- linaro-toolchain - lists.linaro.org

by Zhenqiang Chen

== Issues == * None == Progress == * Commit the fix for lp:1243022 on trunk. * Backporting r203603, r204247 and r203267 to Linaro gcc 4.8. * Updating CCMP patch according to comments. * Collect spec2K result for CCMP. - Overall there is no regression and no improvement. - 175.vpr is sensitive to branch cost. Smaller branch cost will lead to regression for it even with CCMP. * Investigate bare metal arm-none-eabi A profile multilib build. - Need fix the conflict with current multilib support for arm-linux-gnueabihf - Need scripts and config update to meet the check of --with-multilib-list=aprofile - A reference build is shared at http://cbuild.validation.linaro.org/snapshots/aprofile-baremetal.tar.bz2 == Plan == * Continue on CCMP. * Update Linaro crosstool-ng for bare metal A profile multilib build.

11 years, 8 months

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[ACTIVITY] 21 - 25 October 2013

by Omair Javaid

== Progress == (TCWG-266), (TCWG-270), (TCWG-250), (TCWG-280) and (TCWG-288) * Arm process record: - Created Patches for all fixes and features. - Performed testing in arm native and remote configuration. - Performed regression testing on arm and x86. - Submitted all fixes in three patch series. * Performed GDB testsuite run on arm and x86 to get current status with new patches. There seems to be more test passing on arm than x86 with recent patches. * Prepare for connect and travel to Santa Clara. == Plan == * Linaro Connect US 2013

11 years, 8 months

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[Activity] Oct 20-26

by Rob Savoye

== Progress == * Got Odroid XU board stable by using Arch Linux. None of the Ubuntu derived images worked more than barely. Tried a suggested hack to use cpufreq-set -g performance, which allowed a fresh install of saucy to work. Did new builds and test run. * Got remote toolchain testing working on the newly functioning Odroid board(s) and chromebook. Currently baseboard support is in a DejaGnu branch, http://git.savannah.gnu.org/cgit/dejagnu.git/?h=linaro. I'm adding the global site.exp file to Cbuildv2, so 'make check' executes tests via ssh on remote targets. * Uploaded test results of ARM native builds to cbuild.validation.linaro.org for tcwg-web. (look for version gcc-linaro-4.8-2013.10.24) * Added support to DejaGnu to use a custom port for ssh and scp. * Survived learning to use Concur for expense reports. == Plan == * Attend Connect, do presentation, go to others. * Try to work around problem with importing test results. (need to work with LAVA team for this one, will do at Connect) * Copy tarballs to snapshots.linaro.org. (need to work with LAVA team for this one, will do at Connect) == Issues == * I see to be having random stability issues with the two Odroid boards, although did manage to complete a test run of a the execute tests.

11 years, 8 months

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[ACTIVITY] Week 43 : Oct 21 - Oct 25

by Ryan Arnold

== Progress == * [PATCH][Cbuildv2/symlinks] lib/fetch.sh: Move tar unpacking to before symlink creation. * cbuild2/glibc branch - Uploaded alpha glibc support in cbuild2 (which required pretty signifcant refactoring). * Improving bounds checking of cbuild2 command line arguments == Issues == * None == Plan == * Harden cbuild2 command line support * Finish documentation/usage for cbuild2 * Integrate glibc enablement into cbuild2 master branch

11 years, 8 months

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[ACTIVITY] Week 43

by Will Newton

== Progress == * Ongoing refactoring of malloc to improve performance * Preparation for Connect == Issues == * None == Plan == * Linaro Connect US -- Will Newton Toolchain Working Group, Linaro

11 years, 8 months

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[ACTIVITY] Week 43

by Renato Golin

== Progress == * Getting ready for Connect & LLVM US * Stride Vectorization - Added some logic to detect read/write reduction, possibly not the best solution - Consolidating all discussion into a single document for easy referral - Creating several bugs (PR17673,PR17677,PR17678,PR17679,PR17680,PR17681) * Re-Vectorizing - A bug was passing the vectorizer again on an already vectorized loop (PR17662) - http://llvm-reviews.chandlerc.com/D2011, commit r193349 * Odroid XU - Running more stable now, self-hosting doing well (more than a week on 24/7) * Background - Lots of patch reviews - Lots of discussions about stride vectorization and others == Plan == * Connect US next week * US LLVM Dev Meeting the following * Will be back in 2 weeks

11 years, 8 months

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[ACTIVITY] Week 43

by Zhenqiang Chen

== Issue == * Can not attend LCU'13 due to slow US Visa process. == Progress == * Investigate lp:1243022: - Root cause: REG_INC note is lost in subreg2 pass, so ira gets wrong result in function validate_equiv_mem. - Work out a patch for community review. * Send conditional compare (CCMP) patch for community review. - Benchmark testing is ongoing. * Investigate heuristics to control ifcombine. Basically it will take branch taken probability, frequency, branch-cost and basic block reorder into account. == Plan == * Performance tuning for CCMP.

