OSDT Weekly 第265期

近期活动

• 8月1日日本东京 RISC-V Day，有很多中国的小伙伴参加。
• 7月底八月初韩国 DebConf，有更多中国大陆的伙伴参加。

编译社区的八卦信息

• C++ 中文周刊 第 165 期

GCC

• [PATCH 0/5] RISC-V: Enable stack-clash protection https://gcc.gnu.org/pipermail/gcc-patches/2024-July/658164.html

• [PATCH v4 0/3] aarch64: Add initial support for +fp8 arch extensions https://gcc.gnu.org/pipermail/gcc-patches/2024-July/658787.html

• [PATCH 2/5] RISC-V: Move riscv_v_adjust_scalable_frame https://gcc.gnu.org/pipermail/gcc-patches/2024-July/658166.html

• [PATCH v3] RISC-V: Implement __init_riscv_feature_bits, __riscv_feature_bits, and __riscv_vendor_feature_bits https://gcc.gnu.org/pipermail/gcc-patches/2024-July/658576.html

• [PATCH] aarch64: Fuse CMP+CSEL and CMP+CSET for -mcpu=neoverse-v2 https://gcc.gnu.org/pipermail/gcc-patches/2024-July/658098.html

• [PATCH v2] AArch64: Add LUTI ACLE for SVE2 https://gcc.gnu.org/pipermail/gcc-patches/2024-July/658100.html

• [committed 00/11] aarch64: Extend aarch64_feature_flags to 128 bits https://gcc.gnu.org/pipermail/gcc-patches/2024-July/658138.html

• [committed 01/11] aarch64: Remove unused global aarch64_tune_flags https://gcc.gnu.org/pipermail/gcc-patches/2024-July/658139.html

• [committed 02/11] aarch64: Move AARCH64_NUM_ISA_MODES definition https://gcc.gnu.org/pipermail/gcc-patches/2024-July/658140.html

• [committed 03/11] aarch64: Eliminate a temporary variable. https://gcc.gnu.org/pipermail/gcc-patches/2024-July/658141.html

BINUTILS

• [PATCH v3 0/9] gas: scrubber adjustments https://sourceware.org/pipermail/binutils/2024-July/136045.html

• [PATCH 0/4] gas: command line handling adjustments https://sourceware.org/pipermail/binutils/2024-July/135998.html

• [PATCH 0/1] RISC-V: Support CORE-V XCVBITMANIP extension https://sourceware.org/pipermail/binutils/2024-July/136030.html

• [PATCH 0/3] gas: #APP / #NO_APP https://sourceware.org/pipermail/binutils/2024-July/135965.html

• [PATCH v3 0/3] gas: add command line option to inhibit info messages https://sourceware.org/pipermail/binutils/2024-July/135970.html

• [PATCH 1/1] RISC-V: Add support for XCVbitmanip extension in CV32E40P https://sourceware.org/pipermail/binutils/2024-July/136031.html

• [PATCH] RISC-V: PR32014, .option directives shuoldn't affect elf attribute. https://sourceware.org/pipermail/binutils/2024-August/136068.html

GDB

• [PATCH v3 0/7] Support for recording some AVX instructions https://sourceware.org/pipermail/gdb-patches/2024-July/210763.html

• [PATCH v2 0/4] Minor fixes to DAP breakpoint setting https://sourceware.org/pipermail/gdb-patches/2024-July/210642.html

• [PATCH 0/4] Minor fixes to DAP breakpoint setting https://sourceware.org/pipermail/gdb-patches/2024-July/210649.html

• [PATCH v2] gdb: aarch64: Support MTE on baremetal https://sourceware.org/pipermail/gdb-patches/2024-July/210684.html

• [PATCHv4 0/4] More build-id checking when opening core files https://sourceware.org/pipermail/gdb-patches/2024-July/210747.html

GLIBC

• differences for intel96 format between Intel and AMD hardware https://sourceware.org/pipermail/libc-alpha/2024-July/158520.html

• [PATCH 0/5] Updates for Linux 6.10 https://sourceware.org/pipermail/libc-alpha/2024-July/158721.html

• [PATCH v2 0/5] Add support for memory sealing https://sourceware.org/pipermail/libc-alpha/2024-July/158804.html

• [COMMITTED] aarch64: Regenerate ULPs https://sourceware.org/pipermail/libc-alpha/2024-July/158571.html

