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* [Bug middle-end/36983] New: Trunk 138207 miscompiles 172.mgrid on x86-64
@ 2008-07-31 8:57 Joey dot ye at intel dot com
2008-07-31 9:21 ` [Bug middle-end/36983] " rguenth at gcc dot gnu dot org
` (10 more replies)
0 siblings, 11 replies; 12+ messages in thread
From: Joey dot ye at intel dot com @ 2008-07-31 8:57 UTC (permalink / raw)
To: gcc-bugs
$ cat mgrid.f
SUBROUTINE RESID(U,V,R,N,A)
INTEGER N
REAL*8 U(N,N,N),V(N,N,N),R(N,N,N),A(0:3)
INTEGER I3, I2, I1
DO 600 I3=2,N-1
DO 600 I2=2,N-1
DO 600 I1=2,N-1
600 R(I1,I2,I3)=V(I1,I2,I3)
> -A(0)*( U(I1, I2, I3 ) )
> -A(1)*( U(I1-1,I2, I3 ) + U(I1+1,I2, I3 )
> + U(I1, I2-1,I3 ) + U(I1, I2+1,I3 )
> + U(I1, I2, I3-1) + U(I1, I2, I3+1) )
> -A(2)*( U(I1-1,I2-1,I3 ) + U(I1+1,I2-1,I3 )
> + U(I1-1,I2+1,I3 ) + U(I1+1,I2+1,I3 )
> + U(I1, I2-1,I3-1) + U(I1, I2+1,I3-1)
> + U(I1, I2-1,I3+1) + U(I1, I2+1,I3+1)
> + U(I1-1,I2, I3-1) + U(I1-1,I2, I3+1)
> + U(I1+1,I2, I3-1) + U(I1+1,I2, I3+1) )
> -A(3)*( U(I1-1,I2-1,I3-1) + U(I1+1,I2-1,I3-1)
> + U(I1-1,I2+1,I3-1) + U(I1+1,I2+1,I3-1)
> + U(I1-1,I2-1,I3+1) + U(I1+1,I2-1,I3+1)
> + U(I1-1,I2+1,I3+1) + U(I1+1,I2+1,I3+1) )
RETURN
END
$ gfortran -v
Using built-in specs.
Target: x86_64-unknown-linux-gnu
Configured with: ../src/configure --prefix=/home/jye2/rrs/138207/usr
--enable-languages=c,c++,fortran --disable-bootstrap
Thread model: posix
gcc version 4.4.0 20080728 (experimental) [trunk revision 138207] (GCC)
$ gfortran -O3 -ffast-math mgrid.f -c
mgrid.f: In function 'resid':
mgrid.f:1: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
$ gfortran -v
Using built-in specs.
Target: x86_64-unknown-linux-gnu
Configured with: ../src/configure --prefix=/home/jye2/rrs/138206/usr
--enable-languages=c,c++,fortran --disable-bootstrap
Thread model: posix
gcc version 4.4.0 20080728 (experimental) [trunk revision 138206] (GCC)
$ gfortran -O3 -ffast-math mgrid.f -c
$
--
Summary: Trunk 138207 miscompiles 172.mgrid on x86-64
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: Joey dot ye at intel dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36983
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug middle-end/36983] Trunk 138207 miscompiles 172.mgrid on x86-64
2008-07-31 8:57 [Bug middle-end/36983] New: Trunk 138207 miscompiles 172.mgrid on x86-64 Joey dot ye at intel dot com
@ 2008-07-31 9:21 ` rguenth at gcc dot gnu dot org
2008-07-31 10:52 ` Joey dot ye at intel dot com
` (9 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2008-07-31 9:21 UTC (permalink / raw)
To: gcc-bugs
------- Comment #1 from rguenth at gcc dot gnu dot org 2008-07-31 09:19 -------
Works for me. Very likely a dup of PR36967.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
CC|richard dot guenther at |rguenth at gcc dot gnu dot
|gmail dot com |org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36983
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug middle-end/36983] Trunk 138207 miscompiles 172.mgrid on x86-64
2008-07-31 8:57 [Bug middle-end/36983] New: Trunk 138207 miscompiles 172.mgrid on x86-64 Joey dot ye at intel dot com
2008-07-31 9:21 ` [Bug middle-end/36983] " rguenth at gcc dot gnu dot org
@ 2008-07-31 10:52 ` Joey dot ye at intel dot com
2008-08-07 7:57 ` Joey dot ye at intel dot com
` (8 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: Joey dot ye at intel dot com @ 2008-07-31 10:52 UTC (permalink / raw)
To: gcc-bugs
------- Comment #2 from Joey dot ye at intel dot com 2008-07-31 10:50 -------
Yes. Just notice that latest trunk passes.
