From: Guy Martin <gmsoft@tuxicoman.be>
To: John David Anglin <dave.anglin@nrc-cnrc.gc.ca>
Cc: dave@hiauly1.hia.nrc.ca, linux-parisc@vger.kernel.org
Subject: Re: gcc-4.5 -fdelayed-branch strikes back
Date: Fri, 11 Jun 2010 19:45:16 +0200 [thread overview]
Message-ID: <20100611194516.496c2ddf@zombie> (raw)
In-Reply-To: <20100607232907.GA10176@hiauly1.hia.nrc.ca>
Hi Dave,
> I haven't had a chance to try the your stripped down gengenrtl.c
> but there is definitely a problem compiling the 4.5 branch with
> 4.4 using STAGE1_CFLAGS="-O". This didn't occur with 4.3. I get
> an ICE in stage1 configuration of libgcc with 4.4. At this point,
> I don't know the cause but this is bad as it indicates a major
> bug with 4.4 on hppa. -fno-reorder-blocks didn't help.
I'm able to reproduce the same behavior with gcc-4.5 trying to build
itself. Can you try with -fno-delayed-branch ?
I think -freorder-blocks is just a way to trigger the issue with -O1.
The test case should make things pretty easy to repro. But if you need
some more details let me know.
Cheers,
Guy
next prev parent reply other threads:[~2010-06-11 17:45 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-04 16:17 gcc-4.5 -fdelayed-branch strikes back Guy Martin
2010-06-04 19:32 ` John David Anglin
2010-06-05 9:58 ` Guy Martin
2010-06-07 23:29 ` John David Anglin
2010-06-11 17:45 ` Guy Martin [this message]
2010-06-13 19:24 ` John David Anglin
2010-06-27 13:48 ` Guy Martin
2010-06-27 22:20 ` John David Anglin
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