11 years, 8 months

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[ACTIVITY] Week 42

by Yvan Roux

== Issues == * None. == Progress == * 2013-10 release. - Backports and branch merges reviews. * LRA on AArch32: - Committed patch to enable LRA with the -mlra flag (disabled by default). - Created 2 bugzilla entries for Thumb and address issues. - Thumb issue work still ongoing. * Launchpad bugs: - Cleaned up a couple of them. * Misc: - Internal meetings. == Next == * Short week (2 days off and 1 travelling) * LRA

11 years, 8 months

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u-boot build problems VFP vs. soft-float

by Chris Ruehl

Hi, may you think I'm on the wrong list, no not :-) I currently build my u-boot loader using the linaro tool chain 2013.09 and run into a problem with the support for JFFS2 where the linker report VFP usage where u-boot using softfp for build. compiler options: -ffixed-r9 -msoft-float arm-linux-gnueabihf-ld.bfd: error: /opt/armhf/gcc-linaro-arm-linux-gnueabihf-4.8-2013.09_linux/bin/../lib/gcc/arm-linux-gnueabihf/4.8.2/libgcc.a(bpabi.o) uses VFP register arguments, u-boot does not when I use make USE_PRIVATE_LIBGCC=yes the problem shows up at an undefined reference fs/jffs2/libjffs2.o: In function `jffs2_1pass_build_lists': /opt/cross_build/uboot.d/u-boot-git/fs/jffs2/jffs2_1pass.c:1441: undefined reference to `__aeabi_uldivmod' arm-linux-gnueabihf-ld.bfd: BFD (crosstool-NG linaro-1.13.1-4.8-2013.09 - Linaro GCC 2013.09) 2.23.2.20130610 Linaro 2013.06 assertion fail /cbuild/slaves/oorts/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/src/binutils-linaro-2.23.2-2013.06/bfd/elf32-arm.c:7687 may someone have a closer look into it? thanks Chris

11 years, 8 months

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BE kernel / GCC-4.8 (Was run BE in lava)

by Fathi Boudra

Hi, On 4 October 2013 19:01, Maxim Uvarov <maxim.uvarov(a)linaro.org> wrote: > On 10/04/2013 07:40 PM, Victor Kamensky wrote: >> >> Hi Maxim, >> >> readl and writel are stronger version of readl_realxed and >> writel_relaxed: >> >> #define readl(c) ({ u32 __v = readl_relaxed(c); __iormb(); __v; }) >> #define writel(v,c) ({ __iowmb(); writel_relaxed(v,c); }) >> >> They just add __iormb and __iowmb, I think it is very >> dangerous thing to drop those memory barriers. I don't >> think your change is correct and/or it requires way >> better explanation. >> >> I've run into the same crash while working on 3.12-rc3 BE >> issues. In fact I saw this failure on both BE and LE and on >> old versions of BE kernels when I tried to use 4.8 gcc version >> from 13.09 release. When I fall back to 4.7 (i.e 13.04) it >> works fine >> >> I would think it is compiler issue or preexisting issue >> in the code uncovered by compiler change. Personally >> I think it is the first. Since I am chasing another problem >> I did not have time to look more deeply into the issue. >> IMHO it definitely require more digging. In mean time you >> can quickly check your current version and try another one >> if your looks as one described in this email. >> >> Thanks, >> Victor > > Ah, yes, it __raw_write has direct access and writel swaps bits. > > If it's compiler issue then it has to be simple to compare objdump disasm > output for that function. I think I've hit this issue. We use latest Linaro GCC 4.8 in the CI loop to build Arndale BE kernel. Is there a bug reported to TCWG? If not, please create one: https://bugs.launchpad.net/gcc-linaro/+filebug FYI, I'm using Linaro GCC 4.8-2013.09 (pre-built) and latest linaro-linaro (based on 3.12-rc5 with Victor's topic branch). Boot log attached. Cheers, Fathi

11 years, 8 months

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[PATCH] libatomic is now supported on AArch64

by Michael Hudson-Doyle

--- Hi, Can you review this patch for me and help me get it upstream? This is an official request for help from LEG to the TCWG, if that matters :-) 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

11 years, 8 months

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[ACTIVITY] 14-18 October 2013

by Christophe Lyon

== Progress == * Releases 4.7 and 4.8 2013.10 * Tried cbuildv2: difficult because of our company proxy, making some changes necessary to cbuildv2. Tutorial sessions in Connect will be welcome. * Started chasing a regression in armv5 targets, handed over to Kugan. * Noticed regressions in some cases with Charles' testsuite patch. == Next == Short week: Monday/Tuesday off; Friday: travelling to Connect * Look at trunks' new vectorizer cost model. * Prepare Connect

11 years, 8 months

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[ACTIVITY] 14 - 18 October 2013

by Omair Javaid

== Progress == * Short week Hujj and Eid-Al-Adha Public Holidays in Pakistan 15-17 October 2013. (TCWG-280) ARM GDB Process Record Syscall support: * Performed testing with all fixes incorporated and debugged failures in remote configuration. == Plan == (TCWG-266), (TCWG-270), (TCWG-250), (TCWG-280) and (TCWG-288) * Arm process record: Submit all fixes and updates in three patches. * Prepare for connect and travel to Santa Clara.

11 years, 8 months

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[ACTIVITY] 14 October - 18 October 2013

by Venkataramanan Kumar

Very short week was on leave 14th and 16th October (India Holidays). == Progress == * libssp glibc Glibc tests are Segmenting at dl_close_worker, when I set pointer guard. Debuging shows segfaults while expanding THREAD_GSCOPE_WAIT. My assumption is thread pointer points to TCB and after allocating 16 Bytes before that, we can set pointer gaurd at tp -16. But not sure, why it affects the pthread structure header which holds gscope_flag. Also looked at TLS_MULTIPLE_THREADS_IN_TCB, enabling it lead to __libc_multiple_threads undefined errors. == Plan == * Continue libssp support. * PGO for aarch64

11 years, 8 months

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[ACTIVITY] Oct 14-18

by Kugan

== Progress == * 64bit division for targets without 32bit div instructions - Finished the implementation - Benchmarked it - Getting ready to post RFC patch * Connect Slides - Worked on slides for connect * Vector regression in 4.8-2013.09 - Started bisecting to find the issue == Plan == * post RFC patch for 64bit division * Vector regression in 4.8-2013.09 * Connect preparation