--
Joey dot ye at intel dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36983
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug middle-end/36983] Trunk 138207 miscompiles 172.mgrid on x86-64
2008-07-31 8:57 [Bug middle-end/36983] New: Trunk 138207 miscompiles 172.mgrid on x86-64 Joey dot ye at intel dot com
2008-07-31 9:21 ` [Bug middle-end/36983] " rguenth at gcc dot gnu dot org
2008-07-31 10:52 ` Joey dot ye at intel dot com
@ 2008-08-07 7:57 ` Joey dot ye at intel dot com
2008-08-11 0:20 ` pinskia at gcc dot gnu dot org
` (7 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: Joey dot ye at intel dot com @ 2008-08-07 7:57 UTC (permalink / raw)
To: gcc-bugs
------- Comment #3 from Joey dot ye at intel dot com 2008-08-07 07:55 -------
Although 138318 fixes the compiler ICE, it miscompile with -O3 -ffast-math on
x86-64:
Running 172.mgrid ref base o3 default
*** Miscompare of mgrid.out, see
/home/jye2/cpu2000/benchspec/CFP2000/172.mgrid/run/00000003/mgrid.out.mis
No small case available yet
--
Joey dot ye at intel dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |UNCONFIRMED
Resolution|FIXED |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36983
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug middle-end/36983] Trunk 138207 miscompiles 172.mgrid on x86-64
2008-07-31 8:57 [Bug middle-end/36983] New: Trunk 138207 miscompiles 172.mgrid on x86-64 Joey dot ye at intel dot com
` (2 preceding siblings ...)
2008-08-07 7:57 ` Joey dot ye at intel dot com
@ 2008-08-11 0:20 ` pinskia at gcc dot gnu dot org
2008-08-11 3:30 ` hjl dot tools at gmail dot com
` (6 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: pinskia at gcc dot gnu dot org @ 2008-08-11 0:20 UTC (permalink / raw)
To: gcc-bugs
------- Comment #4 from pinskia at gcc dot gnu dot org 2008-08-11 00:19 -------
If you remove -ffast-math, does it miscompare?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36983
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug middle-end/36983] Trunk 138207 miscompiles 172.mgrid on x86-64
2008-07-31 8:57 [Bug middle-end/36983] New: Trunk 138207 miscompiles 172.mgrid on x86-64 Joey dot ye at intel dot com
` (3 preceding siblings ...)
2008-08-11 0:20 ` pinskia at gcc dot gnu dot org
@ 2008-08-11 3:30 ` hjl dot tools at gmail dot com
2008-08-11 5:53 ` Joey dot ye at intel dot com
` (5 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: hjl dot tools at gmail dot com @ 2008-08-11 3:30 UTC (permalink / raw)
To: gcc-bugs
------- Comment #5 from hjl dot tools at gmail dot com 2008-08-11 03:29 -------
More info:
1. Revision 138207 introduced ICE.
2. Revision 138318 fixed ICE, but miscompiled mgrid.
3. Revision 138207 + change in revision 138318 also miscompiled mgrid.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36983
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug middle-end/36983] Trunk 138207 miscompiles 172.mgrid on x86-64
2008-07-31 8:57 [Bug middle-end/36983] New: Trunk 138207 miscompiles 172.mgrid on x86-64 Joey dot ye at intel dot com
` (4 preceding siblings ...)
2008-08-11 3:30 ` hjl dot tools at gmail dot com
@ 2008-08-11 5:53 ` Joey dot ye at intel dot com
2008-08-17 15:35 ` hjl dot tools at gmail dot com
` (4 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: Joey dot ye at intel dot com @ 2008-08-11 5:53 UTC (permalink / raw)
To: gcc-bugs
------- Comment #6 from Joey dot ye at intel dot com 2008-08-11 05:52 -------
(In reply to comment #4)
> If you remove -ffast-math, does it miscompare?
Passes without -ffast-math.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36983
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug middle-end/36983] Trunk 138207 miscompiles 172.mgrid on x86-64
2008-07-31 8:57 [Bug middle-end/36983] New: Trunk 138207 miscompiles 172.mgrid on x86-64 Joey dot ye at intel dot com
` (5 preceding siblings ...)
2008-08-11 5:53 ` Joey dot ye at intel dot com
@ 2008-08-17 15:35 ` hjl dot tools at gmail dot com
2008-08-17 16:51 ` rguenth at gcc dot gnu dot org
` (3 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: hjl dot tools at gmail dot com @ 2008-08-17 15:35 UTC (permalink / raw)
To: gcc-bugs
------- Comment #7 from hjl dot tools at gmail dot com 2008-08-17 15:34 -------
Revision 139171 works for me at -O3 -ffast-math on Linux/Intel64.
--
hjl dot tools at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |WORKSFORME
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36983
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug middle-end/36983] [4.4 Regression] Trunk 138207 miscompiles 172.mgrid on x86-64
2008-07-31 8:57 [Bug middle-end/36983] New: Trunk 138207 miscompiles 172.mgrid on x86-64 Joey dot ye at intel dot com
` (7 preceding siblings ...)
