On 18 August 2012 12:06, Ramana Radhakrishnan
<ramana.radhakrishnan(a)linaro.org> wrote:
> This should have been fixed by this patch . I'm a bit surprised that
> we are seeing these failures still ?
>
> ../ports/sysdeps/unix/sysv/linux/arm/ldsodefs.h:41:0: warning:
> "MORE_ELF_HEADER_DATA" redefined [enabled by default]
>
> http://permalink.gmane.org/gmane.comp.lib.glibc.ports/1428
>
> which should have made it back to eglibc 2.16 ?
Well, that's embarrassing. The eglibc script is used to both build
eglibc and to use a fixed eglibc to test GCC. The latter was winning
so every snapshot build was actually building eglibc 2.12.
Fixed and testing,
-- Michael
Current Milestones:
|| || Planned || Estimate || Actual ||
||cp15-rework || 2012-01-06 || 2012-06-23 || 2012-06-24 ||
||a15-lpae-support || 2012-07-13 || 2012-07-20 || 2012-07-20 ||
||clean-up-kvm-patches || || || ||
||track-kvm-abi-changes || || || ||
||fake-trustzone || || || ||
== clean-up-kvm-patches ==
* started on driving "read/write cp15 regs from kernel" from the existing
QEMU hashtable of cp regs it knows about. First cut seems to work,
but needs more testing and also qemu's ARMCPRegInfo struct needs to
provide raw_read/write methods which bypass access permission and
similar checks.
== other ==
* shepherded various things into upstream QEMU for 1.2 release freeze:
arm-devs patch queue, linux-user patches, some minor stuff
* qemu-linaro 2012.08 released
* travel booked for Connect/ELC-E/KVM Forum; rest is blocked on
the Connect conference hotel discount rate/booking info appearing
KVM blueprint progress tracker:
http://apus.seabright.co.nz/helpers/backlog?group_by=topic&colour_by=state&…
-- PMM
The Linaro Toolchain Working Group is pleased to announce the 2012.08
release of both Linaro GCC 4.7 and Linaro GCC 4.6.
Linaro GCC 4.7 2012.08 is the fifth release in the 4.7 series. Based
off the latest GCC 4.7.1+svn189992 release, it includes many
ARM-focused performance improvements and bug fixes.
Interesting changes include:
* Updates to GCC 4.7.1+svn189992
* An ABI fix for vectors with the wrong layout
* Backports improvements to the NEON vdup instruction with immediates
* Backports a fix to performance regressions in partial redundancy
elimination at high optimisation
* Backports faster 64 bit core register adds with immediates
A bug has been fixed in GCC's implementation of the AAPCS rules for
the layout of vectors that could lead to wrong code being generated.
Vectors larger than 8 bytes in size are now by default aligned to an
8-byte boundary. This is an ABI change: code that makes explicit use
of vector types may be incompatible with binary objects built with
older versions of GCC. Auto-vectorized code is not affected by this
change.
Fixes:
* LP: #1020601 Strange behaviour with __builtin_unreachable()
* PR38785 huge performance regression on EEMBC bitmnp01
* PR53447 missed optimization of 64bit ALU operation with small constant
Linaro GCC 4.6 2012.08 is the eighteenth release in the 4.6 series.
Based off the latest GCC 4.6.3+svn189991 release, this is the fifth
release after entering maintenance.
Interesting changes include:
* Updates to 4.6.3+svn189991
* An ABI fix for vectors with the wrong layout
The source tarballs are available from:
https://launchpad.net/gcc-linaro/+milestone/4.7-2012.08https://launchpad.net/gcc-linaro/+milestone/4.6-2012.08
Downloads are available from the Linaro GCC page on Launchpad:
https://launchpad.net/gcc-linaro
More information on the features and issues are available from the
release page:
https://launchpad.net/gcc-linaro/4.7/4.7-2012.08
Mailing list: http://lists.linaro.org/mailman/listinfo/linaro-toolchain
Bugs: https://bugs.launchpad.net/gcc-linaro/
Questions? https://ask.linaro.org/
Interested in commercial support? Inquire at support(a)linaro.org
-- Michael
== Progress ==
* Out of office Friday 17
* Attended Virtual Connect sessions:
* Vectorization
* PGO/LTO: provided benchmarking results on Webkit computed in ST last
year.
