gcc-patches@gcc.gnu.org>,
Steve Ellcey <sje@cup.hp.com>,
"Vladimir N. Makarov" <vmakarov@redhat.com>
Subject: Re: Correct fix for scheduler bug PR11320
Date: Thu, 14 Jul 2011 12:24:00 -0000 [thread overview]
Message-ID: <4E1EDDB1.2060008@codesourcery.com> (raw)
In-Reply-To: <201107141357.15147.ebotcazou@adacore.com>
On 07/14/11 13:57, Eric Botcazou wrote:
>> The real problem here is that the ia64 backend lies to the rest of the
>> compiler; it produces a load instruction without showing a MEM anywhere
>> in the instruction pattern. Hence, the following patch, which reverts
>> the bogus scheduler changes and adds a MEM to a pattern in ia64.md.
>
> This is probably the root cause of the problem, indeed. But you don't revert
> everything so, if this isn't an oversight, then the ChangeLog is incorrect.
> And there is another change in sched-deps.c not mentioned in the ChangeLog.
Well, the actual code has completely changed in the meantime. All the
hunks of the original patch failed :) I can write a new ChangeLog entry
if that seems important.
Any particular bits you still see that don't get reverted with this patch?
Bernd
next prev parent reply other threads:[~2011-07-14 12:15 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-14 10:05 Bernd Schmidt
2011-07-14 11:29 ` Andrey Belevantsev
2011-07-14 11:42 ` Bernd Schmidt
2011-07-14 12:19 ` Eric Botcazou
2011-07-14 12:24 ` Bernd Schmidt [this message]
2011-07-14 12:39 ` Eric Botcazou
2011-07-14 13:09 ` Bernd Schmidt
2011-07-14 13:46 ` Eric Botcazou
2011-07-14 16:11 ` Richard Henderson
2011-07-14 16:27 ` Bernd Schmidt
2011-07-14 16:30 ` Bernd Schmidt
2011-07-14 16:34 ` Richard Henderson
2011-07-14 16:43 ` Bernd Schmidt
2011-07-14 16:44 ` Richard Henderson
2011-07-14 16:48 ` Bernd Schmidt
2011-07-14 19:48 ` Richard Henderson
2011-07-19 13:00 ` Andreas Schwab
2011-07-19 14:13 ` Bernd Schmidt
2011-07-19 14:41 ` Andreas Schwab
2011-07-22 14:12 ` Bernd Schmidt
2011-07-22 17:28 ` Eric Botcazou
2011-07-22 18:36 ` Richard Henderson
2011-07-22 18:44 ` Bernd Schmidt
2011-08-05 17:54 ` Bernd Schmidt
2011-08-05 18:45 ` Richard Henderson
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