[hellollvm] OSDT Weekly 2026-10-28 第382期

Wei Wu (吴伟)Nov 2, 2026

# OSDT Weekly 2026-10-28 第382期

点击「查看原文」跳转到 GitHub 上对应文件，链接就可以点击了。或直接点击： https://github.com/hellogcc/osdt-weekly/tree/master/weekly-2026

## 近期活动预告

- 一年一度的开源开发工具大会（OSDTConf2026）即将开始征稿，预计12月份召开。有可能采用线上线下混合模式。

## 编译社区的八卦信息

- 过了万圣节，就要准备圣诞了。欧美的开发者进展有可能会逐渐慢下来直到元旦结束。如果还有一些patch想要合入的话，11月份要抓紧了。

### GNU Tools Weekly News Week 61(2026 年 10 月 25 日)

> **原文标题**:GNU Tools Weekly News Week 61 (October 25, 2026) > **原文地址**:https://gcc.gnu.org/pipermail/gcc/2026-October/249048.html > **作者**:Andrew Pinski([email protected],Qualcomm 的 GCC 维护者) > **说明**:本文为该期周报的中文翻译。

- **提醒:GCC 17 的 Stage 1 将于 2026-11-15 结束**(Reminder GCC 17 Stage 1
ends 2026-11-15)

- **GNU toolchain Cauldron 2026 的会议视频已上传到 youtube**(GNU toolchain
Cauldron 2026 videos were added to youtube)
- 会议 wiki:https://gcc.gnu.org/wiki/cauldron2026
- 视频列表(youtube
playlist):https://www.youtube.com/watch?v=COiMstTSL1E&list=PLCosWOOi4IhM
- **Linux Plumbers 2026 的 toolchain track 视频也已上线**(Linux Plumbers 2026
toolchain track videos are up too)
- https://lpc.events/event/20/sessions/274/#20261005
- **David Faust 成为 GCC BPF port 的 co-maintainer**(David Faust is a
co-maintainer of the GCC BPF port)
- https://inbox.sourceware.org/gcc/CALvbMcDnmc13Ewbptzjn_3fz9S0sVm8tp_8BxYO9=Zu_amw06Q@mail.gmail.com/T/

本周 GCC 入门级 issue(GCC easy issue to tackle of the week)

- **在 RTL 中,`op0 != 0 ? op0 & op1 : 0` 可以直接优化为 `op0 & op1`**
- 原文表述:`op0 != 0 ? op0 & op1 : 0` can be optimized to just `op0 & op1` in RTL
- Bugzilla:https://gcc.gnu.org/bugzilla/show_bug.cgi?id=128063
- 可就该 issue 联系 **Andrea Pinski** `<[email protected]>`
获取指导(mentoring)。原文此处写作 "Andrea Pinski",照录(同名应为作者 Andrew Pinski)。
- 往期入门级 issue 列表见:https://gcc.gnu.org/wiki/EasyIssuesOfTheWeek

GCC 讨论(GCC discussion)

- **[RFC] 期望补丁在进入 gcc-patches 之前先经过 AI 辅助预审**([RFC] Expecting
AI-assisted pre-review of patches before they hit gcc-patches)
- https://inbox.sourceware.org/gcc/CAFULd4YrGNf=ofefSi3qxwqLg2HKP+L-EgRD+COWdmh=7Spmkw@mail.gmail.com/
- **RFC:面向静态安全(static safety)的特性**(RFC: feature for static safety)
- https://inbox.sourceware.org/gcc/[email protected]/T/

glibc 讨论(glibc discussion)

- **glibc 的 AI 政策(第三轮):采用 GCC 的 AI 政策**(glibc AI policy. Round 3.
Adopt the GCC AI policy)
- https://inbox.sourceware.org/libc-alpha/[email protected]/T/

### LLVM/Clang/LLDB/LLD

本节内容来自 [LLVM Weekly 第 669 期](http://llvmweekly.org/issue/669)， [Alex Bradbury](https://www.linkedin.com/in/alex-bradbury/) 大哥持续稳定输出。

- [LLVM FOSDEM 2027
devroom](https://discourse.llvm.org/t/fosdem-2027-llvm-devroom-call-for-presentations/92597)
与 [MLIR FOSDEM 2027
devroom](https://discourse.llvm.org/t/fosdem-2027-mlir-devroom-call-for-presentations/92599)
的演讲征集(CfP)现已开放。两者的提交截止日期均为 11 月 22 日。FOSDEM 将于 1 月 30 日和 31 日举行。

