linaro-toolchain April 2013

linaro-toolchain@lists.linaro.org

27 participants
53 discussions

[ACTIVITY] 15-19 April 2013

by Christophe Lyon

== Progress == * Disable-peeling: waiting for reference job results * Libsanitizer: - identified the reason for different behaviour on board and on simulator - proposed a workaround on gcc-patches (qemu-user has a few limitations, so it's desirable to skip some libsanitizer tests) - in the mean time libsanitizer developers received similar concerns from android, and are considering a runtime environment variable to control use of stderr * Neon intrinsics: - resumed investigation on vuzp crc * Internal support == Next == * Peeling: analyze results when available * Revert-coalesce: same * Libsanitizer: reach agreement with upstream * Neon intrinsics: continue with vuzp crc

11 years, 7 months

[ACTIVITY] Week 16

by Will Newton

== Progress == * Further work on glibc memcpy IFUNC patch based on review. * Ported libdwarf to aarch64 and submitted upstream. * Disabled gold build in binutils cbuild job and created a gold job. * Investigated binutils testsuite failure on precise. * On leave Friday. == Issues == * None. == Plan == * Submit a patch for binutils testsuite failure on precise. * Complete work on glibc memcpy iFUNC patch. * Follow up binutils IFUNC patch. * AArch64 IFUNC next... -- Will Newton Toolchain Working Group, Linaro

11 years, 7 months

[ACTIVITY] 15 - 19 April 2013

by Omair Javaid

== Progress == * Completed investigation of GDB dwarf test suite failures on ARM. Almost all failures will be fixed with small updates to test cases assembly language files. * Checked-out GDB 7.6 branch and did comparison of dwarf test case failures on arm. Some test cases have been updated already and dont need a patch. * Started filtering GDB test suite results on ARM for possible failures due to assembly language incompatibility. * Tried some experimentation with cbuild, and ec2 instances only to find out they are not connected with lab. * Completed Ireland Visa process. Spent Friday and most part of Thursday for the documents attestation, fee submission and postage stuff. *** Still No blue-print available to log work in JIRA. == Plan == * Filter all arm assembly language compatibility updates required to gdb test suite and create a patch. * Get an intro to gdb patch submission process for a possible fix to gdb test suite for arm assembly compatibility. * Start looking into gdb.mi test suite failures on arm. * Fill up the arm native vs arm remote comparison sheet. * Figure out a way to use hackbox for gdb testing on arm.

11 years, 7 months

[ACTIVITY] Week 16

by Yvan Roux

== Issues == * None == Progress == * Libunwind AArch64 support: - Implemented signal frame detection routine. - Resuming with signal is failing, debug ongoing. == Plan == * Libunwind AArch64 support: - Fix and submit upstream

11 years, 7 months

[ACTIVITY] 15-19 April 2013

by Venkataramanan Kumar

== Progress == Very short week, was doing some AMD internal tasks and attend local meetings. * gprof support work for Aarch64. Not much progress this week. Working on GCC side to support gprof for Aarch64. == Plan == * Continue gprof support work for Aarch64

11 years, 7 months

[ACTIVITY] 15-19 April 2013

by Kugan

== Summary == - http://cards.linaro.org/browse/TCWG-13 - performance regression is due to alignment of function. - there is an increase in runtime of core_state_transition even though there is no difference in the code generated with the patch - Adding nops seems to improve the locality and performance; it gets better than without the patch for THUMB2. - Get spec2000 results for http://cards.linaro.org/browse/TCWG-14 to decide on the next step - Couldn’t get SPEC2000 results with CBUILD - set-up spec benchmarks in chromebook and now running locally. - https://blueprints.launchpad.net/gcc-linaro/+spec/better-end-of-loop-counte… - Initial investigation shows that the code generated is same as expected. == Plan == - http://cards.linaro.org/browse/TCWG-13 - follow it up - Get spec2000 results for http://cards.linaro.org/browse/TCWG-14 to decide on the next step - Look for improvement in VRP for zero/sign extension

11 years, 7 months

[ACTIVITY] week 16

by Renato Golin

== Progress == * Running around JM/lencode bug - caused by a codegen opt (ICMP fold) that had repercussions only on A9 and A15 code generation - spent three days trying to reduce the case when the problem fixed itself miraculously >:( * Planning for the future - Agreeing on short-term plans for Q2 * Buildbot - Working on self-hosting bot - Moved local buildmaster to hackbox * Investigating LLVMLinux - Building Android kernel with LLVM - Investigating breakage in Debug mode == Plans == * Continue self-hosting bot * Try running a CBuild benchmark with LLVM * Start putting up together the infrastructure for release 3.3 * Try to extract useful information from perf database

