linaro-toolchain

linaro-toolchain@lists.linaro.org

2 participants
5705 discussions

by Yvan Roux

o Still part time at university. o LLVM * Still working on machine outliner RFC comments. o Misc * Various meetings and discussions.

7 years, 3 months

[ACTIVITY] week ending 10 Feb 2019

by Richard Henderson

[VIRT-242 # ARMv8.3-JSCVT ] Posted v1 & v2. [VIRT-339 # ARMv8.5-BTI, Branch Target Identification ] Posted v3. [VIRT-327 # Richard's upstream QEMU work ] Posted v3 of arm tcg vector improvements. Now uses ssadd & usadd tcg opcodes from AdvSIMD and not just SVE. This would have made it easier to find a bug in my previous tcg backend patches. Found the last two bugs in a conversion of target/hppa to decodetree, and posted the patch set. Sent pull request for some other queued hppa patches. Fix a minor RISU bug wrt SVE. [LoAAS] Travel to/from Cambridge for 2 days of Linux on ARM Summit. r~

7 years, 3 months

[ACTIVITY] 4-8 February 2019

by Christophe Lyon

== Progress == * FDPIC - (GNU-411) GDB: debugging problems with FDPIC support. * GCC upstream validation: - reported a few regressions, helping test patches - dealing with some random results, still * GCC: - (GNU-99) rebased ubsan / bare-metal patches. No progress. * misc (conf-calls, meetings, emails, ....) - reviewing/submitted infra script patches - debugging new benchmarking round-robin jobs == Next == FDPIC: - GCC: handle feedback on v4 patches - GDB: update patches - uclibc-ng: look at how to test fdpic mode with openadk Infra: - benchmarking jobs

7 years, 3 months

[ACTIVITY] week ending Feb. 10 2019

by Alex Bennée

QEMU Tooling ([VIRT-252]) ========================= QEMU plugin support ([VIRT-280]) - re-based [ldst demacro to v3] - recollect stats to see if slowdown still there :todo - awaiting v3 of plugin patches [VIRT-280] https://projects.linaro.org/browse/VIRT-280 [ldst demacro to v3] https://github.com/stsquad/qemu/tree/ldst/demacrofy-v3 Upstream Work ([VIRT-109]) ========================== - need to finish the re-work of [system test and misc arch] tests :todo - will be useful for test cases for plugins - also more test cases queued up for system tests - debugged an occasional failure in pauth-1 test case - expected given PAuth architecture, test needs tightening up - posted {PATCH v1 0/4} HWCAP_CPUID registers for aarch64 Message-Id: <20190128173940.25813-1-alex.bennee(a)linaro.org> - posted {PATCH v2 0/6} HWCAP_CPUID registers for aarch64 Message-Id: <20190205190224.2198-1-alex.bennee(a)linaro.org> - posted {PATCH v2 00/16} current testing/next queue (with build fixes) Message-Id: <20190207183744.5054-1-alex.bennee(a)linaro.org> - this fixes regression of check-tcg but also - discovered the Debian Buster's QEMU arm64 packaging is broken - spent time trying to able to join #debian's IRC channels (aws hosts banned!) - tried to revive the cross-tools packaging I'd started with Wookey last Connect [VIRT-109] https://projects.linaro.org/browse/VIRT-109 [the linux-user multiarch but it is not ready yet] https://github.com/stsquad/qemu/tree/testing/next-with-linux-user [system test and misc arch] https://github.com/stsquad/qemu/tree/testing/enable-system-tcg-tests-v2 Other ===== - Connect talk has been accepted, Friday 8.30 slot Completed Reviews [1/1] ======================= {Qemu-arm} {PATCH v6 00/73} per-CPU locks Message-Id: <20190130004811.27372-1-cota(a)braap.org> - CLOSING NOTE [2019-02-08 Fri 17:19] Looks good, improves MTTCG scalability to 10-12 core now ;-) Absences ======== - 15-18th Feb (long w/e) - Connect BKK19 (1-5th April 2019) - holiday after Connect Current Review Queue ==================== * {RFC} arm: Allow system registers for KVM guests to be changed by QEMU code Message-Id: <20181206151401.13455-1-peter.maydell(a)linaro.org> * {RFC v2 00/38} Plugin support Message-Id: <20181209193749.12277-1-cota(a)braap.org> * {RFC QEMU v2 0/2} arm/virt: Account for guest pause time Message-Id: <1543352837-21529-1-git-send-email-bijan.mottahedeh(a)oracle.com> * {PATCH v12 00/25} Fixing record/replay and adding reverse debugging Message-Id: <154935478086.7509.4349987292919289245.stgit@pasha-VirtualBox> * {PATCH v2 00/18} OpenBSD: Enable qtesting Message-Id: <20190129175403.18017-1-philmd(a)redhat.com> * {PATCH v11 00/25} Fixing record/replay and adding reverse debugging Message-Id: <20190131131520.23264.75724.stgit@pasha-VirtualBox> -- Alex Bennée

