linaro-toolchain September 2012

linaro-toolchain@lists.linaro.org

11 participants
30 discussions

by Matthew Gretton-Dann

== Progress == * Fixed https://bugs.launchpad.net/ubuntu/+source/gcc-4.6/+bug/1029454 * After investigating further found that this was actually an issue already fixed in FSF upstream * 4.7 AArch64 merge into gcc-linaro/4.7 * Did an initial merge of upstream ARM/aarch64-4.7-branch into gcc-linaro/4.7 * So far it hasn't broken other platforms * Investigated getting FastModels working for me * Hot/Cold partitioning in PGO: * Tidied up current patches ready for reposting upstream * Handed current status to Christophe == Next Week == * HOT/COLD partitioning for PGO: * Complete hand-over to Christophe * Get two current patches accepted upstream * Post question upstream about register allocation 'mistakes' I am seeing * ARM/aarch64-4.7-branch merge into gcc-linaro/4.7. * Get a test run of aarch64 targetted compiler complete * Confirm no code generation changes for other back-ends * symbol_ref splitting * Test code alignment hypothesis * Test v2 patch. * Admin * Several interviews == Future == * Look at Cards for Vectorization, PGO and LTO with Michael. -- Matthew Gretton-Dann Linaro Toolchain Working Group matthew.gretton-dann(a)linaro.org

11 years, 7 months

[ACTIVITY] report week 37

by Peter Maydell

Current Milestones: || || Planned || Estimate || Actual || || clean up kvm-qemu cp i/f || 2012-09-20 || 2012-09-20 || || || fake-trustzone || 2012-10-15 || 2012-10-15 || || Also planned: general keeping up with kernel changes; upstream patch review; qemu-linaro releases. May change dates to align with overall KVM plan for the quarter when that is finalised. Previous Milestones: ||cp15-rework || 2012-01-06 || 2012-06-23 || 2012-06-24 || ||a15-lpae-support || 2012-07-13 || 2012-07-20 || 2012-07-20 || == track-kvm-abi-changes == * folded in Christoffer's interrupt ABI changes * updated to new ONE_REG ABI for register accesses * QEMU now in sync with the kernel patchset Christoffer has just sent to alkml == other == * qemu-linaro 2012.09 released * various meetings/status calls KVM blueprint progress tracker: http://ex.seabright.co.nz/helpers/backlog?group_by=topic&colour_by=state&pr…

11 years, 7 months

[Activity] Week 37

by Zhenqiang Chen

Summary * Workaround the unwind issue for shrink-wrap * Verify Linaro tickets. Details: 1. Debugging the failed cases for shrink-wrap. To workaround the unwind issue, update arm_expand_epilogue to generate return not simple_return when sp is changed. 2. Setup Linaro toolchain and verify 8 tickets: *Linaro gcc: lp:1036170: Function pointer dereferenced twice. It is ARM special bug which is confirmed in 4.6, 4.7 and FSF trunk only on ARM. lp:1048709: wrong assembler, out of range vldr instruction. Confirmed in Linaro 4.6. Can not reproduce it in 4.7 or FSF 4.6. lp:1014658: It is c++11 related issue in 4.6. lp:944572: It is a gcc general issue. lp:972503 and lp:1039401 can not be reproduced. * Linaro binary toolchain: lp:1046718: confirmed and fixed it. lP:1049498: invalid Plans: * Prepare Linaro binary toolchain 2012.09 release. * Performance test for shrink-wrap. * Follow-up the tickets. Best regards! -Zhenqiang

11 years, 7 months

[ACTIVITY] Sep 10-Sep 14

by Christophe Lyon

== Progress == * Committed patch to fix 3 testcases in big-endian after upstream comments. * Updated patch to make vext tests support big-endian after upstream comments. * builtin_bswap16: * Committed implementation for ARM. * Investigating testsuite regressions caused by my patch to catch (x<<8)|(x>>8) == Next == * Continue with bswap16 support.

