OSDT Weekly 第275期

近期活动

开源开发工具大会（OSDTConf 2024）就要开始征稿了！今年计划依然在北京举行。

编译社区的八卦信息

• 这个有意思了： 《A Lisp compiler to RISC-V written in Lisp》 http://www.ulisp.com/show?4Y20 上了 HackerNews: https://news.ycombinator.com/item?id=41808696

• C++ 中文周刊 本期未更新

GCC

• [PATCH v4 0/7] OpenMP: dispatch + adjust_args support https://gcc.gnu.org/pipermail/gcc-patches/2024-October/664340.html

• [PATCH v4] RISC-V: Implement TARGET_CAN_INLINE_P https://gcc.gnu.org/pipermail/gcc-patches/2024-October/664416.html

• [PATCH 0/8] aarch64: Add new flags for existing features https://gcc.gnu.org/pipermail/gcc-patches/2024-October/664566.html

• [PATCH v6] RISC-V: Implement __init_riscv_feature_bits, __riscv_feature_bits, and __riscv_vendor_feature_bits https://gcc.gnu.org/pipermail/gcc-patches/2024-October/664431.html

BINUTILS

• [PATCH] RISC-V: Add Ssqosid extension support. https://sourceware.org/pipermail/binutils/2024-October/137113.html

• [PATCH] RISC-V: Add an implicit dependency for Zawrs https://sourceware.org/pipermail/binutils/2024-October/137114.html

• [PATCH 0/2] x86/APX: misc fixes https://sourceware.org/pipermail/binutils/2024-October/137134.html

GDB

• [PATCH 0/5] Set osabi in remote target descriptions https://sourceware.org/pipermail/gdb-patches/2024-October/212193.html

GLIBC

• Handling C2Y zero-length operations on null pointers

  https://sourceware.org/pipermail/libc-alpha/2024-October/160375.html

• [PATCH] powerpc64le: ROP changes for _init/_fini https://sourceware.org/pipermail/libc-alpha/2024-October/160393.html

• [PATCH v2 0/8] Updates for Linux 6.11 https://sourceware.org/pipermail/libc-alpha/2024-October/160453.html

LLVM/Clang/LLDB/LLD

本节内容来自 LLVM Weekly 第 562 期， Alex Bradbury 大哥持续稳定输出。

• 今年北美LLVMDevMtg很火爆，注册满了已经： Registration for the 2024 LLVM Developers' Meeting will close on October 11th. Also, volunteer session moderators are being sought.

• 值得阅读： Min-Yih Hsu write a blog explaining RVVBitsPerBlock in the RISC-V LLVM backend (which of course by necessity explains a lot more about how codegen for the RISC-V vector extension works!).

• 看看： Tomas Vondra blogged about applying BOLT to Postgres, exploring the performance gains achieved on pgbench.

• GSoC收尾： Vinicius Espindola wrote on the LLVM blog about their GSoC project: ABI lowering in ClangIR.

• 祝贺！ Arm engineers blogged about their contributions to LLVM in the 19 release.

• 稳定： LLVM 19.1.1 was released.

• Alex Bradbury 的最新幻灯片： Slides I presented at the RISC-V Summit Europe on supporting custom RISC-V extension in LLVM are now online (apologies, it wasn't recorded so no video to link to).

• 感谢： Thanks to work from Fraser Cormack, a lexer for LLVM's TableGen is now merged into Python's pygments syntax highlighting library and should be in the next release.

• 同意，尤其是在 xz backdoor 事件之后： Tom Stellard sought ideas for how best to remove test binaries from the git repo, motivated by a desire to avoid attacks where someone modifies the build system in a subtle way that executes one of the binaries rather than reading them as test input.

• 大扫除： Tom Stellard is intending to archive some old repositories in the LLVM organisation on GitHub. As noted in the replies, this is an easily reversible operation.

• 看看新网站： Chaitanya Shahare shared that the development version of the in-progress LLVM website redesign is now live at www-new.llvm.org.

• 收藏了先： Slides and a recording of the recent MLIR meeting on XLA indexing maps are now available.

• Smarter： X86InstComments printing logic was made smarter, gaining the ability to print simplified expressions for vpternlog semantics. aa02b76.

• Arm架构也有这么多小版本号么： Basic definitions were added for Armv9.6-A. d0756ca.

QEMU (RISC-V)

• [RFC v2 0/2] target/riscv: use a simplified loop to emulate rvv loads/stores only in user mode., https://lists.gnu.org/archive/html/qemu-riscv/2024-10/msg00025.html

• [PATCH v9 00/12] riscv: QEMU RISC-V IOMMU Support, https://lists.gnu.org/archive/html/qemu-riscv/2024-10/msg00074.html

• [PATCH v1 0/7] target/riscv: Support SXL32 on RV64 CPU, https://lists.gnu.org/archive/html/qemu-riscv/2024-10/msg00152.html

• [PATCH v16 00/20] riscv support for control flow integrity extensions, https://lists.gnu.org/archive/html/qemu-riscv/2024-10/msg00192.html

• [PATCH RFC 00/10] Allow platform specific PMU event encoding, https://lists.gnu.org/archive/html/qemu-riscv/2024-10/msg00221.html

• [PATCH v5 00/12] tcg/riscv: Add support for vector, https://lists.gnu.org/archive/html/qemu-riscv/2024-10/msg00139.html

RISC-V in China

• 著名的 Box86/Box64 模拟器现在有了更好的 RISC-V RVV 1.0 支持，性能提升显著（转载）
• 人物｜张松松：在 Fedora RISC-V 生态探索中砥砺前行

RT-Thread 社区

• 国庆前夕，2024 年汽车操作系统与 AI 大模型生态大会在上海浦东临港滴水湖云厅举行，睿赛德科技荣获汽车操作系统 TOP10，详情可查看：https://mp.weixin.qq.com/s/nRr1cYePr94M8p1-LZyg8g

• 超睿科技（上海）有限公司（UltraRISC Technology），作为高性能多核RISC-V处理器的领先供应商，宣布将全力支持 RT-Thread Smart 操作系统，双方共同为大芯片领域提供高效的软硬件结合解决方案，详情可查看：https://mp.weixin.qq.com/s/W7gGZby7iuLsa0EsunLNwQ

• RT-Thread 全面支持 NXP FRDM-MCXC444 开发板。NXP FRDM-MCXC444 开发板是一款基于 MCX C444 MCU 的高性能开发板，它集成了丰富的硬件资源和接口，支持快速原型设计，详情可查看：https://mp.weixin.qq.com/s/2NZS2ruT4pOtIoZf34SbEA

AI Compilers

• 风平浪静。招募志愿者小编。

本周工具链岗位

往期社招及实习生招聘长期有效。

• 开源实习岗位2024春季上新！PLCT实验室开放多个编译器开源实习岗位

本周推荐阅读

本周推荐：《面向成果管理》

作者： 彼得.德鲁克（Peter F. Drucker）

译者： 刘雪慰 / 徐孝民

推荐： 小编1号

大师的著作值得系统性的、反复的阅读，一开始是虚心求教的阅读，等有了一定的管理实践经验之后，就可以审慎地、批判性的、辩证的阅读，从细节处对比自己所处的环境与大师写作时候的年代背景的差异，这些差异导致你可以看到哪些道理是具有普遍性的、哪些判断是根据环境而不同的。

本书一开始就有不少表格和数字，很有可能让人望而却步的跳过去。我鼓励各位耐心的尝试多看几遍，理解各种数字背后的逻辑关系，与作者的描述的论断对比着看。只有这样，才更有可能获得自己独到的见解。