OSDT Weekly 第182期 · OSDT Weekly

编译社区的八卦信息

PLCT实验室贡献ILP32支持。对于RV这种高适配，场景覆盖复杂的ISA，ILP32的支持能提高更大的适配性 [RFC v2] Support RV64-ILP32 https://gcc.gnu.org/pipermail/gcc-patches/2022-December/609213.html
即使memset的长度参数不是常量也能Inline [RFC] Introduce -finline-memset-loops https://gcc.gnu.org/pipermail/gcc-patches/2022-December/609138.html
讨论得挺深入的 [PATCH V2] Disable sched1 in functions that call setjmp https://gcc.gnu.org/pipermail/gcc-patches/2022-December/608962.html
Document how to build PGO-optimized GCC version https://gcc.gnu.org/pipermail/gcc/2022-December/240430.html
[00/13] check hash table counts https://gcc.gnu.org/pipermail/gcc-patches/2022-December/609137.html （Alexandre从redhat换到Adacore之后贡献明显更活跃了）
[PATCH v6 00/11] OpenMP: C/C++ lvalue parsing, C/C++/Fortran "declare mapper" support https://gcc.gnu.org/pipermail/gcc-patches/2022-December/609031.html

RISCV kernel struct sigcontext expansion for V regs and potential glibc ABI break https://sourceware.org/pipermail/libc-alpha/2022-December/143921.html （对于kernel space和userspace之间ABI的任何改动，讨论都很激烈）
String截断拷贝优化版本 [PATCH 0/1] string: Add stpecpy(3) https://sourceware.org/pipermail/libc-alpha/2022-December/144275.html
C2x (C语言近几年的新更新）scanf binary constant handling https://sourceware.org/pipermail/libc-alpha/2022-December/144250.html （Patch的cover letter写得很详细，感兴趣的同学可以仔细阅读）
[PATCH v2 0/4] Remove --with-default-link option https://sourceware.org/pipermail/libc-alpha/2022-December/144259.html

本节内容来自 LLVM Weekly 第 469 期， Alex Bradbury 大哥持续稳定输出。

或许下次meetup能用上： Nikita Popov authored blog posts about how to contribute to LLVM and LLVM in 2022.
收藏： A few more videos from the 2022 LLVM Developers' Meeting have made their way online.
聚会： A number of meetups have been scheduled for January. The next LLVM Bay Area meetup will take place on Mon Jan 23rd, there'll be one in Darmstadt on January 25th, and one in Munich on January 20th.
2月下旬： A call for participation has been published for the 1st Enzyme Workshop, to be held on Feb 22nd-24th.
An implementation of uniformity analysis for irreducible control flow was implemented (alongside documentation). 475ce4c.
TargetParsers were moved from llvm/Support to a new component. f09cf34.
Target extension types were added to LLVM IR. e6b0221.
A helper script was added to automate teh use of relative line numbers in lit tests. cf9b25e.
Ventanda风头正劲： Code generation support was added for the RISC-V XVentandaCondOps extension. 6a907a4.
RISC-V势如破竹： A new RISC-V pass was added to convert ADDIW and SLLIW to ADDI and SLLI when possible, increasing opportunities for instructions compression. d64d3c5.
注意： Function specialisation was enabled by default for all optimisation levels other than Os and Oz. 2656572.

往期社招及实习生招聘长期有效。

本周推荐：《如何预防下一次大流行》

作者：比尔·盖茨