* At last managed to have bzr working
* Prepared a patch for "constant vec permute operation for the vext
instruction" blue-print, based on linaro-gcc/4.7
* Some pending internal work
== Next week ==
* Out of office Monday 20
* Check reviews for my patch to have it accepted.
Hi Matt. I've fleshed out the Etherpad for the PGO and LTO session at:
http://pad.linaro.org/GzRj35tXFt
It's a topic list that needs some specifics. Could you make sure we
have basic answers to any correctness or performance questions?
Ramana, could you add the specifics from the performance call? I
can't seem to find the right meeting in the logs.
-- Michael
== Progress ==
* Out of office Friday 17
* Attended Virtual Connect sessions
* Vectorization
* Ran PGO/LTO session
* Lurked on AArch64/OpenEmbedded and Dalvik Performance sessions
* Did the 2012.08 release of the Toolchain
* Ran into infrastructure problems with armv5 builds
* Most of the build process is now done
* Start working on symbol_ref split benchmarking.
* Struggled to get my jobs to spawn
* Started to backport Ramana's fix to PR54212
* Submitted merge request for 4.7 backport
== Next Week ==
* Ensure 2012.08 release is completed
* Get symbol_ref benchmarking going properly
* Complete backports of PR54212
* Follow up to Virtual Connect Sessions
== Future ==
* Get my name against some blue-prints
* Find a small patch to GCC to use to pipeclean the submission process
--
Matthew Gretton-Dann
Linaro Toolchain Working Group
matthew.gretton-dann(a)linaro.org
The Linaro Toolchain Working Group is pleased to announce the release of
Linaro QEMU 2012.08.
Linaro QEMU 2012.08 is the latest monthly release of qemu-linaro. Based
off upstream (trunk) QEMU, it includes a number of ARM-focused bug fixes
and enhancements.
There are no major changes in this month's release, though
it has been updated to track the latest upstream QEMU changes.
The source tarball is available at:
https://launchpad.net/qemu-linaro/+milestone/2012.08
More information on Linaro QEMU is available at:
https://launchpad.net/qemu-linaro
On 15 August 2012 00:45, Matthew Gretton-Dann
<matthew.gretton-dann(a)linaro.org> wrote:
> So looking at the logs this seems to be a transient data transfer error:
>
> The logs (http://builds.linaro.org/toolchain/gcc-linaro-4.7-2012.08/logs/armv7l-natty…)
> have:
>
> make[4]: Entering directory `/scratch/cbuild/slave/slaves/tcpanda02'
> make -s -f ../../lib/fetch.mk
> gcc-linaro-4.7-2012.08/gcc-linaro-4.7-2012.08.tar-spawn 2>&1 | grep -v
> '^make\['
> Trying http://builds.linaro.org/toolchain/snapshots/gcc-linaro-4.7/gcc-linaro-4.7-…
> Trying http://ex.seabright.co.nz/snapshots/gcc-linaro-4.7/gcc-linaro-4.7-2012.08.t…
> Trying http://builds.linaro.org/toolchain/snapshots/gcc-linaro-4.7-2012.08.tar.xz
> Trying http://ex.seabright.co.nz/snapshots/gcc-linaro-4.7-2012.08.tar.xz
> Trying http://builds.linaro.org/toolchain/snapshots/gcc-linaro-4.7/gcc-linaro-4.7-…
> Trying http://ex.seabright.co.nz/snapshots/gcc-linaro-4.7/gcc-linaro-4.7-2012.08.t…
> Trying http://builds.linaro.org/toolchain/snapshots/gcc-linaro-4.7-2012.08.tar.bz2
> Trying http://ex.seabright.co.nz/snapshots/gcc-linaro-4.7-2012.08.tar.bz2
> bunzip2: gcc-linaro-4.7-2012.08/gcc-linaro-4.7-2012.08.tar.bz2: data
> integrity (CRC) error in data
Not sure here. ex.seabright is the authoritative source. Perhaps
there was a fault with the proxy in the control lab?