11 years, 8 months

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[Activity] Oct 14-20

by Rob Savoye

== Progress == * Improved the format of the emails that get sent to the cbuildv2 list from commits. * Get Odroid U2 running stably, did native build on an external USB disk. Upgraded to saucy. Did full toolchain build and test run. 65 minutes per build. * Got Odroid XU board to boot, then upgraded to saucy, not very stable yet. Unlike the XU, it has a horrible lag when typing to it via ssh. * Updated chromebook to saucy, did native build and test run on external USB drive. The U2 was faster, even with an older USB 2 only drive. 192 minutes for a build. * Worked at verifying Cbuildv2 produced tarballs again since there have been many little tweaks. The few differences between Cbuildv2 produced tarballs and the official Linaro releases is documentation related. For example, Cbuildv2 doesn't build the java docs. * Did slides for Connect presentation. * Sat bagged an 900 foot ice route at over 13,000 feet. 8 mile approach. == Plan == * Try to work around problem with importing test results. (need to work with LAVA team for this one) * Copy tarballs to snapshots.linaro.org. (need to work with LAVA team for this one) * Get remote toolchain testing working on the newly functioning Odroid board(s). * Continued improvements to Cbuildv2. == Issues == * My network and landline was down to upstream repairs for a day and a half, bad timing during release week... :-(

11 years, 8 months

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Re: Sysroot of linaro linux-gnueabi toolchain

by Michael Hope

Hi Bharath. Have a look under contrib/linaro/sysroot - there's a script in there that you can fiddle with to pick a later distro. -- Michael On 16 October 2013 17:52, bhs <bharath.vegito(a)gmail.com> wrote: > Hi Michael, > > I see that linaro's build system is using pre-built sysroot as an input > to build cross-toolchain for ARM. I have a use case were we want > eglibc-2.17(sysroot from raring) along with gcc-4.7.3 crosstoolchain. I > could not any reference to the method in README file. > > How is the precise-sysroot used in building linaro toolchain binaries > created? > Thanks > Bharath > -- > This message was sent from Launchpad by > bhs (https://launchpad.net/~bharath-vegito) > using the "Contact this user" link on your profile page > (https://launchpad.net/~michaelh1). > For more information see > https://help.launchpad.net/YourAccount/ContactingPeople

11 years, 8 months

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[ACTIVITY] Week 40 : Oct 14 - Oct 18 <REDO>

by Ryan Arnold

I accidentally sent without completing my 'Progress' section. == Progress == eglibc -> glibc transition: * Investigated upstream plan to retire eglibc and the implication of losing options groups. Cbuildv2 - Random patches * [PATCH][Cbuildv2/get_source 17/17] lib/common.sh: get_source - Fix for partial match in snapshots with <package>.conf:latest set. * [PATCH][Cbuildv2/get_source 16/17] testsuite/test.sh: Add get_URL test for <repo>.git@revision. * [PATCH][Cbuildv2/get_source 15/17] lib/common.sh: Fix so that get_URL works for <repo>.git@revision. * [PATCH][Cbuildv2/get_source 14/17] testsuite:test_sources.conf|test.sh: reserve nomatch.git for testing. * [PATCH][Cbuildv2/get_source 13/17] testsuite/test.sh: Add tests for user git repos not ending in .git. * [PATCH][Cbuildv2/get_source 12/17] [test_]sources.conf: Unify behind <label>.git identifiers for all git repos. * [PATCH][Cbuildb2/get_source 11/17] New variable ${sources_conf} to replace hardcoded config/sources.conf. * [PATCH][Cbuildv2/get_source 10/17] testsuite/test.sh: Add test for tag matching an svn repo in sources.conf. * [PATCH][Cbuildv2/get_source 09/17] lib/common.sh: echo ${url} in leg that processes direct non .git repositories. * [PATCH][Cbuildv2/get_source 08/17] lib/common.sh: Fix for unknown/unmatched get_source request. * [PATCH][Cbuildv2/get_source 07/17] lib/common.sh: echo ${url} in get_source when finding a successful snapshot match. * [PATCH][Cbuildv2/get_source 06/17] lib/common.sh: find_snapshot should return list of found snapshots even on error. * [PATCH][Cbuildv2/get_source 05/17] lib/common.sh: Invoke find_snapshot as a subshell in get_source. * [PATCH][Cbuildv2/get_source 04/17] lib/common.sh: Suppress extraneous trailing whitespace in get_URL and get_source output. * [PATCH][Cbuildv2/get_source 03/17] testsuite/test.sh: Suppress stderr noise and add new failing get_source tests. * [PATCH][Cbuildv2/get_source 02/17] lib/checkout.sh: checkout should use get_srcdir to reuse code. * [PATCH][Cbuilv2/get_source 01/17] lib/make.sh: Don't continue with build if source isn't found. * [PATCH][Cbuildv2/get_source 00/17] Patchset to exhaustively test get_source code legs and fix corner cases. * [PATCH] cbuild2/lib/common.sh: redirect trace/error/warning, etc. to stderr. * [PATCH] cbuild/lib/configure.sh: Fix stamp-configure* to prevent spurious configure running. * [COMMITTED][PATCH] cbuild/lib/make.sh: Add ${builddir}/install.log from make install output. * [COMMITTED][PATCH] lib/common.sh (list_URL): correct bash keyword "locals" -> "local". * [COMMITTED][PATCH] config/gcc.conf: Add --disable-shared to stage 1 default_configure_flags. * [PATCH][test_fetch_md5sums_fix] testsuite/test.sh: Add second fetch md5sums test and always use wget -q in testsuite. * [PATCH][test_fetch_md5sums_fix] testsuite/test.sh: Always override ${local_snapshots} for tests. == Issues == * None == Plan == Objective before Linaro Connect: * Wiki/README on using cbuildv2 sources.conf and <package>.conf:latest= * git workflow document: collaborative use of git in Linaro * wiki/README on using cbuildv2 local_snapshots for specific/non-remote archives or git repositories. General Cbuildv2: * Audit usage of "local foo=`bar`; if test $?". Change to: "local foo; foo=`bar`; if test $?". - This is a known issue and very nefarious. * Investigate dryrun to use stderr 2>&1? * Port get_URL, get_source, and find_snapshot to unique behind <repo>/<branch>@<revision> return type. * Test local_snapshot overrides

