== This week ==
* TCWG-317 - Exploit wide add operations when appropriate for Aarch32 (3/10)
- Could not reproduce test failure in qemu
- Waiting on feedback from Maxim who is running patch on Linaro
validation
* TCWG-369 - Exploit wide add operations when appropriate for Aarch64 (4/10)
- Debugging tree vectorizer to determine why loops with no wide add
operations are no longer being vectorized
* TCWG 146 - Debugging regression on arm big endian with Linaro 5 branch
(2/10)
* Misc (1/10)
- Conference calls
== Next week ==
- TCWG-317 - Resolve lto big endian failures
- TCWG-369 - Identify why loops are not being vectorized
- TCWG-146 - Resolve big endian failures
== This Week ==
* TCWG-72 / PR43721 (8/10)
- Completed writing expand_DIVMOD() and submitted patch upstream
- Reworked patch according to Richard Biener's comments.
(http://people.linaro.org/~prathamesh.kulkarni/pr43721-patch-v2.diff)
- Wrote test-cases.
* TCWG-319 (1/10)
- Benchmark run without patch complete for "int" benchmarks on a53, a57
- Benchmark run with patch in progress for "int" benchmarks on a53, a57
* Misc (1/10)
- Meetings
== Next Week ==
- Continue with TCWG-72, TCWG-310li, TCWG-319 benchmarking
# Progress #
* TCWG-332, [1/10], patch is posted for review.
* TCWG-187, [1/10], looks like a kernel (~3.4) bug on setting VFP
registers through ptrace. Fails go away after I upgrade the kernel.
* TCWG-387, [2/10], binutils patch is committed, while GDB
patches are being reviewed.
* TCWG-422, [3/10], Read AAPCS and gcc source code to understand the
calling convention. On going.
* FSF patch review, [2/10]
** Review patch set "all-stop on top of non-stop for remote".
** Review ARM fast tracepoint patches.
** Reopen PR 15564, as the fail isn't fixed.
* Misc, meeting, [1/10]
# Plan #
* TCWG-422
* Support ST on using AArch64 multi-arch GDB if needed.
* Review ARM GDBserver software single step patch.
--
Yao
== This week ==
* TCWG-317 - Exploit wide add operations when appropriate for Aarch32 (5/10)
- Continued to debug big endian/lto failure of four torture tests
- Differences in lto vs. non-lto executables showed no significant
differences
* TCWG-369 - Exploit wide add operations when appropriate for Aarch64 (4/10)
- Resolved three of six test suite failures
* Misc (1/10)
- Conference calls
== Next week ==
- TCWG-317 - Resolve lto big endian failures by debugging test cases
with qemu
- TCWG-369 - Resolve remaining test suite failures
--
Michael Collison
Linaro Toolchain Working Group
michael.collison(a)linaro.org
Hello all,
When upgrading meta-linaro/meta-linaro-toolchain from daisy to fido, we faced drastic performance downgrade (-34.06%) on linux ipv4 forwarding. The board is ls1021atwr (ARM Cortex-A7 MPCore compliant with ARMv7-A architecture).
We did some investigation, and suspected that it is caused by the toolchain upgrade. Did someone meet similar issue?
The detailed toolchain info:
https://git.linaro.org/openembedded/meta-linaro.git/shortlog/refs/heads/fido
gcc-linaro-4.9.3-2015.03, glibc-linaro-2.20-2014.11, binutils-linaro-2.25-2015.01
https://git.linaro.org/openembedded/meta-linaro.git/shortlog/refs/heads/dai…
gcc-linaro-4.8.3-2014.04, eglibc-linaro-2.19-r2014.04, binutils-linaro-2.24-r2014.03
thanks.
-Ting
o Week 42 off (10/10)
== Progress ==
o Linaro GCC (9/10)
* Completed backports and reviews
* Delivered GCC 5 2015.10 snapshot
* Completed TCWG 389 (deploy snapshot job)
o Misc (1/10)
* Various meetings
== Plan ==
o Back to work
Mustang benchmarking bringup - (no ticket) [2/10]
Controlled Debian build - TCWG-360 [1/10]
* Constructed filesystem, works OK as chroot
* Next step is to boot it
Investigate Workload Automation framework - TCWG-361 [1/10]
* Seems to basically work
* SPEC support dubious
Misc
* LAVA uinstance background (TCWG-396, < 1/10)
* Noise control experiments (TCWG-358, < 1/10)
* ARM management duties [2/10]
== Progress ==
* Maintenance (5/10)
- Investigating some LivermoreLoops that don't vectorise
- Reducing cases to single specific causes
* Background (5/10)
- Code review, meetings, discussions, general support, etc.
- More code of conduct stuff, license change to Apache 2
- Following up on sanitizers VMA discussion
* Two days (Tue and Thu) off. [4/10]
# Progress #
* TCWG-180, patch is committed by Andrew Stubs. [1/10]
I review and approve it.
* Review patch set "all-stop on top of non-stop for remote". [3/10]
Test them on aarch64 and arm. Triage and fix one regression. Review
is still on going.
* Review patch set "ARM gdbserver software breakpoint". [2/10]
Review and approve them. They are preparatory to ARM tracepoint.
# Plan #
* Patch review.
* TCWG-387, Move GDB using libopcodes to decode instructions.
--
Yao
