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东亚时区RISC-V双周会

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发表于 2022-4-15 11:35:01 | 显示全部楼层 |阅读模式
东亚时区RISC-V双周会
2022年04月14日·第033次
https://github.com/cnrv/RISCV-East-Asia-Biweekly-Sync
Host: Ji Qiu qiuji@iscas.ac.cn
Organizer: PLCT Lab wuwei2016@iscas.ac.cn
相关具体内容如下:
AOSP for RISC-V - 汪辰、陆旭凡
● Sync aosp-riscv to RVI upstream:
○ [fixed cmake issue and code cleanup](https://github.com/riscv-android ... xternal-qemu/pull/3)
● Sync aosp-riscv from RVI upstream:
○ N/A
● aosp-riscv development
○ [Updated emulator integration branch](https://gitee.com/aosp-riscv/working-group/pulls/28)
○ [added prebuilt gdb](https://gitee.com/aosp-riscv/test-riscv/pulls/16)
○ [use gdb built for 18.04](https://gitee.com/aosp-riscv/test-riscv/pulls/17)
● Articles:
○ [added article gdb android emulator](https://gitee.com/aosp-riscv/working-group/pulls/29), [GDB 调试
Android 模拟器](https://zhuanlan.zhihu.com/p/497296691)
○ [added article run qemu 2.12.0](https://gitee.com/aosp-riscv/working-group/pulls/27), [尝试运行第一个支
持 RISC-V 的 QEMU 版本(v2.12.0)](https://zhuanlan.zhihu.com/p/493669179)
○ [added article to introduce how ndk is built](https://gitee.com/aosp-riscv/working-group/pulls/26), [Android
NDK 的构建分析](https://zhuanlan.zhihu.com/p/492330971)RISC-V GCC进展
ZC扩展的开发工作目前已基本结束,等待CORE-V rebase/review完成后进入测试维护阶段:
https://docs.google.com/presenta ... .g123a3aaa6df_0_157
CMO扩展指令实现时发现binutils支持与spec定义有冲突,正在issue中讨论(我们目前支持了两个版本 )
https://github.com/yulong-plct/riscv-gcc/tree/cmodev-upstream
https://github.com/riscv/riscv-CMOs/issues/47
Waterman建议等待RVWMO确定后再进行ZTSO支持,目前进入block状态
Liaoshihua/riscv-binutils-gdb at ztso (github.com)
Kito发布了psABI的新release,EABI部分仍在等待新的 进展:
https://github.com/riscv-non-isa ... leases/tag/v1.0-rc2
RISCV-GNU-Toolchain双周会slides链接:
RISC-V GNU Toolchain Biweely sync-up 04-07Clang/LLVM 进展 (PLCT)
1. Gollvm,我们的目的是添加riscv的支持,现在修了一些公共的部分
a. 已经被合并的patch:
i. 修复gollvm里Distro.cpp对Arch Linux的检测:https://go-review.googlesource.com/c/gollvm/+/399317
ii. gollvm能在link的时候为Arch加上/usr/lib或者/usr/lib32目录
https://go-review.googlesource.com/c/gollvm/+/399876
b. 新的在review中的patch:
i. https://go-review.googlesource.com/c/gollvm/+/399316
2. LLVM upstream
a. 已经被合并patch:
i. 给stepvector.intrinsic添加代价模型,代价不是最好的,可以解决crash的问题:https://reviews.llvm.org/D122782
ii. B扩展的clz intrinsic支持,https://reviews.llvm.org/D121915
iii. 一个大体量的NFC, [NFC][CodeGen] Use ArrayRef in TargetLowering functions:
https://reviews.llvm.org/D123467
b. 新的在review中的patch:
i. 部分zfinx的codegen支持: https://reviews.llvm.org/D122918Clang / LLVM 社区的更新 (廖春玉、陆旭凡)
