- linaro-toolchain - lists.linaro.org

by Rob Savoye

== Progress == * Got Odroid U2 board up and doing builds. Stock hardkernel kernel images are unstable, keeps remounting USB drive read-only under a load. * Got the new support for branches and revisions for any toolchain component working in Cbuildv2. * Attended the 30th anniversary of the GNU project in Boston over the weekend. == Plan == * Continuing with Jenkins/Cbuildv2/Git integration. * Try to work around problem with importing test results. * Compare automated tarballs with the current release tarballs. * Get Odroid U2 working reliably. * Get Odroid X2 working. == Issues == * Upgrading Gnome on my laptop destroyed my desktop to where nothing worked, limiting productivity for a few days.

12 years, 7 months

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MPFR build issue

by Kugan

Hi, With respect to the MPFR build error, (http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58578), is movs appropraite as shown below? When _err1 is negative the condition is evaluating it to be true. /* C Codeoes */ if (_err1 > 0) { /* working code */ .loc 1 67 0 cmp r3, #0 ble .L6 /* not working code*/ .loc 1 67 0 movs r3, r3, asl #1 ble .L6 When I looked at the ARM documents, I found the following Condition flags ------------------- If S is specified, for MOV instructions: 1. update the N and Z flags according to the result 2. can update the C flag during the calculation of Operand2 (see Flexible second operand) 3. do not affect the V flag. And also le Signed less than or equal. (Z==1) || (N!=V) Does this means we cant movs at comparision. http://gcc.gnu.org/ml/gcc-patches/2013-02/msg00861.html added this and I guess it is intentional. Am I missing anything here? Thanks, Kugan

12 years, 7 months

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[ACTIVITY] 23-27 September 2013

by Christophe Lyon

== Progress == * AArch64 frame grows downward: no feedback yet. * Disable-peeling: trying to tune the vectorizer cost model so that it is less aggressive. * AArch64 bootstrap failure: build it still on-going, so still hoping to reproduce it. * GCC trunk cross-validation: - aarch64 added - looking at how to handle compute farm jobs timeouts nicely * Backports: - launched several merge requests for a few individual patches. == Next == * AArch64 frame grows downward: continue * Disable-peeling: continue * Backports : spend little time on checking the results

12 years, 7 months

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[Activity] Week 39

by Charles Baylis

Progress . worked on cleaning up arm config in gcc (TCWG-201) . not really convinced I have a way to properly test the result . a bit of bug triage . a bit more on the 4.7 segfault bug (lp1215925) Plans . ping the arm*gnueabihf testsuite patch . finish the config clean up . revisit 4.7 segfault, now I have more suggestions from Matt

12 years, 7 months

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[ACTIVITY] Week 39

by Yvan Roux

== Issues == * None. == Progress == * Misc: - Installed Saucy on Chromebook. * LRA on AArch64: - Committed RTL analyser patch. - Committed patch which switch on LRA on AArch64. * LRA on AArch32: - Committed patch which fix failing assembly scan test with LRA. - Committed LRA register notes DEAD and UNSUSED handling in LRA. - Bootstrapped GCC with LRA on Chromebook. - Analysis of testsuite results ongoing. == Next == * Continue on LRA.

12 years, 7 months

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[ACTIVITY] 23-27 September 2013

by Venkataramanan Kumar

Short week (Tuesday and Wednesday went to US consulate Chennai for VISA interview and document processing). == Progress == * gprof support for aarch64 Re-based and tested. Asked permission for upstreaming in trunk. Gibc patches are upstreamed. Thanks to Marcus. * Aarch64 Boot strap failure. Tried to reproduce it in V8 model. Build failing in stage 1 for me. * 1-1 Meet with Christophe. == Plan == * Back to libssp support. * Aarch64 boot strap issue. == Issues == * LTO/PGO work stopped now since libssp support priority is more. Misc ------ October 2 India Holiday.

