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From: Jorn Baayen <jorn@nl.linux.org>
To: gcc-gnats@gcc.gnu.org
Cc: jorn@nl.linux.org
Subject: optimization/4081: "-O2 -march=k6" cflags are broken with gcc 3.0.1
Date: Wed, 22 Aug 2001 06:26:00 -0000 [thread overview]
Message-ID: <200108221313.f7MDDip20428@orthanc.hub1> (raw)
>Number: 4081
>Category: optimization
>Synopsis: "-O2 -march=k6" cflags are broken with gcc 3.0.1
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: ice-on-legal-code
>Submitter-Id: net
>Arrival-Date: Wed Aug 22 06:26:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:
>Release: 3.0.1
>Organization:
>Environment:
System: Linux orthanc 2.4.8-ac1 #3 Sun Aug 12 00:11:33 CDT 2001 i586 unknown
Architecture: i586
CPU: AMD K6-2 400
Libc: GNU libc 2.2.3
host: i586-pc-linux-gnu
build: i586-pc-linux-gnu
target: i586-pc-linux-gnu
configured with: ../gcc-3.0.1/configure --prefix=/usr --with-gxx-include-dir=/usr/include/g++ --enable-shared --enable-languages=c,c++,f77
>Description:
GCC gives an ice on certain pieces of code when compiled with
"-O2 -march=k6", it doesn't with "-march=k6" alone.
>How-To-Repeat:
Compile texinfo 4.0 with CFLAGS set to "-O2 -march=k6", gives the
following ice:
...
gcc -DINFODIR=\"/usr/info\" -DLOCALEDIR=\"/usr/share/locale\" -DHAVE_CONFIG_H -I. -I../lib -I../intl -I.. -I. -O2 -march=k6 -c info-utils.c
info-utils.c: In function `printed_representation':
info-utils.c:489: Unrecognizable insn:
(insn 360 342 344 (parallel[
(set (reg:SI 1 edx [86])
(const_int 0 [0x0]))
(clobber (reg:CC 17 flags))
] ) -1 (nil)
(expr_list:REG_UNUSED (reg:CC 17 flags)
(nil)))
info-utils.c:489: Internal compiler error in insn_default_length, at insn-attrtab.c:223
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL: http://www.gnu.org/software/gcc/bugs.html > for instructions.
make[2]: *** [info-utils.o] Error 1
make[2]: Leaving directory `/home/jorn/texinfo-4.0/info'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/jorn/texinfo-4.0'
make: *** [all-recursive-am] Error 2
[jorn@orthanc texinfo-4.0]$
>Fix:
Workaround is ofcourse to optimize with "-O2 -march=i586", as this
works properly.
>Release-Note:
>Audit-Trail:
>Unformatted:
next reply other threads:[~2001-08-22 6:26 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-08-22 6:26 Jorn Baayen [this message]
2001-10-04 17:57 rodrigc
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