[ACTIVITY] 1 - 5 July 2019
== Progress == * LLVM SPEC2k6 Performance Analysis [LLVM-134] - Still working around perf version mismatches, going to investigate if we can use a newer version of perf to collect data - Had a look at the assembly for sphinx from gcc-6, clang-3.9.1 and clang-8.0.0, but going to wait for better perf before I rush to conclusions * IR SVE Reviews [ LLVM-545] - Had a look at the clang patches, gave some feedback for one of them; the other ones are very subtle and best left to the clang maintainers * [GlobalISel] Refactor CallLowering [LLVM-568] - Fixed a little ASAN snag, should be done for good now * Trying to get up an ABI fuzzer for GlobalISel == Plan == * Update benchmarking infrastructure (in support of LLVM-134) * Deprioritize GlobalISel * Upcoming vacation: 6 - 13 August ___ linaro-toolchain mailing list linaro-toolchain@lists.linaro.org https://lists.linaro.org/mailman/listinfo/linaro-toolchain
[ACTIVITY] 1 - 5 July 2019
== This Week == * PR88833 - Fixed pending issues with x86 and committed fix to trunk * PR90723 - Issue seems to be infinite recursion overflowing the stack, investigating. * Misc - Meetings == Next Week == - PR90723 - Add testsuite comparison to tcwg_gnu ___ linaro-toolchain mailing list linaro-toolchain@lists.linaro.org https://lists.linaro.org/mailman/listinfo/linaro-toolchain
[ACTIVITY] 1-5 July 2019
== Progress == * GCC: - FDPIC: No progress, still waiting for feedback - noinit attribute: reviewers asked to make it a generic attribute, rather than target-specific. New patch sent. * GNU-583 (Fix Linux kernel built for Thumb-2 with GCC using LTO) - no progress this week * GCC upstream validation: - reported a few regressions. * Binutils: - PR24709 (linker crash and assertion failure with CMSE). Use case not considered worth the headache of supporting correctly CSME+long-branch stubs (tricky to get right). Replaced the linker crash with a user error message. - Non-contiguous memory regions support in the BFD linker: Received a good summary of the consensus reached in 2017. * misc: - infra fixes / troubleshooting == Next == GCC: - handle feedback on FDPIC and noinit patches - binutils/linker support for non-contiguous memory regions - GNU-583 - GCC upstream validation: Add a config for cortex-m33 (v8-m) == Holidays == July 13-27 Aug 2-11 ___ linaro-toolchain mailing list linaro-toolchain@lists.linaro.org https://lists.linaro.org/mailman/listinfo/linaro-toolchain
[ACTIVITY] report week ending July 5
Progress: * VIRT-65 [QEMU upstream maintainership] + catching up with email and code review -- managed to get some series reviewed in time for softfreeze on Tuesday, notably the 'sbsa-ref' reference platform model that Hongbo Zhang was working on + a lot of release-herding, working through the huge pile of pull requests that need merging + fixed a silly bug in recent VFP refactoring, spotted by coverity + fixed a memory leak that broke our CI sanitizer build (not a new piece of code, but we currently only sanitize the x86-64 targets and a recent change meant this old code is now used on x86-64 for the ATI PCI display device model) * Misc: + first KVM Forum Programme Committee meeting (and attendant review of all the submitted abstracts; bumper crop this year) thanks -- PMM ___ linaro-toolchain mailing list linaro-toolchain@lists.linaro.org https://lists.linaro.org/mailman/listinfo/linaro-toolchain
[ACTIVITY] week ending Jul. 7 2019
QEMU Tooling ([VIRT-252])
=
QEMU plugin support ([VIRT-280])
- posted {PATCH v1 0/4} arm semihosting cleanups Message-Id:
<927219a5-a56d-bbbe-26ed-ffb8be12f...@linaro.org>
- this makes some of the plugin cpu_load interface easier
[VIRT-280] https://projects.linaro.org/browse/VIRT-280
[v4 branch] https://github.com/stsquad/qemu/tree/plugins/plugins-v4
GSoC Mentoring ([VIRT-348])
- starting to look quite workable
- might be able to remove CONFIG_PROFILER and have something dynamic
and always available
[VIRT-348] https://projects.linaro.org/browse/VIRT-384
Upstream Work ([VIRT-109])
==
- we have entered 4.1 soft freeze
- posted {PULL v2 00/20} testing/next for 4.1 Message-Id:
<20190702102505.32044-1-alex.ben...@linaro.org> failed to merge
- posted {PULL v3 00/19} testing/next for 4.1 (tests/vm, Travis and
hyperv build fix) Message-Id:
<20190705101816.10291-1-alex.ben...@linaro.org>
- posted {PATCH for 4.1 0/5} tcg tests and gdbstub fixes Message-Id:
<20190705160421.19015-1-alex.ben...@linaro.org>
[VIRT-109] https://projects.linaro.org/browse/VIRT-109
Completed Reviews [1/1]
===
{Qemu-devel} {PATCH v3 5/6} monitor: adding info tb and tbs to monitor
Message-Id: <20190702210017.4275-1-vanderson...@gmail.com>
Absences
- 18-19th July
Current Review Queue
* {RISU RFC PATCH v2 00/14} Support for generating x86 MMX/SSE/AVX test images
Message-Id: <20190701043536.26019-1-jan.bo...@gmail.com>
* {PATCH 0/2} tests/acceptance: Add test of NeXTcube framebuffer using OCR
Message-Id: <20190629150056.9071-1-f4...@amsat.org>
* {Qemu-devel} {PATCH 0/4} Introduce the microvm machine type
Message-Id: <20190628115349.60293-1-...@redhat.com>
* {PATCH 0/3} tests/acceptance: Add tests for the Leon3 board
Message-Id: <20190627115331.2373-1-f4...@amsat.org>
* {PATCH 0/5} tests/acceptance: Add bFLT loader linux-user test
Message-Id: <20190625101524.13447-1-phi...@redhat.com>
* {PATCH v2 0/9} KVM: arm/arm64: vgic: ITS translation cache
Message-Id: <20190611170336.121706-1-marc.zyng...@arm.com>
--
Alex Bennée
___
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[ACTIVITY] week ending 5th July 2019
[Code size investigation] Results (clang 2% larger than gcc) replicated on cortex-m0 and cortex-m4 on Zephyr. - Clang optimisation to use BLX rather than BL when same function called multiple times is a pessimisation on Zephyr, especially on M0. - GCC register allocation seems to result in fewer spills TODO: Get an estimate of how much code-size difference is down to different inlining decisions. On CMSIS DSP cortex-m4f clang appears to be producing smaller than GCC, not measured averages yet. [LLD] - Quite a few upstream reviews, PRs and investigations surrounding them. - Likely that LLD will be converting to the new variable naming convention. - Received a request to add cortex-a8 erratum fix for Google Android team. [Linaro Connect] Registered and contacted travel. Drafted a submission for presentation, will submit next week. Planned Absences: On holiday Wednesday, Thursday, Friday next week ___ linaro-toolchain mailing list linaro-toolchain@lists.linaro.org https://lists.linaro.org/mailman/listinfo/linaro-toolchain
