OSDT Weekly 第184期 · OSDT Weekly

很高兴的通知大家，OSDT工作组已经全员度过了新冠的冲击，期待2023年的相聚。在一个月前发起的投票已经完成统计，将在本周公布最终的10个城市的线下聚会的计划。

编译社区的八卦信息

同学们努力参加吧 GCC GSoC 2023: Call for project ideas and mentors https://gcc.gnu.org/pipermail/gcc/2023-January/240495.html
More znver4 x86-tune flags https://gcc.gnu.org/pipermail/gcc-patches/2023-January/609619.html
JuZhe 发出一系列RISC-V后端cleanup [PATCH] RISC-V: Add probability model of each block to prevent endless loop of Phase 3 https://gcc.gnu.org/pipermail/gcc-patches/2023-January/609607.html
之前一直不work吗？[Committed] IBM zSystems: Make -fcall-saved-... work. https://gcc.gnu.org/pipermail/gcc-patches/2023-January/609624.html
[wwwdocs] Document libstdc++ additions for GCC 12 and 13 https://gcc.gnu.org/pipermail/gcc-patches/2023-January/609497.html
CodeSourcey最近对OpenMP的贡献都在里面，感兴趣可以看看，很好的汇总 OpenMP Patch Ping https://gcc.gnu.org/pipermail/gcc-patches/2023-January/609638.html

LoongArch关于IFUNC的Fix [PATCH] LoongArch: ld: Fix hidden ifunc symbol linker error bug. https://sourceware.org/pipermail/binutils/2023-January/125565.html
[PATCH] RISC-V: fix JAL aliases ordering in opcode table https://sourceware.org/pipermail/binutils/2023-January/125450.html
关注的同学可以看看最新的进展 A GNU Binutils wiki https://sourceware.org/pipermail/binutils/2023-January/125402.html
armv8.3的指针加密用得越来越多了 [PATCH] [AArch64] Enable pointer authentication support for aarch64 bare metal/kernel mode addresses https://sourceware.org/pipermail/gdb-patches/2023-January/195337.html

Refactor，跟性能没啥关系 [PATCH v6 00/17] Improve generic string routines https://sourceware.org/pipermail/libc-alpha/2023-January/144581.html
讨论进行中 Adding V-ext regs to signal context w/o expanding kernel struct sigcontext to avoid glibc ABI break https://sourceware.org/pipermail/libc-alpha/2023-January/144482.html

本节内容来自 LLVM Weekly 第 471 期， Alex Bradbury 大哥持续稳定输出。

龙芯加油： Lu Weining proposed promoting the LoongArch backend from experimental to official.
新博客文章（不用翻墙就能看了）： The LLVM blog features a post summarising the outcomes of six internships related to interactive (e.g. JITted) C++ development.
这是个大改动？ Kai Nacke posted an RFC on replacing the current GlobalISel matcher with a bottom-up matcher.
John McIver started an RFC discussion on altering the uninitialised memory semantics for the load instruction.
Hmm…… 你怎么看？ Zixu Wang suggested separating the LLVM vim utilities into a separate repo.
有小伙伴感兴趣在看么？ Reid Tatge provided an update to work on MDL, the micro-architecture description language for LLVM.
默认行为变更： The ConstraintElim pass was enabled by default. fb13dcf.
默认行为变更： clang no longer emits the "frame-pointer"="none" attribute, as it is the default behaviour. ce6ae0b.
这么快就完成了： TBAA metadata is now supported in the MLIR LLVMIR dialect. 2f66c89.
试试？ A recipe was documented for doing a full standalone cross-build of libc. 36de85f.

[PATCH 00/20] hw: Remove implicit sysbus_mmio_map() from pflash APIs, https://lists.gnu.org/archive/html/qemu-riscv/2023-01/msg00013.html
[PATCH v2 00/21] gdbstub: re-organise to for better compilation behaviour, https://lists.gnu.org/archive/html/qemu-riscv/2023-01/msg00039.html
[PATCH v4 00/36] tcg: Support for Int128 with helpers, https://lists.gnu.org/archive/html/qemu-riscv/2023-01/msg00075.html
[PATCH] target/riscv: Use TARGET_FMT_lx for env->mhartid, https://lists.gnu.org/archive/html/qemu-riscv/2023-01/msg00121.html
[PATCH 0/2] target/riscv/cpu: fix sifive_u 32/64bits boot in riscv-to-apply.next, https://lists.gnu.org/archive/html/qemu-riscv/2023-01/msg00131.html

往期社招及实习生招聘长期有效。

本周推荐：《影响美国历史的商业七巨头》

作者: [美]理查德·S.泰德罗

译者: 梅丽霞 / 笪鸿安 / 吕莉