11 years, 8 months

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[ACTIVITY] Week 40 : Oct 14 - Oct 18

by Ryan Arnold

== Progress == eglibc -> glibc transition: * Investigated upstream plan to retire eglibc and the implication of losing options groups. Cbuildv2 * [PATCH][test_fetch_md5sums_fix] testsuite/test.sh: Always override ${local_snapshots} for tests. [PATCH][test_fetch_md5sums_fix] testsuite/test.sh: Add second fetch md5sums test and always use wget -q in testsuite. == Issues == * None == Plan == Objective before Linaro Connect: * Wiki/README on using cbuildv2 sources.conf and <package>.conf:latest= * git workflow document: collaborative use of git in Linaro * wiki/README on using cbuildv2 local_snapshots for specific/non-remote archives or git repositories. General Cbuildv2: * Audit usage of "local foo=`bar`; if test $?". Change to: "local foo; foo=`bar`; if test $?". - This is a known issue and very nefarious. * Investigate dryrun to use stderr 2>&1? * Port get_URL, get_source, and find_snapshot to unique behind <repo>/<branch>@<revision> return type. * Test local_snapshot overrides

11 years, 8 months

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[question]multi-arch support for arm and arm64

by Zhou Zhu

Hi, We are working on userspace aarch64 and aarch32 apps and we are trying to run 32/64 mode app simultaneously. Is there any multi-arch support for mixed rootfs (has linkers/libs of both arm and arm64)? -- Thanks, -Zhou

11 years, 8 months

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[ACTIVITY] Week 42

by Will Newton

== Progress == * Relased gdb 7.6.1 2013.10 * Respin of qemu VSEL patches * Bug fixing and performance measurement on malloc == Issues == * None == Plan == * Refactor malloc to improve performance * Prepare for Connect -- Will Newton Toolchain Working Group, Linaro

11 years, 8 months

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[ACTIVITY] report week 42

by Peter Maydell

Progress: * back from sabbatical! * caught up on admin, email, etc * code review: Christoffer's GIC related patches; VSEL support in 32 bit v8; support for VBAR; integrator bugfixes; others * working on a pullreq for ARM stuff to go into QEMU 1.7 (we're now in softfreeze) Plans: * attend KVM Forum, Connect * review the SuSE aarch64-linux-user patches -- PMM

11 years, 8 months

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[ACTIVITY] Week 42

by Zhenqiang Chen

== Issues == * None == Progress == * Prepare Linaro toolchain binaries 2013.10 release - Update EGLIBC version to 2013.10 and enable-profile for AARCH64. - Generate Linaro prebuilt sysroot for arm-linux-gnueabihf. * Commit patch to Reassociate X == CST1 || X == CST2 if popcount (CST2 - CST1) == 1 into ((X - CST1) & ~(CST2 - CST1)) == 0 * Send ifcombine patch (to generate more conditional compare) for review. * Root cause pr58775. * Test conditional compare changes. - Bootstrap and no make check regression on THUMB mode. - ARM mode test is ongoing. == Plan == * Send out the CCMP patch for review.

11 years, 8 months

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[ACTIVITY] Week 42

by Renato Golin

== Issues == * Short week - school closed on Thursday - holiday Friday - several visits to the dentist - feeling poorly, I think I have shellfish allergy == Progress == * EEMBC - Identified the problem on test not vectorizing - Some ways to fix it: SLP, stride-access, unrolling - Started implementation of GEP-PHI detection for reduction variables * Odroid XU - Bot died after a few hours, not really stable - Trying again, at home, both odroids in parallel, they seem ok * Background - General reviews, etc.

11 years, 8 months

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[ANNOUNCE] Linaro GCC 4.8 and 4.7 2013.10 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 4.7 2013.10 is the nineteenth release in the 4.7 series. Based off the latest GCC 4.7.4+svn203509 release, this is the sixth release after entering maintenance. Interesting changes include: * Updates to GCC 4.7.4+svn203509 * Fix for LP #1229170 Linaro GCC 4.8 2013.10 is the seventh release in the 4.8 series. Based off the latest GCC 4.8.1+svn203510 release, it includes performance improvements and bug fixes. Interesting changes include: * Updates to GCC 4.8.1+svn203510 * Improved AArch64 support (CRC extension, improved intrinsics, gprof support) * Improved Aarch32 support (bug fixes, better code generation, improved multilib) * Backports for bug fixes (PR58578 We are aware that FSF GCC 4.8.2 was released earlier this week. However, this release happened too late in our cycle for us to use it as the basis for Linaro GCC 4.8 2013.10. The only functional difference contained in FSF GCC 4.8.2 that is not in Linaro GCC 4.8 2013.10 is a correction to a x86 test case. The source tarballs are available from: https://launchpad.net/gcc-linaro/+milestone/4.7-2013.10 https://launchpad.net/gcc-linaro/+milestone/4.8-2013.10 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/4.7/4.7-2013.10 https://launchpad.net/gcc-linaro/4.8/4.8-2013.10 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