12 years, 7 months

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[ACTIVITY] 23 - 27 September 2013

by Kugan

== Progress == * MPFR and GMP Build error with Latest 4.8 Release - Reproduced MPFR error with a simplified testcase - Found the buggy codesequence and the patch that introduced it. - Looking at solution for this - Reprdouced GMP error with -march=armv7-a and -mthumb - continuing with the invetigation * 64bit division - Looked at current libgcc implementaion and studied the alorithm. * Addressing patch review - Posted second patch for zero/sign extension * spec2k comparison between ARM and x86 - Ran spec2k with various options to validate code analysis == Plan == * Continue with spec2k comparison between ARM and x86 * Continue 64bit division * Fix GMP and MPFR build error

12 years, 7 months

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[ACTIVITY] 23 - 27 September 2013

by Omair Javaid

== Progress == (TCWG-270) * Tested GDB Process Record/Replay and reverse debug feature for arm. * Thumb32 support patch along with a couple of bug fixes made huge improvement in testsuite results. (TCWG-267) and (TCWG-269) * Reviewed all previous submitted patches and wrote response patch updates. * Implemented gdb/testsuite/gdb.dwaf2/dw2-error.exp using dwarf assembler. (TCWG-268) * Submitted patch for failing gdb/testsuite/gdb.dwaf2/dw2-case-insensitive.exp (TCWG-272) * Re-viewed and verified gdb bugs reported on launchpad and created JIRA cards where required. (TCWG-265) * Generated Test data to test instruction decoding in arm specific code of gdb process record/replay. (TCWG-280) * Reviewed previously submitted patches related to gdb process record syscall support for arm targets. * Submitted US Visa application for processing and got appointment for Visa Interview. * Reviewed all open JIRA cards and created new ones for future progress on GDB == Plan == (TCWG-270) * Submitt patch for bug fixes and show testsuite improvement with bug fixes and thumb32 patch. * Do more testing and analyse failures and try to fix them if possible. * Verify issues reported by maintainers in old arm instruction decoding code. (TCWG-267), (TCWG-268) and (TCWG-269) * Update gdb/testsuite/gdb.dwaf2/dw2-error.exp as asked by gdb maintainers. * Ping or Send response to comments. (TCWG-280) * Test syscall support with old patch and make changes if required. * Travel to Islamabad on Tuesday to attend US visa interview early morning Wednesday.

12 years, 7 months

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[ACTIVITY] Week 39

by Zhenqiang Chen

== Issues == * None == Progress == * Update Conditional compare (CCMP) patch according to community comments. * Investigate how to generate CCMP to support more than two compares. - Investigate ifcombine to create more CCMP opportunities. - Enhancing phiopt to handle CCMP case like: if (a == 0 && b > c) return 0 return a; == Plan == * Continue on CCMP to support more than two compares. == Panned leaves == * Oct. 1-7: National Day of China holiday

12 years, 7 months

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[ACTIVITY] Week 39

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

12 years, 7 months

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[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

12 years, 7 months

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[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.

12 years, 7 months

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[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

12 years, 7 months

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[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.

12 years, 7 months

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[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

12 years, 7 months

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[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

12 years, 7 months

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[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.

12 years, 7 months

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[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.

12 years, 7 months

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[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

12 years, 7 months

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[ACTIVITY] 16 -20 September 2013

by Kugan

== Progress == * Addressing patch review - zero/sign extension preparation patch accepted. - Christophe is helping to commit. * spec2k comparison between ARM and x86 - Looked at conditional code generation related code in gcc - looked at ifcvt and code in arm.md and arm.c to understand the heuristics that dictate how much to conditionalize and what is causing some of the problems I am seeing. == Plan == * Continue with spec2k comparison between ARM and x86 * Start looking at 64bit division