- Grigory Pastukhov 就混合使用小代码模型与大代码模型（注：编译术语，不是LLM）提出了一个 [LLD
提案](https://discourse.llvm.org/t/rfc-lld-mixing-small-and-large-code-models-demote-large-sections-referenced-from-small-code/92553):「当小代码通过
32 位重定位引用一个大段时,我们提议把该段降级(demote)为小段。降级会清除 SHF_X86_64_LARGE 标志并去掉段名的 l
前缀,于是链接器会把它与小段一并放置。这使得把分别以小型与大型代码模型编译的翻译单元(TU)链接进同一个二进制变得可行。」

- Stephen Tozer 发布了一则 [关于计划中的 LLVM 调试信息 API
变更的公告](https://discourse.llvm.org/t/psa-planned-llvm-debug-info-api-changes/92551)。

- 关于 Flang 开发的[新一期进展更新现已发布](https://discourse.llvm.org/t/flang-liaison-report-to-j3/68468/14)。

- 好耶！来自任天堂(Nintendo)的 Henry Cheang 发布了一份关于[在 Clang 与 LLVM 中引入
Nintendo 目标三元组(target
triple)](https://discourse.llvm.org/t/rfc-proposal-to-add-nintendo-target-to-clang-and-llvm/92585)
的 RFC。

- LLVM 基金会 9 月董事会会议纪要[已公布](https://discourse.llvm.org/t/board-meeting-minutes-sep-4-2026/92555)。

- Aaron Ballman 与 Clang area team 发起了一场关于 [Parser 与 Sema
的库分层](https://discourse.llvm.org/t/library-layering-of-parser-and-sema/92573)
的讨论,指出由于一系列原因(包括语言标准委员会越来越多以语言改写规则的形式来规定语义),或许值得考虑 Parser 与 Sema
继续分离是否仍然合理。将就此主题举办一次设计讨论,请有兴趣者告知可参加的时间,以便安排最合适的时段。

- 啊，LLDB还有GUI？？ Raphael Isemann 发起了两条讨论:[LLDB
测试不稳定(flaky)的现状](https://discourse.llvm.org/t/the-lldb-flakey-test-situation/92550)
与[移除 LLDB 的 GUI
模式](https://discourse.llvm.org/t/rfc-removing-gui-mode/92570)。

- 郑同学稳步前进： Yingwei Zheng 分享说,[llvm-ub-aware-interpreter 现在有了基于 Wasm
构建的在线「llubi playground」](https://discourse.llvm.org/t/rfc-upstreaming-llvm-ub-aware-interpreter/89645/15)。

- 需要看看： LLVM 文档的「landing your
changes」一节已更新,以反映当前的工作流程。[3b4061c](https://github.com/llvm/llvm-project/commit/3b4061ce1974)。

- 龙芯加油：为 LoongArch 增加了 MachineCombiner
支持。[59cdc9a](https://github.com/llvm/llvm-project/commit/59cdc9a5e41f)。

- 长寿的AIX：作为在 AIX 上支持 address sanitizer
工作的一部分,现在已支持影子内存。[52f8774](https://github.com/llvm/llvm-project/commit/52f8774eb9e4)。

- 日拱一卒：Flang 新增了 LoopTripCountVersioning pass,它会对最内层 `fir.do_loop`
做版本化,前提是该循环的 trip count 是运行期值且很可能等于编译期常量
N。[7bb03d8](https://github.com/llvm/llvm-project/commit/7bb03d8afce3)。

- 日拱一卒： LLVM 的 libc 中实现了 `popen` 与
`pclose`。[c759b57](https://github.com/llvm/llvm-project/commit/c759b57a74de)。

### QEMU

- [PATCH v2 00/10] Add the RCPU to Tenstorrent Atlantis
https://lists.nongnu.org/archive/html/qemu-riscv/2026-10/msg01264.html

- [PATCH v6 0/6] riscv: implement Ssqosid extension and CBQRI controllers
https://lists.nongnu.org/archive/html/qemu-riscv/2026-10/msg01186.html

- [PATCH v2 0/2] hw/riscv: add RPMI support for server reference platform
https://lists.nongnu.org/archive/html/qemu-riscv/2026-10/msg01180.html

- [PATCH v12 00/10] riscv: add initial RPMI virt support
https://lists.nongnu.org/archive/html/qemu-riscv/2026-10/msg01169.html

- [PATCH v5 0/4] riscv: AIA: Add in-kernel irqchips save and restore
function support
https://lists.nongnu.org/archive/html/qemu-riscv/2026-10/msg01158.html

- [PATCH v3 0/9] multi-target: add riscv64-softmmu
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg06755.html

- [PATCH 0/1] Hexagon: add FP exception
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg08435.html

- [PATCH 0/4] Harmony sound card driver for 32-bit PA-RISC machines
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg08422.html

- [PATCH v2 0/9] target/mips: Re-introduce the R5900 CPU (system) +
sort tcg tests
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg08352.html

