--- Additional Comments From pinskia at gcc dot gnu dot org 2004-12-10
03:24 ---
Do you see this any more?
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What|Removed |Added
Severity|critical
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What|Removed |Added
AssignedTo|unassigned at gcc dot gnu |kazu at cs dot umass dot edu
|dot org |
Status|NEW
--- Additional Comments From kazu at cs dot umass dot edu 2004-12-10 02:17
---
A patch posted at:
http://gcc.gnu.org/ml/gcc-patches/2004-12/msg00727.html
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What|Removed |Added
--- Additional Comments From kazu at cs dot umass dot edu 2004-12-10 00:28
---
Subject: Re: [4.0 regression] loop
miscompilation at -O1 (-ftree-ch)
Hi Jeff,
> I believe your fast-path check is effectively equivalent to
>
> if ((e->flags & EDGE_DFS_BACK) == 0)
I see that we call mar
--- Additional Comments From law at redhat dot com 2004-12-09 23:23 ---
Subject: Re: [4.0 regression] loop
miscompilation at -O1 (-ftree-ch)
On Thu, 2004-12-09 at 20:02 +, kazu at cs dot umass dot edu wrote:
> --- Additional Comments From kazu at cs dot umass dot edu 20
Package: g++-4.0
Version: 4.0-0pre2
Severity: important
Tags: experimental
Hi,
the following code doesn't compile:
struct A {};
namespace Boo
{
struct B
{
friend struct A;
B(const A&) {};
};
}
int main()
{
A a;
Boo::B b(a);
return 0;
}
It compiles with g++ < 4.0.
Cheer
--- Additional Comments From kazu at cs dot umass dot edu 2004-12-09 20:02
---
Created an attachment (id=7715)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=7715&action=view)
a new patch
This patch is basically the same as the last patch except that
I've added a fast path for comm
--- Additional Comments From law at redhat dot com 2004-12-09 19:52 ---
Subject: Re: [4.0 regression] loop
miscompilation at -O1 (-ftree-ch)
On Thu, 2004-12-09 at 19:22 +, kazu at cs dot umass dot edu wrote:
> --- Additional Comments From kazu at cs dot umass dot edu 20
--- Additional Comments From kazu at cs dot umass dot edu 2004-12-09 19:22
---
Jeff,
With my new patch, stmt.i gets one fewer jump threading opportunities
(compared to what the vanilla mainline produces).
So it's very plausible that we are miscompiling stmt.c quietly.
This difference c
--- Additional Comments From law at redhat dot com 2004-12-09 18:12 ---
Subject: Re: [4.0 regression] loop
miscompilation at -O1 (-ftree-ch)
On Thu, 2004-12-09 at 16:57 +, kazu at cs dot umass dot edu wrote:
> --- Additional Comments From kazu at cs dot umass dot edu 20
--
What|Removed |Added
CC||kazu at cs dot umass dot edu
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18694
--- You are receiving this
--- Additional Comments From law at redhat dot com 2004-12-09 17:38 ---
Subject: Re: [4.0 regression] loop
miscompilation at -O1 (-ftree-ch)
On Thu, 2004-12-09 at 16:58 +, kazu at cs dot umass dot edu wrote:
> --- Additional Comments From kazu at cs dot umass dot edu 20
Processing commands for [EMAIL PROTECTED]:
> reopen 275408
Bug#275408: [fixed in 4.0-0pre1] ICE: in force_decl_die, at dwarf2out.c:12375
Bug reopened, originator not changed.
>
End of message, stopping processing here.
Please contact me if you need assistance.
Debian bug tracking system adminis
--- Additional Comments From pinskia at physics dot uc dot edu 2004-12-09
16:59 ---
Subject: Re: [4.0 regression] loop miscompilation at -O1 (-ftree-ch)
On Dec 9, 2004, at 11:57 AM, kazu at cs dot umass dot edu wrote:
>
> --- Additional Comments From kazu at cs dot umass dot edu
--- Additional Comments From kazu at cs dot umass dot edu 2004-12-09 16:59
---
Jeff,
I agree with your comment #26.
--
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--- Additional Comments From kazu at cs dot umass dot edu 2004-12-09 16:58
---
With my old patch (conservative-dom), stmt.c was miscompiled on my machine.
stage2/cc1 crashes on compiling crtstuff.c.
Replacing stmt.o with stage1/stmt.o worked for me.
--
http://gcc.gnu.org/bugzilla/sh
--- Additional Comments From kazu at cs dot umass dot edu 2004-12-09 16:57
---
Created an attachment (id=7714)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=7714&action=view)
a new patch
I think this new patch is conceptually more correct.
See the comments in the patch.
--
ht
--- Additional Comments From law at redhat dot com 2004-12-09 16:47 ---
Subject: Re: [4.0 regression] loop
miscompilation at -O1 (-ftree-ch)
On Thu, 2004-12-09 at 14:19 +, schwab at suse dot de wrote:
> --- Additional Comments From schwab at suse dot de 2004-12-09 14:19
--- Additional Comments From law at redhat dot com 2004-12-09 16:20 ---
Subject: Re: [4.0 regression] loop
miscompilation at -O1 (-ftree-ch)
On Thu, 2004-12-09 at 02:51 +, kazu at cs dot umass dot edu wrote:
> --- Additional Comments From kazu at cs dot umass dot edu 20
--- Additional Comments From schwab at suse dot de 2004-12-09 14:19 ---
The patch does no good on ia64, it causes the stage2 compiler to be
miscompiled.
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18694
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||org
http://gcc.gnu.org/bugzilla/sh
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