linaro-toolchain

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5634 discussions

[ACTIVITY] 14-18 January 2013

by Christophe Lyon

== Progress == * 64-bits ops in Neon: pinged patch proposal. * vectorizer cost model: received results from spec2k. Prepared initial tuning to submit to benchmarking again. * smin-umin: tests OK, benchmarks ran, but did not generate the diff over a valid ancestor. I didn't make the manual comparison yet. * updated board for local benchmarking * tcpanda heat problems: built a new kernel with the thermal driver; need to reboot the board with it == Next == * handle 64-bits bitops in Neon feedback from upstream if any * analyze results of benchmarking with vectorizer cost model * analyze results of benchmarking with smin-umin idiom patch * continue board setup/update; I will probably try to cross-build the benchmarks to avoid having the build GCC itself on the board and save time. * followup on tcpanda heat problems

12 years, 8 months

[ACTIVITY] 14-18 Jan

by Renato Golin Linaro

== Progress == * Buildbots - Added a Panda ES buildbot on clang-native-arm-cortex-a9 group - Reporting and helping fix bot bugs on ARM - ARM buildbots are green again! - Each ARM buildbot takes 4h15min to complete, versus 15min on Intel - We're still testing up to 12-15 patches on each build, on peak times (PST) * LAVA - Created a test run for llvm check-all, infrastructure is there - Need to make it actually do some work * Vectorization - Refactored cost model's temp tables - http://llvm.org/viewvc/llvm-project?view=rev&revision=172658 - Studying NEON costs, changing ARM target lowering * test-suite A15 - Building LLVM on Chromebook, check-all (1h, 181 failures) - Self-hosting LLVM on Chromebook, check-all (50min, many more) - Found some floating point type errors, only on Chromebook (libs?) * AArch64 back-end - Reviewed patches, look ok, some comments - Should be all in by next week * LLVM cross-compilation woes - Had to define include path for c, c++ and arm locations - It calls the wrong assembler, even defining the right gnu toolchain - Someone needs to fix these cross-compilation bugs!! :) == Plan == * Finish basic NEON costs for vectorization * Finish LAVA bot compiling clang + check-all * Install Panda buildbot on rack * Continue investigating Chromebook failures * Continue thinking about the long term plan for LLVM

12 years, 8 months

[ANNOUNCE] Linaro GCC 4.7 and 4.6 2013.01 released

by Zhenqiang Chen

The Linaro Toolchain Working Group is pleased to announce the 2013.01 release of both Linaro GCC 4.7 and Linaro GCC 4.6. Linaro GCC 4.7 2013.01 is the tenth release in the 4.7 series. Based off the latest GCC 4.7.2+svn194772 release, it includes ARM-focused performance improvements and bug fixes. Interesting changes include: * Updates to GCC 4.7.2+svn194772 * Includes arm/aarch64-4.7-branch up to svn revision 194808 * Support for the rev16 and revsh instructions * A15 Neon pipeline backported from trunk * FMA intrinsic backported from trunk * Better extending core to NEON transfers * Fused multiply-add support Fixes: * LP #1088898 regression of x86 gcc bootstrap with Linaro sourcebase * LP #1067766 Backport support for arm-linux-gnueabihf to GCC Linaro * LP #1084010 __atomic_load doesn't match ACQUIRE memory model Linaro GCC 4.6 2013.01 is the 23st release in the 4.6 series. Based off the latest GCC 4.6.3+svn194771 release, this is the tenth release after entering maintenance. Interesting changes include: * Updates to 4.6.3+svn194771 The source tarballs are available from: https://launchpad.net/gcc-linaro/+milestone/4.7-2013.01 https://launchpad.net/gcc-linaro/+milestone/4.6-2013.01 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/4.7/4.7-2013.01 https://launchpad.net/gcc-linaro/4.6/4.6-2013.01 Mailing list: http://lists.linaro.org/mailman/listinfo/linaro-toolchain Bugs: https://bugs.launchpad.net/gcc-linaro/ Questions? https://ask.linaro.org/ Interested in commercial support? Inquire at support(a)linaro.org

12 years, 8 months

Thursday 17th January 2013 1600 UTC Performance Call cancelled

by Matthew Gretton-Dann

All, Due to items in the performance call being covered in other meetings, travel and other issues I have decided to cancel today's 1600 UTC call. Thanks, Matt -- Matthew Gretton-Dann Toolchain Working Group, Linaro

12 years, 8 months

[PATCH] Cortex Strings AArch64 strnlen.S fix

by Marcus Shawcroft

This patch fixes an issue in the AArch64 strncmp implementation which occurs if ULONG_MAX-15 <= n <= ULONG_MAX. Matt, this is the last of my outstanding patches for cortex-strings. /Marcus

