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东亚时区RISC-V双周会(20220526)

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发表于 2022-5-27 08:34:29 | 显示全部楼层 |阅读模式
东亚时区RISC-V双周会
2022年05月26日·第036次
https://github.com/cnrv/RISCV-East-Asia-Biweekly-Sync
Host: 廖春玉
Organizer: PLCT Lab wuwei2016@iscas.ac.cn会议议程(15:00 - 16:00)
● 自我介绍、等待参会者接入、非技术话题八卦(5分钟)
● RVI 的更新和八卦(基本上跟东亚双周会群内消息同步)
● Unratified Specs 的参考实现进展
● 东亚地区小伙伴的项目更新
● 自由讨论RISC-V International 同步、全球开源社区八卦
https://m.youtube.com/watch?v=LY98foD0SkY
●RISC-V Summit China 2022:最新情报
● 由于上海疫情一直在推迟和观测
● 5月份局面转好,目前定在8月下旬
● 有可能主会转为线上活动,避免线下跨越城市的聚会组织
● 最快6月初发布CFP和活动官网AOSP for RISC-V - 汪辰、陆旭凡
这两周的工作主要集中在对 Andorid 上的 Bionic 库解决故障和优化工作:
RVI upstream:
1. 解决了 setjmp/longjmp 处理中 checksum 检查的问题,并优化代码组织。
https://github.com/riscv-android-src/platform-bionic/pull/24
2. 优化 Bionic 中 TLS (Thread Local Storage),删除了 TLS_SLOT_SELF,因为该项只只针对 x86, RISC-V 上不需
要。遵循 RISC-V ELF 规范添加 TLS_DTV_OFFSET 定义,优化代码组织结构和添加必要注释。
https://github.com/riscv-android-src/platform-bionic/pull/25
aosp-riscv development
1. 针对当前 clang 工具链对 cfi 编译支持的缺陷,提供临时 workaround,采用修改链接选项支持 cfi 为 true 的构建配
置。https://gitee.com/aosp-riscv/platform_build_soong/pulls/7
2. 与 RVI upstream 的同步工作RISC-V GCC进展
CMO的GCC扩展支持已经merge进入upstream
https://gcc.gnu.org/git/?p=gcc.g ... ShiYulong;st=author
提交了ZC扩展的支持代码到openhw仓库,正在review中
https://github.com/openhwgroup/corev-gcc/pull/8
https://github.com/openhwgroup/corev-binutils-gdb/pull/42
更新了zfinx的代码实现,对20191213 isa-spec进行了兼容,重新提交了patch到upstream,binutils部分支持了zhinx,已提交patch
https://gcc.gnu.org/pipermail/gcc-patches/2022-May/595397.html
https://sourceware.org/pipermail/binutils/2022-May/121038.html
https://sourceware.org/git/?p=bi ... c588d17a102d1f8b5eb
修复了几个upstream在回归测试中发现的bug
https://gcc.gnu.org/git/?p=gcc.g ... afc42a0e86b7ba72b12
https://gcc.gnu.org/git/?p=gcc.g ... 3bcc2fd0aClang/LLVM 进展 (PLCT)
Gollvm: 添加了redhat的检查路径:https://go-review.googlesource.com/c/gollvm/+/406115
Upstream, 新的patch:
● 增加了ISD::EH_DWARF_CFA,解决gollvm编译中的问题: https://reviews.llvm.org/D126181
● 修复libcxx 的Git Version错误提示: https://reviews.llvm.org/D126222
● 解决vector reduce的crash问题,测试用例整理很麻烦: https://reviews.llvm.org/D126372
● 给arithmetic fix vector添加代价模型,但是应该不准确:https://reviews.llvm.org/D126060Clang / LLVM 社区的更新 (廖春玉、陆旭凡)
1. D125787 Fix RVV stack frame alignment bugs
2. D125497 call relaxation
3. D125270 D125271 优化vsetvli插入
4. D126392 Use two ADDIs to do some stack pointer adjustments.QEMU/Spike 进展 (PLCT)
● Zce支持修复了部分测试bug
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
● 其他工作
○ 尝试修复了qemu上游关于扩展检查的几个问题
https://lists.gnu.org/archive/ht ... 22-05/msg00350.html
○ 向上游发起了zmmul支持的2版PR
https://lists.gnu.org/archive/ht ... 5/msg00399.htmlgem5 RVV 1.0 支持情况
● 开源网址:https://github.com/plctlab/plct-gem5
● 已提交 upstream:https://gem5-review.googlesource.com/c/public/gem5/+/59789
● RFC:https://docs.google.com/document ... ssUUsDYR4lu95Q/edit
● 已经和上游 Maintainer 进行邮件沟通,目前 RVV 还有其他社区实现,但后续的开发应该会在 plct-gem5 的基
础上继续推进。V8 for RISC-V 更新(邱吉、陆亚涵)
Upstram riscv64 update:
   跟随上游改动
1. 3662541: [riscv64] Implement emit_i8x16_relaxed_swizzle | https://chromium-review.googlesource.com/c/v8/v8/+/3662541