The good news is that the test fired and the build failed early. I've
logged LP: #1036867 to see if it happens again.
> The x86_64 build has succeeded OK though, so I (well Ramana really)
> have, eventually, restarted that build. We did encounter some issues
> with restarting the build as follows:
>
> 1) My Launchpad ID doesn't have permissions to spawn jobs through the
> web interface at ex.seabright.co.nz
Fixed.
> 2) So I attempted to spawn the job manually as follows:
>
> $ ssh -p7023 cbuild(a)ex.seabright.co.nz ./cbuild/tools/spawn.sh
> gcc-linaro-4.7-2012.08 armv5-builder
> Spawning gcc-linaro-4.7-2012.08 into the queue benchmarks
> Spawned into a9-builder
>
> This wasn't exactly what I expected. What are the correct runes
> here to get a build?
Spawn picks the closest spawn class based on the filename or, if
supplied, the second argument. Here you supplied 'armv5...' which is
closest to 'benchmarks'.
What you want is to click 'Release' beside the job name in the
scheduler view, to respawn through the /spawn interface, or to touch
the .job file in cbuild@orion:~/queue/armv5-builder.
> I've left this job in place as I've probably done enough damage already...
>
> 3) Ramana then attempted to use the web-interface at
> http://ex.seabright.co.nz/helpers/recent to get the job to rebuild
> (http://ex.seabright.co.nz/helpers/scheduler/spawn?queue=armv7l&job=gcc-lina…).
> However, this results in a Python exception.
Real men don't use user-friendly argument checking :) Well, not on
hacks like this tool. There is no armv7l queue so an assert fired.
> 4) Finally we used Ramana's credentials on the spawn interface, and
> that seems to have spawned the rebuild correctly.
Good.
> I'll let this run and see what happens.
>
> Michael, can you just check that things are progressing properly
> please, and also give me appropriate permissions on the web interface?
Checking:
http://ex.seabright.co.nz/helpers/buildlog/gcc-linaro-4.7-2012
shows that the build finished on x86_64 and i686. Checking /scheduler
shows that ARM builds are in progress on a9hf, a9, and armv5. Most
are in the testsuite and have ~6 hours to go.
-- Michael
== Progress ==
Linaro tasks.
* Some work on the intrinsics patches.
* Looked into auto-inc-dec stuff. Not enough improvements with scheduler
changes.
* Helped Matt get up to speed and wrote up some stuff for Christophe
with the vext examples.
* Investigated a bug that Mans reported upstream with the compiler
generating vdupeq . Have a patch being tested.
== Plans ==
* Finish up pending patches upstream. (neon intrinsics patches need to
be committed)
* Finish handing over patches.
* Fix PR54212.
Looks like I missed sending this for 2 weeks in a row.
== Progress ==
Linaro tasks.
* Some upstream discussions on neon testsuite bug. Poked at ML for
quite a bit. Looks like regexps in the neon intrinsics testsuite is
just wrong.
* Looking at a better way of doing the 64 bit arithmetic patches that
carrot proposed. Don't like them.
* Discussed with Richard about ubfx for a while.
* Reviewed the backlog and came up with suggestions for things for
people to do . Thought a bit about some stuff that Michael asked me to
look at .
== Plans ==
* Look at auto-inc-dec patches more and investigate benchmark results.
* Follow up on Intrinsics work.
* Follow-up on my intrinsics patches upstream.
* Finish looking at PR53664 and clean up testsuite further.
* Set up a TC2 for Linaro for benchmarking in the validation lab.
== Absences ==
* 17th Sept - 5th Oct - Vacation approved.
* 29th Oct - 5th Nov - Copenhagen Linaro Connect. Travel and hotel to
be booked.