11 years, 8 months

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[ANNOUNCE] Linaro binutils 2.23.2 2013.10-4 released

by Will Newton

### About Linaro binutils Linaro binutils is a release of the GNU binutils with bug fixes and enhancements for ARM platforms. GNU binutils is a collection of tools including the `ld` linker and `as` assembler. ### Linaro binutils 2.23.2 2013.10-4 The Linaro Toolchain Working Group is pleased to announce the 2013.10-4 release of Linaro binutils 2.23.2, the third release in the 2.23 series. This release is based on the latest GNU binutils 2.23 stable branch, but with additional features and bug fixes. #### Additional Features * AArch64 GC sections support * Support passing -mcpu=cortex-a53 and -mcpu=cortex-a57 to AArch64 gas * Support passing -mcpu=cortex-a53 and -mcpu=cortex-a57 to ARM gas * Support passing -mcpu=cortex-a12 to ARM gas * Support AArch64 CRC instructions * Support ARM CRC instructions #### Bug Fixes * Bug fix for AArch64 GOT layout * Fixed source tarball structure ### Source #### Release Tarball * https://releases.linaro.org/13.10/components/toolchain/binutils-linaro #### Development Tree * git://git.linaro.org/toolchain/binutils.git This release was built from the `linaro_binutils-2_23_2-2013_10-4_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

11 years, 8 months

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[ANNOUNCE] Linaro eglibc 2.18 2013.10 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 2013.10 The Linaro Toolchain Working Group is pleased to announce the 2013.10 release of Linaro eglibc 2.18, the second 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 * AArch64 profiling support * Optimized strlen for ARMv6T2 * Small enhancement to memcpy performance * ARM pointer encryption support #### Bug Fixes * Fix for integer overflows in memalign/pvalloc/valloc ### Source #### Release Tarball * https://releases.linaro.org/13.10/components/toolchain/eglibc-linaro #### Development Tree * git://git.linaro.org/toolchain/eglibc.git This release was built from the `linaro_eglibc-2_18-2013_10_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

11 years, 8 months

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[ACTIVITY] 7-11 October 2013

by Christophe Lyon

== Issue == * AArch64 frame grows downward: no feedback yet. == Progress == * Disable-peeling: Vectorizer cost model has been changed upstream, quick look at benchmark results show little difference between before and after the change. Need to analyze further, since I expected the regressions previously identified with my patch to appear here too. * AArch64 bootstrap failure: succesfully bootstrapped in the model. * GCC trunk validation: - improved configurability (default cpu, fpu, mode, testsuite flags are selectable) - requested feedback to build the list of desirable combinations to validate * Backports/release 2013.10 - a few more backports completed - re-trying to backport the ILP32 and refactoring series proves again to be tricky, but helped identify backports which had escaped from the list. - cbuild has disk full again * GCC Neon intrinsics testsuite: -- posted a proposition to add my executable tests to the existing framework. No feedback yet. == Next == * Make 2013.10 releases, both with the historical process and using cbuildv2, in parallel * Disable-peeling/new vectorizer cost model: analyze bench results

11 years, 8 months

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[ACTIVITY] Week 41

by Yvan Roux

== Issues == * None. == Progress == * 2013-10 release. - Backports reviews. * LRA on AArch32: - Performance analysis: Identified some regressions due to load multiple usage. - Thumb issue work ongoing. * Misc: - Internal meetings, trainings. == Next == * LRA

11 years, 8 months

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[Activity] Oct 7-13

by Rob Savoye

== Progress == * Got cbuildv2 google group setup. (https://groups.google.com/a/linaro.org/forum/#!forum/cbuildv2) * Got email notifications working for commits to cbuildv2 repository. * Continued work on release building via Cbuildv2. Source tarballs checked out OK, binaries too. Probably a few tweaks left to cover the minor differences, which are all documentation files. - Rebuild GCC dynamically so the shared libraries for libgcc and libstdc++ can go in the runtime binary tarball. - Build runtime binary tarball. - Added install script to sysroot tarball. - Make overriding the default release tag with a user supplied one work fully. * Got Odroid U2 board working again, did complete native build using cbuildv2. * Reviewed more cbuild2 patches from Ryan. * Got Jenkins building snapshot tarballs. == Plan == * Do slides for Connect presentation. * Work on duplicating the 2013.10 release via cbuildv2. * Get Odroid X2 board to boot, which it currently refuses to do. * Try to work around problem with importing test results. * Copy tarballs to snapshots.linaro.org.

11 years, 8 months

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[ACTIVITY] 8 - 11 October 2013

by Kugan

== Progress == * 4 Day week (October 7th Public Holiday) * 64bit division - Looked at libgcc division implementations - Implemented in C "Align divisor shift dividend method" for procssors without div instrusttion - gcc regression now pass with above * spec2k comparison between ARM and x86 - Continue working on slides for connect - ran benchmarks to gather required results == Plan == * Continue with spec2k comparison between ARM and x86 * Continye with 64bit division

11 years, 8 months

1
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[ACTIVITY] 7 - 11 October 2013

by Omair Javaid

== Progress == (TCWG-266), (TCWG-270), (TCWG-250), (TCWG-280) and (TCWG-288) * Added arm process record syscall support changes and some bug fixes. * More improvement to gdb.reverse on arm now 2214 tests are passing in native mode (144 failures left) (TCWG-267), (TCWG-268) and (TCWG-269) * No progress this week. * Received US visa from US visa passport collection center. * Booked travel for LCU13. == Plan == * Short week Hujj and Eid-Al-Adha Public Holidays in Pakistan 15-17 October 2013. (TCWG-250) * Update/test arm process record thumb32 support patch incorporating changes suggested by Will in his review. (TCWG-280) * Improve code changes and find ways to avoid hard coded constants imported from Linux Kernel.

