linaro-toolchain

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[ACTIVITY] 26 - 30 November 2018

by Prathamesh Kulkarni

== This Week == * GCC SVE ACLE (8/10) - Implementing svlsl intrinsics. * Validation (1/10) - TCWG-1494: Move email logic from tcwg_kernel.yaml to tcwg_kernel-bisect.sh * Misc (1/10) - Meetings == Next Week == - Address Richard's comments on svlsl patch - TCWG-1494 - Experiment with hcqc - Investigate milc regression in gcc-8

6 years, 7 months

[ANNOUNCE] Arm Binary A-profile Toolchain Release GCC 8.2-2018.11

by Przemyslaw Wirkus

The Arm GNU Toolchain for the A-profile Architecture ===================================================== The Arm GNU Toolchain for the A-profile Architecture 8.2-2018.11 Release is now available. Arm is pleased to announce the first Arm-built release of the pre-built GNU cross-toolchain for the A-profile cores: GCC 8.2-2018.11. This is the same toolchain that was previously built and distributed by Linaro. For the official announcement, see: https://community.arm.com/tools/b/blog/posts/pre-built-gnu8-cross-toolchain… For more information about the GNU Arm toolchain and to download the release packages, see the Arm Developer website at: https://developer.arm.com/open-source/gnu-toolchain/gnu-a For an explanation of FSF GCC 8 series changes see: https://gcc.gnu.org/gcc-8/changes.html For help in porting to GCC 8 see the following explanation: https://gcc.gnu.org/gcc-8/porting_to.html Download the release packages from: (sources) https://developer.arm.com/open-source/gnu-toolchain/gnu-a/downloads (binaries) https://developer.arm.com/open-source/gnu-toolchain/gnu-a/downloads Previous snapshots and release-candidates for GCC 7 and earlier are at: (sources) https://releases.linaro.org/components/toolchain/gcc-linaro/ (binaries) http://snapshots.linaro.org/components/toolchain/binaries/ Previous releases for GCC 7 and earlier are at: http://releases.linaro.org/components/toolchain/binaries/ A description of the Arm and AArch64 target triples can be found at: https://collaborate.linaro.org/display/TCWGPUB/ARM+and+AArch64+Target+Tripl… Host Requirements ================== * Ubuntu 14.04 LTS x86_64 or later or RHEL 6.9 x86_64: * x86_64 hosted cross compiler for AArch64 ELF bare-metal target (x86_64-aarch64-elf). * x86_64 hosted cross compiler for AArch64 ELF bare-metal, big-endian target (x86_64-aarch64_be-elf). * x86_64 hosted cross compiler for AArch64 GNU/Linux target (x86_64-aarch64-linux-gnu). * x86_64 hosted cross compiler for AArch64 GNU/Linux big-endian target (x86_64-aarch64_be-linux-gnu). * x86_64 hosted cross compiler for AArch32 bare-metal target (x86_64-arm-eabi). * x86_64 hosted cross compiler for AArch32 target with soft float (x86_64-arm-linux-gnueabi). * x86_64 hosted cross compiler for AArch32 target with hard float (x86_64-arm-linux-gnueabihf). * Windows 7 or later, for 32 and 64 bit OS: * i686-mingw32 hosted cross compiler for AArch32 bare-metal target (i686-mingw32-arm-eabi). * i686-mingw32 hosted cross compiler for AArch64 ELF bare-metal target (i686-mingw32-aarch64-elf). Package Versions ================= GCC 8.2.1 https://gcc.gnu.org/gcc-8/changes.html FSF glibc 2.28 http://lists.gnu.org/archive/html/info-gnu/2018-08/msg00000.html Newlib 3.0.0 https://sourceware.org/ml/newlib/2018/msg00019.html GNU Binutils 2.30 https://lists.gnu.org/archive/html/info-gnu/2018-01/msg00010.html FSF GDB 8.1.1 https://www.gnu.org/software/gdb/download/ANNOUNCEMENT libiconv 1.15 https://savannah.gnu.org/forum/forum.php?forum_id=8790 libexpat 2.2.5 https://github.com/libexpat/libexpat/blob/R_2_2_5/expat/Changes libgmp 4.3.2 libisl 0.15 libmpfr 3.1.6 libmpc 0.8.2 Sources provided in release source tar ball. News for GCC 8 (as of GCC 8.2-2018.11) ======================================= * Bug-fix of "Mingw32 version of GCC 8.2 for ARM Cortex-A family fails to compile with option '-mabi=ilp32'". https://bugs.linaro.org/show_bug.cgi?id=4020 * No other changes between this release and GCC 8.2-2018.08. For more details about Spectre V1 defense in GCC visit: https://lwn.net/Articles/759423/ Contact Arm ============ For any questions, please use the Arm Communities forums at: https://community.arm.com/tools/ Please report any bugs via the Linaro Bugzilla at: https://bugs.linaro.org/

