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* [Bug rtl-optimization/97275] New: Linux kernel cgroup.c internal compiler error (ICE).
@ 2020-10-02 22:01 dr.duncan.p.simpson at gmail dot com
2020-10-04 16:55 ` [Bug rtl-optimization/97275] " dr.duncan.p.simpson at gmail dot com
2020-10-05 8:12 ` acoplan at gcc dot gnu.org
0 siblings, 2 replies; 3+ messages in thread
From: dr.duncan.p.simpson at gmail dot com @ 2020-10-02 22:01 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97275
Bug ID: 97275
Summary: Linux kernel cgroup.c internal compiler error (ICE).
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: dr.duncan.p.simpson at gmail dot com
Target Milestone: ---
Host: amd64-linux-gnu
Target: aarch64-linux-gnu
Build: 11.0.0 20201002
Created attachment 49303
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=49303&action=edit
cgroup.c reduced to compiler ICE generator
The attached file is a reduced version, which tickles the bug for me. Note that
not using -fno-strict-overflow or most other minor changes eliminate the ICE.
In the original version of cgroup.c many of the things which are compile time
constants in my version are values the compiler might not be able to reason
about.
dps@dps-laptop:~/src/kernel/foo$ aarch64-linux-gnu-gcc -v
Using built-in specs.
COLLECT_GCC=aarch64-linux-gnu-gcc
COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/aarch64-linux-gnu/11.0.0/lto-wrapper
Target: aarch64-linux-gnu
Configured with: ../gcc/configure --enable-shared --enable-lto
--enable-languages=all --target=aarch64-linux-gnu
--program-prefix=aarch64-linux-gnu- --with-sysroot=/ --enable-host-shared
--enable-host-lto --with-as=/usr/aarch64-linux-gnu/bin/as
--with-ld=/usr/aarch64-linux-gnu/bin/ld --with-ar=/usr/aarch64-linux-gnu/bin/ar
--with-ranlib=/usr/aarch64-linux-gnu/bin/ranlib : (reconfigured)
../gcc/configure --enable-shared --enable-lto --enable-languages=all
--target=aarch64-linux-gnu --program-prefix=aarch64-linux-gnu- --with-sysroot=/
--enable-host-shared --enable-host-lto --with-as=/usr/aarch64-linux-gnu/bin/as
--with-ld=/usr/aarch64-linux-gnu/bin/ld --with-ar=/usr/aarch64-linux-gnu/bin/ar
--with-ranlib=/usr/aarch64-linux-gnu/bin/ranlib
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 11.0.0 20201002 (experimental) (GCC)
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug rtl-optimization/97275] Linux kernel cgroup.c internal compiler error (ICE).
2020-10-02 22:01 [Bug rtl-optimization/97275] New: Linux kernel cgroup.c internal compiler error (ICE) dr.duncan.p.simpson at gmail dot com
@ 2020-10-04 16:55 ` dr.duncan.p.simpson at gmail dot com
2020-10-05 8:12 ` acoplan at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: dr.duncan.p.simpson at gmail dot com @ 2020-10-04 16:55 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97275
--- Comment #1 from Duncan Simpson <dr.duncan.p.simpson at gmail dot com> ---
Further information: if I use the same compiler version but a x86_64-linux-gnu
version then I get a message from the assembler telling me than the strlr
instruction is not supported but no ICE.
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug rtl-optimization/97275] Linux kernel cgroup.c internal compiler error (ICE).
2020-10-02 22:01 [Bug rtl-optimization/97275] New: Linux kernel cgroup.c internal compiler error (ICE) dr.duncan.p.simpson at gmail dot com
2020-10-04 16:55 ` [Bug rtl-optimization/97275] " dr.duncan.p.simpson at gmail dot com
@ 2020-10-05 8:12 ` acoplan at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: acoplan at gcc dot gnu.org @ 2020-10-05 8:12 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97275
Alex Coplan <acoplan at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
CC| |acoplan at gcc dot gnu.org
Resolution|--- |DUPLICATE
--- Comment #2 from Alex Coplan <acoplan at gcc dot gnu.org> ---
Dup.
*** This bug has been marked as a duplicate of bug 96998 ***
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2020-10-05 8:12 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2020-10-02 22:01 [Bug rtl-optimization/97275] New: Linux kernel cgroup.c internal compiler error (ICE) dr.duncan.p.simpson at gmail dot com
2020-10-04 16:55 ` [Bug rtl-optimization/97275] " dr.duncan.p.simpson at gmail dot com
2020-10-05 8:12 ` acoplan at gcc dot gnu.org
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