1. D123515 Support “.option arch” directive
2. D122543. [ORC] add lazy jit support for riscv64
3. D123679 [RISCV] Don't getDebugLoc for the end node of MBB iterator
4. D123579 [RISCV][VP] Add RVV codegen for vp.trunc.
5. D118026 [RISCV] Improve the condition of hasRVVFrameObject.QEMU/Spike 中 K / Zce / Zfinx /全家桶 进展 (PLCT)
● QEMU K 扩展支持暂无更新
● Zce支持更新到v0.70.3
https://github.com/plctlab/plct-qemu/tree/plct-zce-0.70.0
https://github.com/plctlab/plct-spike/tree/plct-zce-dev-0.70.0
https://github.com/riscv-software-src/riscv-isa-sim/pull/975
● Spike Zfinx支持依旧在review当中
https://github.com/riscv-software-src/riscv-isa-sim/pull/831V8 for RISC-V 更新(邱吉、陆亚涵)
● Upstream Update:
○ [riscv64] [deoptimizer] Remove soft deopts (https://chromium-review.googlesource.com/c/v8/v8/+/3573783)
○ [riscv64][sim] Increase the simulator's stack limit margin (
https://chromium-review.googlesource.com/c/v8/v8/+/3573784)
○  [riscv64][wasm] Count direct calls (https://chromium-review.googlesource.com/c/v8/v8/+/3578235)
○ [riscv64] Fix atomic timeout  (https://chromium-review.googlesource.com/c/v8/v8/+/3578101)
○ [wasm] flag_liftoff_only should disable wasm-dynamic-tiering in cctest
(https://chromium-review.googlesource.com/c/v8/v8/+/3578109 )
○ [riscv64][osr] Add an install-by-offset mechanism  ( https://chromium-review.googlesource.com/c/v8/v8/+/3581535)
○ WIP: fixing CI failure caused by introduction of wasm dynamic tiering-up
○ WIP: fixing CI failure  Fix emit_u32_to_uintptr to be zero-extended

● RV32G Porting: in progressing
○ Finished some initial porting for macro-assembler (https://github.com/riscv-collab/v8.git branch RV32G)
● Node.js update: from Stewart X Addison (Node.js core collaborator):
○ working on an PR to make node.js run automatically on each release.(WIP)
○ trialled running RISC-V through the Node.js unofficial build processes now so there's a version up at
https://unofficial-builds.nodejs ... inux-riscv64.tar.xz
○ serval test cases hangs at this version on Unleash (PLCT also recorded test result
https://github.com/v8-riscv/node/issues/19 , time out for some crypto related cases)OpenJDK for RISC-V 更新(RV64及upstream)
1、JDK-8283865: riscv: Break down -XX:+UseRVB into seperate options for each bitmanip extension
https://github.com/openjdk/jdk/pull/8032
2、8283937: riscv: RVC: Fix c_beqz to c_bnez
https://github.com/openjdk/jdk/pull/8034
3、JDK-8284068: riscv: should call Atomic::release_store in JavaThread::set_thread_state
https://github.com/openjdk/jdk/pull/8055解释器及公共代码部分:
1、目前各个测试集的支持进度如下:SPECjvm  100%(张定立),  DaCapo 78%(章翔),jtreg 74%(曹贵),
jcstress 99%(曹贵)。
2、Make load_at/store_at atomically in barrierSetAssembler(张定立,曹贵)
https://github.com/openjdk-riscv/jdk11u/pull/368
3、Fix pass double args in jniTypes_riscv32.hpp(曹贵)
