public inbox for gcc-bugs@sourceware.org
help / color / mirror / Atom feed
* [Bug fortran/11496] New: error in flow_loops_find when -funroll-loops active
@ 2003-07-10 21:16 Remigius dot Mommsen at cern dot ch
2003-07-10 23:52 ` [Bug fortran/11496] " pinskia at physics dot uc dot edu
` (9 more replies)
0 siblings, 10 replies; 11+ messages in thread
From: Remigius dot Mommsen at cern dot ch @ 2003-07-10 21:16 UTC (permalink / raw)
To: gcc-bugs
PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11496
Summary: error in flow_loops_find when -funroll-loops active
Product: gcc
Version: 3.3
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: fortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: Remigius dot Mommsen at cern dot ch
CC: gcc-bugs at gcc dot gnu dot org
GCC host triplet: Mac OS X 10.2
Compiling attached Fortran code crashes g77 v.3.3 if (and only if) -funroll-loops is active.
The error:
g77 -v -save-temps -c -O -funroll-loops -o muller.o muller.F
Reading specs from /sw/lib/gcc-lib/powerpc-apple-darwin6.6/3.3/specs
Configured with: ../gcc-3.3/configure --prefix=/sw --enable-languages=f77 --infodir=${prefix}/
share/info
Thread model: single
gcc version 3.3
/sw/lib/gcc-lib/powerpc-apple-darwin6.6/3.3/cc1 -E -traditional-cpp -D_LANGUAGE_FORTRAN
-quiet -v -D__GNUC__=3 -D__GNUC_MINOR__=3 -D__GNUC_PATCHLEVEL__=0 -D__DYNAMIC__
muller.F -fPIC -funroll-loops -O /var/tmp//ccHGL0ww.f
ignoring nonexistent directory "/usr/local/include"
ignoring nonexistent directory "/sw/powerpc-apple-darwin6.6/include"
#include "..." search starts here:
#include <...> search starts here:
/sw/include
/sw/lib/gcc-lib/powerpc-apple-darwin6.6/3.3/include
/usr/include
End of search list.
/sw/lib/gcc-lib/powerpc-apple-darwin6.6/3.3/f771 /var/tmp//ccHGL0ww.f -fPIC -quiet -
dumpbase muller.F -auxbase-strip muller.o -O -version -funroll-loops -o muller.s
GNU F77 version 3.3 (powerpc-apple-darwin6.6)
compiled by GNU C version 3.3.
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
muller.F: In subroutine `muller':
muller.F:185: internal compiler error: in flow_loops_find, at cfgloop.c:830
The fortran file which produces the error:
*
* $Id: muller.F,v 1.1.1.1 1996/02/15 17:48:47 mclareni Exp $
*
* $Log: muller.F,v $
* Revision 1.1.1.1 1996/02/15 17:48:47 mclareni
* Kernlib
*
*
SUBROUTINE MULLER (A,N,C)
C
C MODIFIED TO ELIMINATE STOP AND AVOID COMPILER DIAGNOSTICS
C DUE TO ASSIGNED GOTO INTO DO 17. H.LIPPS, 30.6.1982.
C
C-----COMPUTES ROOTS OF POLYNOMIAL A(1)*X**N+...A(N)*X+A(N+1) = 0.
C BY METHOD OF D.E.MULLER,M.T.A.C.,VOL 10, P208-215 (1956).
C DURING EXECUTION THE ARRAY C CONTAINS SCALED,COMPLEX POLYNOMIAL
C COEFFICIENTS.AFTER EXECUTION IT CONTAINS COMPLEX ROOTS.