• [PATCH v4 0/4] Improve executable stack handling https://sourceware.org/pipermail/libc-alpha/2024-July/158580.html

• [PATCH] AArch64: Improve generic strlen https://sourceware.org/pipermail/libc-alpha/2024-July/158790.html

• [PATCH v4 0/3] linux: Update the mremap C implementation [BZ #31968] https://sourceware.org/pipermail/libc-alpha/2024-July/158548.html

LLVM/Clang/LLDB/LLD

本节内容来自 LLVM Weekly 第 552 期， Alex Bradbury 大哥持续稳定输出。

• 主线现在 20 了： The LLVM 19.x release branch was created and 19.1.0-rc1 was released.

• 新的一届LLVM理事会招募开始了： Tanya Lattner put out a call for applications to serve on the LLVM Foundation Board of Directors.

• 收藏： Slides from the recent LLVM meetup in Munich are now available, with talks on "Life with Opaque Pointers from a Frontend Perspective" by Sebastian Neubauer and "A Wishlist for Faster LLVM Back-Ends" by Alexis Engelke.

• Bug Triage 是很重要的社区工作： Vlad Serebrennikov provided an update on efforts to improve and better label the database of Clang bugs and is asking for help in triaging those labeled clang:to-be-triaged.

• 龙芯加油： 128 and 256-bit vector shuffles were implemented for LoongArch. 464ea88.

• 试试优化效果？ LLD can now use profile guided function ordering, which can reduce page faults during startup. e3b30bc5.

QEMU (RISC-V)

• [PATCH v6 0/8]target/riscv: Expose RV32 cpu to RV64 QEMU, https://lists.gnu.org/archive/html/qemu-riscv/2024-07/msg00371.html

• [PATCH 1/1]target/riscv: Remove redundant insn length check for zama16b, https://lists.gnu.org/archive/html/qemu-riscv/2024-07/msg00407.html

• [PATCH]target/riscv: Add a property to set vl to ceil(AVL/2), https://lists.gnu.org/archive/html/qemu-riscv/2024-07/msg00406.html

• [PATCH v2 01/13]target/riscv: Add properties for Indirect CSR Access extension, https://lists.gnu.org/archive/html/qemu-riscv/2024-07/msg00418.html

• [PATCH-for-9.1]target/riscv: Remove the deprecated 'any' CPU type, https://lists.gnu.org/archive/html/qemu-riscv/2024-07/msg00441.html

• [PATCH v2 00/24]riscv support for control flow integrity extensions, https://lists.gnu.org/archive/html/qemu-riscv/2024-07/msg00529.html

• [PATCH]hw/char/riscv_htif: Fix 64-bit var write order in 32-bit system, https://lists.gnu.org/archive/html/qemu-riscv/2024-07/msg00562.html

RISC-V in China

• RISC-V 中国峰会正在如火如荼的进行中。

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：《爱有差等：先秦儒家与华夏制度文明的构建》

作者： 李竞恒

推荐： 小编1号

上周末朋友赠送的一本书，说觉得挺有意思。本书由一系列短小但并不容易读的文章构成，每篇文章估计10-20分钟可以读完（如果你不计较里面很多不认识的古文摘录的话），而“爱有差等”是本书中第一篇短文。

阅读本书最大的几个感受，一个是如果想要从历史中学习，那么进入的角度和时间尺度很重要。宏观的文明叙事能够让你建立大局观；基于会议、冲突、军事战斗、往事更替的时间表能够帮助建立主体时间线；切入到历史细节的一个时间切面，可以让你看到某一个具体的社会中，除了主体的那一个时间点的事件，周围的1000个同时发生的事件是什么、人与人之间的实际的差别的立场差别是什么。

本书用类似讲故事的方式串起来各个古籍的片段，用于讲述作者的一个又一个小的观察。相信会有很多读者喜欢。

我有必要给出的一个提示是：保持审慎。并不是因为书中作者有错误（我看不出来），而是因为大多数读者并没有如作者深刻的古代论著的阅读量和理解。作者的视角可能已经是经过同行学人交叉辩论过的，而读者有可能只阅读过这一本书，容易形成虽然部分正确但是放在更大的逻辑尺度并不成立的境地。

毕竟，从历史的只言片语中反推因果，本身就是一件需要冒险的历程。