11 years, 8 months

1
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[ACTIVITY] Week 40 & 41

by Zhenqiang Chen

== Issues == * Develop machine was broken. Have to resetup the system. == Progress == * Commit fix for pr58423 * Enhance Linaro crosstool-ng - Fix lp:1232678 - Get EGLIBC version from config files automatically. - Build aarch64 sysroot to support profile (https://launchpad.net/linaro-toolchain-binaries/support/01/). * Update the patch "Reassociate X == CST1 || X == CST2 if popcount (CST2 - CST1) == 1 into ((X - CST1) & ~(CST2 - CST1)) == 0" according to comments. * Continue on CCMP - Send the phiopt patch to handle CCMP for community review. Jeff will follow-up it. - Enhance ifcombine to generate more CCMP. - Handle more than 2 compares in expand. - Add new instruction patterns to generate CCMP for ARM. Test is ongoing. == Plan == * Send ifcombine patch for community review. * Continue on CCMP testing.

11 years, 8 months

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[ACTIVITY] Week 41 : Oct 7 - Oct 11

by Ryan Arnold

== Progress == * CbuildV2 Fixes to add fetch md5sums to testsuite/test.sh: - Subject: [PATCH][test_fetch_md5sums 1/2] lib/fetch.sh: Add missing ${local_snapshots} to md5sum path. - Subject: [PATCH][test_fetch_md5sums 2/2] testsuite/test.sh: Add fetch tests section. * CbuildV2 Fixes to get testsuite/test.sh working in the source directory: - Subject: [PATCH][cbuild2 1/3] testsuite/test.sh: Don't use "warning" function before it is sourced. - Subject: [PATCH][cbuild2 2/3] testsuite/test.sh: Remove redundant sourcing of host.conf. - Subject: [PATCH][cbuild2 3/3] testsuite/test.sh: Re-enable running tests from src dir. CbuildV2 random fixes: - Subject: [PATCH][cbuild2 2/4] cbuild2.sh: correct --disable "boostrap" - Subject: [PATCH][cbuild2 3/4] config/ffmpeg.conf: separate options * CbuildV2 fixes to remove ${dir}/md5sums usage (it is redunant with snapshots/md5sums). - Subject: [PATCH][cbuild2 1/4] Remove unneeded infrastructure/md5sums fragment - Subject: [PATCH][cbuild2 4/4] Remove ${dir} specific md5sums files. * Fixed error where gcc stage 2 configure returns early (erroneously) on success. - [PATCH] Only return early on error following configure * Fixed error in downloading branch named git repos in lib/checkout.sh. - [PATCH] Fix git clone to get repo without branch name as part of the url. == Issues == Contacted its@linaro requesting permission to be able to create personal branches in rsavoye’s cbuild2 git tree. They created a group for cbuildv2. Got work laptop installed (dualboot) with Fedora 19 and ran into some errors with secure boot. == Plan == * Spend some time looking at our options with regard to EGLIBC options groups when forced to move to glibc proper. *

11 years, 8 months

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[ACTIVITY] Week 41

by Will Newton

== Progress == * Backports and release for binutils 2013.10 (x4!) * Backports and release for eglibc 2013.10 * Submitted a couple more glibc memalign patches * Committed aarch64 gdb fix * Bits of malloc work in between == Issues == * None == Plan == * Try and get some uninterrupted time on malloc -- Will Newton Toolchain Working Group, Linaro

11 years, 8 months

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[ACTIVITY] Week 41

by Renato Golin

== Progress == * EEMBC - Updating Linaro image with Clang toolchain changes - Updating compare_all script to rank boards - Investigating differences in performance against GCC * ODroid XU - Setting up server image (Linaro 13.09 + odroid specific changes) - CPU scheduler is a mess, forcing "performance" governor at boot seems to work - No journal in root fs, remounts ro all the time (bad image?) - LLVM builds are slow (as fast as Chromebook), maybe it's the SDCard - Setting it as self-host buildbot in the lab, going well * Background - Massive patch review (Sub-Register Live Range Analysis for NEON/VFP et al) - LLVM Sync and EuroLLVM meetings == Plan == * Continue investigating performance problems in EEMBC * Check Odroid XU internal buildbot for stability

11 years, 8 months

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Error

by Rick

Hi Term, I have try to us "crosstool-ng-linaro-1.13.1-4.8 "to build myself cross tool chain, but some problem happened,just before I have used crosstool-ng offcial version, every thing is fine,I have got my toolchain, my operation system is Ubuntu 12.10, when I change to crosstool-ng-linaro, I am follow these steps. ct-ng list-samples, ct-ng linaro-arm-linux-gnueabihf ct-ng menuconfig I just change Local tarballs directory ,Prefix directory ,and change target os from prebuilt to linux, then,I build it,first time error happened at step "cc_core_pass_1 ",I google it and found out it is about multilib,I need to install gcc-multilib and g++-multilib, then,I continue,this time,error happened at step"cc_core_pass_2 ". related messages in build.log: [ALL ] Supported emulations: armelf_linux armelf armelfb armelfb_linux [ERROR] collect2: error: ld returned 1 exit status [ERROR] make[4]: *** [libgcc_s.so] Error 1 [ALL ] make[4]: Leaving directory `/work/software/cortexa9-linaro-build/.build/arm-linux-gnueabihf/build/build-cc-core-shared/arm-linux-gnueabihf/arm-linux-gnueabi/libgcc' [ERROR] make[3]: *** [multi-do] Error 1 [ALL ] make[3]: Leaving directory `/work/software/cortexa9-linaro-build/.build/arm-linux-gnueabihf/build/build-cc-core-shared/arm-linux-gnueabihf/libgcc' [ERROR] make[2]: *** [all-multi] Error 2 [ALL ] make[2]: Leaving directory `/work/software/cortexa9-linaro-build/.build/arm-linux-gnueabihf/build/build-cc-core-shared/arm-linux-gnueabihf/libgcc' [ERROR] make[1]: *** [all-target-libgcc] Error 2 [ALL ] make[1]: Leaving directory `/work/software/cortexa9-linaro-build/.build/arm-linux-gnueabihf/build/build-cc-core-shared' [ERROR] [ERROR] >> [ERROR] >> Error happened in: main[scripts/crosstool-NG.sh] so,I really don't know how to do now,any help is welcome.Thank you Cheers,Rick