C THE FOLLOWING ARE DUMMY ARRAY DIMENSIONS
DIMENSION A(9),C(9)
COMPLEX C,DX,X,X3,Y1,Y2,Y,TE1,TE2,TE3,TE4,TE5,TE6,TE7
LOGICAL MFLAG, RFLAG
DATA ETA1/1.E-6/,ETA2/1.E-3/
SUMABS(X)=ABS(REAL(X))+ABS(AIMAG(X))
IF(N .LT. 1) THEN
CALL KERMTR('C204.1',LGFILE,MFLAG,RFLAG)
IF(MFLAG) THEN
IF(LGFILE .EQ. 0) THEN
WRITE(*,1000) N
ELSE
WRITE(LGFILE,1000) N
ENDIF
ENDIF
IF(.NOT. RFLAG) CALL ABEND
RETURN
ENDIF
IF(A(1).EQ.0.) GO TO 105
C
C-----EXTRACT ALL ZERO ROOTS
N1=N
2 IF(N1.EQ.1) GO TO 3
IF(A(N1+1).NE.0.) GO TO 5
C(N1)=0.
N1=N1-1
GO TO 2
3 C(1)=-A(2)/A(1)
RETURN
C
C-----NORMALIZE AND SCALE DOWN POLYNOMIAL TO MAKE COEFF.C(0)=C(N1)= 1.
5 B=1./FLOAT(N1)
SCALE=ABS(A(N1+1))**B/ABS(A(1))**B
B=A(1)
DO 6 I=1,N1
B=B*SCALE
6 C(I)=A(I+1)/B
IF(N1.EQ.2) GO TO 104
C
C-----STARTING VALUES AT X1=+1, X2=-1, X=0.
10 ASSIGN 20 TO L
Y1=C(1)+1.
Y2=C(1)-1.
DO 11 I=2,N1
Y1=C(I)+Y1
11 Y2=C(I)-Y2
Y=C(N1)
X=0.
DX=1.
C
C-----MULLER"S ITERATION
TE1=-2.
12 TE2=Y2/Y
TE3=(Y1-Y2)/(Y*TE1)
DO 17 ITER=1,2000
TE4=TE2-1.
TE5=(TE4-TE3)/(TE1+1.)
TE6=(TE5+TE4)*.5
TE7=SQRT(TE6*TE6+TE5)
TE1=TE6+TE7
TE7=TE6-TE7
B=REAL(TE7)**2+AIMAG(TE7)**2
IF(REAL(TE1)**2+AIMAG(TE1)**2.GT.B) GO TO 13
IF(B.EQ.0.) TE7=.9
TE1=TE7
13 DX=DX/TE1
X=DX+X
EPSI=SUMABS(X)*ETA1
IF(SUMABS(DX).GE.EPSI) GO TO 14
IF(SUMABS(Y).LT.2.E-3) GO TO 18
14 Y2=Y
GO TO 199
C
15 IF(YA.LT.100.*SUMABS(Y2)) GO TO 16
IF(SUMABS(DX).LT.EPSI) GO TO 16
C
C-----REDUCE EXCESSIVE STEP SIZE DX,PREVENT OVERFLOW IN POLYN.EVALUATION
TE1=TE1+TE1
DX=.5*DX
X=X-DX
C
C-----EVALUATE POLYNOMIAL AND TEST ZERO.
199 Y=X+C(1)
DO 200 I=2,N1
200 Y=Y*X+C(I)
YA=SUMABS(Y)
IF(YA.EQ.0.) GO TO 18
GOTO 15
C
16 TE2=Y2/Y
17 TE3=TE2/TE1*TE4
C-----SCALE DEFLATED POLYNOMIAL
CN=CABS(C(N1))
IF (ABS(CN-1.).LT.0.1) GO TO 35
S=CN**(1./FLOAT(N1))
SCALE=SCALE*S
B=1.
DO 30 I=1,N1
B=B/S
30 C(I)=C(I)*B
GO TO 10
C-----IF ROOT CANNOT BE FOUND IN 2000 ITERATIONS PRINT ERROR MESSAGE
35 IMIN=N1+1
DO 40 I=1,N1
40 C(I)=1.E20
IMAX=N+1
CALL KERMTR('C204.3',LGFILE,MFLAG,RFLAG)
IF(MFLAG) THEN
IF(LGFILE .EQ. 0) THEN
WRITE(*,1003) (A(I),I=1,IMAX)
IF(N1 .LT. N) WRITE(*,1004) (C(I),I=IMIN,N)
ELSE
WRITE(LGFILE,1003) (A(I),I=1,IMAX)
IF(N1 .LT. N) WRITE(LGFILE,1004) (C(I),I=IMIN,N)
ENDIF
ENDIF
IF(.NOT. RFLAG) CALL ABEND
RETURN
C
C-----IF ROOT IS COMPLEX,START ITERATION NEAR CONJUGATE ROOT(HIGH PREC.)