2008-08-17 16:51 ` rguenth at gcc dot gnu dot org
@ 2008-08-17 16:51 ` rguenth at gcc dot gnu dot org
2008-08-17 17:17 ` hjl dot tools at gmail dot com
2008-08-22 15:03 ` rguenth at gcc dot gnu dot org
10 siblings, 0 replies; 12+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2008-08-17 16:51 UTC (permalink / raw)
To: gcc-bugs
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|Trunk 138207 miscompiles |[4.4 Regression] Trunk
|172.mgrid on x86-64 |138207 miscompiles 172.mgrid
| |on x86-64
Target Milestone|--- |4.4.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36983
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug middle-end/36983] Trunk 138207 miscompiles 172.mgrid on x86-64
2008-07-31 8:57 [Bug middle-end/36983] New: Trunk 138207 miscompiles 172.mgrid on x86-64 Joey dot ye at intel dot com
` (6 preceding siblings ...)
2008-08-17 15:35 ` hjl dot tools at gmail dot com
@ 2008-08-17 16:51 ` rguenth at gcc dot gnu dot org
2008-08-17 16:51 ` [Bug middle-end/36983] [4.4 Regression] " rguenth at gcc dot gnu dot org
` (2 subsequent siblings)
10 siblings, 0 replies; 12+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2008-08-17 16:51 UTC (permalink / raw)
To: gcc-bugs
------- Comment #8 from rguenth at gcc dot gnu dot org 2008-08-17 16:49 -------
Still broken for me with -O3 -ffast-math -funroll-loops -fpeel-loops.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |UNCONFIRMED
Resolution|WORKSFORME |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36983
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug middle-end/36983] [4.4 Regression] Trunk 138207 miscompiles 172.mgrid on x86-64
2008-07-31 8:57 [Bug middle-end/36983] New: Trunk 138207 miscompiles 172.mgrid on x86-64 Joey dot ye at intel dot com
` (8 preceding siblings ...)
2008-08-17 16:51 ` [Bug middle-end/36983] [4.4 Regression] " rguenth at gcc dot gnu dot org
@ 2008-08-17 17:17 ` hjl dot tools at gmail dot com
2008-08-22 15:03 ` rguenth at gcc dot gnu dot org
10 siblings, 0 replies; 12+ messages in thread
From: hjl dot tools at gmail dot com @ 2008-08-17 17:17 UTC (permalink / raw)
To: gcc-bugs
------- Comment #9 from hjl dot tools at gmail dot com 2008-08-17 17:16 -------
(In reply to comment #8)
> Still broken for me with -O3 -ffast-math -funroll-loops -fpeel-loops.
>
It is the same as PR 35418. My suggestion at
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35418#c8
works for me with -O3 -ffast-math -funroll-loops -fpeel-loops.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36983
^ permalink raw reply [flat|nested] 12+ messages in thread
* [Bug middle-end/36983] [4.4 Regression] Trunk 138207 miscompiles 172.mgrid on x86-64
2008-07-31 8:57 [Bug middle-end/36983] New: Trunk 138207 miscompiles 172.mgrid on x86-64 Joey dot ye at intel dot com
` (9 preceding siblings ...)
2008-08-17 17:17 ` hjl dot tools at gmail dot com
@ 2008-08-22 15:03 ` rguenth at gcc dot gnu dot org
10 siblings, 0 replies; 12+ messages in thread
From: rguenth at gcc dot gnu dot org @ 2008-08-22 15:03 UTC (permalink / raw)
To: gcc-bugs
------- Comment #10 from rguenth at gcc dot gnu dot org 2008-08-22 15:02 -------
*** This bug has been marked as a duplicate of 35418 ***
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution| |DUPLICATE
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36983
^ permalink raw reply [flat|nested] 12+ messages in thread
end of thread, other threads:[~2008-08-22 15:03 UTC | newest]
Thread overview: 12+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2008-07-31 8:57 [Bug middle-end/36983] New: Trunk 138207 miscompiles 172.mgrid on x86-64 Joey dot ye at intel dot com
2008-07-31 9:21 ` [Bug middle-end/36983] " rguenth at gcc dot gnu dot org
2008-07-31 10:52 ` Joey dot ye at intel dot com
2008-08-07 7:57 ` Joey dot ye at intel dot com
2008-08-11 0:20 ` pinskia at gcc dot gnu dot org
2008-08-11 3:30 ` hjl dot tools at gmail dot com
2008-08-11 5:53 ` Joey dot ye at intel dot com
2008-08-17 15:35 ` hjl dot tools at gmail dot com
2008-08-17 16:51 ` rguenth at gcc dot gnu dot org
2008-08-17 16:51 ` [Bug middle-end/36983] [4.4 Regression] " rguenth at gcc dot gnu dot org
2008-08-17 17:17 ` hjl dot tools at gmail dot com
2008-08-22 15:03 ` rguenth at gcc dot gnu dot org
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