6 years, 7 months

[ACTIVITY] Week 46

by Yvan Roux

o 4 days week. o LLVM * 7.0.1-rc2: - Miscompare on AArch64 is related to host compiler, still digging. * Machine Outliner on ARM prototype: - IR Outliner experiments: Commented upstream, and reducing problematic test case. o Misc * Various meetings and discussions.

6 years, 7 months

[ACTIVITY] week ending 25 Nov 2018

by Richard Henderson

Four day week (Happy Thanksgiving, all you Europeans) [Upstream] Posted patches making bswap during qemu_ld/st optional. The prompt was reviewing the tcg/riscv/ patch set, but I've wanted to do this for ages. This should avoid the need for reservation of scratch registers on some hosts that can ill afford it -- in particular i386 and aa32. In the process I ran into two other places that x86 used those scratch registers: stores from non-q-registers and bsd-user. I included patches for both of those (freebsd only; net/openbsd will work so long as guest_base == 0 and will abort at runtime otherwise). I still need to audit the other hosts before dropping the call-clobbering from user-only within tcg.c. r~

6 years, 7 months

[ACTIVITY] 19-23 November 2018

by Christophe Lyon

== Progress == * FDPIC - Cortex-M uClibc-ng patch merged - GCC: no feedback yet on v4 patches * GCC upstream validation: - reported a few regressions - dealing with some random results, again - trying qemu-3.1.0-rc1, maybe some memory consumption problems, tbc * GCC: - bug report on aarch64 about misaligned accesses. I do not have access to LHG gerrit, Maxim will look at isolating the problem. - rebased ubsan / bare-metal patches. Really need to look at how to merge them into LLVM * misc (conf-calls, meetings, emails, ....) - reviewing infra script patches - ran Spec2006 using gcc-8.2 sysroot, to avoid differences caused by glibc versions. Fortran benchmarks could not run when compiled with gcc-5/gcc-6 because libgfortran changed .so version compared to gcc-8. == Next == FDPIC: - GCC: handle feedback on v4 patches - uclibc-ng: look at how to test fdpic mode with openadk Benchmarks: - collect results Validation: - check if qemu-3.1.0-rc1 is OK for my GCC validations

6 years, 7 months

[Activity] week ending November 23rd 2018

by Peter Smith

[LLVM-486] Error id user defines _GLOBAL_OFFSET_TABLE_ (upstream review) [LLVM-484] Fix linker script dynamic relocations combination into a single output section (upstream review) [LLVM-483] cortex-a53 erratum fix interaction with TLS relaxation (upstream review) [LLVM-489] Measure (cross) linking performance of LLD for AArch64 and Arm. Looking for large projects that I can build for Arm and AArch64 - Firefox seems to have some ARM Android cross build support but it does not appear to be working too well. - Chrome can cross build to ARM and AArch64 Android. Have been able to build AArch64 so far. Notably both projects don't support building natively on AArch64, there are quite a few build dependencies for which only x86 support is available. Raised Jira tickets for recent PRs fixed 2019 Planning - Drafted objectives document for LLVM team - Drafted some Jira suggestions for TCWG

