[Bug middle-end/48712] New: [4.5 Regression] ICE in dfs_enumerate_from, at cfganal.c:1207, with -O3

[Bug middle-end/48712] New: [4.5 Regression] ICE in dfs_enumerate_from, at cfganal.c:1207, with -O3

[danglin at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48712

           Summary: [4.5 Regression] ICE in dfs_enumerate_from, at
                    cfganal.c:1207, with -O3
           Product: gcc
           Version: 4.5.3
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: middle-end
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: danglin@gcc.gnu.org
              Host: hppa2.0w-hp-hpux11.11
            Target: hppa2.0w-hp-hpux11.11
             Build: hppa2.0w-hp-hpux11.11


Running /mnt/gnu/gcc/gcc/gcc/testsuite/g++.dg/torture/dg-torture.exp ...
FAIL: g++.dg/torture/pr42883.C  -O3 -fomit-frame-pointer  (internal compiler
err
or)
FAIL: g++.dg/torture/pr42883.C  -O3 -fomit-frame-pointer  (test for excess
error
s)
FAIL: g++.dg/torture/pr42883.C  -O3 -fomit-frame-pointer -funroll-loops 
(intern
al compiler error)
FAIL: g++.dg/torture/pr42883.C  -O3 -fomit-frame-pointer -funroll-loops  (test
f
or excess errors)
FAIL: g++.dg/torture/pr42883.C  -O3 -fomit-frame-pointer -funroll-all-loops
-fin
line-functions  (internal compiler error)
FAIL: g++.dg/torture/pr42883.C  -O3 -fomit-frame-pointer -funroll-all-loops
-fin
line-functions  (test for excess errors)
FAIL: g++.dg/torture/pr42883.C  -O3 -g  (internal compiler error)
FAIL: g++.dg/torture/pr42883.C  -O3 -g  (test for excess errors)

Executing on host: /mnt/gnu/gcc/objdir-test/gcc/testsuite/g++/../../g++
-B/mnt/g
nu/gcc/objdir-test/gcc/testsuite/g++/../../
/mnt/gnu/gcc/gcc/gcc/testsuite/g++.d
g/torture/pr42883.C  -nostdinc++
-I/mnt/gnu/gcc/objdir/hppa2.0w-hp-hpux11.11/lib
stdc++-v3/include/hppa2.0w-hp-hpux11.11
-I/mnt/gnu/gcc/objdir/hppa2.0w-hp-hpux11
.11/libstdc++-v3/include -I/mnt/gnu/gcc/gcc/libstdc++-v3/libsupc++
-I/mnt/gnu/gc
c/gcc/libstdc++-v3/include/backward
-I/mnt/gnu/gcc/gcc/libstdc++-v3/testsuite/ut
il -fmessage-length=0  -O3 -fomit-frame-pointer    -S  -o pr42883.s    (timeout
= 300)
/mnt/gnu/gcc/gcc/gcc/testsuite/g++.dg/torture/pr42883.C: In function 'void
MakeI
nternalMesh()':
/mnt/gnu/gcc/gcc/gcc/testsuite/g++.dg/torture/pr42883.C:63:1: internal compiler
error: in dfs_enumerate_from, at cfganal.c:1207
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
compiler exited with status 1
output is:
/mnt/gnu/gcc/gcc/gcc/testsuite/g++.dg/torture/pr42883.C: In function 'void
MakeI
nternalMesh()':
/mnt/gnu/gcc/gcc/gcc/testsuite/g++.dg/torture/pr42883.C:63:1: internal compiler
error: in dfs_enumerate_from, at cfganal.c:1207

-bash-3.2$ ./xgcc -B./ -v
Reading specs from ./specs
COLLECT_GCC=./xgcc
COLLECT_LTO_WRAPPER=./lto-wrapper
Target: hppa2.0w-hp-hpux11.11
Configured with: ../gcc/configure --with-gnu-as --with-as=/opt/gnu/bin/as
--enable-shared --with-local-prefix=/opt/gnu --prefix=/nowhere
--with-gmp=/opt/gnu/gcc/gcc-4.6 --enable-threads=posix --enable-debug=no
--disable-nls --disable-lto --without-cloog --without-ppl
--enable-checking=release
--enable-languages=c,c++,objc,fortran,java,ada,obj-c++
Thread model: posix
gcc version 4.5.3 20110420 (prerelease) [gcc-4_5-branch revision 172791] (GCC)

[Bug middle-end/48712] [4.5 Regression] ICE in dfs_enumerate_from, at cfganal.c:1207, with -O3

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48712

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P1
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2011.04.21 14:31:57
         AssignedTo|unassigned at gcc dot       |rguenth at gcc dot gnu.org
                   |gnu.org                     |
   Target Milestone|---                         |4.5.3
     Ever Confirmed|0                           |1

--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-04-21 14:31:57 UTC ---
Seems like PR48000 now hits us on the branch (bah, we should do better with
setting depends/blocks on bugs ...).

I'll backport that rev. 170740

[Bug middle-end/48712] [4.5 Regression] ICE in dfs_enumerate_from, at cfganal.c:1207, with -O3

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48712

--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-04-21 15:51:48 UTC ---
Author: rguenth
Date: Thu Apr 21 15:51:39 2011
New Revision: 172833

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=172833
Log:
2011-04-21  Richard Guenther  <rguenther@suse.de>

    PR middle-end/48712
    Backport from 4.6 branch
    2011-03-07  Zdenek Dvorak  <ook@ucw.cz>

    PR bootstrap/48000
    * cfgloopmanip.c (fix_bb_placements): Return immediately
    if FROM is BASE_LOOP's header.

Modified:
    branches/gcc-4_5-branch/gcc/ChangeLog
    branches/gcc-4_5-branch/gcc/cfgloopmanip.c

[Bug middle-end/48712] [4.5 Regression] ICE in dfs_enumerate_from, at cfganal.c:1207, with -O3

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48712

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED

--- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-04-21 15:52:24 UTC ---
Should be fixed now.