20 IF(ABS(AIMAG(X)).LT.ABS(REAL(X))*ETA2) GO TO 10
ASSIGN 10 TO L
X3=CONJG(X)
DX=CONJG(DX)
TE1=CONJG(TE1)
X=X3-DX
ASSIGN 21 TO M
GO TO 99
21 Y2=Y
X=X-DX*TE1
ASSIGN 22 TO M
GO TO 99
22 Y1=Y
X=X3
ASSIGN 12 TO M
GO TO 99
C
C-----EVALUATE POLYNOMIAL AND TEST ZERO.
99 Y=X+C(1)
DO 100 I=2,N1
100 Y=Y*X+C(I)
YA=SUMABS(Y)
IF(YA.NE.0.) GO TO M,(12,21,22)
C
C-----IF A ROOT IS FOUND REDUCE DEGREE OF POLYNOMIAL(DEFLATION)
18 C(N1)=X*SCALE
N1=N1-1
C(1)=X+C(1)
DO 19 I=2,N1
19 C(I)=C(I-1)*X+C(I)
IF(N1.GT.2) GO TO L,(10,20)
C
C-----SOLVE QUADRATIC EQUATION AND RETURN
104 TE6=.5*C(1)
C(2)=(CSQRT(TE6*TE6-C(2))-TE6)*SCALE
C(1)=-C(1)*SCALE-C(2)
RETURN
105 IMAX=N+1
CALL KERMTR('C204.2',LGFILE,MFLAG,RFLAG)
IF(MFLAG) THEN
IF(LGFILE .EQ. 0) THEN
WRITE(*,1001) (A(I),I=1,IMAX)
ELSE
WRITE(LGFILE,1001) (A(I),I=1,IMAX)
ENDIF
ENDIF
IF(.NOT. RFLAG) CALL ABEND
RETURN
C
1000 FORMAT( 7X, 'SUBROUTINE MULLER ... THE DEGREE N OF THE ',
+ 'POLYNOMIAL =', I6, ' IS LESS THAN 1.')
1001 FORMAT( 7X, 'SUBROUTINE MULLER ...'/' THE POLYNOMIAL ',
1'CANNOT HAVE N ROOTS BECAUSE THE COEFFICIENT OF Z**N (FIRST ',
2'COEFFICIENT ) IS ZERO. THE COEFFICIENTS ARE'/(1H0,8G14.6))
1003 FORMAT( 7X, 'SUBROUTINE MULLER ... ',' ROOT CANNOT BE FOUND ',
1'WITH 2000 ITERATIONS'/' REVERSE THE SEQUENCE OF COEFFICIENTS ',
2' A(N+1)...A(1) AND CALL MULLER AGAIN TO COMPUTE 1/ROOT.' /
3 ' THE COEFFICIENTS ARE' //(1H0,8G14.6))
1004 FORMAT(41H0ONLY THE FOLLOWING ROOTS HAVE BEEN FOUND//(2H (,E20.13,
11H, ,3X,E20.13,1H) ))
END
The error does not occure
- if you ommit the -funroll-loops or -O
- if you use g77 3.1
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug fortran/11496] error in flow_loops_find when -funroll-loops active
2003-07-10 21:16 [Bug fortran/11496] New: error in flow_loops_find when -funroll-loops active Remigius dot Mommsen at cern dot ch
2003-07-10 23:52 ` [Bug fortran/11496] " pinskia at physics dot uc dot edu
@ 2003-07-10 23:52 ` pinskia at physics dot uc dot edu
2003-07-11 0:00 ` pinskia at physics dot uc dot edu
` (7 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: pinskia at physics dot uc dot edu @ 2003-07-10 23:52 UTC (permalink / raw)
To: gcc-bugs
PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11496
pinskia at physics dot uc dot edu changed:
What |Removed |Added
----------------------------------------------------------------------------
GCC target triplet| |powerpc-apple-darwin6.6
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug fortran/11496] error in flow_loops_find when -funroll-loops active
2003-07-10 21:16 [Bug fortran/11496] New: error in flow_loops_find when -funroll-loops active Remigius dot Mommsen at cern dot ch
@ 2003-07-10 23:52 ` pinskia at physics dot uc dot edu
2003-07-10 23:52 ` pinskia at physics dot uc dot edu
` (8 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: pinskia at physics dot uc dot edu @ 2003-07-10 23:52 UTC (permalink / raw)
To: gcc-bugs
PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11496
pinskia at physics dot uc dot edu changed:
What |Removed |Added
----------------------------------------------------------------------------
GCC build triplet| |powerpc-apple-darwin6.6
GCC host triplet|Mac OS X 10.2 |powerpc-apple-darwin6.6