12 years, 8 months

[PATCH] Cortex Strings AArch64 fix for strncmp.S

by Marcus Shawcroft

This patch fixes an issue in the AArch64 strncmp implementation which occurs if ULONG_MAX-15 <= n <= ULONG_MAX. /Marcus

12 years, 8 months

AArch64 NEON polynomial types

by Renato Golin Linaro

Hi folks, On the LLVM list, Tim (ARM) is trying to push a patch to update the polynomial types on NEON to unsigned, on both 32-bits and 64-bits, since AArch32 says nothing and AArch64 specifies unsigned (char and short). Is there any such movement on the GCC end? The LLVM folks would rather this be a common move (or GCC first), than going solo and risk losing ABI compatibility. Any comments? cheers, --renato

12 years, 8 months

Linking error - VFP register arguments

by Anup Kini

Hi All, I am trying to build OpenNI drivers and stuck with the following linker error. /usr/bin/ld: error: ../../Bin/Arm-Release/libOpenNI.so uses VFP register arguments, ./Arm-Release/XnBaseNode.o does not /usr/bin/ld: failed to merge target specific data of file ./Arm-Release/XnBaseNode.o /usr/bin/ld: error: ../../Bin/Arm-Release/libOpenNI.so uses VFP register arguments, ./Arm-Release/XnDump.o does not /usr/bin/ld: failed to merge target specific data of file ./Arm-Release/XnDump.o and many more of similar errors with VFP. System : ZYNC ZC702 board with ARM Cortex A9 dual core. OS: Linaro 12.04 LTS GCC - 4.6.3 Is there some flag i have to set in the Makefile to correct the Hard/Soft float type ? How do i figure out the correct one ? -- *Anup Kini *Systems Engineer**** * ------------------------------ * *Synapticon** * | Cyber-Physical System Solutions **** Direct:**** +49 7335 / 186 999 17**** Fax:**** +49 7335 / 186 999 1 **** **** synapticon.com <http://www.synapticon.com/> | @synapticon_co<https://twitter.com/#!/synapticon_co> **** Synapticon GmbH | Hohlbachweg 2 | 73344 Gruibingen, DE Secretary +49 7335 / 186 999 0 | General Manager: Nikolai Ensslen Registry Court Ulm HRB 725114 | USt-ID DE271647127**** This message and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. Please notify the sender immediately if you have received this e-mail by mistake and delete it from your system.

12 years, 8 months

Possible toolchain bug with handling return value of read()

by Riku Voipio

Hi, The testcase at https://launchpadlibrarian.net/128616769/compare-test.c With aarch64: aarch64-oe-linux-gcc -o a-test ./compare-test.c ./a-test: fail ret: -1: Bad address With X86_64: gcc -o test ./compare-test.c ./test correct. ret: -1: Bad address setting -D_FILE_OFFSET_BITS=64 doesn't make a difference. This is with: gcc version 4.7.3 20121205 (prerelease) (Linaro GCC 4.7-2012.12) This was found while debugging: https://bugs.launchpad.net/linaro-aarch64/+bug/1099896 Riku

12 years, 8 months

[MINUTES] Toolchain Working Group Weekly Meeting 14/Jan/2013

by Matthew Gretton-Dann

All, The minutes for today's calls are here: https://wiki.linaro.org/WorkingGroups/ToolChain/Meetings/2013-01-14 Action items are: TODO: Matt to investigate EEMBC Office gs8 failures ONGOING: Matt to talk to Dave Pigott about HF builders TODO: Matt blueprint backport of binutils 2.23.1 - backport just needs merging TODO: Matt to blueprint options for reducing QEMU based cross test noise TODO: Matt to unreserve Michael Hope's reservations TODO: Matt to look at why Cortex-A9 softfloat bootstraps fail in Stage2. TODO: Zhenqiang to do GCC Release: https://wiki.linaro.org/WorkingGroups/ToolChain/GCC/ReleaseProcess TODO: Matt to do Cortex Strings release. TODO: Matt chase up EEMBC Networking License TODO: Matt chase up with morvek who is leading KVM Virtual team. TODO: All to think of proposals for GNU Tools Caudron The agenda for next week's call is here: https://wiki.linaro.org/WorkingGroups/ToolChain/Meetings/2013-01-21 Please feel free to add your own agenda items before hand. Thanks, Matt -- Matthew Gretton-Dann Toolchain Working Group, Linaro

12 years, 8 months

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