https://github.com/openjdk-riscv/jdk11u/pull/369
4、Fix generate_fast_get_int_field0 on jniFastGetField_riscv32.cpp(章翔)
https://github.com/openjdk-riscv/jdk11u/pull/372
JIT部分:
1、Remove assertions not satisfied in current jdk version(张定立)
https://github.com/openjdk-riscv/jdk11u/pull/365
OpenJDK for RISC-V 更新(RV32/PLCT)openEuler RISC-V
● 修包:+50个PR:
○ 详见:https://github.com/isrc-cas/tars ... eekly/2022-04-06.md   
● 镜像制作:
○ 增加生成tar格式系统压缩文件脚本:https://gitee.com/openeuler/RISC ... ols/osmaker/qemuimg
○ 文档更新:镜像脚本使用说明
● 22.03发布:https://mirror.iscas.ac.cn/opene ... Euler-RISC-V/22.03/
● openEuler RISC-V 软件源&每日镜像计划:
○ 建立openEuler RISC-V 软件源暂定运行机制
https://gitee.com/openeuler/RISC ... proposal/ORSP003.md
○ 建立软件源更新中间站,并完成obsRepo→tarsierRepo→iscasRepo第一次同步:
obsRepo:http://119.3.219.20:82/openEuler ... V/standard_riscv64/
tarsierRepo:https://repo.tarsier-infra.com/openEuler-RISC-V/development/
iscasRepo:https://mirror.iscas.ac.cn/openeuler-sig-riscv/openEuler-RISC-V/
● Firefox移植:完成基础移植,能够展示非视频网页;视频网站还未能展示,问题分析和优化中
● 测试
○ 在openEuler RISC-V QEMU搭建XFCE环境
○ openEuler 22.03 RISC-V QEMU rootfs镜像预装包测试Gentoo for RISC-V 的情况更新
● 两周共计 48 个 keywording 提交: https://rvk3b.plctlab.org/riscv/RISC-V-双周会/20220414/commits.txt
○ net-libs/nodejs: ~riscv keyword finally pushed:
https://github.com/gentoo/gentoo ... 1766aec467a4fd1c317
PR to upstream to fix timeout in riscv:
https://github.com/nodejs/node/pull/42674
● dev-util/valgrind: experimental support for riscv:
https://github.com/gentoo/riscv/ ... f8b4d0249ab86dc037a
● sys-kernel/sifive-sources dropped, switch to sys-kernel/gentoo-sources (>5.17.0)
● app-shells/fish fix atomic issue:
https://github.com/fish-shell/fish-shell/pull/8851
● Tool: bug-wrangler irc bot https://github.com/ArchFeh/bug-wranglerArch Linux RISC-V (东东)
1. 移植进度
[extra] 2540 / 2968 (85.57%)
[community] 6926 / 9102 (76.09%)
2. Archriscv-packages merged 51 PR. highlights
Fixpkg: zlib
3. Add blog: A RISC-V gcc pitfall revealed by a glibc updateFedora for RISC-VDebian for RISC-V
1. Debian-CI相关(特别感谢rvlab)
[修改分区表参数]                     
https://wiki.debian.org/Installi ... reparing_disk_image
[测试CI环境]
https://lists.debian.org/debian-riscv/2022/04/msg00002.html
[unmatched boot from nvme–Debian]
http://www.aftermath.cn/2022/04/ ... t-from-nvme-debian/
2. RFS(Request For Sponsor)
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1009291FW相关更新 (王翔)
❖ opensbi
➢ thead c9xx性能计数器和标准不兼容,通过添加厂商扩展来支持性能计
数器
➢ linux 8205uart添加了一个属性reg-offset,标识寄存器的相对基地址的
偏移量,同步代码到opensbi
➢ 修正MSTATUS_VS的值
➢ pmu event bitmap编码问题RISCV性能跟踪小队 - 陈小欧
  ● 在unmatched上运行:Embench, Dhrystone, FPMark, Linpack, Whetstone, Coremark
https://github.com/mollybuild/RI ... d-Benchmarks-on-Unm
atched.md
○ Embench:only support rv32 now
○ Dhrystone:2066115.8 dhrystones per second
○ FPMark: lu failed for verification.
