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* [Bug c/52996] New: ice in verify_loop_structure, at cfgloop.c:1567
@ 2012-04-15 14:59 regehr at cs dot utah.edu
2012-04-15 16:11 ` [Bug middle-end/52996] [4.8 Regression] " pinskia at gcc dot gnu.org
` (13 more replies)
0 siblings, 14 replies; 15+ messages in thread
From: regehr at cs dot utah.edu @ 2012-04-15 14:59 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52996
Bug #: 52996
Summary: ice in verify_loop_structure, at cfgloop.c:1567
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassigned@gcc.gnu.org
ReportedBy: regehr@cs.utah.edu
CC: chenyang@cs.utah.edu
[regehr@dyson r33]$ current-gcc -O3 -c small.c
small.c: In function 'fn1':
small.c:29:1: error: edge from 18 to 19 should be marked irreducible
}
^
small.c:29:1: error: basic block 19 should be marked irreducible
}
^
small.c:29:1: error: edge from 19 to 11 should be marked irreducible
}
^
small.c:29:1: internal compiler error: in verify_loop_structure, at
cfgloop.c:1567
}
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
[regehr@dyson r33]$ cat small.c
int a, b, c, d, e, f;
void
fn1 ()
{
int g, h;
lbl_173:
if (a)
c++;
lbl_158:
e = 0;
h = 0;
for (; h > -8; h--)
{
g = 0;
for (; g <= 0; g += 1)
{
d = 1;
for (; d >= 0; d -= 1)
a = 1;
if (b)
break;
if (f)
return;
if (h)
goto lbl_158;
}
}
goto lbl_173;
}
[regehr@dyson r33]$ current-gcc -v
Using built-in specs.
COLLECT_GCC=current-gcc
COLLECT_LTO_WRAPPER=/uusoc/exports/scratch/regehr/z/compiler-install/gcc-r186455-install/bin/../libexec/gcc/x86_64-unknown-linux-gnu/4.8.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../configure --with-libelf=/usr/local --enable-lto
--prefix=/home/regehr/z/compiler-install/gcc-r186455-install
--program-prefix=r186455- --enable-languages=c,c++
Thread model: posix
gcc version 4.8.0 20120414 (experimental) (GCC)
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug middle-end/52996] [4.8 Regression] ice in verify_loop_structure, at cfgloop.c:1567
2012-04-15 14:59 [Bug c/52996] New: ice in verify_loop_structure, at cfgloop.c:1567 regehr at cs dot utah.edu
@ 2012-04-15 16:11 ` pinskia at gcc dot gnu.org
2012-04-16 9:33 ` rguenth at gcc dot gnu.org
` (12 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: pinskia at gcc dot gnu.org @ 2012-04-15 16:11 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52996
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-on-valid-code
Component|c |middle-end
Target Milestone|--- |4.8.0
Summary|ice in |[4.8 Regression] ice in
|verify_loop_structure, at |verify_loop_structure, at
|cfgloop.c:1567 |cfgloop.c:1567
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug middle-end/52996] [4.8 Regression] ice in verify_loop_structure, at cfgloop.c:1567
2012-04-15 14:59 [Bug c/52996] New: ice in verify_loop_structure, at cfgloop.c:1567 regehr at cs dot utah.edu
2012-04-15 16:11 ` [Bug middle-end/52996] [4.8 Regression] " pinskia at gcc dot gnu.org
@ 2012-04-16 9:33 ` rguenth at gcc dot gnu.org
2012-04-16 10:58 ` rguenth at gcc dot gnu.org
` (11 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-04-16 9:33 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52996
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed| |2012-04-16
AssignedTo|unassigned at gcc dot |rguenth at gcc dot gnu.org
|gnu.org |
Ever Confirmed|0 |1
--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-04-16 09:32:47 UTC ---
Mine.
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug middle-end/52996] [4.8 Regression] ice in verify_loop_structure, at cfgloop.c:1567
2012-04-15 14:59 [Bug c/52996] New: ice in verify_loop_structure, at cfgloop.c:1567 regehr at cs dot utah.edu
2012-04-15 16:11 ` [Bug middle-end/52996] [4.8 Regression] " pinskia at gcc dot gnu.org
2012-04-16 9:33 ` rguenth at gcc dot gnu.org
@ 2012-04-16 10:58 ` rguenth at gcc dot gnu.org
2012-09-07 11:21 ` rguenth at gcc dot gnu.org
` (10 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-04-16 10:58 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52996
--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-04-16 10:58:06 UTC ---
Looks like a pre-existing bug to me - when we unswitch loops computing
irreducible regions before / after that can lead to inconsistent results.
Loop preserving leads to different loop structure at the beginning of
RTL unswitching compared to the 4.7 branch.