11 years, 8 months

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Does Linaro aarch64 gcc toolchain support Cortex-A53/A57 performance tunning.

by Zenon Xiu

Hi team, In the GCC.pdf of gcc-linaro-aarch64-none-elf-4.8-2013.08, it says that -mcpu supports cortex-a53, but when I tried to build a simple hello bare metal application with -mcpu=cortex-a53 option, gcc reports, Error: unknown cpu `cortex-a53' Error: unrecognized option -mcpu=cortex-a53 Could you please confirm whether Cortex-A53/A57 performance tunning is supported? Thanks. Best Regards. ------------------------------------------------------------------ Zenon Xiu -- IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. ARM Limited, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, Registered in England & Wales, Company No: 2557590 ARM Holdings plc, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, Registered in England & Wales, Company No: 2548782

11 years, 8 months

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[ANNOUNCE] Aarch64 toolchain binaries respin 2013.09-01 released

by Bernhard Rosenkränzer

We have spotted a problem with the GOT layout in binaries generated by the 2013.09 Aarch64 toolchain, causing them to crash on startup. New builds fixing this issue are now available at http://releases.linaro.org/13.09/components/toolchain/binaries The arm-linux-gnueabihf and arm-none-eabi toolchains are not affected by this problem - there is no respin version for those builds. 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.

11 years, 8 months

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[ACTIVITY] Week 40

by Will Newton

== Progress == * Committed glibc ARM pointer encryption support. * Committed binutils AArch64 ifunc support. * Committed glibc malloc test patches. * Committed glibc setjmp/longjmp Thumb patches. * Backported glibc aarch64 gprof support. * Submitted qemu AArch32 VSEL patch. * Backported binutils AArch64 GOT layout patches. == Issues == * None == Plan == * Backports for 2013.10 * Follow up qemu patch * malloc -- Will Newton Toolchain Working Group, Linaro

11 years, 8 months

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[ACTIVITY] 29 Sept-4 Oct 2013

by Christophe Lyon

== Progress == * AArch64 frame grows downward: no feedback yet. * Disable-peeling: Vectorizer cost model has been changed upstream, the current default now includes the effect of disabling peeling. I have submitted benchmark jobs to check the exact effet; expecting some regressions since the reduced test case I was working on now generates the same code as with my patch. * AArch64 bootstrap failure: build it still on-going, so still hoping to reproduce it. * GCC trunk validation: - good progress on reporting - cross-validating several configurations (currently 18) for each upstream commit is too much for our compute farm to handle. Reduced to patches related to ARM/AArch64, but then we can miss regressions caused by other generic patches. * Backports: - committed a few simple ones. == Next == * AArch64 frame grows downward: continue * Disable-peeling/new vectorizer cost model: analyze bench results * Backports : check which ones can be reasonably done

11 years, 8 months

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[ACTIVITY] Week 40

by Yvan Roux

== Issues == * None. == Progress == * 2013-10 release. - Reviewed some backports. * LRA on AArch32: - Testsuite analysis showed one remaining issue in ARM mode (with the movmisalignv8hi_neon_store insn handling). - Ran Benchmarks on Calxedas, some failures due to the same bug. - Benchmarks on tcpandas ongoing. - Benchmarks results analysis ongoing. == Next == * Continue on LRA.

11 years, 8 months

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[ACTIVITY] 28 September -1 October 2013

by Venkataramanan Kumar

== Progress == * libssp Updated review comments given by glibc maintainer and rerun tests. There are some test failures, suspecting issue in using ALIGN_UP/DOWN macro. Debugging them. * gprof support for aarch64 Upstreamed patches to GCC and backported to Linaro 4.8 branch. Closed the cards for gprof work. * 1-1 Meet with Christophe. == Plan == * Continue libssp support. * Restart Aarch64 boot strap in a server machine. * Book hotel ticket for connect. * PGO for aarch64

11 years, 8 months

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[Activity] Sept 30 - Oct 5

by Rob Savoye

== Progress == * Fixed my laptop's desktop by upgrading to saucy & Gnome 3.10. * Continuing with Jenkins/Cbuildv2/Git integration. Since this is an ongoing task, I think I'm going to stop listing it every week. :-) * Fixed more bugs in Cbuildv2 when handling branches and revisions. * Compared source tarballs for binutils and gcc, Linaro releases against Cbuildv2 produced ones. * Added support to Cbuildv2 for building binutils source releases in the same style as src-release. * Worked on aarch64 builds on real hardware to test adding libatomic and go to builds. * Added support to build all documentation, which is used when building tarballs. * Reviewed and applied Cbuildv2 patches from Ryan. == Plan == * Try to work around problem with importing test results. * Continued work on release building via Cbuildv2. * Get Odroid boards working reliably, ordered AC powered USB hubs to work around problem with exterrnal USB drives.

11 years, 8 months

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[ACTIVITY] 30 September - 4 October 2013

by Omair Javaid

== Progress == * Traveled to Islamabad for US Visa Interview, got verbal confirmation of visa. Passport will be back this week. (TCWG-250) * GDB ARM Process Record Thumb32 Support: Submitted a new patch upstream which fixed bugs. (TCWG-270) * Tested arm process record bug fixes in various configurations to get pass rate statistics for the new patch. (TCWG-280) * Reviewing changes required for syscall support for gdb arm process record. == Plan == (TCWG-267), (TCWG-268) and (TCWG-269) * Ping or Send response to comments. (TCWG-280) * Start implementation and complete most part of coding next week. * If Passport comes back with visa stamped: plan/book travel to US, gather connect related information and notify all concerned.