12 years, 7 months

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[ACTIVITY] 16 -20 September 2013

by Venkataramanan Kumar

== Progress == * gprof mcount support in glibc Tested the patch and posted in libcports. * Fix signal handler issue in glibc for profiling Found issue with time profiling. Time profiling is obtained by setting up SIG_PROF interrupt and kernal calls signal handler with interrupted pc address. But in glibc, aarch64 port does not register the signal handler properly. Fixed and sent a patch to team for review. Tested the patch and posted in libcports. * Linaro connect - VISA application. Applied VISA online and scheduled interview with US consulate. * Libssp support for AArch64 TCWG 23: Timeout issues disappears after increasing TIMEOUTFACTOR Base glibc test results are captured in wiki https://wiki.linaro.org/WorkingGroups/ToolChain/ReleaseAndInfrastructure/Cr… * 1-1 meeting with Matt and Christophe. == Plan == * Post RFC patch for Libssp support for AArch64 in GCC * Continue testing the patch for Libssp support for AArch64 in GCC and glibc TCWG-23. == Issues == * LTO/PGO work stopped now since libssp support priority is more. Misc ------ Tuesday and Wednesday in Chennai to attend US VISA interview.

12 years, 7 months

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[ACTIVITY] Week 38

by Renato Golin

== Progress == * Trying to profile ImageMagick on A9 - perf is broken on Exynos 4, used Panda - Linaro image doesn't have all PPAs - Clang code 10% worse than GCC on some operations - Code doesn't look that bad, but Clang on x86 is faster - Will look into that next week Background - Meetings at ARM, Linaro - Omair in Cambridge - Patch review, fixing bots, discussions, etc - Moved from Ubuntu to Mint 15, using Gnome Shell == Plan == * Finally look into the profiler output * Increase the profiling to other image operations * Profile Phoronix results?

12 years, 7 months

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arm-linux-gnueabihf kernel headers out of date?

by Christopher Covington

Hi, In building some code (CRIU) that includes linux/if_packet.h for x86_64-linux-gnu, arm-linux-gnueabihf, and aarch64-linux-gnu, some discrepancies popped up relating to whether the TPACKET_V3 structures were defined. It looks like the headers shipped with the 13.08 arm-linux-gnueabihf toolchain do not define them, implying kernel headers older than October 2012. The aarch64-linux-gnu toolchain on the other hand does have them defined. If this analysis is correct, can I expect the kernel headers in the 32-bit toolchain to be updated in the near future or should I really be generating and referencing my own kernel headers? Thanks, Christopher -- Employee of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by the Linux Foundation.

12 years, 7 months

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[ACTIVITY] 9-13 Sept 2013

by Christophe Lyon

== Progress == * Releases 4.7 and 4.8 2013.09 after finished a few backports * GCC trunk cross-validation: - improving reporting * First attempts at using cbuildv2 * Aarch64: Analyse code generation when frame grows downward. * LCU13: Booked plane and hotel. == Next == * Aarch64: continue 'frame grows downward' 'analysis * Disable-peeling: resume investigation

12 years, 7 months

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[ACTIVITY] 9 - 13 September 2013

by Omair Javaid

== Progress == * GDB Record and Replay (TCWG-197) Debugged code for an exception coming up in gdb code after applying Thumb32 patch. * Travel to UK on Wednesday night stopped in UAE for Thursday and Friday. * Holiday on Thursday and Friday. == Plan == * Working from Linaro Cambridge from Monday till Friday * GDB Record and Replay (TCWG-197) Fix issues Submit patch upstream. * Meetings with team mates in Cambridge and visit to ARM.

12 years, 7 months

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[ACTIVITY] Week 37

by Yvan Roux

== Progress == * 4.8 2013.09 backports: - Finished ongoing reviews. * LRA: - Fixed and refactored rtl analyser patch, waiting fro upstream green light - Reduced AArch64 testcase, and find the root cause of the issue: Only 64 bits of callee saved registered v8-v15 are preserved, larger values has to be handle by the caller, which not the case with LRA. Working on the issue with LRA maintainer. * LCU'13 - Hotel and flight booked == Next == * Continue on LRA

