OSDT Weekly 第343期

近期活动预告

编译社区的八卦信息

GCC

• [PATCH] Enabling POPCNT generation for 32-bit pattern from Hacker's Delight https://gcc.gnu.org/pipermail/gcc-patches/2026-January/706587.html

• [PATCH] vect: Only scale vec_offset once [PR123767]. https://gcc.gnu.org/pipermail/gcc-patches/2026-January/706615.html

• [PATCH v2] Add [[gnu::disable_coverage]] attribute https://gcc.gnu.org/pipermail/gcc-patches/2026-January/706702.html

• [RFC O/2] libstdc++: Implement PL007 changes to submdspan https://gcc.gnu.org/pipermail/gcc-patches/2026-January/706747.html

• [PATCH 0/9 v4] C++26 Contracts initial implementation. https://gcc.gnu.org/pipermail/gcc-patches/2026-January/706805.html

• [PATCH] RISC-V: Fix ABI vector passing on stack and GPR [PR123824]. https://gcc.gnu.org/pipermail/gcc-patches/2026-January/706853.html

• [PATCH v4 0/1] AArch64: SVE_BFSCALE support https://gcc.gnu.org/pipermail/gcc-patches/2026-January/706889.html

BINUTILS

• [PATCH v4 0/2] sframe: Fix sframe handling when doing garbage collection https://sourceware.org/pipermail/binutils/2026-January/147902.html

• [PATCH v5 00/12] PR ld/24600: Add general linker support for mapless archives https://sourceware.org/pipermail/binutils/2026-January/147951.html

GDB

• [PATCH v2 0/8] Correctly handle inline functions with dwz https://sourceware.org/pipermail/gdb-patches/2026-January/224499.html

• [PATCH v2 0/9] Add new command to print the shadow stack backtrace https://sourceware.org/pipermail/gdb-patches/2026-January/224388.html

GLIBC

• [PATCH v2 00/13] Consolidate and optimize f{max,min}* functions https://sourceware.org/pipermail/libc-alpha/2026-January/174350.html

• CTI - Making a decision for glibc. https://sourceware.org/pipermail/libc-alpha/2026-January/174457.html

• [PATCH 00/11] Add binary64 cosh/sinh/tanh CORE-MATH implementations to libm https://sourceware.org/pipermail/libc-alpha/2026-January/174559.html

LLVM/Clang/LLDB/LLD

本节内容来自 LLVM Weekly 第 630 期， Alex Bradbury 大哥持续稳定输出。

• 请关注： Voting should open very soon for the 2026 LLVM Community Area Team Elections, running through to February 9th. Keep an eye on the LLVM announcements category on Discourse.

• 欧洲LLVM开发者会议开始买票了： Registration is now open for EuroLLVM 2026. Register by 1st March for the early bird rate. The conference will take place on April 14th-15th in Dublin, with pre-conference events on April 13th.

• 这周末/下周： For those of you at FOSDEM, be sure to check out the LLVM dev room on Saturday. It looks like a really interesting program that I'm looking forward to catching up on once videos are posted.

• 太好了是宋教授： Fangrui Song wrote about long branches in compilers, assemblers, and linkers.

• 非常好的总结： My Igalia colleague Luke Lau has posted a 2nd part to his exploration of RISC-V LLVM performance improvements, this time walking through improvements to loop vectoriser cost modelling that lead to a 7% gain in a particular SPEC benchmark.

• 本周 LLVM IR 的改动讨论非常多： Nuno Lopes, Juneyoung Lee, Pedro Lobo, and George Mitenkov posted an RFC on adding a new byte type to LLVM IR to represent raw memory data in registers and enable the eventual removal of undef from LLVM IR.

• 本周 LLVM IR 的改动讨论非常多： Abhilash Majumder started an RFC discussion on allowing LLVM's control flow graph infrastructure to work with PTX. Nikita Popov suggested that framing this as "CFG for MC" and making it not PTX specific may be a path forwards.

• 本周 LLVM IR 的改动讨论非常多： Sam Elliott started a discussion on disabling clang-format for TableGen within the LLVM tree given that most TableGen in tree appears not to use it. This was agreed, and issues filed for improving clang-format's output with TableGen.

• CHERI真是个大工程： Some initial patches for RVY (RISC-V CHERI) MC layer support started to land. 5eb3969.

• 本周 LLVM IR 的改动讨论非常多： In addition to all the other additions mentioned above, the specification for float min/max operations has been clarified/changed after a very lengthy RFC discussion. 6bae2a9.

• 日积跬步： A weak AVL tree implementation was added to LLVM's libc and used to implement tsearch. db71332.

QEMU (RISC-V)

RISC-V in China

• https://ruyisdk.cn 每日八卦都在这里了。

RT-Thread 社区

AI Compilers

本周工具链岗位

往期社招及实习生招聘长期有效。

• 实习岗位9月汇总（甲辰计划2025年）
• Nvidia在北京办公室新开放了一个AI负责人岗位。点击这里查看
• 京东开放JavaScript引擎开发岗位，参与京东JS引擎能力建设
• 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：《石油战争》

作者：威廉·恩道尔

译者：赵刚

推荐：小编1号

现在，美国的航空母舰正在驶往伊朗。新的石油战争一触即发。没有什么时候比现在更适合拿起这本书，复习一下我们在中学课本中学习到的英美交替的石油美元霸权理论了。不同的是这是外国学者多年学术工作的结果，言语更加的直白，指名道姓，阅读起来就像是一把回忆的钉耙，不断的在读者的脑子里翻腾尘封的记忆，很刺激，有一种重新获得知识的快感，就像是卧床已久的人重新站起来开始在阳光下跑步。