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug middle-end/52996] [4.8 Regression] ice in verify_loop_structure, at cfgloop.c:1567
2012-04-15 14:59 [Bug c/52996] New: ice in verify_loop_structure, at cfgloop.c:1567 regehr at cs dot utah.edu
` (2 preceding siblings ...)
2012-04-16 10:58 ` rguenth at gcc dot gnu.org
@ 2012-09-07 11:21 ` rguenth at gcc dot gnu.org
2012-11-28 9:30 ` mpolacek at gcc dot gnu.org
` (9 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-09-07 11:21 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52996
Richard Guenther <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P1
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug middle-end/52996] [4.8 Regression] ice in verify_loop_structure, at cfgloop.c:1567
2012-04-15 14:59 [Bug c/52996] New: ice in verify_loop_structure, at cfgloop.c:1567 regehr at cs dot utah.edu
` (3 preceding siblings ...)
2012-09-07 11:21 ` rguenth at gcc dot gnu.org
@ 2012-11-28 9:30 ` mpolacek at gcc dot gnu.org
2012-12-20 13:38 ` mpolacek at gcc dot gnu.org
` (8 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: mpolacek at gcc dot gnu.org @ 2012-11-28 9:30 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52996
Marek Polacek <mpolacek at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |mpolacek at gcc dot gnu.org
AssignedTo|rguenth at gcc dot gnu.org |mpolacek at gcc dot gnu.org
--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> 2012-11-28 09:30:09 UTC ---
Reassigning.
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug middle-end/52996] [4.8 Regression] ice in verify_loop_structure, at cfgloop.c:1567
2012-04-15 14:59 [Bug c/52996] New: ice in verify_loop_structure, at cfgloop.c:1567 regehr at cs dot utah.edu
` (4 preceding siblings ...)
2012-11-28 9:30 ` mpolacek at gcc dot gnu.org
@ 2012-12-20 13:38 ` mpolacek at gcc dot gnu.org
2012-12-21 10:31 ` rguenth at gcc dot gnu.org
` (7 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: mpolacek at gcc dot gnu.org @ 2012-12-20 13:38 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52996
--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> 2012-12-20 13:37:47 UTC ---
The issue here is that when unswitching, we create this new bb:
;; basic block 19, loop depth 0, count 0, freq 14, maybe hot
;; prev block 20, next block 1, flags: (NEW, RTL, MODIFIED)
;; pred: 18 [2.2%]
;; succ: 8 [100.0%] (FALLTHRU)
its loop depth should be 1, not 0.
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug middle-end/52996] [4.8 Regression] ice in verify_loop_structure, at cfgloop.c:1567
2012-04-15 14:59 [Bug c/52996] New: ice in verify_loop_structure, at cfgloop.c:1567 regehr at cs dot utah.edu
` (5 preceding siblings ...)
2012-12-20 13:38 ` mpolacek at gcc dot gnu.org
@ 2012-12-21 10:31 ` rguenth at gcc dot gnu.org
2012-12-21 10:33 ` rguenth at gcc dot gnu.org
` (6 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-12-21 10:31 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52996
--- Comment #5 from Richard Biener <rguenth at gcc dot gnu.org> 2012-12-21 10:30:54 UTC ---
It no longer reproduces for me ... we no longer unswitch. But the issue
is certainly latent.
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug middle-end/52996] [4.8 Regression] ice in verify_loop_structure, at cfgloop.c:1567
2012-04-15 14:59 [Bug c/52996] New: ice in verify_loop_structure, at cfgloop.c:1567 regehr at cs dot utah.edu
` (6 preceding siblings ...)
2012-12-21 10:31 ` rguenth at gcc dot gnu.org
@ 2012-12-21 10:33 ` rguenth at gcc dot gnu.org
2012-12-21 10:33 ` rguenth at gcc dot gnu.org
` (5 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-12-21 10:33 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52996
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |ice-checking
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
--- Comment #7 from Richard Biener <rguenth at gcc dot gnu.org> 2012-12-21 10:33:31 UTC ---
Fixed for this testcase.
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug middle-end/52996] [4.8 Regression] ice in verify_loop_structure, at cfgloop.c:1567
2012-04-15 14:59 [Bug c/52996] New: ice in verify_loop_structure, at cfgloop.c:1567 regehr at cs dot utah.edu
` (7 preceding siblings ...)
2012-12-21 10:33 ` rguenth at gcc dot gnu.org
@ 2012-12-21 10:33 ` rguenth at gcc dot gnu.org
2012-12-21 12:32 ` jakub at gcc dot gnu.org
` (4 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-12-21 10:33 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52996
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> 2012-12-21 10:32:51 UTC ---
Author: rguenth
Date: Fri Dec 21 10:32:43 2012
New Revision: 194659
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=194659
Log:
2012-12-21 Richard Biener <rguenther@suse.de>
PR tree-optimization/52996
* gcc.dg/torture/pr52996.c: New testcase.
