linaro-toolchain October 2012

linaro-toolchain@lists.linaro.org

24 participants
29 discussions

by Zhenqiang Chen

Summary: * Linaro bug analysis * Validation Details: 1. Linaro bug analysis: * lp:1065122: Triaged. A fix patch was committed to 4.7 and trunk. * lp:1065559: Confirmed. Need more investigation to find the root cause. * lP:1065509: Can not reproduce it with the latest Linaro toolchain. * lp:1066095: Investigate and invalid it since the reporter can not reproduce it now. 2. Bug fix and smoke test for Linaro binary toolchain 2012.10 release. 3. Clean up shrink-wrap related patches and send to Linaro mail-list for review. Plans: * Linaro binary toolchain 2012.10 release. * Shrink-wrap performance test. Planed leave: * Oct. 26 Best regards! -Zhenqiang

11 years, 6 months

[ACTIVITY] 15-19 October

by Yvan Roux

== Progress == * Read wikis on OpenEmbedded and FastModel * Aarch64 GDB support testing : - Managed to run OE rootfs and kernel under FastModel - Configured the ssh/scp access to the model * Aarch64 GDB backport investigation : - Discussed with ARM the port and plans - Identified upstream patches == Next == * Continue on Aarch64 GDB.

11 years, 6 months

[ACTIVITY] report week 42

by Peter Maydell

Short week (two days): == other == * implemented QEMU patches to track and tell the kernel where the various bits of the VGIC should be mapped in the address space; however these seem to cause the host kernel to Oops... * added a log message category for "guest just did something that's probably a bug in the guest", so we can use it instead of random printf/aborting QEMU * generate inline code for Neon 64 bit negate and 32 bit abs, rather than calling helper functions * updated and resent new versions of some minor cleanup patches which had got lost/obsoleted by QEMU internals changes KVM blueprint progress tracker: http://ex.seabright.co.nz/helpers/backlog?group_by=topic&colour_by=state&pr… -- PMM

11 years, 6 months

[ACTIVITY] 15-19 October

by Christophe Lyon

== Progress == * PGO/hot-cold partitioning/Spec2k: * Debugging why 254.gap is causing an ICE. * Connect preparation: Configuring a temporary laptop == Next == * Continue with PGO/hot-cold partitioning

11 years, 6 months

[ACTIVITY] 15 - 19 October

by Matthew Gretton-Dann

== Progress == * HOT/COLD partitioning for PGO * Submitted merge request for current changes so that we can benchmark and see how much benefit we can actually expect * Patch Tracking & Backporting * Backported Uli's fix for insn splitting at -O0 to 4.7 * Started backporting Doko's configury changes for arm-none-linux-gnueabihf support * Connect Prep * Started investigating LRA * Admin * Interviewing == Next Week == * Prepare for Connect * Investigate zero/sign extension * Investigate LRA * Investigate Conditional Comparison benefits * AArch64 * Document processes == Future == * Attend Connect * HOT/COLD partitioning for PGO: * Get two current patches accepted upstream * Post question upstream about register allocation 'mistakes' I am seeing -- Matthew Gretton-Dann Linaro Toolchain Working Group matthew.gretton-dann(a)linaro.org

11 years, 6 months

Add dwarf/unwind info in epilogue

by Zhenqiang Chen

Hi Ramana, The attached file is a reference patch to add more dwarf/unwind info in epilogue. Please help to review. Without the patch, dwarf check fail for the following cases when enabling shrink-wrap: tst ... L1 //simple_return push ... ... pop ... //.cfa_offset is not 0 L1: bx lr //common simple_return Thanks! -Zhenqiang

11 years, 6 months

[ACTIVITY] report weeks 40,41

by Peter Maydell

== other == * upstream patch review * target-arm pull request * reviewed/committed some boot wrapper patches from Tixy to init the CCI * rebased various qemu kvm-related patches on current upstream master, sent out RFC v2 for review (matching kernel -v12 patches); this is getting some useful review feedback * added check for 'does KVM support vfp-d32' rather than just assuming it on the QEMU side * discussed API for userspace to tell KVM the base address of the VGIC with Avi, Christoffer [todo: write QEMU patches to go with C's proposed kernel patches] KVM blueprint progress tracker: http://ex.seabright.co.nz/helpers/backlog?group_by=topic&colour_by=state&pr… -- PMM

11 years, 6 months

[Activity] Week 41

by Zhenqiang Chen

Summary: * Test shrink-wrap. * Identify the root cause of dwarf check fail when enabling shrink-wrap. Details: 1. Test shrink-wrap on PandaBoard with Precise * Bootstrap is OK * No make check regression * No performance change for SPEC2000 INT. 2. Identify the root case for dwarf check fail on ARM, while they are OK on X86 and MIPS when enabling shrink-wrap. * "push" related INSNs are set as RTX_FRAME_RELATED_P in prologue; but not all "pop" related INSNs are set as RTX_FRAME_RELATED_P. * Prologue uses REG_FRAME_RELATED_EXPR notes to tell the dwarf backend SP is adjusted; but no such kind of notes in epilogue. * In addition, dwarf info for INSNs to adjust SP are not handled correctly in epilogue. Plans: * Verify shrink-wrap related bugs * Prepare Linaro binary toolchain 2012.10 release Best regards! -Zhenqiang

11 years, 6 months

[ANNOUNCE] Linaro GCC 4.7 and Linaro GCC 4.6 2012.10 released

by Matthew Gretton-Dann

The Linaro Toolchain Working Group is pleased to announce the 2012.10 release of both Linaro GCC 4.7 and Linaro GCC 4.6. Linaro GCC 4.7 2012.10 is the seventh release in the 4.7 series. Based off the latest GCC 4.7.2+svn191881 release, it includes ARM-focused performance improvements and bug fixes. Interesting changes include: * Updates to GCC 4.7.2+svn191881 * Backport changes to use VLD1 for Neon quad loads. Fixes: * LP 1053348: Missing binary files Linaro GCC 4.6 2012.10 is the twentieth release in the 4.6 series. Based off the latest GCC 4.6.3+svn191880 release, this is the seventh release after entering maintenance. Interesting changes include: * Updates to 4.6.3+svn191880 * A fix to LP #1029454 The source tarballs are available from: https://launchpad.net/gcc-linaro/+milestone/4.7-2012.10 https://launchpad.net/gcc-linaro/+milestone/4.6-2012.10 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/4.7/4.7-2012.10 https://launchpad.net/gcc-linaro/4.6/4.6-2012.10 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 -- Matthew Gretton-Dann Linaro Toolchain Working Group matthew.gretton-dann(a)linaro.org

11 years, 6 months

[ACTIVITY] 8 - 12 October 2012

by Yvan Roux

== Progress == * Completed Linaro ramp up process. * Obtained my SSH security exception * Crosstool-ng : - Repoduced the aarch64 builds (bare and linux) - Updated gcc to Linaro 2012.10 and submitted the merge request. * Cbuild autobuilder : - Not able to spawn a job on seabright (lack of permission) == Misc == * One day off.

11 years, 6 months

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linaro-toolchain October 2012