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From: bunk@fs.tum.de
To: gcc-gnats@gcc.gnu.org
Subject: optimization/7810: "gcc-3.2 -Wall -funroll-loops -mcpu=k6 -O1 -c bug.c" causes ICE in extract_insn
Date: Mon, 02 Sep 2002 08:56:00 -0000 [thread overview]
Message-ID: <20020902154912.19024.qmail@sources.redhat.com> (raw)
>Number: 7810
>Category: optimization
>Synopsis: "gcc-3.2 -Wall -funroll-loops -mcpu=k6 -O1 -c bug.c" causes ICE in extract_insn
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Mon Sep 02 08:56:00 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator: bunk@fs.tum.de
>Release: 3.2
>Organization:
>Environment:
Debian unstable on Linux/i386
>Description:
$ gcc -Wall -funroll-loops -mcpu=k6 -O1 -c bug.c
bug.c: In function `seq_write':
bug.c:196: unrecognizable insn:
(insn 698 720 702 (set (reg:SI 210)
(neg:SI (reg/v:SI 61))) -1 (nil)
(nil))
bug.c:196: Internal compiler error in extract_insn, at recog.c:2148
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://www.gnu.org/software/gcc/bugs.html> for instructions.
$
It compiles as soon as I remove _one_ of the following options:
-funroll-loops
-mcpu=k6
-O1
The file bug.c is a stripped down version (some things removed and some definitions copied from header files)
of the file import/seqinfo.c in (the GPL'ed) transcode-0.6.0
(http://www.theorie.physik.uni-goettingen.de/~ostreich/transcode).
The bug is reproducible with the following compilers:
Debian unstable:
Reading specs from /usr/lib/gcc-lib/i386-linux/3.2.1/specs
Configured with: /mnt/data/gcc-3.1/gcc-3.2-3.2.1ds0/src/configure -v --enable-languages=c,c++,java,f77,proto,objc,ada --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-gxx-include-dir=/usr/include/c++/3.2 --enable-shared --with-system-zlib --enable-nls --without-included-gettext --enable-__cxa_atexit --enable-java-gc=boehm --enable-objc-gc i386-linux
Thread model: posix
gcc version 3.2.1 20020830 (Debian prerelease)
self-compiled:
Reading specs from ./gcc-3.2/bin/../lib/gcc-lib/i586-pc-linux-gnu/3.2/specs
Configured with: ../configure --enable-languages=c --prefix=/tmp/gcc-3.2
Thread model: posix
gcc version 3.2
>How-To-Repeat:
gcc -Wall -funroll-loops -mcpu=k6 -O1 -c bug.c
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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next reply other threads:[~2002-09-02 15:56 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-02 8:56 bunk [this message]
2002-10-03 10:10 hubicka
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