6 years, 7 months

[ACTIVITY] week ending Nov. 25 2018

by Alex Bennée

QEMU Tooling ([VIRT-252]) ========================= [VIRT-252] https://projects.linaro.org/browse/VIRT-252 QEMU plugin support ([VIRT-280]) - continued reviewing Emilio's {RFC 00/48} Plugin support Message-Id: <20181025172057.20414-1-cota(a)braap.org> - port my example tools to his framework :todo [VIRT-280] https://projects.linaro.org/browse/VIRT-280 Upstream Work ([VIRT-109]) ========================== - finished reviewing {RFC PATCH v2 00/23} KVM: arm64: Initial support for SVE guests Message-Id: <1538141967-15375-1-git-send-email-Dave.Martin(a)arm.com> [VIRT-109] https://projects.linaro.org/browse/VIRT-109 Other Tasks =========== - started The QEMU initiative thread Message-Id: <87wop4gezg.fsf(a)linaro.org> for JIRA discussion Completed Reviews [3/3] ======================= {RFC PATCH v2 00/23} KVM: arm64: Initial support for SVE guests Message-Id: <1538141967-15375-1-git-send-email-Dave.Martin(a)arm.com> - CLOSING NOTE [2018-11-22 Thu 15:36] My only major concern is if the query API is too gold plated. {RFC PATCH 0/2} docker: Add gentoo-mipsr5900el-cross image Message-Id: <20181118203312.5376-1-f4bug(a)amsat.org> {PATCH} docker: dockerfile for openSUSE Leap Message-Id: <87k1lai2vo.fsf(a)linaro.org> Absences ======== - Christmas Holidays - Connect BKK19 (1-5th April 2019) Current Review Queue ==================== * {RFC 00/48} Plugin support Message-Id: <20181025172057.20414-1-cota(a)braap.org> * {Qemu-devel} {PATCH for-4.0 v2 00/37} tcg: Assorted cleanups Message-Id: <20181123144558.5048-1-richard.henderson(a)linaro.org> * {Qemu-arm} {PATCH v5 00/16} gdbstub: support for the multiprocess extension Message-Id: <20181110081147.4027-1-luc.michel(a)greensocs.com> * {Qemu-arm} {PATCH 00/13} Support disabling TCG on ARM Message-Id: <20181113165247.4806-1-sameo(a)linux.intel.com> * {PATCH 0/7} Acceptance Tests: basic architecture support Message-Id: <20181004151429.7232-1-crosa(a)redhat.com> * {PATCH v7 00/19} Fixing record/replay and adding reverse debugging Message-Id: <20181010133333.24538.53169.stgit@pasha-VirtualBox> -- Alex Bennée

6 years, 7 months

[ACTIVITY] report week ending 23 Nov

by Peter Maydell

Progress: * VIRT-65 [QEMU upstream maintainership] - release work - code review - sent patch fixing Coverity issue in Xen PCI device passthrough (this was our last outstanding issue with no patch on the list!) * VIRT-268 [QEMU support for dual-core Cortex-M Musca board] - some initial investigation of what changes are going to be needed for heterogenous-cpu support in QEMU - started on a test case using the existing xnlx-zcu102 board (which has a heterogenous config that works only by accident) thanks -- PMM

6 years, 7 months

[ACTIVITY] 19 - 23 November 2018

by Diana Picus

== Progress == # Monday off # [LLVM-479] Check current status of GlobalISel - Looked into new patterns that can be selected by TableGen and forked LLVM-481 and LLVM-482 out of that - Ran a test-suite and a selfhost with GlobalISel and had a look at the fallbacks # [LLVM-481] [ARM GlobalISel] Test BFC - Committed upstream # [LLVM-482] [ARM GlobalISel] Enable CLZ - Most of the work is done, ready to commit next week == Plan == Wrap up LLVM-482 and LLVM-479 Fork more stories out of LLVM-479

6 years, 7 months

Linaro GCC 6.5 2018.11 source snapshot [final]

by Mark Murray

The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2018.11 snapshot of Linaro GCC 6 source package. o This Linaro GCC 6 snapshot[1] is based on FSF GCC 6.5+svn265890 and includes performance improvements and bug fixes backported from mainline GCC. This snapshot will be part of the final maintenance release, as the upstream GCC 6 branch is at the end of its maintenance lifespan. This snapshot tarball is available on: http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.5-2018.11/ Interesting changes in this GCC source package snapshot include: * Updates to GCC 6.4+svn265890 o 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@ * Bug reports should be filed in Bugzilla against GCC product: http://bugs.linaro.org/enter_bug.cgi?product=GCC * Interested in commercial support? inquire at "Linaro support": mailto:support@linaro.org [1]. Source package snapshots are defined when the compiler is only put through unit-testing and full validation is not performed. Mark Murray Staff Software Engineer | Arm . . . . . . . . . . . . . . . . . . . . . . . . . . . p: +44 1223 405082 arm.com <http://www.arm.com> 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.

6 years, 7 months

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