[Bug optimization/11054] New: [3.3 regression] [m68k] ICE in reg_overlap_mentioned_p

[Bug optimization/11054] New: [3.3 regression] [m68k] ICE in reg_overlap_mentioned_p

[debian-gcc@lists.debian.org]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11054

           Summary: [3.3 regression] [m68k] ICE in reg_overlap_mentioned_p
           Product: gcc
           Version: 3.3
            Status: UNCONFIRMED
          Severity: critical
          Priority: P2
         Component: optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: debian-gcc@lists.debian.org
                CC: gcc-bugs@gcc.gnu.org
  GCC host triplet: m68k-linux

[forwarded from http://bugs.debian.org/194749]

works with 3.2.3 and HEAD 20030531.

gcc-3.3 fails to build sane-backends 1.0.12-1 on m68k with the
following internal error :

gcc -c -g -O2 -W -Wall -DHAVE_CONFIG_H -I. -I. -I../include -I../include
-DPATH_SANE_CONFIG_DIR=/etc/sane.d -DPATH_SANE_DATA_DIR=/usr/share -DV_MAJOR=1
-DV_MINOR=0 -DBACKEND_NAME=dc25 -DLIBDIR=/usr/lib/sane dc25.c -o dc25.o
dc25.c:213: warning: dereferencing type-punned pointer will break
strict-aliasing rules
dc25.c:310: warning: dereferencing type-punned pointer will break
strict-aliasing rules
dc25.c:323: warning: dereferencing type-punned pointer will break
strict-aliasing rules
dc25.c: In function `get_info':
dc25.c:616: internal compiler error: in reg_overlap_mentioned_p, at rtlanal.c:1543

Building with -O1 or with gcc-3.2 (3.2.3-2) works fine. The same file
compiled with -fPIC gives no error.



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[Bug optimization/11054] [3.3 regression] [m68k] ICE in reg_overlap_mentioned_p

[debian-gcc@lists.debian.org]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11054



------- Additional Comments From debian-gcc@lists.debian.org  2003-06-01 13:52 -------
Created an attachment (id=4124)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=4124&action=view)
preprocessed source




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[Bug optimization/11054] [3.3 regression] [m68k] ICE in reg_overlap_mentioned_p

[dhazeghi@yahoo.com]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11054


dhazeghi@yahoo.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
  GCC build triplet|                            |m68k-linux
 GCC target triplet|                            |m68k-linux
   Last reconfirmed|0000-00-00 00:00:00         |2003-06-02 10:35:20
               date|                            |


------- Additional Comments From dhazeghi@yahoo.com  2003-06-02 10:35 -------
Confirmed on m68k-rtems as well with gcc 3.2.3, 3.3 branch and mainline (20030526).

Dara



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[Bug optimization/11054] [3.3 regression] [m68k] ICE in reg_overlap_mentioned_p

[pinskia@physics.uc.edu]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11054


pinskia@physics.uc.edu changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|3.4                         |3.3.1

[Bug optimization/11054] [3.3 regression] [m68k] ICE in reg_overlap_mentioned_p

[doko at cs dot tu-berlin dot de]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11054



------- Additional Comments From doko at cs dot tu-berlin dot de  2003-06-26 22:06 -------
Subject: Re:  [3.3 regression] [m68k] ICE in reg_overlap_mentioned_p

wilson at tuliptree dot org writes:

> Patch from mainline that fixes bug.
> 
> Here is a patch from mainline that fixes the bug.  I don't have
> access to m68k hardware so I have only tested this on the testcase.
> Since this is already on mainline there is unlikely to be problems
> with it, however, I haven't done the bootstrap test which is needed
> before a checkin, so I haven't checked it in yet.

- the patch fixes the bug on m68k-linux
- bootstrap succeeded on m68k-linux, testsuite still running
- bootstrap and testsuite succeeded on i386-linux, no new regressions.

[Bug optimization/11054] [3.3 regression] [m68k] ICE in reg_overlap_mentioned_p

[cvs-commit at gcc dot gnu dot org]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11054



------- Additional Comments From cvs-commit at gcc dot gnu dot org  2003-06-27 00:51 -------
Subject: Bug 11054

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-3_3-branch
Changes by:	wilson@gcc.gnu.org	2003-06-27 00:50:56

Modified files:
	gcc            : ChangeLog rtlanal.c 

Log message:
	PR optimization/11054
	* rtlanal.c (reg_overlap_mentioned_p): Handle ZERO_EXTRACT
	and SIGN_EXTRACT.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_3-branch&r1=1.16114.2.620&r2=1.16114.2.621
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/rtlanal.c.diff?cvsroot=gcc&only_with_tag=gcc-3_3-branch&r1=1.140.4.5&r2=1.140.4.6

[Bug optimization/11054] [3.3 regression] [m68k] ICE in reg_overlap_mentioned_p

[wilson at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=11054


wilson at gcc dot gnu dot org changed:

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


------- Additional Comments From wilson at gcc dot gnu dot org  2003-06-27 06:58 -------
I checked in the patch on the 3.3 branch.