Added:
trunk/gcc/testsuite/gcc.dg/torture/pr52996.c
Modified:
trunk/gcc/testsuite/ChangeLog
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug middle-end/52996] [4.8 Regression] ice in verify_loop_structure, at cfgloop.c:1567
2012-04-15 14:59 [Bug c/52996] New: ice in verify_loop_structure, at cfgloop.c:1567 regehr at cs dot utah.edu
` (8 preceding siblings ...)
2012-12-21 10:33 ` rguenth at gcc dot gnu.org
@ 2012-12-21 12:32 ` jakub at gcc dot gnu.org
2012-12-21 12:48 ` rguenth at gcc dot gnu.org
` (3 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: jakub at gcc dot gnu.org @ 2012-12-21 12:32 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52996
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |REOPENED
CC| |jakub at gcc dot gnu.org
Resolution|FIXED |
--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-12-21 12:31:47 UTC ---
The testcase fails on i686-linux:
/usr/src/gcc/obj479/gcc/xgcc -B/usr/src/gcc/obj479/gcc/
/usr/src/gcc/gcc/testsuite/gcc.dg/torture/pr52996.c -fno-diagnostics-show-caret
-O2 -funswitch-loops -S -o pr52996.s
/usr/src/gcc/gcc/testsuite/gcc.dg/torture/pr52996.c: In function 'fn1':
/usr/src/gcc/gcc/testsuite/gcc.dg/torture/pr52996.c:32:1: error: edge from 18
to 19 should be marked irreducible
/usr/src/gcc/gcc/testsuite/gcc.dg/torture/pr52996.c:32:1: error: basic block 19
should be marked irreducible
/usr/src/gcc/gcc/testsuite/gcc.dg/torture/pr52996.c:32:1: error: edge from 19
to 8 should be marked irreducible
/usr/src/gcc/gcc/testsuite/gcc.dg/torture/pr52996.c:32:1: internal compiler
error: in verify_loop_structure, at cfgloop.c:1582
0x82eec96 verify_loop_structure()
../../gcc/cfgloop.c:1582
0x856db5d unswitch_loops()
../../gcc/loop-unswitch.c:151
0x8558640 rtl_unswitch
../../gcc/loop-init.c:336
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
FAIL: gcc.dg/torture/pr52996.c -O2 (internal compiler error)
FAIL: gcc.dg/torture/pr52996.c -O2 (test for excess errors)
FAIL: gcc.dg/torture/pr52996.c -O3 -fomit-frame-pointer (internal compiler
error)
FAIL: gcc.dg/torture/pr52996.c -O3 -fomit-frame-pointer (test for excess
errors)
FAIL: gcc.dg/torture/pr52996.c -O3 -fomit-frame-pointer -funroll-loops
(internal compiler error)
FAIL: gcc.dg/torture/pr52996.c -O3 -fomit-frame-pointer -funroll-loops (test
for excess errors)
FAIL: gcc.dg/torture/pr52996.c -O3 -fomit-frame-pointer -funroll-all-loops
-finline-functions (internal compiler error)
FAIL: gcc.dg/torture/pr52996.c -O3 -fomit-frame-pointer -funroll-all-loops
-finline-functions (test for excess errors)
FAIL: gcc.dg/torture/pr52996.c -O3 -g (internal compiler error)
FAIL: gcc.dg/torture/pr52996.c -O3 -g (test for excess errors)
FAIL: gcc.dg/torture/pr52996.c -O2 -flto -flto-partition=none (internal
compiler error)
FAIL: gcc.dg/torture/pr52996.c -O2 -flto -flto-partition=none (test for
excess errors)
FAIL: gcc.dg/torture/pr52996.c -O2 -flto (internal compiler error)
FAIL: gcc.dg/torture/pr52996.c -O2 -flto (test for excess errors)
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug middle-end/52996] [4.8 Regression] ice in verify_loop_structure, at cfgloop.c:1567
2012-04-15 14:59 [Bug c/52996] New: ice in verify_loop_structure, at cfgloop.c:1567 regehr at cs dot utah.edu
` (9 preceding siblings ...)
2012-12-21 12:32 ` jakub at gcc dot gnu.org
@ 2012-12-21 12:48 ` rguenth at gcc dot gnu.org
2012-12-21 12:56 ` rguenth at gcc dot gnu.org
` (2 subsequent siblings)
13 siblings, 0 replies; 15+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-12-21 12:48 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52996
--- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> 2012-12-21 12:47:54 UTC ---
Ick, I had
Index: gcc/cprop.c
===================================================================
--- gcc/cprop.c (revision 194658)
+++ gcc/cprop.c (working copy)
@@ -1554,8 +1554,7 @@ bypass_block (basic_block bb, rtx setcc,
/* The irreducible loops created by redirecting of edges entering the
loop from outside would decrease effectiveness of some of the
following optimizations, so prevent this. */
- if (may_be_loop_header
- && !(e->flags & EDGE_DFS_BACK))
+ if (may_be_loop_header)
{
ei_next (&ei);
continue;
in my tree ...