2. 3654978: [riscv64][wasm-relaxed-simd] Add liftoff min/max operations on RISCV64 |
https://chromium-review.googlesource.com/c/v8/v8/+/3654978
3. 3651507: [riscv64][wasm-relaxed-simd] Keep q15_mul emit operations consistent |
https://chromium-review.googlesource.com/c/v8/v8/+/3651507
4. 3647968: [riscv64] Implement emit_s128_relaxed_laneselect | https://chromium-review.googlesource.com/c/v8/v8/+/3647968
5. 3600532: [riscv64] Add macro to control disassemble rvv | https://chromium-review.googlesource.com/c/v8/v8/+/3600532
6. 3642243: [riscv64] Implement relaxed_i16x8_q15mulr_s | https://chromium-review.googlesource.com/c/v8/v8/+/3642243
Riscv32 update: https://github.com/riscv-collab/v8 branch RV32G
  修复了 rv2 assembler 的测试错误
1. 1d8393aa1a [issue605] Fix test-assembler-riscv32/jump_tables2 (#606)
2. eb997f7b68 [issue603] fix test-assembler-riscv32/li_estimate (#604)
3. a20d1cf49b [issue601] Fix test-assembler-riscv32/TARGET_ADDR (#602)
4. a228608d4a [issue599] Fix test-assembler-riscv32/RVC_CI (#600)
5. 6c928d3e59 Fix test-assembler-riscv32/sll/slli/fcvt.l.s/fmv.x.d (#598)
6. 2c60ed790d fix-591 (#596)
7. cfba633a17 fix unittest (#588)
8. 5435691998 Fix argument type for native function prototypes (#590)
9. 41daae1f12 Enable test-assembler-riscv32 (#584)
10. 5fd47f4365 Fix some cctest error (#587)
11. aede1b9563 fix-583 (#585)
12. fe80ff91bb changed 32/64 suffix from m instructions (#582)OpenJDK for RISC-V 更新(RV64及upstream)
JDK-8287194: build failure on riscv after JDK-8286825 https://github.com/openjdk/jdk/pull/88591、Fix bad AD file with 'CmpUL': https://github.com/openjdk-riscv/jdk11u/pull/392 (张定立&曹贵)
2、Fix clearArray node not matched at riscv32 platform:https://github.com/openjdk-riscv/jdk11u/pull/393(曹贵)
3、Fix bad AD file with 'OrI':https://github.com/openjdk-riscv/jdk11u/pull/396(曹贵&张定立)
4、Change StackAlignmentInBytes to 16 according to riscv-spec:https://github.com/openjdk-riscv/jdk11u/pull/397 (张定立)
5、OpenJDK Hotspot ad文件简介:https://zhuanlan.zhihu.com/p/515274874 (史宁宁)
OpenJDK for RISC-V 更新(RV32/PLCT)openEuler RISC-V
● oerv OBS 构建
○ openEuler:22.03 :4075/4184 39个包变动
○ openEuler:22.03:Epol : 598/679 新增qt5-qtwebengine 包
○ Factory:RISC-Vython : 1426/1434 共75个包变
● PR 新增 43个
https://gitee.com/openeuler/RISC ... ports/2022-05-19.md
● RISC-V 软件源&每日镜像计划
○ 完成每日镜像制作,并输出qemu测试镜像。
○ 镜像使用说明文档:https://gitee.com/openeuler/RISC ... est_example_xfce.md
● 流程
○ ORSP004 openEuler RISC-V 开发版本暂定发版测试流程
● 测试
○ 对qemu镜像进行测试(进行中)Gentoo for RISC-V 的情况更新 (Gentoo小队)
● A total of 46 keywording commits: https://whale.plctlab.org/riscv/RISC-V-双周会/20220526/commits.txt
○ dev-java/openjdk: add riscv support for openjdk17
■ Keywording: gentoo/gentoo@c454ac0b5559d7c9d27f1cb73f8e52d4055ac754
■ PR: https://github.com/gentoo/gentoo/pull/25535
● Fix machine recognition for c910v
https://github.com/xianyi/OpenBLAS/pull/3629
● RISC-V Binhost progress
○ The CL(calculate-linux) Xfce4 image is ready for unmatched board
■ Image: https://mirror.onfoo.top/images/ ... 05.18.rootfs.wic.xz
■ Usage: https://mirror.onfoo.top/images/README.txt
