linaro-toolchain September 2013

linaro-toolchain@lists.linaro.org

14 participants
54 discussions

by Renato Golin

== Progress == * Profiling ImageMagick - Clang 3.4-svn is around 10% less performing than GCC 4.7.3 - Mainly due to recursive octree-style map/reduce of most functions, spending a lot of time before/after branches - Any optimization on that front won't fit the "Incubation" tag * Profiling EEMBC - Found 2 cases where Clang is *a lot* better than GCC 4.7.3 (pruning bmark.c, producing much smaller objects, and vectorizing telecom/autcor, which GCC can't) - Most of the time, GCC is slightly better (~5% faster, ~10% smaller, geomean) - Wrote some scripts to run any two compilers against each other, compare the results and dump the ratios in a TSV file. == Plans == * Update EEMBC Linaro image with Clang toolchain changes * Look for low-hanging fruits in EEMBC * Try comparison with GCC 4.8 and 4.9, too * Find a way to extract Phoronix results in TSV format

10 years, 7 months

[ACTIVITY] Week 39

by Will Newton

== Progress == * Checked testsuite for glibc and gcc bootstrap on aarch64 native * Released Linaro gdb 7.6.1 2013.09-1 * Submitted glibc pointer guard patch using TLS * Submitted respin of pointer guard patch using a global variable * Submitted binutils aarch64 ifunc patches for a second time * A little bit of time on malloc * Built office furniture! == Issues == * None == Plan == * Finish off pointer guard * Hopefully back to malloc -- Will Newton Toolchain Working Group, Linaro

10 years, 7 months

[ANNOUNCE] Linaro Toolchain Binaries 2013.09 released

by Bernhard Rosenkränzer

The Linaro Toolchain and Platform Working Groups are pleased to announce the 2013.09 release of the Linaro Toolchain Binaries, a pre-built version of Linaro GCC and Linaro GDB that runs on generic Linux or Windows and targets the glibc Linaro Evaluation Build. This release introduces a set of experimental (pre-alpha) crosscompilers to big-endian ARM architectures. Uses include: * Cross compiling ARM applications from your laptop * Remote debugging * Build the Linux kernel for your board What's included: * Linaro GCC 4.8 2013.09 * Linaro Newlib 2.0 2013.06 * Linaro Binutils 2.23 2013.06 * Linaro Eglibc 2.17-2013.07-2 * Linaro GDB 7.6 2013.05 * A statically linked gdbserver * A system root * Manuals under share/doc/ The system root contains the basic header files and libraries to link your programs against. Interesting changes include: * gcc updated to 4.8-2013.09 * Initial big-endian pre-alpha versions added The Linux version is supported on Ubuntu 10.04.3 and 12.04, Debian 6.0.2, Fedora 16, openSUSE 12.1, Red Hat Enterprise Linux Workstation 5.7 and later, and should run on any Linux Standard Base 3.0 compatible distribution. Please see the README about running on x86_64 hosts. The Windows version is supported on Windows XP Pro SP3, Windows Vista Business SP2, and Windows 7 Pro SP1. The binaries and build scripts are available from: http://releases.linaro.org/13.09/components/toolchain/binaries Need help? Ask a question on https://ask.linaro.org/ Already on Launchpad? Submit a bug at https://bugs.launchpad.net/linaro-toolchain-binaries On IRC? See us on #linaro on Freenode. Other ways that you can contact us or get involved are listed at https://wiki.linaro.org/GettingInvolved.

10 years, 7 months

[ANNOUNCE] Linaro gdb 7.6.1 2013.09-1 released

by Will Newton

### About Linaro gdb Linaro gdb is a release of the GNU debugger with bug fixes and enhancements for ARM platforms. gdb allows interactive debugging of C and C++ programs natively and remotely. ### Linaro gdb 7.6.1 2013.09-1 The Linaro Toolchain Working Group is pleased to announce the 2013.09-1 release of Linaro gdb 7.6.1, the first release in the 7.6.1 series. This release is based on the latest upstream gdb 7.6 stable branch, but with additional features and bug fixes. #### Additional Features * None #### Bug Fixes * Fixes for debugging on AArch64 with hardware breakpoints. ### Source #### Release Tarball * https://releases.linaro.org/13.09/components/toolchain/gdb-linaro #### Development Tree * git://git.linaro.org/toolchain/gdb.git This release was built from the `linaro_gdb-7_6_1-2013_09-1_release` tag. ### 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` * Questions? [ask Linaro](http://ask.linaro.org/). * Interested in commercial support? inquire at [Linaro support](mailto:support@linaro.org) -- Will Newton Toolchain Working Group, Linaro