- [PATCH 0/2] file-posix: Add 'accept-read-only-device' option
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg08216.html

- [PATCH v3 00/16] tcg: Introduce INDEX_op_lea
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg08193.html

- [PATCH 0/4] accel/mshv: add support for PIC interrupt injection
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg08112.html

- [PATCH V19 00/14] iothread: Support tracking and querying IOThread holder
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg08043.html

- [PATCH v7 0/8] hw/usb: Add a usbredir server transport
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg07964.html

- [PATCH v2 00/13] hw/arm/aspeed: Add AST1040 FMC/SPI controllers and
unimplemented devices
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg07956.html

- [PATCH 0/8] HPPA architecture patches for HP-UX 9 and 715 machine
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg07917.html

- [PATCH v2 0/8] usb-mouse: high-resolution vertical and horizontal
wheel support
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg07876.html

- [PATCH 0/3] hw/misc: QUP UART device
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg07797.html

- [PATCH v2 00/18] whpx: i386: updates for QEMU 11.2
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg07725.html

- [PATCH v6 00/17] hw/arm/raspi4b: working PCIe and GENET (real networking)
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg07638.html

- [PATCH v4 0/25] hw/mips: add Octeon III EBB7304 support
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg07550.html

- [PATCH v7 0/9] pnv/phb5: Update PHB4 to the latest PHB5 spec
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg07538.html

- [PATCH 0/7] hw/ufs: Add RPMB well-known logical unit emulation
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg07470.html

- [PATCH v3 0/3] SEV-SNP: Add support for SNP certificate fetching
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg07346.html

- [PATCH v15 0/7] Add full zoned storage emulation to the qcow2 driver
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg07186.html

- [PATCH RESEND v3 0/7] hw/nvme: lift IOV_MAX limit in DMA path
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg07148.html

- [PATCH 0/3] hw/gpio: Add Xilinx AXI GPIO device and
petalogix_s3adsp1800 integration
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg07086.html

- [PATCH v2 00/31] target/rx: add RXv2/RXv3 CPU support and RX peripherals
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg07045.html

- [PATCH v2 0/3] Hexagon: Add v79, v81 HVX fp/vcvt instructions
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg06867.html

- [PATCH v2 0/2] hexagon roms: add H2 firmware
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg06864.html

- [PATCH v6 0/4] vfio-user: support multiple FDs backing region mmaps
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg06726.html

- [PATCH v2 0/9] tricore: MPU support, ASCLIN/STM/SCU models and TC397 TriBoard
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg06713.html

- [PATCH v2 00/13] VFIO device migration parallel state transitions
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg06684.html

- [PATCH v3 0/8] hw/ufs: Add fault injection, update TMR doc, and add qtests
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg06421.html

- [PATCH v2 0/1] target/arm/kvm: handle KVM_EXIT_ARM_SEA
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg06366.html

- [PATCH v3 00/16] Hexagon: Add real SoC-style machines
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg06255.html

- [PATCH v4 00/11] Hexagon: Add support for v83, v85
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg06112.html

- [PATCH 0/8] vhost-user: another try at supporting any POSIX system
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg06079.html

- [PATCH v3 00/18] monitor/hmp: replace MonitorDef with GDB registers
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg06006.html

- [PATCH v3 0/8] target/sparc: Add support for SPARC crypto instructions
https://lists.nongnu.org/archive/html/qemu-devel/2026-10/msg05943.html

### RISC-V in China

- 物奇微称累计使用 RISC-V 核超 6 亿颗, WQ9301 成为国内极少数实现量产出货的 Wi-Fi 6 AP 芯片, 双频并发
3Gbps：[汇聚产业芯力量，物奇微携全系列RISC-V芯片亮相第六届RISC-V中国峰会](https://www.wuqi-micro.com/about-wuqi/news-and-events/newss/89)
- 清华系优智创芯完成近亿元 Pre-A 轮融资, 「全赢芯」RISC-V GPGPU 项目落地长沙金霞, 总投资约 15
亿元分三期建设：[一颗“芯”，为何选择长沙？](https://www.icswb.com/h/107000/20261022/1000874_m.html)
- 奕行智能成为 RVAI 工作组八家首批发起单位之一, 64 节点 E200-L 液冷超节点已在运营商机房上线,
芯片间百纳秒级互联：[智算向新，开源铸根｜奕行智能亮相2026
RISC-V中国峰会暨香山如意生态大会](https://ijiwei.com/n/1123506)
- 36 氪引弗若斯特沙利文数据, 具身智能芯片中 RISC-V 渗透率从 2025 年 10.7% 升至 2030 年 28.2%,
主控芯片市场四年增约 34 倍：[从PPT到机房：RISC-V迎来RVA23落地之年，AI与物理AI双线突围](https://www.36kr.com/p/4043763478287494)
- 睿思芯科谭章熹称二三十家高性能 RISC-V 公司终将洗牌, 生态权重高于核性能, 第七届峰会投稿 239 篇、同比增近
20%：[专访谭章熹：RISC-V迈向规模化商用，下一场硬仗在数据中心](https://m.21jingji.com/article/20261023/herald/d50e4a21fda2ba70d994818284d90aad_zaker.html)