○ Linpack: 92.8 MFLOPS (Array size 200*200)
○ Whetstone: 649.4 MIPS
○ Coremark: 12363 Iterations/Sec香山开源RISC-V处理器 - ICT / PCL
- 南湖架构 FPGA 验证持续进行中
- 最新修复 HuanCun 及 MMU 的若干功能性 BugMLIR RISC-V Vector (RVV) Dialect Proposal - 张洪滨
注:提交者不在线(
hongbin2019@iscac.ac.cn

完成 RISC-V Vector Dialect 集成测试
- RFC Patch -  https://reviews.llvm.org/D108536
- Upate Post -  https://discourse.llvm.org/t/rfc ... rvv-dialect/4146/32
- LLVM Weekly - https://discourse.llvm.org/t/llvm-weekly-431-april-4th-2022/61460
相关资料
- MLIR + RVV 集成测试环境搭建文档 - https://gist.github.com/zhanghb9 ... 298911b8a4235e68497
- 关于统一集成测试配置的讨论 - https://discourse.llvm.org/t/rfc ... rvv-dialect/4146/32面向 RISC-V 的 OpenCV 情况更新 - 韩柳彤
● 提交了一个 OpenCV 演进提案(OpenCV Evolution,OE) :
issue#21829:Modify universal intrinsics for size-less architectures
在OE-27 - Wide Universal Intrinsics的基础上,进一步扩展Universal Intrinsics的能力,从而更
好的支持可变长向量体系结构。
将与 OpenCV 核心团队和 ARM 团队讨论,从而确保我们所提出的设计与其他可变长度架构兼

● 示例项目:https://github.com/hanliutong/rvv-ui
列出了一些兼容性问题:虽然需要修改现有的universal intrinsic API,但目前看来是可行的Chisel and Additional Technology / Sequencer
● @JACKLIAO0: LazyModule单元测试 https://github.com/chipsalliance/diplomacy/pull/10
● @wissygh: SRT RTL prototyping
● @CircuitCoder: BitSetRange https://github.com/chipsalliance/chisel3/pull/2449
● @ndxsf: 同 sequencer 一起学习完CIRCT InstanceGraph 并移植到GAA上
● @ZenithalH: RocketChip 拆包工作 https://github.com/chipsalliance/rocket-chip/pull/2956
● @oceansen @dramforever @LucasWye @midnighter95 @SharzyL @yqszxx @seehowl @SingularityKChen 摸了VM:为Linux添加虚存拓展支持-潘庆霖
● (提交人不在线)
● 发送了新的Svnapot patchset,在这里
https://patchwork.kernel.org/pro ... 2461073-1-panqingli
n2020@iscas.ac.cn/
● 由于misa没有Svnapot的坑位且从硬件获取拓展支持信息的手段稍显混乱,目前采用KConfig项
来手动控制Svnapot的开启/关闭Spidermonkey for RISC-V - 吴伟
● PLCT V8 小队开始用自由时间构建 Spidermonkey
○ 重新加入了 PLCT Roadmap 2022 计划
○ 但是这次并没有重新放入到  LFX Mentorship(专业对口的太少了)
https://github.com/plctlab/gecko-dev-riscv/pull/3
● 欢迎感兴趣移植的小伙伴通过实习、兼职或全职形式加入
https://github.com/lazyparser/we ... open-internships.md
○RISC-V 笔记本计划的进展 / 吴伟
● 过去6周硬件部分没有观察到有新的动作
○ 香山处理器的性能很有希望
○ 只要有钱,找对人,目前深圳那边的工厂做个笔记本是确定性的
○ 所以目前的瓶颈还是在 CPU/SoC 部分的选型
● 软件部分,目光开始看向 LibreOffice
○ 写入到了 Roadmap 2022 而且已经有了一位全职员工加入! 掌声欢迎钱耀津同学!


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 楼主| 发表于 2022-4-15 11:36:43 | 显示全部楼层
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 楼主| 发表于 2022-4-29 16:58:11 | 显示全部楼层
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