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug middle-end/52996] [4.8 Regression] ice in verify_loop_structure, at cfgloop.c:1567
2012-04-15 14:59 [Bug c/52996] New: ice in verify_loop_structure, at cfgloop.c:1567 regehr at cs dot utah.edu
` (10 preceding siblings ...)
2012-12-21 12:48 ` rguenth at gcc dot gnu.org
@ 2012-12-21 12:56 ` rguenth at gcc dot gnu.org
2012-12-21 14:34 ` rguenth at gcc dot gnu.org
2012-12-21 14:35 ` rguenth at gcc dot gnu.org
13 siblings, 0 replies; 15+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-12-21 12:56 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52996
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|REOPENED |ASSIGNED
AssignedTo|mpolacek at gcc dot gnu.org |rguenth at gcc dot gnu.org
--- Comment #10 from Richard Biener <rguenth at gcc dot gnu.org> 2012-12-21 12:55:59 UTC ---
let me take it - bypassing of a loop header is never a good idea unless you
want to jump through hoops as the gimple threading code does.
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug middle-end/52996] [4.8 Regression] ice in verify_loop_structure, at cfgloop.c:1567
2012-04-15 14:59 [Bug c/52996] New: ice in verify_loop_structure, at cfgloop.c:1567 regehr at cs dot utah.edu
` (11 preceding siblings ...)
2012-12-21 12:56 ` rguenth at gcc dot gnu.org
@ 2012-12-21 14:34 ` rguenth at gcc dot gnu.org
2012-12-21 14:35 ` rguenth at gcc dot gnu.org
13 siblings, 0 replies; 15+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-12-21 14:34 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52996
--- Comment #11 from Richard Biener <rguenth at gcc dot gnu.org> 2012-12-21 14:34:08 UTC ---
Author: rguenth
Date: Fri Dec 21 14:33:59 2012
New Revision: 194666
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=194666
Log:
2012-12-21 Richard Biener <rguenther@suse.de>
PR rtl-optimization/52996
* cprop.c (bypass_block): When loops are to be preserved
do not bypass loop headers. Revert earlier kludge to remove
loops when doing that.
Modified:
trunk/gcc/ChangeLog
trunk/gcc/cprop.c
^ permalink raw reply [flat|nested] 15+ messages in thread
* [Bug middle-end/52996] [4.8 Regression] ice in verify_loop_structure, at cfgloop.c:1567
2012-04-15 14:59 [Bug c/52996] New: ice in verify_loop_structure, at cfgloop.c:1567 regehr at cs dot utah.edu
` (12 preceding siblings ...)
2012-12-21 14:34 ` rguenth at gcc dot gnu.org
@ 2012-12-21 14:35 ` rguenth at gcc dot gnu.org
13 siblings, 0 replies; 15+ messages in thread
From: rguenth at gcc dot gnu.org @ 2012-12-21 14:35 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52996
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution| |FIXED
--- Comment #12 from Richard Biener <rguenth at gcc dot gnu.org> 2012-12-21 14:35:07 UTC ---
Fixed.
^ permalink raw reply [flat|nested] 15+ messages in thread
end of thread, other threads:[~2012-12-21 14:35 UTC | newest]
Thread overview: 15+ messages (download: mbox.gz / follow: Atom feed)
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2012-04-15 14:59 [Bug c/52996] New: ice in verify_loop_structure, at cfgloop.c:1567 regehr at cs dot utah.edu
2012-04-15 16:11 ` [Bug middle-end/52996] [4.8 Regression] " pinskia at gcc dot gnu.org
2012-04-16 9:33 ` rguenth at gcc dot gnu.org
2012-04-16 10:58 ` rguenth at gcc dot gnu.org
2012-09-07 11:21 ` rguenth at gcc dot gnu.org
2012-11-28 9:30 ` mpolacek at gcc dot gnu.org
2012-12-20 13:38 ` mpolacek at gcc dot gnu.org
2012-12-21 10:31 ` rguenth at gcc dot gnu.org
2012-12-21 10:33 ` rguenth at gcc dot gnu.org
2012-12-21 10:33 ` rguenth at gcc dot gnu.org
2012-12-21 12:32 ` jakub at gcc dot gnu.org
2012-12-21 12:48 ` rguenth at gcc dot gnu.org
2012-12-21 12:56 ` rguenth at gcc dot gnu.org
2012-12-21 14:34 ` rguenth at gcc dot gnu.org
2012-12-21 14:35 ` rguenth at gcc dot gnu.org
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