OSDT Weekly 第254期

近期活动

• 5月18日北京软件所有RuyiSDK线下聚会
• 5月19日北京雁栖湖有RISC-V大型活动
• 5月26日上海有RISC-V移植优化锦标赛活动

编译社区的八卦信息

• C++ 中文周刊，未更新，上期是第 156 期

GCC

• H.J.Lu可能是最早从事GNU toolchain的华人吧，恭喜H.J开始享受退休生活 [PATCH] Add myself to DCO https://gcc.gnu.org/pipermail/gcc-patches/2024-May/651160.html

• [PATCH 0/2] Support APX zero-upper https://gcc.gnu.org/pipermail/gcc-patches/2024-May/651710.html

• [PATCH 0/2] Align tight loops to solve cross cacheline issue https://gcc.gnu.org/pipermail/gcc-patches/2024-May/651699.html

• [PATCH] RISC-V: Implement -m{,no}fence-tso https://gcc.gnu.org/pipermail/gcc-patches/2024-May/651685.html

• [PATCH 00/12] aarch64: Extend aarch64_feature_flags to 128 bits https://gcc.gnu.org/pipermail/gcc-patches/2024-May/651621.html

• [PATCH v2 0/2] RISC-V improve stack/array access by constant mat tweak https://gcc.gnu.org/pipermail/gcc-patches/2024-May/651478.html

• [SUBREG V4 0/4] Add DF_LIVE_SUBREG data and apply to IRA and LRA https://gcc.gnu.org/pipermail/gcc-patches/2024-May/651366.html

Binutils/GDB

• [RFC] Draft Xtensa FDPIC ABI https://sourceware.org/pipermail/binutils/2024-May/134040.html

• [PATCH 2/2] gas, aarch64: Add SVE2 lut extension https://sourceware.org/pipermail/binutils/2024-May/134037.html

• [PATCH 0/6] Arm64: (mostly) SVE adjustments https://sourceware.org/pipermail/binutils/2024-May/134014.html

• [PATCH v3 0/5] Add support for AArch64 MOPS instructions https://sourceware.org/pipermail/gdb-patches/2024-May/209064.html

• [PATCHv6 0/9] x86/Linux Target Description Changes https://sourceware.org/pipermail/gdb-patches/2024-May/208992.html

GLIBC

• [PATCH 0/6] MIPS: Improve math https://sourceware.org/pipermail/libc-alpha/2024-May/156661.html

• [PATCH] manual: Recommendations for dynamic linker hardening https://sourceware.org/pipermail/libc-alpha/2024-May/156645.html

• [PATCH 3/3] aarch64/fpu: Add vector variants of pow https://sourceware.org/pipermail/libc-alpha/2024-May/156709.html

LLVM/Clang/LLDB/LLD

本节内容来自 LLVM Weekly 第 541 期， Alex Bradbury 大哥持续稳定输出。

• 补充阅读： As part of trying to catch up on my blogging backlog, I wrote a new post with notes and thoughts from the Carbon panel session at EuroLLVM last month.

• 感兴趣可以看看： Raymon Chen wrote a blog providing an informal comprison of three major implementations of std::string.

• 基础设施很重要： Lucile Rose Nihlen outlined Google's plan for the LLVM presubmit infrastructure.

• 火爆： The 65th edition of MLIR News is now available (I guess I missed commenting on the 2^6 milestone - major credit is due to Javed Absar for carrying the torch on this).

• 宋教授堪称劳模： Fangrui Song posted an RFC on handling some constructs such as .if not currently supported in integrated assemblers.

• MLIR太火爆了： There was a lot of further discussion on the idea of a 'stack' MLIR dialect.

• 更快速地试用： .option arch in RISC-V assembly now accepts the names of experimental extensions. d70267f.

• 相互提升： LoongArch gained a 'W' instruction MI-level optimisation pass inspired by the equivalent one in RISC-V. e9bcd2b.

QEMU (RISC-V)

• [PATCH v9 0/6] Pointer Masking update for Zjpm v1.0, https://lists.gnu.org/archive/html/qemu-riscv/2024-05/msg00060.html

• [PATCH] target/riscv/cpu.c: fix Zvkb extension config, https://lists.gnu.org/archive/html/qemu-riscv/2024-05/msg00068.html

• [PATCH 0/2] Minor fixes and improvements for Virtual IRQs, https://lists.gnu.org/archive/html/qemu-riscv/2024-05/msg00099.html

• [PATCH] target/riscv: rvzicbo: Fixup CBO extension register calculation, https://lists.gnu.org/archive/html/qemu-riscv/2024-05/msg00113.html

• [PATCH] dias/riscv: Decode all of the pmpcfg and pmpaddr CSRs, https://lists.gnu.org/archive/html/qemu-riscv/2024-05/msg00114.html

• [PATCH v2] target/riscv: Remove experimental prefix from "B" extension, https://lists.gnu.org/archive/html/qemu-riscv/2024-05/msg00128.html

• [RESEND PATCH v2 0/5] target/riscv: Support RISC-V privilege 1.13 spec, https://lists.gnu.org/archive/html/qemu-riscv/2024-05/msg00149.html

RISC-V in China

• 首届 RISC-V 软件移植及优化锦标赛欢庆会暨第二届启动仪式，诚挚邀请您来参加

第一届RISC-V移植与优化锦标赛圆满结束。选手们神仙打架，参赛代码提交已经在多个开源社区和RISC-V厂商中得到应用。冠军们举重若轻，让RISC-V生态变得更加完善美好。预祝第二届RVSPOC更上层楼, 荣光落于刀锋之上！

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。

• 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：《精英的傲慢》

作者: [美]迈克尔·桑德尔

译者: 曾纪茂

推荐: 小编1号

作者从第一页就给出了直接清晰的说明，并进而通过大量的案例不厌其烦地证明了在全世界大范围铺开不到百年的绩效为上如何逐渐累积扭曲社会的结构和价值观。

身处当今中国大陆的生活，阅读本书感觉不能说完全相同，也可以说是一模一样。后背发汗的不安和被紧缚感，让我又清醒于自己作为一个半吊子精英赢家和半吊子精英失败者，保持了一个自我反省的心。

本书是来自于罗翔老师的推荐。在此感谢罗翔老师在这个众神塌方的年代展示如何保持一颗卑微的身段，让迷茫的年轻人至少多了一个可以观察的参考。