OSDT Weekly 第355期

近期活动预告

编译社区的八卦信息

GCC

• [PATCH v3] match.pd: right shift compare canonicalization [PR124808] https://gcc.gnu.org/pipermail/gcc-patches/2026-April/713064.html

• [Patch] nvptx: support -march=native with offloading https://gcc.gnu.org/pipermail/gcc-patches/2026-April/713084.html

• [PATCH] riscv: Allow Zcmp push/pop when shrink-wrap-separate is inactive https://gcc.gnu.org/pipermail/gcc-patches/2026-April/713111.html

• [PATCH] arm, bitint: Add support for FP_HANDLE_EXCEPTIONS and FP_ROUNDMODE with hard float abi https://gcc.gnu.org/pipermail/gcc-patches/2026-April/713124.html

• [PATCH 00/30] Align struct/class forward declaration with implementation https://gcc.gnu.org/pipermail/gcc-patches/2026-April/713167.html

• GCC 17.0 PowerPC patches https://gcc.gnu.org/pipermail/gcc-patches/2026-April/713343.html

• [PATCH v1 0/3] libstdc++: Implement C++23 <flat_map> and <flat_set> https://gcc.gnu.org/pipermail/gcc-patches/2026-April/713561.html

• [PATCH v1 0/11] C++26 [simd] https://gcc.gnu.org/pipermail/gcc-patches/2026-April/714280.html

BINUTILS

• RFC: Annotate immediates in x86 disassembly https://sourceware.org/pipermail/binutils/2026-April/149056.html

• [PATCH 00/19] RISC-V: assorted fixes and (hopefully) improvements https://sourceware.org/pipermail/binutils/2026-April/149020.html

• [RFC] Add GNU_PROPERTY_1_NEEDED_THP_ON_[READ_ONLY_SEGMENTS|MALLOC] https://sourceware.org/pipermail/binutils/2026-April/148988.html

GDB

• [PATCH] misc: Optimize getusershell.c https://sourceware.org/pipermail/libc-alpha/2026-April/176820.html

• [PATCH 0/4] gdb/aarch64: record/replay support for AArch64 https://sourceware.org/pipermail/gdb-patches/2026-April/226671.html

• [PATCH v3 0/7] Remove addrmap from blockvector https://sourceware.org/pipermail/gdb-patches/2026-April/226703.html

GLIBC

• [PATCH] aarch64: simplify __libc_arm_za_disable failure path https://sourceware.org/pipermail/libc-alpha/2026-April/176867.html

• Request for feedback on WG14 proposal N3849 (alloc_at_least) https://sourceware.org/pipermail/libc-alpha/2026-April/176919.html

LLVM/Clang/LLDB/LLD

本节内容来自 LLVM Weekly 第 642 期， Alex Bradbury 大哥持续稳定输出。

• 宝藏！ A number of EuroLLVM round table summaries are appearing (thank you to those taking and posting notes!). Posts were made for pointer arithmetic, LLVM libc, debugger / debug info (with illustrations!), full restrict / ptr provenance / alias analysis, MLIR canonicalisation, MLIR lighthouse, EmitC, early exit from MLIR regions.

• 有意思： Yaxun (Sam) Liu proposed infrastructure to record LLVM IR snapshots in an SQlite database.

• 我有个想法是围绕 LLVM libc 做一个 Linux 发行版： Jeff Bailey is looking to support coverage in LLVM's libc.

• 要来了么： Bruno Cardoso Lopes provided an update on the status of ClangIR upstreaming with updated figures for how much of the test-suite compiles and runs and a listing of prioritised blocking issues.

• 我都没注意到 libc 有个网站了： Jeff Bailey is seeking feedback on re-organising the LLVM libc website.

• 管用么？ Momchil Velikov started an RFC thread on doing vectorisation only at LTO time when using LTO.

