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
Progress:
* VIRT-49 closed out (cp15 migration patches committed upstream)
* virtio:
** virtio-mmio patchset v1 now sent out to qemu-devel
* misc:
** fixed some instances of undefined behaviour (mostly shift related)
diagnosed by clang -fsanitize=undefined
** worked through upstream review backlog, sent target-arm and arm-devs
pullreqs
Plans:
* VirtualOpenSystems (sponsored by Huawei) have sent a patchset for
KVM support in QEMU for ARMv8; need to review this and reconcile it
with the Linaro work in progress in this area
* mach-virt
* preparation for Connect
-- PMM
== Issues ==
* None
== Progress ==
* Investigate conditional compare RTL representation.
- Fix new fails when expanding conditional compare to cmp_and/cmp_ior.
* Identify the root cause for pr57637.
== Plan ==
* Continue on conditional compare.
== Issues ==
* None.
== Progress ==
* OE Launchpad bug #1192953
- 4.8 g++ failed to find c++ included headers because of the
combined usage of --with-sysroot and --with-g++-include-dir
- Investigated the issue with Andrew McDermott
- found an existing OE workaround
* LRA on ARM and AArch64:
- Fixed AArch64 failure
- Moved to the new one
* Cbuild Babysitting
== Plan ==
* Merge review
* LRA
== Progress ==
* Started re-writing x86 assembly language gdb test cases for arm.
* Debugging watchpoints code to investigate issues on arm.
* Upgraded chromebook Ubuntu installation to a faster SD card.
* Tried to resolve various travel hurdles. Gathering different kind of
documents for future travel, submitted passport for extension etc.
== Plan ==
* Submit more gdb patches to mailing list.
* Wind up work on translation of gdb test cases in arm assembly.
* Further investigation about watchpoint issues on arm.
* Work on filing US and UK visit visas.
== Progress ==
* AArch64 LTO and PGO support.
Tweaked make file to run coremark on V8/openembedded model
Experimenting with PGO runs for coremark.
* AAarch64 testing
Set up Cross build and test in V8 model for GCC testsuites on one of
workstation in lab.
Completed g++ testsuite with V8 model for gcc trunk. Running gcc tests now.
* Installed Ubuntu 13.04 on Chrome book.
== Plan ==
* Complete gcc testsuite with runs with trunk and trunk+gprof GCC patches.
* Continue LTO and PGO runs for AArch64
* Linaro connect preparation, check VISA status.
==issues==
* libssp support for AArch64
This work is currently in hold. Needed frame layout changes before
restarting.
* Waiting for some inputs from Rob on Bootstrap issue with GCC on V8 model
