OSDT Weekly 第320期

近期活动预告

• 太热了，等天气凉快点再组织线下聚会。

编译社区的八卦信息

GCC

• [PATCH] RISC-V: fix __builtin_round clobbering FP exceptions flags [PR121534] https://gcc.gnu.org/pipermail/gcc-patches/2025-August/692605.html

• [PATCH v3] RISC-V: MIPS prefetch extensions for MIPS RV64 P8700 and can be enabled with xmipscbop. https://gcc.gnu.org/pipermail/gcc-patches/2025-August/692668.html

• [PATCH v9] Provide new option -fdiagnostics-show-context=N for -Warray-bounds, -Wstringop-* warnings [PR109071, PR85788, PR88771, PR106762, PR108770, PR115274, PR117179] https://gcc.gnu.org/pipermail/gcc-patches/2025-August/692698.html

• [PATCH v2] x86: Place the TLS call before all register setting BBs https://gcc.gnu.org/pipermail/gcc-patches/2025-August/692754.html

• [PATCH v1 0/4] RISC-V: Combine vec_duplicate + vmacc.vv to vmacc.vx on GR2VR cost https://gcc.gnu.org/pipermail/gcc-patches/2025-August/692807.html

• [C PATCH] c: Add -Wuse-after-missed-init [PR87038] https://gcc.gnu.org/pipermail/gcc-patches/2025-August/692882.html

• [PATCH] Thread the remains of vect_analyze_slp_instance https://gcc.gnu.org/pipermail/gcc-patches/2025-August/692900.html

BINUTILS

• [PATCH v3] x86-64: Add GLIBC_ABI_GNU2_TLS version dependency https://sourceware.org/pipermail/binutils/2025-August/143443.html

• [PATCH 0/5] SFrames: allow default-enabling via configure https://sourceware.org/pipermail/binutils/2025-August/143446.html

• [PATCH 1/4] RX: bfd rx-linux FDPIC support https://sourceware.org/pipermail/binutils/2025-August/143601.html

GDB

• [PATCH 0/3] Avoid unnecessary name lookups in C parser https://sourceware.org/pipermail/gdb-patches/2025-August/220005.html

• [PATCH] gdb: LoongArch: Recognize LoongArch v1.10 store conditional instructions https://sourceware.org/pipermail/gdb-patches/2025-August/220034.html

• [PATCH 1/4] gdb: LoongArch: Add the definition of loongarch_frame_cache https://sourceware.org/pipermail/gdb-patches/2025-August/220066.html

GLIBC

• [PATCH 0/7] htl: move sem* into libc https://sourceware.org/pipermail/libc-alpha/2025-August/169325.html

• [PATCH] i386: Also add GLIBC_ABI_GNU2_TLS version [BZ #33129] https://sourceware.org/pipermail/libc-alpha/2025-August/169360.html

• [PATCH 0/1] aarch64: Fix SVE powf routine. https://sourceware.org/pipermail/libc-alpha/2025-August/169373.html

• [PATCH] RISC-V: Add vector registers to __SYSCALL_CLOBBERS https://sourceware.org/pipermail/libc-alpha/2025-August/169390.html

LLVM/Clang/LLDB/LLD

本节内容来自 LLVM Weekly 第 607 期， Alex Bradbury 大哥持续稳定输出。

• 社区治理如烹小鲜： Renato Golin noted that the draft document on LLVM maintainer policy has been updated after feedback.

• 经验总结： Tobias Hieta asked for and received on advice for reducing executable size of a heavily optimised program.

• TableGen+MLIR？ Kshitij Jain is surveying people on their opinions on how TableGen could be better utilised in MLIR.

• 收藏： Slides and a recording from the MLIR open meeting on properties design are now available.

• Owen Anderson posted an RFC on adding a riscv32 subarchitecture for CHERIoT. Discussion is currently focused on whether adding a subarchitecture is necessary/best vs e.g. relying on selection via -march flags and/or the target OS in the triple.

• asb大佬更加活跃了： Alex Bradbury wrote a quick note sharing some numbers on the impact on dynamic instruction count of SPEC 2017 benchmarks on RISC-V for -ffp-contract=fast (matching GCC) vs LLVM's default.

• 日积跬步（几行代码修改了那么多测试用例）： Codegn for most significant bit extraction was improved for RISC-V. 18782db.

• Qihan Cai 厉害了： MC level support was added for more instructions from the proposed RISC-V P (packed SIMD) extension. e2eaea4.

QEMU (RISC-V)

• [PATCH v5 0/2] target/riscv: Generate strided vector ld/st with tcg https://lists.nongnu.org/archive/html/qemu-devel/2025-08/msg02725.html

RISC-V in China

• 风平浪静。日常的八卦可以去 RuyiSDK.cn 汇集地看到。

RT-Thread 社区

• RT-Thread 正式宣布启动 2025 年度嵌入式大赛！本次大赛分为 “嵌入式软件大赛” 和 “硬件拓展板设计大赛” 两大版块，携手瑞萨、英飞凌、ST、恩智浦、富瀚微、玄铁、兆易创新等全球顶尖芯片厂商，以及电子发烧友、KiCad 等合作伙伴，为开发者提供展示才华的顶级舞台。详情见：https://mp.weixin.qq.com/s/B4BATocDRMuEiwo5tVAfXA。

AI Compilers

• 风平浪静。

本周工具链岗位

往期社招及实习生招聘长期有效。

• 甲辰计划开放10名 VSCode RISC-V 插件开发实习岗位，睿赛德、苦芽科技、PLCT实验室联合招聘培养
• PLCT实验室春招 RISC-V 实习岗位汇总（2025年3月）｜甲辰计划开源实习生联合招聘培养
• openEuler RISC-V 实习机会暨OERV 实习岗位汇总｜RISC-V 与 Linux 发行版生态
• 大算力芯片公司招聘高级编译器研发工程师、GPU算法研发、集群互联开发等岗位

本周推荐阅读

本周推荐：《助推》

作者： 理查德·H·泰勒 / [美] 卡斯·H·桑斯坦

译者： 刘宁

推荐： 小编1号

不算很有意外的一本小册子，用大量的短小的生活轶事和故事来反复的讲述强化作者总结出来的一些观点理论。适合碎片时间阅读。

对于生活有知道的意义。例如我现在就意识到，我关于如何避免刷短视频的各种微小习惯调整就属于助推的范畴。