7 years, 3 months

[ACTIVITY] report week ending 8 Feb

by Peter Smith

Fosdem: - Presented on LLD performance at LLVM devroom https://fosdem.org/2019/schedule/track/llvm/ - Other interesting presentations from the devroom include: -- Compiling the Linux kernel with LLVM tools -- Lessons in TableGen LLVM-523 LLD should synthesise .cantunwind .ARM.exidx sections for sections without them - Implementation and regression tests done. Will do a bit more testing and post upstream on Monday. LLVM-521 Taking the address of an ifunc in LLD - Spent some time reviewing upstream patch that should fix the remaining LLD ifunc address equivalence problems for all Targets.

7 years, 3 months

[ACTIVITY] report week ending 8 Feb

by Peter Maydell

Progress: * VIRT-65 [QEMU upstream maintainership] + reviewed RTH's patchsets for BTI and MemTag support * VIRT-268 [QEMU support for dual-core Cortex-M Musca board] + Implemented a first pass at a Musca board model, which has the PPC and MPC infrastructure, plus RAM, and ROM for the flash; need to add at least the UARTs and do some testing * misc + sorting out travel arrangements, visa, etc for Connect + kicked off a discussion on whether there are aspects of QEMU's role as the userspace component of a KVM VM that Linaro should be putting more effort/attention into thanks -- PMM

7 years, 3 months

[ACTIVITY] 4 - 8 February 2019

by Diana Picus

== Progress == * Out of office on Monday * [Thumb GlobalISel] Support G_GEP [LLVM-532] - Committed upstream * [Thumb GlobalISel] Support G_ICMP [LLVM-528] - Committed upstream * [Thumb GlobalISel] Support G_SELECT [LLVM-529] - Almost ready to commit * LLVM 8.0.0 Release for ARM & AArch64 [LLVM-526] - rc2 in progress * Minor changes to Jenkins jobs [LLVM-533] - TCWG Regression Detection job: launch LLVM 7.0.0 release on xenial containers (as opposed to 6.0.0 on trusty) - Release job: forced parallelism to 3 on the TK1s, to reduce some of the swapping; also posted a patch upstream to allow us to use ninja, so we can limit only the number of link jobs (like we do on the buildbots) == Plan == * Continue LLVM-526 and LLVM-529 * Use new version of GCC on buildbots [LLVM-515] - Restart the buildbots so they begin using GCC 7

7 years, 3 months

[ACTIVITY] 4 February - 8 February 2019

by Prathamesh Kulkarni

== This Week == * SVE ACLE (4/10) - svlsl * Getting familiar with GCC's vectorizer (4/10) * Validation (1/10) - Upstream monitoring job * Misc (1/10) - Meetings == Next Week == - Continue ongoing tasks

