== Progress ==
* Regression on alphaev68-linux-gnu due to uxt/sxt commit (6/10)
- posted patch for promoted type based VRP after fixing issues found in
bootstrapping and regression testing. But had to drop this as this might
have performance implications.
https://gcc.gnu.org/ml/gcc-patches/2014-09/msg00288.html
- Proposed setting a flag to indicating overflow/wrap so that we can
remove uxt/sxt safely.
* Preparation for connect hacking session (2/10)
- Started with materials for the discussions.
* misc (2/10)
- Visa
- Meetings
== Issues ==
- Value range data generated by VRP is not reliable for uxt/sxt removal
as wrapping/overflow is not propagated.
- Patch for Calculating range in promoted type is rejected
- Proposed propagating additional flag (with some tweaking to preserve
size) so that this information is available at the time we deicide on
uxt/sxt redundancy
- If this cannot be agreed, this patch has to be reverted
== Plan ==
* finalize overflow/wrap propagation
* prepare for connect
== Progress ==
* Email, meetings, etc. (1/10)
* Upstream work (1/10, CARD-341)
- Patch review
* LCU14 slides and review (4/10)
* More work on malloc app benchmark framework (4/10, TCWG-441)
- Ironed out a few bugs and sources of noise
- Still need to find a broader range of workloads
== Issues ==
* None
== Plan ==
* Look into malloc single thread optimization patches situation
* Find more workloads to add to malloc benchmarks
--
Will Newton
Toolchain Working Group, Linaro
== Progress ==
* Automation Framework (CARD-1378 2/10)
- Configuring D01s into a three-schroot box
- Turned out unstable, reverting to 4-core setup
* Toolchain (CARD-862 0/10)
- Re-committed vectorizer patch with MSVC2012-friendly code
* LLVM 3.5 Release (TCWG-476 1/10)
- Final release out, all done
* Buildbots (TCWG-76 4/10)
- Adding support for CMake on buildbot Zorg's interface
- Making the CMake builds test without NEON
- Created a compiler-rt bot, found some bugs, investigating
- Submitting changes upstream, will be up soon
* Background (3/10)
- Code review, meetings, discussions, etc.
- Presentations (Connect, LPC)
== Plan ==
* Migrate stack unwinding to VFP for ARMv7+ in compiler-rt
* Start implementing fpu stuff in assembler (parser/attributes)
* Finish LPC presentations
== Progress ==
* GCC trunk/4.9 cross-validation (1/10)
- monitoring results
- noticed failures on newly introduced tests when running on armeb.
Kyrill will fix his tests.
* bug #306 (bootstrap failure on i686) (1/10)
- unable to reproduce it
* AArch64 libsanitizer (3/10)
- asan and most of ubsan tests now pass
- submitted a gcc patch to enable it
- thread sanitizer does not work yet
* Neon intrinsic tests (1/10)
- ran the whole testsuite on aarch64* and arm* targets on gcc trunk
- reported an ICE on aarch64*; was a duplicated, fixed today by Carrot
- there are still several tests failing at runtime, need time to
reduce the testcases
* Misc (conf calls, meetings, ...) (4/10)
- usual 1:1 and team calls
- bugzilla management
== Next ==
* GCC trunk/4.9 cross-validation monitoring
* AArch64 thread sanitizer
* Neon intrinsic tests
* Connect preparation (hacking sessions)
Folks,
Clang+LLVM 3.5.0 was released yesterday (3rd Sep) and Linaro, as
usual, have tested both ARM and AArch64 native builds. This is a major
milestone for LLVM on ARM/AArch64, please read the release notes to
find out more.
http://llvm.org/releases/3.5.0/docs/ReleaseNotes.html
You can download the native ARM binaries (and sources) at:
http://llvm.org/releases/download.html#3.5.0
Since LLVM is natively a cross-compiler, you can download the binary
to your host platform and compile to ARM or AArch64, but you'll need
extra tools (linker, libc, etc).
The main changes are:
* EHABI is now enabled by default and it's compatible with both gcc_eh
and libc++abi unwinding libraries.
* The integrated assembler has got a complete makeover and is now
enabled by default on ARM and AArch64. It supports most of what GCC
produces and a good part of the hand-coded assembly we've seen in the
wild. Please report bugs!
* The current AArch64 back-end is the resulting of a merge between the
existing back-end with Apple's own private back-end (that they open
sourced). It's faster and as stable as the previous and has been
further improved since the merge.
* Compiler-RT has been integrated to the ARM/AArch64 CMake build,
including the sanitizers, though the resulting quality is still beta.
Please report bugs!
