cbuild2 benchmarking - TCWG-360 [9/10]
* Knocked off a lot of rough edges
* Now working fairly robustly
lowlevellock.h comments - CARD-341 [4/10]
* Got a bit stuck trying to follow condvar locking
* But wasn't really needed to describe the code in question
LCA [10/10]
LCA recovery day [2/10]
Meetings/mail/etc [5/10]
=Plan=
cbuild2 benchmarking:
* Push upstream for others to look at
* Sort out storage story for benchmark sources and results
* Try to get working on a Juno (in LAVA, therefore on OE)
* Look at our Jenkins scripts with a view to figuring out how to hook in
* Work through list of bits 'n' pieces to fix -
+ Don't scrape logs (bad for server)
+ Don't fail on network timeouts
+ Extra target control knobs - disable ASLR, set a nasty nice value,
maybe hugepages
+ Set appropriate flags automatically for cross-builds
== Progress ==
* Monday off to recover from Connect (2/10)
* Catch up on email (1/10)
* Upstream work (1/10, CARD-341)
- Patch review
* Investigate malloc single-thread optimizations (1/10, TCWG-436)
- More exploratory work on atomics
* Investigate binutils support for full range of AArch64 relocs (1/10)
* Annual leave Thursday and Friday (4/10)
== Issues ==
* None
== Plan ==
* More work on atomics
* Figure out how to make an LLVM cross compiler with gas/ld
--
Will Newton
Toolchain Working Group, Linaro
== Progress ==
* LR register not used in leaf functions (TCWG-539) (2/10)
Posted the patch after regression testing
https://gcc.gnu.org/ml/gcc-patches/2014-09/msg01833.html
* AArch64 Spec2006 int regression (3/10)
- After struggling to boot Juno, found the combination that works
- Ran spec2006 int benchmarks to try reproduce
- waiting for more information to continue
* Launchpad bugs (LP1331112, LP1332640. LP1331126 and LP1320965) (3/10)
- Set-up cbuild2 and spec2k on aarch64 board
- ran aarch32 and aarch64 in aarch64 board with 09.2014
- Updated the bug entries with the results
* Misc (2/10)
- Connect recovery (2/10)
== Plan ==
* 29/09/2014 - Public holiday
* Get back to zero/sign extension with pass to promote operations
== Progress ==
* Connect recovery [6/10]
Very short week short week travel back from connect
22nd - 23rd travel.
25th - sick leave.
* Backport - Bug 676 - CSE did not optimize the redundant cmp
instruction on aarch64 [2/10].
Checked the issue by building latest trunk, linaro branch and by
adding the patch on top of linaro branch . Validated the code
generated at -O2 and it seemed to be optimal and bug does not occur.
Discussed with Christophe and decided to rebackport it along with
211881. It was reverted because of an libjava bug which is fixed in
211881. Used back flip to back port, git review was not automatically
working. So manually amended by adding the change log for combined
backport of revisions 209643 and 211881.
* Misc [2/10]
Prepared notes on LCU14 to AMD team.
Examined spec benchmark in internal Aarch64 hardware for a support issue.
Internal meeting and 1-1 with manager.
== Plan ==
* Coremark benchmark and report for PGO and PGO + LTO
* Get profiles on trunk for PGO and PGO + LTO
* 29/9/2014 - Personal day off
* 2/10/2014 - 3/10/2014- Dusserra Holidays Leave
== Progress ==
* Connect recovery [4/10]
* NEON load/stores (TCWG-516 [5/10])
. initial review of my vldN_lane asm()->__builtin patches is promising
. the other patches for other loads/stores are wrong. Have been investigating
(with upstream) how much bigger the can of worms is.
* Misc [1/10]
. LCA15 travel
. bug investigation (#405)
== Plan ==
* more NEON load/store
Short week, 2 days holiday (4/10)
== Progress ==
* GCC trunk/4.9 cross-validation (2/10)
- reported a few new FAILs
- trying to allocate time to fix new FAILs introduced in the 4.9
branch on devirt-28a.C, mostly because a testsuite configuration
problem.
- fixed reporting of email-driven validations
* AArch64 libsanitizer
- finally committed asan+ubsan support for AArch64!
* Misc (4/10)
* email catch-up
* calls/meetings
* updated backports speadsheet, backlog now > 75
* bugzilla management
== Next ==
* GCC trunk/4.9 cross-validation:
- actually reproduce+propose fixes for a couple of regressions
recently observed
* AArch64 thread sanitizer
* Neon intrinsic tests
* Analyze failures in Backport job in Jenkins
* Analyze differences in validation results between using shared libs
and static libs
I just updated the stable branch to match master, which in my testing
has been reliable and stable. I also changed the following Jenkins jobs
to use the stable branch: Backport, BuildFarm, BinaryRelease, SourceRelease.
Note that now any Jenkins job that runs tests and validates them using
the tcwgweb.sh script, the build and test run may succeed, but if there
are any regressions, the dot will be Red now instead of Green. This
primarily effects the Backport and the Release jobs.
- rob -