12 years, 7 months

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[ACTIVITY] Week 37

by Zhenqiang Chen

== Issues == * None == Progress == * Prepare Linaro toolchain binary 2013.09 release - Create linaro-prebuilt-sysroot-2013.09. - Update local patches and all Linaro samples to use eglibc-linaro-2.18-2013.09. * Update Conditional compare (CCMP) according to community comments. Current method is: - In fold-const, if HAVE_conditional_compare, set LOGICAL_OP_NON_SHORT_CIRCUIT to true. - Identify CCMP during expanding. A CCMP candidate is a BIT_AND_EXPR or BIT_IOR_EXPR, whose operators are compares. - Add a new op in optab to expand the CCMP to RTL, e.g. and_scc_scc/ior_scc_scc in ARM. - Testing is ongoing. == Plan == * Send out the updated conditional compare patches for review. == Panned leaves == * Sept. 19-21: Mid-Autumn Festival * Oct. 1-7: National Day of China holiday

12 years, 7 months

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[Activity] Sept 9-15

by Rob Savoye

== Progress == * Set up a GCC git mirror on git.linaro.org. now at ssh://LOGIN@git.linaro.org/srv/git.linaro.org/git/toolchain/gcc.git. The two Linaro branches most people are interested in are now 'linaro-4.7-branch' (updated every 30 minutes from launchpad), and 'linaro-4.8-branch' updated every 10 minutes from subversion. * Tweaked Cbuildv2 & Jenkins to work with GIT repositories and branches as well as source tarballs. * Jenkins now "bootstraps" a cross compiler by building the native GCC, and then using that to compile the cross GCC. * Got aarch64-none-elf building with newlib via Cbuildv2. * Source and binary tarball release support in Cbuildv2 now works. I've had to change the naming convention to handle daily automated builds, and added the commit ID of HEAD for git based builds. * Almost got Canadian crosses building via Cbuildv2. * Continued work on Jenkins/Cbuildv2 integration. * Cbuildv2 now works on Fedora as well as Ubuntu. * Survived major 100+ year flood. Got to watch a dam overflow, kindof cool, all the roads in and out of this area have been closed for days, most of the bridges are gone. Been busy all weekend evacuating people, car accidents, normal disaster area stuff. I worked Katrina relief, never thought I'd see a flood in the mountains. == Plan == * Continuing with Jenkins/Cbuildv2/Git integration. * Get testing results from Jenkins builds imported via Junit conversion. * Compare automated tarballs with the current release tarballs. * Get Jenkins to upload binary & source tarballs to snapshots.linaro.org. * Add support for using specific commit IDs with Git and Cbuildv2. * Finish getting Canadian Cross builds working in Cbuildv2. * Odroids should arrive (when the roads open...) Monday, install Ubuntu and do some tests to see if it's a good platform. == Issues == * Flooding...

12 years, 7 months

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[ACTIVITY] Week 37

by Kugan

== Progress == * Addressing patch review - Woking on vrp based zero/sign extension elimination based on feedback - Reworked the patch based and posted the first patch - Speck2k benchmarking in progress for second patch and will post once finished. * spec2k comparison between ARM and x86 - More benchmarks analysed. - Started with the report. Plan to send in next couple of days. - Created more reduced test cases. == Plan == * Continue with spec2k comparison between ARM and x86 * Start divmod work

12 years, 7 months

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[ACTIVITY] Week 37

by Will Newton

== Progress == * Committed glibc realloc test * Committed glibc malloc integer overflow patches and requested CVE number * More work on glibc malloc benchmarking * Investigated AArch64 gdb issue and submitted a patch * Investigated gas NEON issue and submitted a patch == Issues == * None == Plan == * Visit Linaro in Cambridge from Tuesday to Thursday (see you there!) * Submit glibc malloc benchmark * Get benchmark numbers for tweaked memcpy * Start glibc pointer guard work -- Will Newton Toolchain Working Group, Linaro