Keywords| |ice-on-valid-code
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug fortran/11496] error in flow_loops_find when -funroll-loops active
2003-07-10 21:16 [Bug fortran/11496] New: error in flow_loops_find when -funroll-loops active Remigius dot Mommsen at cern dot ch
2003-07-10 23:52 ` [Bug fortran/11496] " pinskia at physics dot uc dot edu
2003-07-10 23:52 ` pinskia at physics dot uc dot edu
@ 2003-07-11 0:00 ` pinskia at physics dot uc dot edu
2003-07-17 17:24 ` [Bug fortran/11496] [3.3 only] " pinskia at physics dot uc dot edu
` (6 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: pinskia at physics dot uc dot edu @ 2003-07-11 0:00 UTC (permalink / raw)
To: gcc-bugs
PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11496
------- Additional Comments From pinskia at physics dot uc dot edu 2003-07-11 00:00 -------
The unroller has been rewritten for 3.4 and I cannot reproduce it on the mainline
(20030708) but then the unroller is still useless on the mainline for the PowerPC.
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug fortran/11496] [3.3 only] error in flow_loops_find when -funroll-loops active
2003-07-10 21:16 [Bug fortran/11496] New: error in flow_loops_find when -funroll-loops active Remigius dot Mommsen at cern dot ch
` (2 preceding siblings ...)
2003-07-11 0:00 ` pinskia at physics dot uc dot edu
@ 2003-07-17 17:24 ` pinskia at physics dot uc dot edu
2003-07-18 21:21 ` pinskia at physics dot uc dot edu
` (5 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: pinskia at physics dot uc dot edu @ 2003-07-17 17:24 UTC (permalink / raw)
To: gcc-bugs
PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11496
pinskia at physics dot uc dot edu changed:
What |Removed |Added
----------------------------------------------------------------------------
Summary|error in flow_loops_find |[3.3 only] error in
|when -funroll-loops active |flow_loops_find when -
| |funroll-loops active
Target Milestone|3.4 |3.3.2
------- Additional Comments From pinskia at physics dot uc dot edu 2003-07-17 17:24 -------
I had ment to mark this as 3.3 only as I could not reproduce this on the mainline.
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug fortran/11496] [3.3 only] error in flow_loops_find when -funroll-loops active
2003-07-10 21:16 [Bug fortran/11496] New: error in flow_loops_find when -funroll-loops active Remigius dot Mommsen at cern dot ch
` (3 preceding siblings ...)
2003-07-17 17:24 ` [Bug fortran/11496] [3.3 only] " pinskia at physics dot uc dot edu
@ 2003-07-18 21:21 ` pinskia at physics dot uc dot edu
2003-07-18 21:33 ` [Bug optimization/11496] [3.3 Regression] " pinskia at physics dot uc dot edu
` (4 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: pinskia at physics dot uc dot edu @ 2003-07-18 21:21 UTC (permalink / raw)
To: gcc-bugs
PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11496
pinskia at physics dot uc dot edu changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed| |1
Last reconfirmed|0000-00-00 00:00:00 |2003-07-18 21:21:33
date| |
------- Additional Comments From pinskia at physics dot uc dot edu 2003-07-18 21:21 -------
I can confirm this in 3.3.1 (20030714). I have not checked other versions yet.