11 years, 7 months

[ACTIVITY] report week 16

by Peter Maydell

Progress: * qemu maintenance ** sent arm-devs and target-arm pullreqs now we're in softfreeze * VIRT-4 ** received Arndale board, confirmed it works (took several hours mostly due to bonkers power switch design) ** VIRT-49 *** making progress; updated card with a list of sub-subtasks Plans: * keep pushing on with VIRT-49 * finish config of arndale board, test running KVM on it * book travel/hotel for Connect Dublin * office move Fri 26/Mon 29 -- PMM

11 years, 7 months

http://cbuild.validation.linaro.org/helpers/recent ISE today

by Matthew Gretton-Dann

All, http://cbuild.validation.linaro.org/helpers/recent was reporting an Internal Server Error earlier today, and after looking at the logs the resultant cause was because the gcc-4.8+svn198079 Lava job (https://validation.linaro.org/lava-server/scheduler/job/52224) decided that it was an a9 (as opposed to a9hf) job and that it didn't no which version of Ubuntu it was running on. The caused the logs to be put in http://cbuild.validation.linaro.org/build/gcc-4.8+svn198079/logs/armv7l--cb… The tcwg-web app then fell over because it couldn't pass the armv7l--cbuild-panda-es06-cortexa9r1 name. I fixed the issue by manually renaming the build log directory to: http://cbuild.validation.linaro.org/build/gcc-4.8+svn198079/logs/armv7l-pre… And once the cron job which scans the builds had run everything now works. Actions: 1. Paul - do you mind taking a look at the build and seeing what went wrong - my initial cursory glance makes me believe its the board having heat issues causing random things to happen. 2. Paul & Matt - Looking at the code (and from something else Michael said to me last week) I think having hostnames with '-' characters in them will confuse the cbuild interface. I propose changing cbuild to do a s/-/_/g on all the hostname it reads as a workaround. I don't plan on changing actual hostnames of boards. Paul is this going to cause a problem for you in Lava? Thanks, Matt -- Matthew Gretton-Dann Toolchain Working Group, Linaro

11 years, 7 months

Linaro toolchain Android linking problem redivivus

by Marius Cetateanu

Hi, Some time ago I had some problems linking my project libraries for Android using the Linaro toolchain 4.7.1 which I reported to the list: http://lists.linaro.org/pipermail/linaro-toolchain/2012-June/002631.html I ended up using the 4.6.x version of the compiler because I could not find a fix and I did not get any hints from the mailing list. Now I need to really switch to 4.7(for better C++11 support) but I'm pretty much having the same issue with the 4.7.3 version: E.g. System/Logging/DroidLogger.cpp.o: requires unsupported dynamic reloc R_ARM_REL32; recompile with -fPIC /home/dev/android/android_linaro_toolchain_4.7/bin/../libexec/gcc/arm-linux-androideabi/4.7.3/real-ld: error: /home/marius/Development/ToolChains/Android/experimental_ndk/sources/cxx-stl/gnu-libstdc++/4.7.3/libs/armeabi-v7a/libsupc++.a(eh_globals.o): requires unsupported dynamic reloc R_ARM_REL32; recompile with -fPIC /home/dev/android/android_linaro_toolchain_4.7/bin/../libexec/gcc/arm-linux-androideabi/4.7.3/real-ld: error: hidden symbol '__dso_handle' is not defined locally /home/dev/android/android_linaro_toolchain_4.7/bin/../libexec/gcc/arm-linux-androideabi/4.7.3/real-ld: error: hidden symbol '__dso_handle' is not defined locally I'm using it with the Android NDK version r8e. I have downloaded the prebuilt binaries: android-toolchain 4.7 (ICS, JB) <http://www.linaro.org/downloads/> 4.7-2013.03 13.03 (Linaro GCC 4.7-2013.03) 4.7.3 20130226 (prerelease) Does anyone have any hints on how to overcome the above mentioned problem? -- Marius Cetateanu | Software Engineer T +32 2 888 42 60 F +32 2 647 48 55 E mce(a)softkinetic.com YT www.youtube.com/softkinetic SK Logo <www.softkinetic.com> Boulevard de la Plaine 15, 1050, B-Brussels, Belgium Registration No: RPM/RPR Brussels 0811 784 189 Our e-mail communication disclaimers & liability are available at: www.softkinetic.com/disclaimer.aspx

11 years, 7 months

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linaro-toolchain April 2013