OSDT Weekly 第196期

近期活动

• 报名｜openEuler Compiler & Embedded Meetup 杭州站来啦

编译社区的八卦信息

• C++ 中文周刊 第107期

GCC

欧洲进入复活节假期，社区不太活跃

• [GCC14 PATCH] LoongArch: Optimize additions with immediates https://gcc.gnu.org/pipermail/gcc-patches/2023-April/615014.html

• [PATCH 0/2] Support Intel AMX-COMPLEX https://gcc.gnu.org/pipermail/gcc-patches/2023-April/615045.html

• IBM仍然对PowerPC的工具链支持保持投入 [PATCH] ree: Improvement of ree pass for rs6000 target. https://gcc.gnu.org/pipermail/gcc-patches/2023-April/615095.html

• 感兴趣的童鞋可以跟踪阅读最新的讨论 Should -ffp-contract=off the default on GCC? https://gcc.gnu.org/pipermail/gcc-patches/2023-March/614979.html

Binutils/GDB

• AArch64 SME2汇编和链接支持。 [PATCH 00/43] aarch64: Groundwork for SME2 support https://sourceware.org/pipermail/binutils/2023-March/126841.html

  [PATCH 00/31] aarch64: Add SME2 support https://sourceware.org/pipermail/binutils/2023-March/126888.html

• [RFC PATCH v4 0/2] RISC-V: Add support for the Zfa extension https://sourceware.org/pipermail/binutils/2023-March/126921.html

• [PATCH 0/3] Add support for MIPS Allegrex https://sourceware.org/pipermail/binutils/2023-March/126813.html

• [PATCH 0/7] amdgpu: handle fork and exec https://sourceware.org/pipermail/gdb-patches/2023-April/198560.html

GLIBC

• [PATCH v2 0/3] RISC-V: ifunced memcpy using new kernel hwprobe interface https://sourceware.org/pipermail/libc-alpha/2023-March/146823.html

• [PATCH v10 0/12] implement dlmem() function https://sourceware.org/pipermail/libc-alpha/2023-April/146866.html

• clone() and Glibc https://sourceware.org/pipermail/libc-alpha/2023-March/146786.html

LLVM/Clang/LLDB/LLD

以下值得关注的内容来自小编9号的整理和推荐：

• 本期清明假期跳过1次

本节内容来自 LLVM Weekly 第 483 期， Alex Bradbury 大哥持续稳定输出。

• 国内陆旭凡在做 RISC-V JITLink： Kshitij Jain has an article on the LLVM blog about adding a new target/object backend to LLVM JITLink (in this case, 32-bit x86).

• 有没有同去的，一起啊！ Early bird registration for EuroLLVM 2023 ends in one week's time, on April 10th.

• 诶，能打？ Katy Romanova polled for interest in an RFC on 'distributed ThinLTO' and then followed up with the RFC.

• MaskRay： There was further discussion about the overhead from threading in LLD by default with Fangrui Song noting that --thread=8 often gives peak performance on x86_64. Mateusz Guzik aragues this further supports the need for different defaults.

• 方便： The RISC-V backend now supports .insn with compressed instruction formats. 941667b.

• 支持速度很快： The RISC-V backend gained support (assembler/disassembler and codegen) for the experimental zicond extension. d3291c6, a755e80.

QEMU (RISC-V)

• [PATCH] target/riscv: Fix addr type for get_physical_address, https://lists.gnu.org/archive/html/qemu-riscv/2023-03/msg00832.html

• [PATCH v3 00/20] remove MISA ext_N flags from cpu->cfg, https://lists.gnu.org/archive/html/qemu-riscv/2023-03/msg00838.html

• [PATCH v6 0/9] target/riscv: rework CPU extensions validation, https://lists.gnu.org/archive/html/qemu-riscv/2023-03/msg00859.html

• [PATCH] target/riscv: Set opcode to env->bins for illegal/virtual instruction fault, https://lists.gnu.org/archive/html/qemu-riscv/2023-03/msg00874.html

• [PATCH 0/2] target/riscv: Fix mstatus.MPP related support, https://lists.gnu.org/archive/html/qemu-riscv/2023-03/msg00878.html

• [RFC PATCH v2] riscv: Add support for the Zfa extension, https://lists.gnu.org/archive/html/qemu-riscv/2023-03/msg00901.html

• [PATCH v6 0/6] target/riscv: Fix pointer mask related support, https://lists.gnu.org/archive/html/qemu-riscv/2023-04/msg00024.html

• [PATCH] target/riscv: fix invalid riscv,event-to-mhpmcounters entry, https://lists.gnu.org/archive/html/qemu-riscv/2023-04/msg00052.html

• [PATCH v3 0/4] target/riscv: Simplification for RVH related check and code style fix, https://lists.gnu.org/archive/html/qemu-riscv/2023-04/msg00087.html

• [PATCH v4 0/1] hw/riscv: Add ACT related support, https://lists.gnu.org/archive/html/qemu-riscv/2023-04/msg00094.html

RISC-V in China

• 风平浪静。

RT-Thread 社区

• 风平浪静。

TVM / AI Compilers

• 风平浪静。

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：《历史学是什么》

作者： 葛剑雄

推荐： 小编1号

历史学学者很用心写的面相初学者和一般读者的科普读物。非常好。尤其是在这个虚无主义很流行的时代，掌握一些良好的方法论是非常重要的事情。