12 years, 7 months

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[ACTIVITY] Week 37

by Renato Golin

== Progress == * Patches - Committed lzma fix for cross-compilation - Split ARMv7 fixes in three patches, committed - Reviewed many ARM patches * ImageMagick benchmark - Using IM's convert to test compiler performance - LLVM seems pretty good on x86_64, par on A15 and behind on A9 when compared to gcc 4.7 - http://people.linaro.org/~rengolin/llvm/scripts/ * Profiling - Found a serious bug in LLVM when emitting profile information - mcount segfaults on prelude, luckily only on x86. :D * Phoronix - Found out that our problems with Phoronix were not unique - Might need a bit more of work to get the build scripts changed - And A bit more to get the data out of the reports == Plan == * Profile IM's convert on A9 (after finding out why it's not generating gmon.out) * Hoping to find low-hanging SLP-vectorizer fruits... fingers crossed! * Try something on Jenkins, hopefully it'll be easy to get Phoronix and ImageMagick running on it

12 years, 7 months

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[ACTIVITY] report week 37

by Peter Maydell

Progress: * "aarch64 preparation" patchset now in upstream QEMU master. For clarity: this doesn't enable anything by itself, but it's an important foundation for the work being done by people including Linaro, SuSE and Virtual Open Systems, and getting it upstream is both helpful for that work and an indication of progress. * posted a new version of mach-virt patchset (with a PL011 UART) * various planning meetings/calls * put together a "testing" quality branch that integrates the "-cpu host", "mach-virt" and OVS work on KVM v8 control: git://git.linaro.org/people/pmaydell/qemu-arm.git aarch64-kvm -- PMM

12 years, 7 months

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[ANNOUNCE] Linaro GCC 4.8 and 4.7 2013.09 released

by Christophe Lyon

The Linaro Toolchain Working Group is pleased to announce the release of both Linaro GCC 4.8 and Linaro GCC 4.7. Linaro GCC 4.8 2013.09 is the sixth release in the 4.8 series. Based off the latest GCC 4.8.1+svn202157 release, it includes performance improvements and bug fixes. Interesting changes include: * Updates to GCC 4.8.1+svn202157 * Improved AArch64 support (instructions, intrinsics). * Backports for bug fixes (PR56315,PR46975,PR57708,PR56979,PR57431,PR58041). Linaro GCC 4.7 2013.09 is the eighteenth release in the 4.7. Based off the latest GCC 4.7.4+svn202210 release, this is the fifth release after entering maintenance. Interesting changes include: * Updates to GCC 4.7.4+svn202210 The source tarballs are available from: https://launchpad.net/gcc-linaro/+milestone/4.8-2013.09 https://launchpad.net/gcc-linaro/+milestone/4.7-2013.09 Downloads are available from the Linaro GCC page on Launchpad: https://launchpad.net/gcc-linaro More information on the features and issues are available from the release pages: https://launchpad.net/gcc-linaro/4.8/4.8-2013.09 https://launchpad.net/gcc-linaro/4.7/4.7-2013.09 Mailing list: http://lists.linaro.org/mailman/listinfo/linaro-toolchain Bugs: https://bugs.launchpad.net/gcc-linaro/ Questions? https://ask.linaro.org/ Interested in commercial support? Inquire at support(a)linaro.org

12 years, 8 months

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help testing/upstreaming: [PATCH] libatomic is now supported on AArch64

by Michael Hudson-Doyle

--- Hi all, The reason for my most recent question on the list was that I was investigating if gccgo targeting aarch64 would work. It turns out that it's really close (to building and working for trivial programs, at least): it depends on libatomic which explicitly does not support AArch64, but when you try to build it, it appears to work fine. Hence this patch. Would it be possible for someone to: a) test this for me, or b) explain to me how to test it myself, and/or c) send this upstream, or d) offer advice on how to get it upstream myself? I'd sort of prefer the "explain to me" versions as I also want to run the gccgo/libgo tests :) If someone knows why libatomic unsupports aarch64, that'd be even better (maybe it's just that the sync intrinsics it uses weren't supported by gcc on aarch64 at the time?). Cheers, mwh libatomic/configure.tgt | 5 ----- 1 file changed, 5 deletions(-) diff --git a/libatomic/configure.tgt b/libatomic/configure.tgt index b9e5d6c..7eaab38 100644 --- a/libatomic/configure.tgt +++ b/libatomic/configure.tgt @@ -95,11 +95,6 @@ fi # Other system configury case "${target}" in - aarch64*) - # This is currently not supported in AArch64. - UNSUPPORTED=1 - ;; - arm*-*-linux*) # OS support for atomic primitives. config_path="${config_path} linux/arm posix" -- 1.8.1.2