7 years, 3 months

[BUG REPORT] The bare-metal toolchains for aarch64 cannot link objects successfully

by Junling Zheng

Hi, I found that the bare-metal toolchains for aarch64 from Linaro could not seem to link objects to generate executable files successfully. ==================== Toolchain: https://releases.linaro.org/components/toolchain/binaries/7.3-2018.05/aarch… ==================== Testcase: > cat test.c #include <stdio.h> int main(int argc, char* argv[]) { printf("Hello World!\n"); return 0; } > aarch64-elf-gcc -o test test.c .../gcc-linaro-7.3.1-2018.05-x86_64_aarch64-elf/bin/../aarch64-elf/libc/usr/lib/crt0.o: In function `_start': /home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-elf/snapshots/newlib.git~linaro-local~linaro-newlib-2_5_0/libgloss/aarch64/crt0.S:148: undefined reference to `initialise_monitor_handles' .../gcc-linaro-7.3.1-2018.05-x86_64_aarch64-elf/bin/../aarch64-elf/libc/usr/lib/libc.a(lib_a-exit.o): In function `exit': /home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-elf/snapshots/newlib.git~linaro-local~linaro-newlib-2_5_0/newlib/libc/stdlib/exit.c:70: undefined reference to `_exit' .../gcc-linaro-7.3.1-2018.05-x86_64_aarch64-elf/bin/../aarch64-elf/libc/usr/lib/libc.a(lib_a-sbrkr.o): In function `_sbrk_r': /home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-elf/snapshots/newlib.git~linaro-local~linaro-newlib-2_5_0/newlib/libc/reent/sbrkr.c:58: undefined reference to `_sbrk' .../gcc-linaro-7.3.1-2018.05-x86_64_aarch64-elf/bin/../aarch64-elf/libc/usr/lib/libc.a(lib_a-writer.o): In function `_write_r': /home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-elf/snapshots/newlib.git~linaro-local~linaro-newlib-2_5_0/newlib/libc/reent/writer.c:58: undefined reference to `_write' .../gcc-linaro-7.3.1-2018.05-x86_64_aarch64-elf/bin/../aarch64-elf/libc/usr/lib/libc.a(lib_a-closer.o): In function `_close_r': /home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-elf/snapshots/newlib.git~linaro-local~linaro-newlib-2_5_0/newlib/libc/reent/closer.c:53: undefined reference to `_close' .../gcc-linaro-7.3.1-2018.05-x86_64_aarch64-elf/bin/../aarch64-elf/libc/usr/lib/libc.a(lib_a-lseekr.o): In function `_lseek_r': /home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-elf/snapshots/newlib.git~linaro-local~linaro-newlib-2_5_0/newlib/libc/reent/lseekr.c:58: undefined reference to `_lseek' .../gcc-linaro-7.3.1-2018.05-x86_64_aarch64-elf/bin/../aarch64-elf/libc/usr/lib/libc.a(lib_a-readr.o): In function `_read_r': /home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-elf/snapshots/newlib.git~linaro-local~linaro-newlib-2_5_0/newlib/libc/reent/readr.c:58: undefined reference to `_read' .../gcc-linaro-7.3.1-2018.05-x86_64_aarch64-elf/bin/../aarch64-elf/libc/usr/lib/libc.a(lib_a-fstatr.o): In function `_fstat_r': /home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-elf/snapshots/newlib.git~linaro-local~linaro-newlib-2_5_0/newlib/libc/reent/fstatr.c:62: undefined reference to `_fstat' .../gcc-linaro-7.3.1-2018.05-x86_64_aarch64-elf/bin/../aarch64-elf/libc/usr/lib/libc.a(lib_a-isattyr.o): In function `_isatty_r': /home/tcwg-buildslave/workspace/tcwg-make-release/builder_arch/amd64/label/tcwg-x86_64-build/target/aarch64-elf/snapshots/newlib.git~linaro-local~linaro-newlib-2_5_0/newlib/libc/reent/isattyr.c:58: undefined reference to `_isatty' collect2: error: ld returned 1 exit status In addition, there was the same bug in 7.4.1-2019.02 version, but not in arm-eabi or armeb-eabi. Is there anyone fixing this? Thanks, Junling

7 years, 3 months

[ACTIVITY] 28 January 2019 - February 1 2019

by Prathamesh Kulkarni

== This Week == * SVE ACLE (6/10) - svlsl * Validation (2/10) - Upstream monitoring job based on round-robin - LLVM Buildbot babysitting * PR88839: Poor implementation of blend like permutes (1/10) * Misc (1/10) - Meetings == Next Week == - Continue ongoing tasks

7 years, 3 months

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