OSDT Weekly 第197期

近期活动

• 4月22日周六下午，深圳，由 RISC-V 中国社区、HelloGCC、HelloLLVM 和泰晓社区组织的meetup活动，正在征集分享内容。欢迎加入。
• 4月21日周五，上海，openEuler Developer Day 2023。
• 4月15日周六，天津及线上，HelloLLVM邱吉博士发起的南盘江计划启动暨第一次交流见面会。

编译社区的八卦信息

• C++ 中文周刊 第108期

GCC

• Arm Neoverse N1指令调度tuning。贡献者Evandro以前在SiFive工作，看起来换到Arm服务器相关公司了 [PATCH] aarch64: Add the cost and scheduling models for Neoverse N1 https://gcc.gnu.org/pipermail/gcc-patches/2023-April/615386.html

• [PATCH 0/3] RISC-V:Enable basic auto-vectorization for RVV https://gcc.gnu.org/pipermail/gcc-patches/2023-April/615330.html

• [PATCH v2 0/8] RISCV: Implement ISA Manual Table A.6 Mappings https://gcc.gnu.org/pipermail/gcc-patches/2023-April/615264.html

• Rust front-end update 2023-04-05 https://gcc.gnu.org/pipermail/gcc-patches/2023-April/615153.html

• [PATCH 0/5] RISC-V: Support ZC* extensions. https://gcc.gnu.org/pipermail/gcc-patches/2023-April/615287.html

• 来自华为俄研的问题 [RFC] arm: atomics: ARMv7 doubleword atomicity https://gcc.gnu.org/pipermail/gcc/2023-April/241112.html

• 讨论得非常深入MIN/MAX and trapping math and NANs https://gcc.gnu.org/pipermail/gcc/2023-April/241120.html

Binutils/GDB

• 主要是寄存器读取支持 [PATCH 00/17] SME support for AArch64 gdb/gdbserver on Linux. https://sourceware.org/pipermail/gdb-patches/2023-April/198758.html

• Andrew孜孜不倦改进GDB Python支持，对GDB嵌入自动化调试脚本贡献巨大 [PATCH 0/5] Disassembler Styling And The Python API https://sourceware.org/pipermail/gdb-patches/2023-April/198572.html

GLIBC

复活节假期，开发活动较少

• [PATCH v3 0/3] RISC-V: ifunced memcpy using new kernel hwprobe interface https://sourceware.org/pipermail/libc-alpha/2023-April/147061.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：

• https://reviews.llvm.org/D147287 添加了用于支持IRPGO Temporal Profiling的intrinsic函数。 相关RFC: https://discourse.llvm.org/t/rfc-temporal-profiling-extension-for-irpgo/68068

本节内容来自 LLVM Weekly 第 484 期， Alex Bradbury 大哥持续稳定输出。

• 庆祝： LLVM 16.0.1 was released.

• 同去同去！ Round table submissions for EuroLLVM 2023 are due on April 15th. Additionally, today (10th April) is the last day for early bird ticket pricing.

• 收藏，看不过来了： Most of the videos from the recent Latch-Up conference organised by the Free and Open Source Silicon Foundation are now up on YouTube, including a number of talks at the intersection of LLVM and open source hardware design.

• 好耶，收藏： Nikita Popv blogged about LLVM's middle-end optimization pipeline.

• 有没有伙伴阅读之后来分享下： Yuta Mukai shared on RFC on a new loop distribution pass for software pipelining, also pointing to a proof of concept implementation on Phabricator.

• 阅读： The RISC-V backend's policy on which revision of specifications are implemented was documented. d7b2003.

• MLIR 现在真的特别火： The IRDL dialect was added to MLIR, allowing users to represent dynamic dialect definitions as an MLIR program. 0e0db0a.

QEMU (RISC-V)

• [PATCH 00/10] accel/kvm: Spring cleaning, https://lists.nongnu.org/archive/html/qemu-riscv/2023-04/msg00095.html

• [PATCH v5] target/riscv: fix H extension TVM trap, https://lists.nongnu.org/archive/html/qemu-riscv/2023-04/msg00164.html

• [PATCH v4 00/20] remove MISA ext_N flags from cpu->cfg, https://lists.nongnu.org/archive/html/qemu-riscv/2023-04/msg00168.html

• [PATCH v3 0/3] target/riscv: Fix mstatus.MPP related support, https://lists.nongnu.org/archive/html/qemu-riscv/2023-04/msg00195.html

• [PATCH v2] target/riscv: Fix Guest Physical Address Translation, https://lists.nongnu.org/archive/html/qemu-riscv/2023-04/msg00206.html

• [PATCH] target/riscv: Use check for relationship between Zdinx/Zhinx{min} and Zfinx, https://lists.nongnu.org/archive/html/qemu-riscv/2023-04/msg00266.html

• [PATCH 0/7] target/riscv: Add support for PC-relative translation, https://lists.nongnu.org/archive/html/qemu-riscv/2023-04/msg00269.html

• [PATCH 0/2] target/riscv: Separate implicitly-enabled and explicitly-enabled extensions, https://lists.nongnu.org/archive/html/qemu-riscv/2023-04/msg00276.html

• [PATCH v3 0/2] Support for print to log vector extension registers, https://lists.nongnu.org/archive/html/qemu-riscv/2023-04/msg00283.html

• [RFC PATCH 0/4] Smstateen FCSR implementation, https://lists.nongnu.org/archive/html/qemu-riscv/2023-04/msg00290.html

• [PATCH v2 00/54] tcg: Simplify calls to load/store helpers, https://lists.nongnu.org/archive/html/qemu-riscv/2023-04/msg00306.html

• [PATCH] target/riscv: Restore the predicate() NULL check behavior, https://lists.nongnu.org/archive/html/qemu-riscv/2023-04/msg00400.html

• [PATCH v3 0/3] target/riscv: implement query-cpu-definitions, https://lists.nongnu.org/archive/html/qemu-riscv/2023-04/msg00410.html

• [RFC 0/5] target/riscv: Add support for BF16 extensions, https://lists.nongnu.org/archive/html/qemu-riscv/2023-04/msg00423.html

• [PATCH] target/riscv: Update check for Zca/zcf/zcd, https://lists.nongnu.org/archive/html/qemu-riscv/2023-04/msg00432.html

RISC-V in China

最近 RISC-V 的新闻非常多

• 全体起立！64核 RISC-V 开发平台 Milk-V Pioneer 要来了！
• 中国RISC-V产业联盟西安交流会
• RISC-V 中开发 Java 是一种什么体验？ 让 Dragonwell JDK 来回答
• 观点 - by David Patterson: 关于RISC-V的十大谬误

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：《地下室手记》

作者： 陀思妥耶夫斯基

译者： 曾思艺

推荐： 小编1号

大师转型名作，看不懂是正常的。我就没看懂。欢迎看过的伙伴留言评论自己的读后感。

我感觉跟三岛由纪夫的《金阁寺》里面是不一样的变态，但是都很细腻真实，剖析到看着看着就像是被附身了一样，觉得自己如果有类似的想法的话也是一件很自然的事情。

所以得在有太阳的时候看。