OSDT Weekly 第231期

近期活动

编译社区的八卦信息

• C++ 中文周刊 第 140 期

GCC

• LoongArch的Architecture Enablement和Optimization越来越细 [PATCH v2 0/3] LoongArch D support https://gcc.gnu.org/pipermail/gcc-patches/2023-December/638879.html

  [PATCH] LoongArch: Add support for TLS descriptors https://gcc.gnu.org/pipermail/gcc-patches/2023-December/638907.html

  [PATCH v2 0/5] Add support for approximate instructions and optimize divf/sqrtf/rsqrt operations. https://gcc.gnu.org/pipermail/gcc-patches/2023-December/639280.html

• [PATCH v2 00/17] Support Intel APX NDD https://gcc.gnu.org/pipermail/gcc-patches/2023-December/639246.html

• SME支持merge了！[pushed v2 00/25] aarch64: Add support for SME https://gcc.gnu.org/pipermail/gcc-patches/2023-December/639325.html

• [PATCH] aarch64: modify Ampere CPU tunings on reassociation/FMA https://gcc.gnu.org/pipermail/gcc-patches/2023-November/638723.html

• [RFC] i386: Remove Xeon Phi ISA support https://gcc.gnu.org/pipermail/gcc-patches/2023-December/638855.html

• [PATCH] RISC-V: Update crypto vector ISA info with latest spec https://gcc.gnu.org/pipermail/gcc-patches/2023-November/thread.html#start

• [PATCH] RISC-V: Support highpart register overlap for vwcvt https://gcc.gnu.org/pipermail/gcc-patches/2023-November/638575.html

• [PATCH v2] LoongArch: Add intrinsic function descriptions for LSX and LASX instructions to doc. https://gcc.gnu.org/pipermail/gcc-patches/2023-November/638697.html

Binutils/GDB

• [PATCH v1 0/4] LoongArch: Add support for TLS Descriptors (TLSDESC) https://sourceware.org/pipermail/binutils/2023-December/130916.html

• [PATCH v1 0/5] LoongArch tls le model linker relaxation support. https://sourceware.org/pipermail/binutils/2023-December/130934.html

• [PATCHv6 00/10] thread-specific breakpoints in just some inferiors https://sourceware.org/pipermail/gdb-patches/2023-December/204733.html

GLIBC

• [PATCH v9 0/6] RISC-V: ifunced memcpy using new kernel hwprobe interface https://sourceware.org/pipermail/libc-alpha/2023-November/153043.html

• [PATCH] LoongArch: Add support for TLS Descriptors https://sourceware.org/pipermail/libc-alpha/2023-December/153052.html

• [PATCH] aarch64: correct CFI in rawmemchr (bug 31113) https://sourceware.org/pipermail/libc-alpha/2023-December/153099.html

LLVM/Clang/LLDB/LLD

本节内容来自 LLVM Weekly 第 518 期， Alex Bradbury 大哥持续稳定输出。

• 放假的时候仔细看看： Another dozen videos from the LLVM Dev Meeting are now up on YouTube. Lots of great stuff there, e.g. my Igalia colleague Luke Lau's presentation on vector codegen in the RISC-V backend.

• 还有机会： The deadline for the FOSDEM LLVM devroom CfP has been extended to 8th December.

• 国内有伙伴感兴趣么？ Ryan Joseph kicked off an interesting thread about LLVM compile times, prompting responses covering things like improvements in recent years and how Mojo deals with this challenge.

• 华人贡献者越来越多了，值得称赞： Wang Pengcheng posted an RFC thread on code-size optimisations of SelectionDAG's MatcherTable, linking to patches written so far that reduce the MatcherTable size by 14% average for in-tree targets.

• X86还在不断演进： The X86 backend can now use PUSHP/POPP and PUSH2[P]/POP2[P] for register spilling and reloading when targeting a machine with the 'PPX' extension. cb112eb.

• 试试？ Terminator folding was enabled for RISC-V. e947f95.

• 好消息： The RISC-V backend's split regalloc pass structure for RVV is now enabled by default. d0a39e6.

• 加油！ LLVM's libc implementation docs were brought up to date. 43f783f.

• Picolibc 是提供标准 C 库 API 的库，适用于 RAM 有限的小型嵌入式系统。 Picolibc 是由 Newlib 和 AVR Libc 的代码混合而成的。使用的时候需要看看LICENSE说明，用BSD-like的部分： Initial support was added for using picolibc with libcxx. 8aeaceb.

QEMU (RISC-V)

• 风平浪静。招募志愿者小编。

RISC-V in China

• RISC-V全球锦标赛｜首批赛题正式公布！

RT-Thread 社区

• 风平浪静。招募志愿者小编。

TVM / 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。

• 商汤科技研究院招聘LLVM编译器开发工程师
• PLCT Lab 新开放100名开源实习岗位，面向 RISC-V 移植操作系统、数据库、网络基础库
• PLCT 实习： BJ100 RISC-V nettle 开发实习生
• PLCT 实习： BJ99 RISC-V OpenSSL 开发实习生
• PLCT 实习： BJ98 Flutter RISC-V 开发实习生
• 开源实习：算能科技招募AI开源工具链开发（TPU-MLIR项目）
• DynamoRIO RISC-V 移植开发实习生招聘（PLCT实验室）
• PLCT实验室开始招募 Mono 系统开发实习生，负责 RISC-V 移植及优化
• PLCT实验室长期招募安卓系统（AOSP）开发实习生，升级和维护 AOSP for RISC-V 开源项目

本周推荐阅读

本周推荐：《秋瑾》

作者： 张海鹏、曲宁宁

推荐： 小编1号

本文文笔朴实，简要完整的记录了秋瑾短暂而跌宕起伏的一生。在字里行间能够逐渐的感受到秋瑾的一股气，鼓舞着我。秋瑾死后尸骨十次迁移，也是让人感慨心酸不已；而她的几位知己姐妹的忠义侠气，又让我感到无比的温暖和释然。如此每次路过西湖孤山，有了一种不一样的历史沉重感。

上个月偷闲去了绍兴，特地去参观了秋瑾故居。房间和院落得以较好的恢复和保留，能够看到传统书香官宦的气息。绍兴多以鲁迅出名，来鉴湖女侠故居的游客很少。坐在后院，听风吹过树叶，沙沙作响，回想女侠生平，不知如今的太平，是否能让女侠欣慰。