OSDT Weekly 2024-02-21 第242期

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近期活动

本周六上午11点：《解读和讨论：RISE基金会新发布 RISC-V Optimization Guide》活动欢迎大家参加。由 PLCT实验室技术总监、RISC-V Ambassador 邱吉博士主持，PLCT实验室陈逸轩工程师辅助主持。‍‍‍‍‍‍‍‍‍‍‍‍

会议号: 846 0384 8592

密码: 461288

编译社区的八卦信息

GCC

[PATCH] doc: RISC-V: Document that -mcpu doesn't override -march or -mtune
https://gcc.gnu.org/pipermail/gcc-patches/2024-February/646070.html
IBM持续投资PowerPC (RS6000)架构
rs6000, built-in cleanup patch series
https://gcc.gnu.org/pipermail/gcc-patches/2024-February/646074.html
bpf: PR target/113453 func_info .BTF.ext implementation
https://gcc.gnu.org/pipermail/gcc-patches/2024-February/646045.html
[PATCH] RISC-V: Fix CTZ unnecessary sign extension [PR #106888]
https://gcc.gnu.org/pipermail/gcc-patches/2024-February/646018.html
[PATCH] rtl-optimization/54052 - RTL SSA PHI insertion compile-time hog
https://gcc.gnu.org/pipermail/gcc-patches/2024-February/645933.html
[PATCH v6 0/5]New attribute "counted_by" to annotate bounds for C99 FAM(PR108896)
https://gcc.gnu.org/pipermail/gcc-patches/2024-February/645838.html
GCN RDNA2+ vs. GCC SLP vectorizer
https://gcc.gnu.org/pipermail/gcc-patches/2024-February/645785.html
[PATCH] Turn on LRA on all targets
https://gcc.gnu.org/pipermail/gcc-patches/2024-February/645753.html

Binutils/GDB

[PATCH v4 0/9] RISC-V: Implement TLS Descriptors
https://sourceware.org/pipermail/binutils/2024-February/132554.html
[PATCH] LoongArch: Modify inconsistent behavior of ld with --unresolved-symbols=ignore-all
https://sourceware.org/pipermail/binutils/2024-February/132539.html
[PATCH 0/4] x86/APX: misc adjustments
https://sourceware.org/pipermail/binutils/2024-February/132491.html
[PATCH 00/14] s390: Enhancements to working with addressing operands
https://sourceware.org/pipermail/binutils/2024-February/132481.html

GLIBC

[PATCH v2 0/3] Improve wcsstr
https://sourceware.org/pipermail/libc-alpha/2024-February/154875.html
[PATCH] x86_64: Exclude SSE, AVX and FMA4 variants in libm multiarch
https://sourceware.org/pipermail/libc-alpha/2024-February/154847.html
[PATCH v12 0/7] RISC-V: ifunced memcpy using new kernel hwprobe interface
https://sourceware.org/pipermail/libc-alpha/2024-February/154644.html

LLVM/Clang/LLDB/LLD

本节内容来自 LLVM Weekly 第 529 期，Alex Bradbury 大哥持续稳定输出。

征稿：The call for presentations for the MLIR Workshop at the EuroLLVM Developer Meeting is now up. The workshop will take place on April 9th.
新书：The book Learn LLVM 17, Second Edition by Kai Nacke and Amy Kwan is now available.
MLIR真是要承载一切：Jeff Niu kicked off an RFC discussion on adding a new region-based control-flow paradigm to MLIR which would enable early exits through operations like break or continue. This generated a lot of feedback (largely positive), and triggered a discussion about the suitability of MLIR for representing ASTs.
同学们可以提前开始看看了：There were a number of new GSoC 2024 project ideas shared. Rather than risk me missing some, you're best looking at the gsoc2024 tag on Discourse.
情人节发布：MLIR News #62 is out.
效果好么？Sriraman Tallam posted an RFC on interprocedural identical basic block folding.
下载收藏：The slides and recording from the last open MLIR meeting on OpenMP GPU target offloading infrastructure is now available.
128字节的整数：Jan Schultke is seeking feedback on a C++ proposal to standardise 128-bit integers.
国内的伙伴？Haojian Wu is seeking advice on providing a non-UB way of creating objects wih vptrs via memcpy, noting this can lead to a 10% improvement on protobuf benchmarks.
恭喜香山社区的小伙伴！A scheduling model was added for the open source XianShan-NanHu RISC-V processor. 373d9d7.
恭喜国内的小伙伴：Codegen support for the experimental RISC-V Zabha extension was added. a300a1a.
日积跬步：A canonicalised RISC-V ISA string will now be added as module metadata for RISC-V. This is a step to working around some issues with LTO builds. f45b9d9.
MPI也有了：Initial work on an MPI dialect was added to MLIR. b334664.
稳：LLVM's libc started to gain documentation on C23 support. 58946ee.