QEMU

• [PATCH 00/14] target/riscv: add support for RISC-V P extension (v0.20 draft) https://lore.kernel.org/qemu-devel/20260417104652.17857-1-xiaoou@iscas.ac.cn/

• [PATCH v6 0/5] Add support for K230 board https://lore.kernel.org/qemu-devel/cover.1776438369.git.chao.liu.zevorn@gmail.com/

• [PATCH v10 0/2] Generate strided vector loads/stores with tcg nodes https://lore.kernel.org/qemu-devel/cover.1776437127.git.chao.liu.zevorn@gmail.com/

• [PATCH v3 00/13] hw/riscv: Add the Tenstorrent Atlantis machine https://lore.kernel.org/qemu-devel/20260421053140.752059-1-joel@jms.id.au/

• [PATCH v4 0/6] Fix Zjpm implementation https://lore.kernel.org/qemu-devel/20260421093715.2995067-1-frank.chang@sifive.com/

• [PATCH v2 0/5] Defer the IOMMU translation and support access_type https://lore.kernel.org/qemu-devel/20260421162912.3295598-1-jim.shu@sifive.com/

• [PATCH 00/37] target/arm: Implement FEAT_FAMINMAX, FEAT_FPMR, FEAT_FP8 https://lore.kernel.org/qemu-devel/20260421051346.41106-1-richard.henderson@linaro.org/

• [PATCH v3 0/4] FEAT_RME_GDI initial work https://lore.kernel.org/qemu-devel/20260421-jmac-feat_rme_gdi-v3-0-ecd20c77eae1@linaro.org/

• [PATCH 00/34] Add migration support to the MSHV accelerator https://lore.kernel.org/qemu-devel/20260417105618.3621-1-magnuskulke@linux.microsoft.com/

• [PATCH v2 00/38] WHPX x86 updates for QEMU 11.1 https://lore.kernel.org/qemu-devel/20260420104248.86702-1-mohamed@unpredictable.fr/

• [PATCH 0/8] hw/nvme: add basic live migration support https://lore.kernel.org/qemu-devel/20260419130139.15554-1-alexander@mihalicyn.com/

• [PATCH v4 00/21] Add SSP/TSP power control and DRAM remap support for AST2700 https://lore.kernel.org/qemu-devel/20260417032837.2664122-1-jamin_lin@aspeedtech.com/

• [PATCH v2 00/13] target/mips: add missing Octeon user-mode support https://lore.kernel.org/qemu-devel/20260421-mips-octeon-missing-insns-v2-v2-0-a0791df188c9@gmail.com/

• [PATCH v15 0/8] virtio-net: live-TAP local migration https://lore.kernel.org/qemu-devel/20260420193846.675844-1-vsementsov@yandex-team.ru/

RISC-V in China

• https://ruyisdk.cn 每日八卦都在这里了。

RT-Thread 社区

• 风平浪静。招募小编！

AI Compilers

• 风平浪静。招募小编！

本周工具链岗位

往期社招及实习生招聘长期有效。

• 知名芯片公司诚招AI基础软件专家
• Nvidia在北京办公室新开放了一个AI负责人岗位。点击这里查看
• 京东开放JavaScript引擎开发岗位，参与京东JS引擎能力建设

本周推荐阅读

本周推荐：《我们为什么要睡觉》

作者：马修·沃克

译者：田盈春

推荐：小编1号

强烈建议所有朋友阅读。睡眠对于我们身体的健康不仅是重要的，而且是奠基性的。就像是金字塔一样，如果睡眠不足，那么运动就有可能从对身体有好处变成有坏处。

近期中文互联网上有传播说午睡一小时然后各种猝死概率增加，这个说法已经被辟谣了，是在特殊的前提下才有的统计学差异。保持7小时左右长睡眠、并且在白天午饭后保持20-30分钟的午睡，对身体有很大的好处。

本书中隔几页就能发现很多神奇的研究发现，虽然可能没什么用，但是很好玩。