This is the first time that Linaro has produced binaries for both ARM
and AArch64 and we'll continue to do so for all major and minor
releases from now on. If there is any patch on trunk for ARM/AArch64
that you need back-ported to 3.5.1 (and beyond), please let us know.
Feedback and Support
Subscribe to the important Linaro mailing lists and join our IRC channels to
stay on top of Linaro development.
** Linaro Toolchain Development "mailing list":
http://lists.linaro.org/mailman/listinfo/linaro-toolchain
** Linaro Toolchain IRC channel on irc.freenode.net at @#linaro-tcwg@
* Bug reports should be filed in LLVM's bugzilla:
http://www.llvm.org/bugs/
* Questions? "ask Linaro":
http://ask.linaro.org/.
* Interested in commercial support? Inquire at "Linaro support":mailto:
support(a)linaro.org
Regards,
--renato
On 09/02/2014 01:36 PM, Renato Golin wrote:
> Plus, the American culture that I like the most is steak. And bacon. I
> think I'll pass.
I won't be making it either. Around here, American culture is called
the Rodeo. :-)
- rob -
== Progress ==
Arm gdb record-replay pending patches up-streaming [3/10]
* Update, test and resubmit patches
AArch64 gdb record-replay patches up-streaming [3/10]
* Update, test and resubmit patches
Miscellaneous [4/10]
* Configure git for replying to previous patch submission using send email.
* PERF try out on chromebook
* Update record-replay slides and debug using cdt integration.
* Emails/Patch scrolling/Meetings etc
== Plan ==
Up-streaming of all pending patches after updates.
GDB Tracepoints/Fast Tracepoints support on arm [TCWG-480]
LCU14 slides preparation and study for presentation.
== This week ==
* TCWG-515 - Neon intrinsic testing part 1 (1/10)
- Completed testing on ARM targets
- Identified failure on vclz intrinsic at all optimization levels
* TCWG-524 - Neon intrinsic testing part 4 (1/10)
- Completed ARM testing with no regressions found
* TCWG-525 - Neon intrinsic testing part 5 (1/10)
- Completed ARM testing with no regressions found
* TCWG-528 - Neon intrinsic testing part 6 (1/10)
- Completed ARM testing with no regressions found
* TCWG-529 - Neon intrinsic testing part 7 (1/10)
- Completed ARM testing with no regressions found
* Launchpad 1312931- gcc 4.8 internal compiler error: in add_stores, at
var-tracking.c (2/10)
- Resolved and tested on linaro 4.9 branch
* Linaro Connect Presentation (2/10)
- Completed "Optimization Levels" portion of presentatio
* Misc. (2/10)
- Launchpad to bugzilla transition
- Conference calls with Ryan and Christophe
* Issues
- Delay in validating Launcpad 1312931 due to SchrootFarm instability
- Unable to issue code review on Gerrit after server upgrade
== Next week ==
- USA Holiday, Monday, september 1s
- Continue Neon intrinsic testing
- Finalize Linaro Connect presentation
- Bug fixing
== Progress ==
* TCWG-181 - Bench marking core mark with LTO (2/10)
Measuring -O3 -flto vs -O3 on Aarch64 machine with Linaro GCC and
Trunk FSF GCC.
* TCWG-520 ICE in linaro compiler for ARMv7 target (4/10).
Completed fixing. patch tested on schroot. Backported revision from
trunk using gerrit and jenkins. upstreamed the patch.
* Others (2/10)
* Meetings Christophe, Ryan, Maxim and GCC status meeting
* Misc and internal meeting.
* Discussed with Yvan on using gerrit and backflip script.
4 day week, Friday 29/8 was holiday.
== Plan ==
* Another Bug fixing task .
* Continue Benchmark Core mark with LTO (TCWG-181).
* Upstream patch review.
* Cbuildv2 preparation for hack session in LCU14.
== Progress ==
* Regression on alphaev68-linux-gnu due to uxt/sxt commit (7/10)
- built cross alphaev68-linux-gnu and reproduces it with qemu.
- Issue is due to PROMOTE_MODE definition and VRP truncating values.
- discussed upstream and after a failed patch, it was suggested that
the value ranges have to be calculated in promoted_mode precision.
- Patch to do VRP in promoted_mode is in testing. There are few
failures to fix.
- An easier fix probably is to check the promoted mode against
word_mode and disable uxt/sxt elimination.
* TCWG-521 - Analysed Coremark and Spec2k for uxt/sxt optimizations
TCWG-521(2/10)
- Continue with Coremark and have additional patches in development for
missing cases.
* bswap pr43550 (No card yet) (1/10)
- Finished regression testing. Will post the patch after resolving
regression with alpha.
== Paln ==
* Continue with VRP in promoted mode, TCWG-521 and bswap pr43550.