12 years, 8 months

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running the tests after building a cross-gcc

by Michael Hudson-Doyle

Hi, Thanks to the advice from this list I've managed to build GCC targeting aarch64 (thanks!). Is there some way I can now run the tests in a Foundation model? I don't really know how this would work -- I guess using aarch64-unknown-linux-gnu-gcc etc to build binaries, scp them onto the model, run them and parse the output. Is this the sort of thing that people do? Cheers, mwh

12 years, 8 months

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[ACTIVITY] Week 36

by Yvan Roux

Short week (2 days off). == Progress == * 4.8 2013.09 backports: - Reviewed and committed several * Wiki cleanup: - Started to review some pages. * LRA: - Refactored the two posted patches in one. == Next == * Backports and Releases. * LRA * Book hotel/plane for Connect

12 years, 8 months

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[ACTIVITY] 2 - 6 September 2013

by Venkataramanan Kumar

== Progress == * Libssp support for AArch64 TCWG 23: NFS mounted from build system into the model and ran cross eglibc tests for a fresh SVN checkout. Had some failures. Looking at library missing issues. * Backports Completed backports and merge requests. Yvan helping out to commit 201411. == Plan == * Post RFC patch for Libssp support for AArch64 in GCC * Continue testing the patch for Libssp support for AArch64 in GCC and glibc TCWG-23. == Issues == * LTO/PGO work stopped now since libssp support priority is more. Misc ------- 9-Sep-2013 AMD Bangalore holiday.

12 years, 8 months

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[ACTIVITY] 2 - 6 September 2013

by Kugan

== Progress == * spec2k comparison between ARM and x86 - More benchmarks analysed. - Plan to complete first iteration for spec2k-int benchmarks this week * Addressing patch review - Woking on vrp based zero/sign extension elimination based on feedback - Started addressing comments for divmod optimization == Plan == * Continue with spec2k comparison between ARM and x86 * Wiki Cleanup

12 years, 8 months

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[ACTIVITY] 2 - 6 September 2013

by Omair Javaid

== Progress == * GDB Record and Replay (TCWG-197) Completed writing most of gdb process record Thumb32 instruction handling code. Created test data for various types of Thumb32 instructions Performed testing fixed some coding mistakes and bugs. * Visa Application Filled US visa application online for LCU13. Prepared US visa documentation to file visa immediately after coming back from UK. Made travel arrangement for UK visit. == Plan == * GDB Record and Replay Integrate gdb process record thumb32 support patch with gdb source and perform testing. Submit patch upstream. * Travel and Visas Collect travel information and travel to Cambridge UK by Sunday. * Days Off Thursday and Friday off for a small visit to Dubai before reaching UK on Sunday.