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug optimization/11496] [3.3 Regression] error in flow_loops_find when -funroll-loops active
2003-07-10 21:16 [Bug fortran/11496] New: error in flow_loops_find when -funroll-loops active Remigius dot Mommsen at cern dot ch
` (4 preceding siblings ...)
2003-07-18 21:21 ` pinskia at physics dot uc dot edu
@ 2003-07-18 21:33 ` pinskia at physics dot uc dot edu
2003-08-05 18:09 ` janis187 at us dot ibm dot com
` (3 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: pinskia at physics dot uc dot edu @ 2003-07-18 21:33 UTC (permalink / raw)
To: gcc-bugs
PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11496
pinskia at physics dot uc dot edu changed:
What |Removed |Added
----------------------------------------------------------------------------
GCC target triplet|powerpc-apple-darwin6.6 |powerpc-apple-darwin*
Summary|[3.3 only] error in |[3.3 Regression] error in
|flow_loops_find when - |flow_loops_find when -
|funroll-loops active |funroll-loops active
------- Additional Comments From pinskia at physics dot uc dot edu 2003-07-18 21:33 -------
I just tried it in 3.2.3, it compiled just fine so this is a regression.
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug optimization/11496] [3.3 Regression] error in flow_loops_find when -funroll-loops active
2003-07-10 21:16 [Bug fortran/11496] New: error in flow_loops_find when -funroll-loops active Remigius dot Mommsen at cern dot ch
` (5 preceding siblings ...)
2003-07-18 21:33 ` [Bug optimization/11496] [3.3 Regression] " pinskia at physics dot uc dot edu
@ 2003-08-05 18:09 ` janis187 at us dot ibm dot com
2003-10-16 17:09 ` mmitchel at gcc dot gnu dot org
` (2 subsequent siblings)
9 siblings, 0 replies; 11+ messages in thread
From: janis187 at us dot ibm dot com @ 2003-08-05 18:09 UTC (permalink / raw)
To: gcc-bugs
PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11496
janis187 at us dot ibm dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rth at redhat dot com, jh at
| |suse dot cz
------- Additional Comments From janis187 at us dot ibm dot com 2003-08-05 18:09 -------
The regression in PR 11496 was introduced or exposed by this patch:
--- gcc/gcc/ChangeLog ---
Wed Jul 18 18:46:30 CEST 2001 Richard Henderson <rth@cygnus.com>
Jan Hubicka <jh@suse.cz>
* flow.c (redirect_edge_and_branch): Bail out on complex edges.
(try_optimize_cfg): Do not remove tail recursive labels before sibcall.
* jump.c (mark_jump_label): Do not forward branches.
The regression hunt took place on i686-pc-linux-gnu using a native
compiler (the bug isn't specific to powerpc) to compile the submitter's
test case with "-O2 -funroll-loops".
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug optimization/11496] [3.3 Regression] error in flow_loops_find when -funroll-loops active
2003-07-10 21:16 [Bug fortran/11496] New: error in flow_loops_find when -funroll-loops active Remigius dot Mommsen at cern dot ch
` (6 preceding siblings ...)
2003-08-05 18:09 ` janis187 at us dot ibm dot com
@ 2003-10-16 17:09 ` mmitchel at gcc dot gnu dot org
2003-12-08 20:08 ` janis187 at us dot ibm dot com
2003-12-09 11:31 ` roger at eyesopen dot com
9 siblings, 0 replies; 11+ messages in thread
From: mmitchel at gcc dot gnu dot org @ 2003-10-16 17:09 UTC (permalink / raw)
To: gcc-bugs
PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11496
mmitchel at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Target Milestone|3.3.2 |3.3.3
------- Additional Comments From mmitchel at gcc dot gnu dot org 2003-10-16 17:09 -------
Postponed until GCC 3.3.3.