11 years, 7 months

[ACTIVITY] 10 - 14 September

by Matthew Gretton-Dann

== Progress == * Started looking at https://bugs.launchpad.net/ubuntu/+source/gcc-4.6/+bug/1029454 * Confirmed the failure * Unfortunately the git bisect I thought would find the fix didn't * Hot/Cold partitioning in PGO: * Some further investigations * Talked to Uli about one failure - he gave me some further pointers * Admin * Some interviewing == Next Week == * Continue looking at 1029454: cselim tree optimizer generates incorrect code * Start looking at merging the ARM public 4.7 GCC branch into gcc-linaro/4.7 * Hot/Cold Partitioning: * Investigate remaining silent code-gen faults and non-termination issue in SPEC * If failures are fixed start profiledbootstraps and tests on the central boards. * symbol_ref splitting * Test code alignment hypothesis * Test v2 patch. == Future == * Look at Cards for Vectorization, PGO and LTO with Michael. -- Matthew Gretton-Dann Linaro Toolchain Working Group matthew.gretton-dann(a)linaro.org

11 years, 7 months

[ACTIVITY] Sep 13 - Sep 14

by Ulrich Weigand

== GDB == * Created and published Linaro GDB 7.5 release. == GCC == * Posted patch to use vld1.64/vst1.64 instead of vldm/vstm for mainline inclusion. * Posted patch to use vld1/vst1 to implement vec_set/vec_extract with scalar operand residing in memory. Mit freundlichen Gruessen / Best Regards Ulrich Weigand -- Dr. Ulrich Weigand | Phone: +49-7031/16-3727 STSM, GNU compiler and toolchain for Linux on System z and Cell/B.E. IBM Deutschland Research & Development GmbH Vorsitzender des Aufsichtsrats: Martin Jetter | Geschäftsführung: Dirk Wittkopp Sitz der Gesellschaft: Böblingen | Registergericht: Amtsgericht Stuttgart, HRB 243294

11 years, 7 months

[ANNOUNCE] Linaro GDB 7.5 2012.09 released

by Ulrich Weigand

The Linaro Toolchain Working Group is pleased to announce the release of Linaro GDB 7.5. Linaro GDB 7.5 2012.09 is the first release in the 7.5 series. ***NOTE*** Linaro GDB 7.5 2012.09 is identical to the FSF GDB 7.5 release, except for the change in version number and Linaro branding, since all Linaro GDB features were already accepted upstream and are included in the FSF release as-is. Future releases in the Linaro GDB 7.5 series may include additional ARM-focused bug fixes and enhancements. The source tarball is available at: https://launchpad.net/gdb-linaro/+milestone/7.5-2012.09 More information on Linaro GDB is available at: https://launchpad.net/gdb-linaro

11 years, 7 months

[ANNOUNCE] Linaro QEMU 2012.09 released

by Peter Maydell

The Linaro Toolchain Working Group is pleased to announce the release of Linaro QEMU 2012.09. Linaro QEMU 2012.09 is the latest monthly release of qemu-linaro. Based off upstream (trunk) QEMU, it includes a number of ARM-focused bug fixes and enhancements. There are no major changes in this month's release, but it has been updated to be based on upstream's recent 1.2.0 release. The source tarball is available at: https://launchpad.net/qemu-linaro/+milestone/2012.09 More information on Linaro QEMU is available at: https://launchpad.net/qemu-linaro

11 years, 7 months

[ANNOUNCE] Linaro GCC 4.7 and Linaro GCC 4.6 2012.09 released

by Michael Hope

The Linaro Toolchain Working Group is pleased to announce the 2012.09 release of both Linaro GCC 4.7 and Linaro GCC 4.6. Linaro GCC 4.7 2012.09 is the sixth release in the 4.7 series. Based off the latest GCC 4.7.1+svn191123 release, it includes ARM-focused performance improvements and bug fixes. Interesting changes include: * Updates to GCC 4.7.1+svn191123 * Adds support for the NEON vext instruction when shuffling * Backports improvements to scheduling transfers between VFP and core registers * Backports support for the UBFX instruction on certain bit extract idioms Fixes: * PR54252 ICE with too wide alignment assertion on vectorised code * PR54212 ICE due to generating a predicated NEON vdup instruction Linaro GCC 4.6 2012.09 is the nineteenth release in the 4.6 series. Based off the latest GCC 4.6.3+svn191000 release, this is the sixth release after entering maintenance. Interesting changes include: * Updates to 4.6.3+svn191000 The source tarballs are available from: https://launchpad.net/gcc-linaro/+milestone/4.7-2012.09 https://launchpad.net/gcc-linaro/+milestone/4.6-2012.09 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 page: https://launchpad.net/gcc-linaro/4.7/4.7-2012.09 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 -- Michael

11 years, 7 months

GCC 4.6.x miscompiling arm-linux (including Linaro GCC)

by Nicolas Pitre

Hello folks, FYI There is a thread on the arm-linux-kernel mailing list about a GCC bug, and the Linaro version appears to be affected as well. Here's the thread: http://news.gmane.org/group/gmane.linux.ports.arm.kernel/thread=186563 Nicolas

11 years, 7 months

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linaro-toolchain September 2012