== Progress ==
-Attended 1:1 and other team meetings
-Read linaro wiki and on boarding instructions
-Backported Cortex A7 pipeline description to Linaro 4.7 gcc from fsf
trunk and got it reviewed
== Plan for next week ==
- Look into CoreMark regresses in Thumb-2 mode when using the LR regnum.
- Start with research for Removing unnecessary zero/sign extends
Progress:
* Linaro's KVM/QEMU mini-summit, aimed at summarising current status,
identifying what needs to be done and what Linaro should be doing:
https://wiki.linaro.org/LEG/Engineering/Virtualization/201302MiniSummit
* implemented support for variable-length qdev array properties in QEMU
and sent out patch for this plus vexpress fixes which use it
* investigated how to run the Linux Test Project syscall tests under
QEMU to improve the quality of our linux-user mode testing
(wrote up a howto for the QEMU wiki: http://wiki.qemu.org/Testing/LTP
many thanks to fabo for whipping up a Jenkins job to run these nightly)
* couple of trivial linux-user patches as example low-hanging fruit
revealed by the LTP test results
-- PMM
== Progress ==
* Buildbots
- Setting up Chromebook with a buildbot
- http://llvm.org/viewvc/llvm-project?view=revision&revision=174421
- http://lab.llvm.org:8011/builders/clang-native-arm-cortex-a15
- 1h25min builds (3x faster than Pandas)
* LAVA
- Trying LLVM builds on Arndale
- GCC segfaults:
- "The bug is not reproducible, so it is likely a hardware or OS problem."
* Distributed Panda
- Setting up the boards, getting distcc on them
- Speedup is squat (1.9%) because of too many parallel linking
- Need to add LD to a group with less resources on Ninja
* Vectorization
- Reviewing some patches, discussing implementation details
- Vectorization vs. O3 speedup: 2.5x ~ 3.0x (on both ARM and x86_64)
- Working on global structure alias analysis
* LLVM
- Campaigning for integrates-as to be turned on by defaultfor ARM
- ARM seems interested in fixing the eventual bugs
- Adding 'armv7l' triple to default to 'cortex-a8'
- http://llvm.org/viewvc/llvm-project?view=revision&revision=174466
- Campaining for buildbots to use CMAke/Ninja
* EuroLLVM
- Followup meeting, securing funding
== Plan ==
* Change buildbots to not "make clean", try cmake
* Try to reduce parallel linking flood, try one more panda
* Continue with global structure alias analysis
* Try to setup a test-suite buildbot
== Progress ==
* Welcomed Kugan to the team working on GCC
* Welcomed James Elliott to the team as project manager
* Found Cortex-A9 bootstrapping issue raised as PR56184
* Fixed build issues in GCC and GDB.
* Patch reviews.
== Next week ==
* Investigate PR56184 further.
== Future ==
* Run HOT/COLD partitioning benchmarks
* Analyse ARM results
* On x86_64 to see what the actual benefit we could get
* fix-gcc-multiarch-testing
* Come up with strawman proposal for updating testsuite to handle
testing with varying command-line options.
--
Matthew Gretton-Dann
Toolchain Working Group, Linaro
hi,
i am using linaro toolcahin binaries to execute simple .c file , so that it creates ARM executable output file i can run on Linaro installed on Hackberry board.
this are the all steps i follwed from beginnng..
please let me know if i am missing something here..
1. i have downloaded gcc for ubuntu from this link https://launchpad.net/linaro-toolchain-binaries/+milestone/2012.04
2. on ubuntu, i did tar xjf gcc-linaro-arm-linux-gnueabi-2012.04-20120426_linux.tar.bz2 export ARM_CROSS_TOOLS=pwd/gcc-linaro-arm-linux-gnueabi-2012.04-20120426_linux/bin/arm-linux-gnueabi- export ARMCC=${ARMEL_CROSS_TOOLS}gcc
& then
$ARMCC hello.c
it created a.out (which is simple executable file and not ARM executable)
What i am doing wrong here? i am not getting how do i need to configure gcc .
please revert back ASAP!
Thanks & regards,
Swati
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Hi,
It seems to me that your current toolchain releases [1] don't default to a
multiarch layout. Am I looking in the right place? Do you anticipate enabling
multiarch in the future? Is doing this currently blocked by limitations in
tools such as crosstool-ng?
1. http://releases.linaro.org/13.01/components/toolchain/binaries
Thanks,
Christopher
--
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by
the Linux Foundation
As of revision 174322, AArch64 back-end is compiled by default on all
architectures.
This means it'll be built and tested on all platforms and it'll get heavy
bombardment of the changes in the front- and middle-end without breaking
for too long.
Thanks Tim for the hard work!
cheers,
--renato
== Progress ==
* Boehm GC AArch64 support:
- Added information to the libatomic_ops patch, stiil under review
- backported AArch64 support to the GCC boehm-gc, test on-going
* Libunwind AArch64 support:
- started.
* Aarch64 porting meeting:
- request to move to eglibc 2.17 (done by Zhenqiang)
* LCA13:
- hotel and plane booked
== Next ==
* Validate boehm-gc GCC integration
* Libunwind AArch64 support
== This Week ===
* Joined Linaro, had welcome meeting with Matt
* Set up my office at home
* Laptop purchased and had it ready for development
* Exchanged emails with various people for getting started and read a lot
of administrative material on the wiki pages.
* Registered for the connect, figured out visa process and sent request to
Arwen for required documents.
* Attended Weekly toolchain call, stand-up call and 1:1 with Matt.
* Started work on GDB Testing in various configurations for analysis of
current GDB status on ARM.
* Build GDB on x86_64 machine and had test suite run in local and remote
configuration.
* Suffered from a bad run of cough n fever.
== Next week ==
* Continue with Analysis of GDB status on ARM, hopefully get to access a
pandaboard remotely and setup QEMU as well.
* Apply for Hong Kong Visa for the connect.
* Visit local market to resolve pending office setup and hardware
requirements.
* More Wiki reading and getting to know different processes at Linaro.
* 5th February public holiday in Pakistan.
Summary:
* Linaro toolchain binary 2013.01 release
* Move to using EGLIBC 2.17 in aarch64 build
Details:
1. Linaro toolchain binary.
* Document on how to do release test.
* Help Bero on 2013.01 release.
* Investigate lp:1107659. Crosstool-ng upstream has a workaround fix.
2. Move to using EGLIBC 2.17 in aarch64 build.
* Update Linux version to 3.7.0 since eglibc 2.17 configure
"checking for kernel header at least 3.7.0".
* Migrate local patches for eglibc 2.16 to 2.17 and update the config to 2.17
* Package build is OK. Test on simulation is ongoing.
3. Collect SPEC performance for different branch costs.
* The total results wave less than 0.5%.
* Three cases have 1-2% regression for smaller branch cost. Will
analyze the detail impact for the three cases.
Plan:
* Investigate coremark performance impact for different branch costs.
* Commit EGLIBC 2.17 changes
Planed leaves:
* Feb. 9 - 15: Chinese Spring Festival.
Best Regards!
-Zhenqiang
