OSDT Weekly 第210期

近期活动

编译社区的八卦信息

• C++ 中文周刊 第 121 期

GCC

• [RFC] Bridging the gap between the Linux Kernel Memory Consistency Model (LKMM) and C11/C++11 atomics https://gcc.gnu.org/pipermail/gcc/2023-July/241966.html 对Memory Consistency Model感兴趣的同学可以跟踪一下这个讨论

• [PATCH] RISC-V: Optimize permutation codegen with vcompress https://gcc.gnu.org/pipermail/gcc-patches/2023-July/624055.html

• [PATCH v1] RISC-V: Fix one bug for floating-point static frm https://gcc.gnu.org/pipermail/gcc-patches/2023-July/623529.html

• [x86-64] RFC: Add nosse abi attribute https://gcc.gnu.org/pipermail/gcc-patches/2023-July/624004.html

• 希望尽快使能！[PATCH] ci: Add a linux CI https://gcc.gnu.org/pipermail/gcc-patches/2023-July/623939.html

• [PATCH V5] RISC-V: Support gather_load/scatter RVV auto-vectorization https://gcc.gnu.org/pipermail/gcc-patches/2023-July/623871.html

Binutils/GDB

• [PATCH v2] RISC-V: Support Zca/f/d extensions. https://sourceware.org/pipermail/binutils/2023-July/128340.html

• [committed] arc: Update/Add ARCv3 support. https://sourceware.org/pipermail/binutils/2023-July/128321.html

• [PATCH] [aarch64] SME: Core file support 调试器SME支持更进一步 https://sourceware.org/pipermail/binutils/2023-July/128313.html

• [PATCH] [RISC-V] Fix the valid gp range for gp relax. https://sourceware.org/pipermail/binutils/2023-July/128285.html

• [RFC] Deprecate stabs （看起来GDB15会最终移除掉） https://sourceware.org/pipermail/gdb-patches/2023-July/200709.html

GLIBC

• [PATCH v4 0/6] Use introsort for qsort https://sourceware.org/pipermail/libc-alpha/2023-July/149967.html

• [PATCH v2 0/4] Add clone3 support for multiple architectures https://sourceware.org/pipermail/libc-alpha/2023-July/149899.html

• [PATCH v2 00/32] RELRO link maps https://sourceware.org/pipermail/libc-alpha/2023-July/149815.html

• [PATCH v4 0/3] RISC-V: ifunced memcpy using new kernel hwprobe interface https://sourceware.org/pipermail/libc-alpha/2023-July/149775.html

• [PATCH] Initial Granite Rapids D Support https://gcc.gnu.org/pipermail/gcc-patches/2023-July/623731.html

LLVM/Clang/LLDB/LLD

本节内容来自 LLVM Weekly 第 497 期， Alex Bradbury 大哥持续稳定输出。

• 收藏！ Videos from EuroLLVM 2023 have started to be posted. Additionally, the video from my LLVM-focused invited keynote at the RISC-V Summit Europe is also now available.

• LLVM 17 要来了： Tobias Hieta shared the planned timeline for the LLVM 17.0.0 release. The branch is due to take place on July 25th, with rc1 arriving on July 27th.

• 很热闹： Aaron Ballman started a thread about links in code and commit messages, especially e.g. rdar:// links which aren't publicly accessible. Tentative consensus was reached on disallowing such links in code, but allowing them in commit messages.

• 大家支持呀！ Yuhao Gu is seeking feedback on design choices for hierarchical HTML report page generation in llvm-cov.

• MLIR 最近实在是太火了： MLIR News #50 is out.

• Rust 最近也是太火了： Vaivaswatha Nagaraj shared pliron, an MLIR inspired compiler IR framework written in Rust.

• 有没有伙伴感兴趣的？ The unified LTO bitcode frontend as described in a previous RFC was committed. a1ca3af.

• 不容易： Work to simplify the RISC-V vector pseudoinstructions continues. 403261e.

• 又一个浮点格式？ TF32 (TensorFloat32) was added as a builtin float type to MLIR. 6685fd8.

QEMU (RISC-V)

• [PATCH v2] riscv: Generate devicetree only after machine initialization is complete, https://lists.gnu.org/archive/html/qemu-riscv/2023-07/msg00162.html

• [PATCH v9 00/20] target/riscv, KVM: fixes and enhancements, https://lists.gnu.org/archive/html/qemu-riscv/2023-07/msg00167.html

• [PATCH] target/riscv: Fix LMUL check to use minimum SEW, https://lists.gnu.org/archive/html/qemu-riscv/2023-07/msg00188.html

• [PATCH v3 0/2] target/riscv: improve code accuracy and, https://lists.gnu.org/archive/html/qemu-riscv/2023-07/msg00208.html

• [PATCH v8] riscv: Add support for the Zfa extension, https://lists.gnu.org/archive/html/qemu-riscv/2023-07/msg00245.html

• [PATCH v3 0/1] target/riscv: Add Zihintntl extension ISA string to DTS, https://lists.gnu.org/archive/html/qemu-riscv/2023-07/msg00264.html

• [PATCH-for-8.2 v3 00/16] target/riscv: Allow building without TCG (KVM-only so far), https://lists.gnu.org/archive/html/qemu-riscv/2023-07/msg00268.html

• [PATCH v3 01/16] target/riscv: Remove unuseful KVM stubs, https://lists.gnu.org/archive/html/qemu-riscv/2023-07/msg00269.html

• [PATCH v8 00/15] Add RISC-V vector cryptographic instruction set support, https://lists.gnu.org/archive/html/qemu-riscv/2023-07/msg00289.html

RISC-V in China

• 2023 RISC-V 中国峰会正在紧锣密鼓的筹备中。
• 本周四上午10点， RISC-V Open Hours 欢迎参加。

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：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：《为什么伟大不能被计划》

作者: [美] 肯尼斯·斯坦利 / [美] 乔尔·雷曼

译者: 彭相珍

推荐：小编1号

有时候一个好的书名就会吸引读者拿起来并买下这本书。

这本2023年5月出版、接近300页的书来自于做人工智能的两位研究人员。书中并没有晦涩的公式推导，主打以叙事（讲故事）来进行道理的说明。针对书名的问题，作者给出了一个看起来并不是最终答案的观察性结论：对于大型复杂任务，本质上可以看成是搜索。而搜索的策略上不能太约束于人工设定的目标，而是应该以复杂度和新奇度的增加作为依据。

从小编的角度来看，这实质上是对度量制定者给出的度量的准确度进行了观察评论，并指出需要考虑度量指标的不完善甚至和实际目的的背道而驰。而复杂度度量的引入则在实验上很好的改善了这一点，并使得作者在 OpenAI 做出了一些有意思的实验结果。

道理可能没错，行文是真的啰嗦。