### RT-Thread 社区

- ESP32-C3/C6 适配 ESP-IDF v6.1 合入主线, RISC-V 工具链从 GCC 11.2 升到 15.2, 改动
55 文件 +4564/-333：[[bsp][esp32] adapt C3/C6 to ESP-IDF v6.1 and bump
RISC-V toolchain to gcc
15.2](https://github.com/RT-Thread/rt-thread/pull/11870)
- 全志 F101 与 H616 的 BSP 提案一次带入 172 个文件 +35428 行, 含 DE0/TCON0 显示后端与
MIPI-DSI 屏支持：[[bsp][allwinner] Add F101 YuzukiNeko, H616 BSP and
driver support](https://github.com/RT-Thread/rt-thread/pull/11877)
- Env SDK 合入 tricore-gcc 13.4.1 与 qemu-tricore, 覆盖 AURIX
TC2xx/TC3xx/TC4xx, 车规架构先解决能编能跑能调：[Add tricore-gcc toolchain for Linux
and Windows](https://github.com/RT-Thread/sdk/pull/9)
- lwp_syscall.c 一万一千行按子系统拆分, 165 个系统调用入口行为不变, 22 文件
+12223/-11638：[[components][lwp] split syscall implementation by
subsystem](https://github.com/RT-Thread/rt-thread/pull/11894)
- 32 位 RT-Smart 的 sys_poll 按 nfds 乘积回绕, 8 字节堆块被当 0x20000001 项遍历,
内核堆越界读写, 影响 v5.0.0 至 master：[[Bug] lwp: sys_poll nfds wraparound on
32-bit RT-Smart — 8-byte heap block walked as 0x20000001 entries,
kernel heap OOB read/write and
crash](https://github.com/RT-Thread/rt-thread/issues/11925)

### AI Compilers

- TileOPs 0.1.0 为首个正式版, 收进 206 个算子, H200 上 2265 行基准中 2262 行不慢于最快实现,
几何平均 1.37 倍：[v0.1.0 — Growing an operator library with agents and an
AI compiler](https://github.com/tile-ai/TileOPs/releases/tag/v0.1.0)
- TileLang 合入 DeepSelect Top-K 示例, 129 组配置中 BF16、批 6、N 为 16384 的一组相对
torch.topk 加速 8.00 倍：[[Example] Add DeepSelect
Top-K](https://github.com/tile-ai/tilelang/pull/3304)
- 达摩院玄铁在 FlagBLAS 一次补齐 AMAX 至 SWAP 共 15 组 BLAS1 算子, 17 个文件新增 16168 行,
数值库从空档转为可用：[Add T-Head L1
support](https://github.com/flagos-ai/FlagBLAS/pull/154)
- SemiAnalysis 报告称获昇腾支持的六个仓库中只有 TileLang 可用, 950 后端已并入主仓, AutoSchedule
让小尺寸单算子最多缩短 40%：[The Huawei-DeepSeek
Symbiosis](https://newsletter.semianalysis.com/p/huawei-deepseek)
- LLVM 上游一小时内将 17 个 RISC-V pass 迁入 NewPM, 覆盖 VSETVLI 插入、VMV0 消除与压栈优化,
RuyiAI 分支换基即带上：[[RISCV] Port RISCVInsertVSETVLI to
NewPM](https://github.com/RuyiAI-Stack/llvm-project/commit/5055010181910b15c2cc07c39485fc3956cbdf76)

### 本周工具链岗位

**往期社招及实习生招聘长期有效。**

- [实习机会：openEuler
操作系统机器人软件包维护（K181）](https://mp.weixin.qq.com/s/z6qy59r_9sfz6bfrI3rP5g)
- [实习机会：openKylin
具身智能案例开发（K182）｜甲辰计划联合培养](https://mp.weixin.qq.com/s/wrqDwVKXzUCOiVAb44rwag)
- [远程实习：RT-Thread
嵌入式开发（K183）｜甲辰计划联合培养](https://mp.weixin.qq.com/s/MmQCT2RzpGK5VjxqS6vXBg)

### 本周推荐阅读

本周推荐：《家有恶猫》

作者：米歇尔·内格尔施耐德

译者：刘波