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug optimization/11496] [3.3 Regression] error in flow_loops_find when -funroll-loops active
2003-07-10 21:16 [Bug fortran/11496] New: error in flow_loops_find when -funroll-loops active Remigius dot Mommsen at cern dot ch
` (7 preceding siblings ...)
2003-10-16 17:09 ` mmitchel at gcc dot gnu dot org
@ 2003-12-08 20:08 ` janis187 at us dot ibm dot com
2003-12-09 11:31 ` roger at eyesopen dot com
9 siblings, 0 replies; 11+ messages in thread
From: janis187 at us dot ibm dot com @ 2003-12-08 20:08 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From janis187 at us dot ibm dot com 2003-12-08 20:08 -------
The regression reported in PR 11496 still exists on the 3.3-branch, but
its test case passes for mainline starting with this patch:
2003-03-08 Zdenek Dvorak <rakdver@atrey.karlin.mff.cuni.cz>
* gcse.c (bypass_block, bypass_conditional_jumps): Do not create
irreducible loops.
* loop-unroll.c (unroll_loop_runtime_iterations): Update irreducible
loops info correctly.
Roger Sayle asked me to run this regression hunt, which took place on
i686-pc-linux-gnu using the same test as the hunt that found the breakage,
to determine whether a fix can be ported to the branch.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11496
^ permalink raw reply [flat|nested] 11+ messages in thread
* [Bug optimization/11496] [3.3 Regression] error in flow_loops_find when -funroll-loops active
2003-07-10 21:16 [Bug fortran/11496] New: error in flow_loops_find when -funroll-loops active Remigius dot Mommsen at cern dot ch
` (8 preceding siblings ...)
2003-12-08 20:08 ` janis187 at us dot ibm dot com
@ 2003-12-09 11:31 ` roger at eyesopen dot com
9 siblings, 0 replies; 11+ messages in thread
From: roger at eyesopen dot com @ 2003-12-09 11:31 UTC (permalink / raw)
To: gcc-bugs
------- Additional Comments From roger at eyesopen dot com 2003-12-09 11:31 -------
Very many thanks to Janice for identifing the patch to the 3.3 branch that
appears to have resolved this issue:
2003-10-03 Zdenek Dvorak <rakdver@atrey.karlin.mff.cuni.cz>
PR/11883
* cfgloop.c (flow_loops_find): Fix handling of abnormal edges.
Given that PR optimization/11883 was also an ICE in flow_loops_find, it looks
like this problem was a duplicate, and was correctly fixed by Zdenek's change.
Given I'm currently unable to reproduce this failure against either the current
3.3 branch or mainline (though I can with gcc 3.3.1), I'm closing this PR as
fixed resolved. Many thanks again to Zdenek and Janice.
--
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |FIXED
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11496
^ permalink raw reply [flat|nested] 11+ messages in thread
end of thread, other threads:[~2003-12-09 11:31 UTC | newest]
Thread overview: 11+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2003-07-10 21:16 [Bug fortran/11496] New: error in flow_loops_find when -funroll-loops active Remigius dot Mommsen at cern dot ch
2003-07-10 23:52 ` [Bug fortran/11496] " pinskia at physics dot uc dot edu
2003-07-10 23:52 ` pinskia at physics dot uc dot edu
2003-07-11 0:00 ` pinskia at physics dot uc dot edu
2003-07-17 17:24 ` [Bug fortran/11496] [3.3 only] " pinskia at physics dot uc dot edu
2003-07-18 21:21 ` pinskia at physics dot uc dot edu
2003-07-18 21:33 ` [Bug optimization/11496] [3.3 Regression] " pinskia at physics dot uc dot edu
2003-08-05 18:09 ` janis187 at us dot ibm dot com
2003-10-16 17:09 ` mmitchel at gcc dot gnu dot org
2003-12-08 20:08 ` janis187 at us dot ibm dot com
2003-12-09 11:31 ` roger at eyesopen dot com
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).