12 years, 8 months

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[Activity] Sept week 1

by Rob Savoye

== Progress == * Started setting up a GCC git mirror on git.linaro.org. * Tweaked Cbuildv2 & Jenkins to work with GIT repositories as well as source tarballs. * Jenkins now "bootstraps" a cross compiler by building the native GCC, and then using that to compile the cross GCC. * Got aarch64-none-elf building with newlib via Cbuildv2. * Finished binary tarball release support in Cbuildv2. * Almost got Canadian crosses building via Cbuildv2. * Continued work on Jenkins/Cbuildv2 integration. * Added ccache support to Cbuildv2. * Cbuildv2 now works on Fedora as well as Ubuntu. == Plan == * Finish setting up GCC git repository with Linaro branches fetched from svn and bzr. * Add support for building source tarballs. * Continuing with Jenkins/Cbuildv2 integration. (waiting for GCC git repository to be complete) * Get Jenkins to upload binary & source tarballs to snapshots.linaro.org. * Finish getting Canadian Cross builds working in Cbuildv2. == Issues == * Still waiting for Odroid hardware to get shipped. * Waiting for git-bzr-ng to be installed on git.linaro.org. * Git-svn is incredibly slow on initial fetch. (fetching the linaro/gcc-4_8-branch has been running over 24 hours)

12 years, 8 months

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[ACTIVITY] Week 36

by Will Newton

== Progress == * Worked on getting glibc benchtests into shape for string functions * More wiki cleanup (done?) * Backports and release of eglibc 2.18 2013.09 * Booked Cambridge trip for Sept 17th == Issues == * None == Plan == * More improvements to glibc benchtests for strings/malloc if possible * Get back to malloc and stack guard work -- Will Newton Toolchain Working Group, Linaro

12 years, 8 months

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[ACTIVITY] 2-6 Sept 2013

by Christophe Lyon

== Progress == * Backports for 2013.09: - committed several - reviewed - submitted a few new ones * Wiki pages cleanup * GCC trunk cross-validation: - need to work around results instabilities caused by incomplete threads support in QEMU. == Next == * Release 2013.09 next week after completing the latest backports. * Resume investigation on perfomance regression with peeling disabled. * GCC trunk validation: work on reporting * Book hotel/plane for Connect

12 years, 8 months

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[ACTIVITY] Week 36

by Renato Golin

== Progress == * Cross-compilation - Cleaning up v7A cores and features in Clang - Writing document on how to cross-build using Clang/LLVM - Creating bugs to deal with the issues found - Adding LZMA library dep to cross-build in LLVM - https://cards.linaro.org/browse/TCWG-200 * Divmod 64 - Long discussions about libcalls using registers with ARM - Trying to revive my old patch due to future improvements from ARM - It should also help future improvements on value_in_regs attributes, as well as other library calls in registers or with multiple return values - https://cards.linaro.org/browse/TCWG-199 * Maintenance - Patch reviews, discussions, as usual - Investigating breaking test-suite bot - Added two pandas to the lab for general use == Plan == * See that all patches created this week get through * Have a look at automating Phoronix (via Jenkins) * Find SLP-vectorizer regressions on ARM and fix them

12 years, 8 months

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[ACTIVITY] report week 36

by Peter Maydell

Progress: * rebased and fixed last issues in aarch64 prep patchset, sent it out with a note that I'm going to put it in a pullreq to be applied unless any further comments come up in review * reviewed Christoffer's GIC save/restore patchset * reviewed and cleaned up toolchain's QEMU wiki pages -- PMM

12 years, 8 months

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[ANNOUNCE] Linaro eglibc 2.18 2013.09 released.

by Will Newton

### About Linaro eglibc Linaro eglibc is a release of the eglibc C library with bug fixes and enhancements for ARM platforms. eglibc is a variant of the GNU libc designed to work well on embedded systems. ### Linaro eglibc 2.18 2013.09 The Linaro Toolchain Working Group is pleased to announce the 2013.09 release of Linaro eglibc 2.18, the first release in the 2.18 series. This release is based on the latest upstream eglibc 2.18 stable branch, but with additional features and bug fixes. #### Additional Features * None #### Bug Fixes * Fix for clone(2) built for Thumb2. ### Source #### Release Tarball * https://releases.linaro.org/13.09/components/toolchain/eglibc-linaro #### Development Tree * git://git.linaro.org/toolchain/eglibc.git This release was built from the `linaro_eglibc-2_18-2013_09_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