10 years, 7 months

[Activity] Sept 16-22

by Rob Savoye

== Progress == * Finally got GCC 4.7 automatic updates working from launchpad. * Continuing with Jenkins/Cbuildv2/Git integration. * Added support for using specific commit IDs with Git and Cbuildv2. Also many improvements to how git branches and revisions are handled. * Worked on importing testing results from Jenkins builds, there seems to be a problem finding the .sum files when the build is complete. * Started getting new Odroid boards online running Ubuntu. == Plan == * Work on getting Canadian Cross builds working in Cbuildv2. * Finish getting Odroid boards setup. * Compare automated tarballs with the current release tarballs. * Continuing with Jenkins/Cbuildv2/Git integration. * Try to work around problem with importing test results. == Issues == * Phone and network access has been randomly down for extended periods. I assume it's flood repairs related.

10 years, 7 months

[ACTIVITY] 16-20 Sept 2013

by Christophe Lyon

== Progress == * GCC trunk cross-validation: - stabilizing reporting (dealing with thread tests giving unstable results when run under qemu, timeouts caused by overload of the compute farm, ....) - adding aarch64 * Backports: - updated list (57 candidates for 4.8-2013.03), discussed prioritization and collaboration with ARM. - sent 1st branch-merge candidate for testing, as a preparation to partially backport a bug fix from Richard. * Aarch64 frame grows downward: - modified test-case shows that code can be better with frame grows downward than upward, depending on variables order and layout. == Next == * Backports - start backporting to prepare 2013.10 release * AArch64 frame grows downward: continue * Disable-peeling: resume work

10 years, 7 months

[ACTIVITY] Week 38

by Will Newton

== Progress == * Visit to Cambridge (Tue - Thu) and annual leave (Fri). * Applied gas fix for neon vector load/store constraints. * Applied glibc memcpy performance tweak. * Applied gdbserver AArch64 fix to trunk and branch. * Updated gdb release process and built a release candidate. * Started glibc ARM pointer guard work == Issues == * None == Plan == * gdb 2013.09 release * Various small items arising out of meetings last week * Complete glibc ARM pointer guard -- Will Newton Toolchain Working Group, Linaro

10 years, 7 months

[ACTIVITY] Week 38

by Yvan Roux

== Issues == * None. == Progress == * LRA on AArch64: - Validate Vladimir's patch to support HARD_REGNO_CALL_PART_CLOBBERED macro in LRA. - Reduced and analysed libstdc++ failures : they were due to PCH usage, but the issue was fixed with a rebase on trunk's head. - Testsuite is now clean. - Waiting for my rtl analyser patch to be accepted. * LRA on AArch32: - No more libstdc++ failures, they were PCH related too. - One more issue in ARM mode testsuite, related bad REG_NOTES info after LRA pass. - Reduced failing Thumb testcase. == Next == * Continue on LRA.

10 years, 7 months

[ACTIVITY] 16 - 20 September 2013

by Omair Javaid

== Progress == * Spent week in Linaro's Cambridge office, had meetings with team mates. * Visited ARM office in Cambridge and met toolchain team there. * Submitted patch for GDB Record and Replay thumb32 support upstream. * Reviewed and reproduced gdb bugs reported on launchpad and changed their status according. * Reviewed previously submitted gdb patches and replied to comments if required. * Reviewed x86 record syscall code in GDB for adding support for recording ARM syscall record. * Updated JIRA cards or added new issues against bugs or features. == Plan == * Progress on record and replay feature by testing instruction set support. * Review all open JIRA cards for GDB * Work on getting previous patches committed or resubmit new ones. * Submit US visa application for LCU13.

10 years, 7 months

[ACTIVITY] Week 38

by Zhenqiang Chen

== Issues == * None == Progress == * 2 day off on Chinese Mid-Autumn Festival * Update conditional compare (CCMP) patch according to community comments. * Work out a patch to fix PR 58423. * Prepare LCU'13 Visa and hotel. == Plan == * Continue on CCMP. == Panned leaves == * Sept. 24 AM: US Visa. * Oct. 1-7: National Day of China holiday

10 years, 7 months

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linaro-toolchain September 2013