Progress:
* misc:
** went through "aarch64 preparation" patchset (originally Alex's,
then modified by John), fixed a lot of issues/nits, and sent out
an updated version; this is now I think upstreamable-quality
except that it doesn't provide anything useful on its own.
** looked at the VirtualOpenSystems patchset for v8 KVM support in
QEMU; needs to be reconciled with John's work in the same area.
** Mans' LDA/STL patches now queued in target-arm.next to go upstream
** preparation for Connect
Plans:
* mach-virt
-- PMM
== Issues ==
* None
== Progress ==
* Investigate library dir issue in aarch64-linux-gnu release.
- Crosstool-ng should not link lib64 to lib.
- Eglibc used in Linaro release is too old. No configure to change
lib to lib64.
- Runtime tarball should not assume multiarch (aarch64 gcc does not
support it yet).
- When creating runtime tarball, use lib or lib64 bases on the TARGET.
* Fix misc issues in local conditional compare changes.
* Investigate how to optimize "c == '+' || c == '-'".
== Plan ==
* LCE13: July 8-12.
== Progress ==
* Short week (3 days off sick)
* Aarch64 frame growing downward: sent patch
* A few merges on Rob's behalf after approval by Yvan
* Prepared one more merge request
* Prepared for Connect
* Internal support
== Next ==
* Handle remaining backports for 4.8 release
* Disable peeling: resume work
== Issues ==
* None.
== Progress ==
* OE Launchpad bug #1192953 :
[g++ compilation terminated with error on Linaro-openembedded lamp image]
- Doko submitted a patch for that issue one year ago
- Mailing list pinged
* Launchpad bug #1186218 :
[kernel doesn't boot on Arndale/Nexus with Linaro GCC 4.8]
- Reproduced the build locally
- Need to have access to some hardware for further investigations
* LRA on ARM and AArch64:
- Fixed the issue, compiler now bootstrap
- Testing on-going before submission
* 2013-07 release:
- merge reviews
* LCE13:
- Connect registration done
- flight and hotel booked.
== Plan ==
* Merge review and release preparation
* LRA
== Progress ==
* Re-wrote gdb.dwarf2/dw2-error.exp and gdb.dwarf2/clztest.exp for arm.
* Investigated catch syscall patch in gdb patches to narrow down changes
required for arm.
* Continued with gathering documentation for future visas.
== Plan ==
* Test and fix failures due to optimization code in gdb.dwarf2/clztest.exp
for arm.
* Figure out a way to generate arm assembly for dwarf2/fission* gdb tests
using gcc.
* Further investigation arm requirements by going through catch syscall
patch for gdb on x86.
* Work with James to start UK and US visas for future visits.
Most of Last week spent on internal AMD work.
== Progress ==
* AArch64 LTO and PGO support.
LTO run for coremark and ran coremark on V8 model with and without the patch.
Ran perf on the model against the both the coremark binaries.
For non LTO, retired instructions seems to be less than the LTO one.
And PGO run for coremark did not emit any gcda file. Need to drill down further.
* AAarch64 testing
GCC runs still on going. Experimenting on spawning subtarget tests to
more than one V8 model.
== Plan ==
* Complete gcc testsuite with runs with trunk and trunk+gprof GCC patches.
* Continue LTO and PGO runs for AArch64
==issues==
* libssp support for AArch64
This work is currently in hold. Needed frame layout changes before
restarting.
== Progress ==
* spec2k comparison between ARM and x86
- Specfp on x86 has some failures in trunk
- Trying 4.8 now
- Analysed some of the benchmarks and documenting them
- continuing with the rest.
== Plan ==
* Continue with spec2k comparison between ARM and x86
== Issues ==
* None
== Progress ==
* Investigate big endian toolchain build in Linaro crosstool-ng.
- Fix an aarch64 triple name issue.
- Add Linaro armeb-linux-gnueabihf, aarch64_be-linux-gnu and
aarch64_be-none-elf configs for big endian builds.
- Please find the reference builds at:
http://cbuild.validation.linaro.org/build/crosstool-ng-linaro-1.13.1+bzr258…
* Design a test case for lp1189445 and revise the patch for review.
* Revise the shrink-wrap related fix for pr57637 and send out for review.
* Investigate lp:1194501 and lP:1194123
- lp:1194501 is confirmed a "tail call" issue, and also in trunk pr57731.
- lP:1194123 seams shrink-wrap related, since the case pass with
option -fno-shrink-wrap.
== Plan ==
* Continue on conditional compare.
Best Regards!
-Zhenqiang
== Progress ==
* Divmod patch
- Trying to regain knowledge about the SelectionDAG infrastructure
- Working with Tim and Joey, got a patch working, but seen some failures
in test-suite
- Will investigate and submit when all is clear
* Lencod in LNT
- Bug is a mix of ByVal with wrong spill offset, teams interacting
- Bug fixed by a side effect of another change, can't guarantee future
stability
* CBuild
- Patch merged, fired another LLVM benchmark, which failed the same way
- Not sure how to proceed here...
- Should I dig deep on the old CBuild?
- Or should I wait for CBuild2?
* Release Maintenance
- Talks about maintenance of old/current releases sparking on the list
- Bots, tests, benchmarks, release process will have to be followed for
those releases
- Binary & API compatibility kept, performance doesn't matter much, only
serious bugs fixed
- This will increase the cost of background duty on our team
* Other
- Reviewing some more patches
- Checking impact of a new alias analysis in the loop vectorizer, all good
- EuroLLVM 2014 meeting
- Long discussions about pre-UAL support in LLVM: Short answer: no.
- Someone else will look at PerfDB analysis, one less thing to do
- Got the Buildbot Pandas home, will look at them next week
== Issues ==
* After using all my RAM all the time, for a week, I found a fault on it
which prompted kernel panic and stopped my laptop from booting. Luckily, it
was just one of the two chips, and even better, it has a lifetime
guarantee! But I'll only get a new one after Connect... :(
== Plan ==
* Finish implementation AEABI divmod/udivmod calls
* Carefully analyse what's the best configuration for the pandas and
produce a pre-packed image
* NOT put them back before they're stable, snapshot a known good
configuration
* But put TWO pandas as self-hosting (and leave Galina's alone)
Time allowing...
* Check why Phoronix result pages are not working
* Write about target-specific tests on TestingGuide.rst
* Write a thing or two about the optimization levels in LLVM for the
official docs
== Progress ==
* Some further work on AArch64 ifunc failure, no progress.
* Add some extra features to cortex-strings plotting capability.
* More memcpy gerrit review.
* Basic framework for testing and benchmarking malloc.
* Extracted glibc malloc from glibc.
* Pushed memcpy performance tweak to cortex-strings and newlib for review.
== Issues ==
* None.
== Plan ==
* Prepare for Connect.
* Resubmit memcpy to gerrit as requested.
* Respin AArch64 ifunc patches against latest head.
--
Will Newton
Toolchain Working Group, Linaro