12 years, 8 months

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Two Pandas

by Renato Golin

Hi folks, Since we won't be using Pandas for buildbots any more, I decided to put them in the lab for general use. This is not LAVA or CBuild managed, and the purpose is to test, and possibly benchmark, small applications, build systems, native compilation, generated code, etc, in real hardware. For this purpose, the Pandas are great, so there you have it. There is no reservation mechanisms, but the etiquette is to "who" and "top", and if you're the only active user, go for it. Multiple users can use a single board if only testing, compiling, running code, but if someone is benchmarking, would be polite to use the other board. They're sporting a Linaro 13.03 release with kernel 3.5.0. If you need/want access to them, just let me know. cheers, --renato

12 years, 8 months

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[ACTIVITY] 26-30 August 2013

by Christophe Lyon

== Progress == * Backports for 2013.09: - updated list, assigned some to team members - submitted several requests - quite a few of them exposed dependencies, making it necessary to make several attempts. * Aarch64 frame layout: posted sample code using large frame on gcc-patches to get feedback. * Disable-peeling: resumed regression investigation. * Wiki pages cleanup * trunk validation: - continued to work on internal validation of trunk using our compute farm (build+cross validation) to help catch regressions early. == Plan == * Finish backports, sort out dependencies problems. * Disable-peeling: investigate regression * More wiki pages cleanup * trunk validation: improve reporting * install Ubuntu on Chromebook

12 years, 8 months

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[ACTIVITY] 26 -30 August 2013

by Venkataramanan Kumar

== Progress == * Libssp support for AArch64 TCWG 23: My approach to Cross testing eglibc from host failed since it needs the build directories to be shared. Mounting the image in build system and building eglic will not help as the changes will not be reflected, in the image booted in V8 model dyanamically. The test system only issues command via ssh but does not copy binary to the model. Need to try creating NFS mount from build system into the model. * Backports Lots of back porting and merging. 201624 and 201666 can be back ported together. Merge request submitted. 201406 to linaro branch. Small test case comment change. But the test case fails in linaro 4.8, but passes in trunk. It needs other revisions to be back ported, since vectorization improvement in trunk. I tried back porting all relevant versions r199402,r200394,r200600, r201282. But still fails since interface of function get_loop has changed in trunk somewhere. For 201411 look like need to hand pick and apply changes in arm.md file. since lot of changes gone in that file and simple merge will not be good. Also it may need some other revision to backport. * TCWG-209, Looked at wiki pages, Christophe assigned to me and gave some comments about updating/deleting them. == Plan == * Post RFC patch for Libssp support for AArch64 in GCC * GCC patch for gprof accepted, need to post patch in glibc. * Continue testing the patch for Libssp support for AArch64 in GCC and glibc TCWG-23. Try NFS mouting into the model. * Backport 201411 201406 from trunk. == Issues == * LTO/PGO work stopped now since libssp support priority is more.

12 years, 8 months

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[ACTIVITY] Week 35

by Zhenqiang Chen

== Issues == * None == Progress == * Conditional compare (CCMP) - Design tens of test cases to verify the codes. - Handle CCMP in vrp pass. If the compare in CCMP can be simplified, CCMP will be converted to a copy, compare or a bit operator. - Investigating to handle CCMP in jump-thread related optimization. - Investigating bootstrap issue when expanding conditional compare to optimized RTL. . It seams that there are illegal combinations of different compares since bootstrap OK if the two compares of CCMP have the same CODE. . Current check bases on function "arm_select_dominance_cc_mode". Need narrow down the root cause. == Plan == * Continue on conditional compare. == Panned leaves == * Sept. 3-6: internal meeting.

12 years, 8 months

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[ACTIVITY] Week 35

by Kugan

== Progress == * spec2k comparison between ARM and x86 - Initiated discussion and addressing the feedback - Looking at register allocation (IRA + Reload) for reduced test case and comparing with x86 - Analysed few more spec2k benchmarks * Back-porting - All the back ports are checked and reviewed. Thanks Yvan. == Plan == * Continue with spec2k comparison between ARM and x86 * Wiki Cleanup

12 years, 8 months

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