11 years, 8 months

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[ACTIVITY] Sept 29 - Oct 4

by Kugan

== Progress == * Lnaro 4.8 Bugfix - Fixed Bugs LP1232017 and LP1234060 - gmp and mpfr make check now clean * spec2k comparison between ARM and x86 - Looked at register allocation issues - Started working on slides for connect == Plan == * Continue with spec2k comparison between ARM and x86 * Start again with 64bit division == Misc == * October 7th Public Holiday.

11 years, 8 months

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[ACTIVITY] Sept 29 - Oct 4

by Ryan Arnold

== Progress == * Finished most new employee onboarding * Setup Chromebook with Linux Ubuntu (crouton) development environment. * glibc [PATCH] Update generic swapon definition to match prototype. * CBuildV2 [PATCH] Fix stamp-configure* name for git repos with specific named branches [PATCH] Only return early on error following configure [PATCH] Remove dryrun wrapper from git-new-workdir invocation. [PATCH] Fix stamp name for git repos with specific named branches. [PATCH] Remove lynx check from configure[.ac]. It's no longer used. Started working on a patch to fix git working directory branch name for named branches. == Plan == * Install Fedora 19 on work laptop that just (Oct 4) arrived and setup working environment. * Finish first-pass fixes on cbuildv2. * Complete patch to fix git working directory branch name. * Start working on a glibc.git conf file to potentially move away from eglibc.git. * Fix cbuildv2 fetch time stamps. They seem to always be downloading tar balls. * Fix stamp output so that it doesn't imply that stamps or older than a file when stamps do not yet exist. == Issue == * Temporary desktop corruption and couldn't Linux 'rescue' from an encrypted drive. Spent part of Tuesday rescuing my work environment off the drive and reinstalling system.

11 years, 9 months

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[ACTIVITY] Week 40

by Renato Golin

== Progress == * EEMBC - Ran on multiple boards, collected statistical data, wrote some scripts to do it again - Found a few regressions on GCC 4.9, reported internally - Found 4 benchmarks in which LLVM is a lot worse - Looking at RGBCMY which GCC is able to vectorise - LLVM transforms the pointer access into a PHI cycle, which is wrongly interpreted as a reduction variable by the loop vectorizer. * Background - Patch reviews and discussions as usual - TCWG rack has arrived! - Got another Chromebook and an ODroid XU to play with next week == Plan == * Update script to rank the compilers according to EEMBC results on the same machine * Try to teach the loop vectorizer to not treat load/store PHIs as a reduction variable * Set up some temporary buildbots with new hardware

11 years, 9 months

1
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process for enabling gccgo in Linaro GCC binary distributions

by Michael Hudson-Doyle

Hi, With the patch I just sent to this list in place, gccgo builds for aarch64. I don't know how well it _works_ -- "hello world" builds and runs -- but I would like to ask what the process would be to get gccgo included in the binary distributions of GCC that Linaro makes. Cheers, mwh

11 years, 9 months

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[Activity] Sept 23-30

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.

11 years, 9 months

1
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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

11 years, 9 months

1
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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

11 years, 9 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

11 years, 9 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.

11 years, 9 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.

11 years, 9 months

1
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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

11 years, 9 months

1
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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.

11 years, 9 months

1
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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

11 years, 9 months

1
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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

11 years, 9 months

1
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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

11 years, 9 months

1
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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.

11 years, 9 months

1
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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

11 years, 9 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.

11 years, 9 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

11 years, 9 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

11 years, 9 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.

11 years, 9 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.

11 years, 9 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

11 years, 9 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

11 years, 9 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.

11 years, 9 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?

11 years, 9 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.

11 years, 9 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

11 years, 9 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.

11 years, 9 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

11 years, 9 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

11 years, 9 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...

11 years, 9 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

11 years, 9 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

11 years, 9 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

11 years, 9 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

11 years, 9 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

11 years, 9 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

11 years, 9 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

11 years, 9 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

11 years, 9 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.

11 years, 9 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

11 years, 9 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.

11 years, 9 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)

11 years, 9 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

11 years, 9 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

11 years, 9 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

11 years, 9 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

11 years, 9 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

11 years, 9 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

11 years, 10 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

11 years, 10 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.

11 years, 10 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.

11 years, 10 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

11 years, 10 months

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[ACTIVITY] Aug week 4

by Rob Savoye

== Progress == * More work on Jenkins/Cbuildv2 integration. * Finished reviewing all 81 wiki pages I had to review. * Added a 'dryrun' option to Cbuildv2 that displays all configure and make command lines without executing them as a learning aid. * Added 'make check' to toolchain builds via Jenkins/Cbuildv2. * Added a simple "Hello World" test case in C++ to toolchain builds in Cbuildv2 to make sure the fresh build minimally works. * Added several more sections to the Cbuildv2 Usage wiki page. * Cbuildv2 can now downloads and builds several projects/ (QT, GTK, etc...) as a toolchain test. * Got the LAVA team to make many tweaks to Jenkins and other stuff to support TCWG needs for Cbuildv2. Now Jenkins does a toolchain build of all supported architectures for each commit to GCC upstream. * Two small wildland fires this week, plus 3 motorcycle accidents. == Plan == * More work on binary releases via Cbuildv2. * Import test results into Jenkins. * Continued work on Jenkins/Cbuildv2 integration. == Issues == * Libmudflap, needs -ldl, or make check fails when linking with --as-needed (used on Ubuntu by default). * On chromebook using a raring chroot, 'make check' for mpfr has these three test cases: tasinh, tcot, and tcsc which consume all the memory and hang when run with the other infrastructure libraries via Cbuildv2. The ttan and tsinh tests segfault, and tgamma return an incorrect result. These same test cases all pass if I use Cbuildv2 to only build and test mpfr. Weird...

11 years, 10 months

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