○ have binpkg host for CL/Gentoo (include KDE/lxde/lxqt/xfc4 WM support)
https://mirror.onfoo.top/calculate/grp/
○ implement --unique-use option for eclean-pkg
■ Bug: https://bugs.gentoo.org/727576
■ PR: https://github.com/gentoo/gentoolkit/pull/20 Arch Linux RISC-V (东东)
1. 移植进度
[extra] 2593 / 3039 (85.32%)(新增11)
[community] 7166 / 9187 (78.00%)(新增37)
2. Archriscv-packages merged 44 PR. highlights
Updpkg: rust 1.61.0Fedora for RISC-V (傅炜)
Fedora 36
● 添加桌面系统支持:
○ lxde
○ lxqt
○ Sugar
● gnome上实体硬件待测试
● Kde桌面正在冲刺中
● 总包量接近15000(>60%)Debian for RISC-V (于波)
[社区 debci支持riscv64]
https://ci.debian.net/packages/a/autopkgtest/
[fix ftbfs]
[rustc report] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1011061
[gtkpod] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1011195
[qbs done] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1010755
[cpp-httplib done ]https://github.com/yhirose/cpp-httplib/issues/1199
[nodejs confirmed] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1010509#20
[thrift confirmed] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1011199.
[mesa-opencl-icd wishlist]https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=101120
[simgear patch ]https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1011260
[teem patch] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1011263
[waypipe patch]https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1011322
[warzone2100 patch] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1011367
[yoshimi done]https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1011451
[codeblacks patch]https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1011502
[firefox WIP] https://lists.debian.org/debian-riscv/2022/05/msg00065.html
[libreoffice WIP]https://lists.debian.org/debian-riscv/2022/05/msg00067.htmlFW相关更新 (王翔)
❖ opensbi
➢ FDT status属性相关代码更新到V4,忽略中断控制器中对cpu禁
用的检测
➢ 如果csr相关的操作引起的非法指令异常来自M模式,不应该转发
给S模式处理RISCV性能跟踪小队 - 陈小欧
  1, LLVM Flang issue trace:
● Cause SPEC CPU2017 Fortran case 607,621,627,628,654 failed
● LLVM SPEC-2017 issue:https://github.com/flang-compiler/f18-llvm-project/issues/1476
● 654 issue closed:https://github.com/llvm/llvm-project/issues/54163
● 627 issue update:add reduced code https://github.com/llvm/llvm-project/issues/54161
2, Run SPECjbb on unmatched (on going)香山开源RISC-V处理器 - ICT / PCL
- 验证相关
- 移植 Litmus Test,在 FPGA 上跑通
- 增加 DMA 虚拟设备测试缓存 TL-UL 通路
- 增加 mbist 等 DFT 设计
- 下一版昆明湖架构启动
- 暂时成立 4 个工作组:前端、后端流水线、访存单元、缓存子系统
- 工作组将进行常态例会,之后会邀请开发伙伴一起参与MLIR RISC-V Vector (RVV) Dialect Proposal - 张洪滨
等待 Review
- RFC Patch -  https://reviews.llvm.org/D108536
- RFC Post -  https://discourse.llvm.org/t/rfc ... rvv-dialect/4146/32
- 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
Google/IREE 伙伴正在 Review 将会一起推进
- 收到了 Google/IREE + RISC-V 伙伴的私信,正在进行相关实验,近期会给出反馈。面向 RISC-V 的 OpenCV 情况更新 - 韩柳彤
● 为 Universal Intrinsic 增加可变长向量指令的支持
Google Summer of Code 2022: Accepted - Community Bonding
示例项目:https://github.com/hanliutong/rvv-ui
为了与现有接口兼容,引入了新的包装层
● 提供了复用当前 Universal Intrinsic 用户代码的方法
● 导致其他平台上(AVX2)~1%的性能损失,正在与上游讨论
欢迎讨论:Issue#21829Chisel and Additional Technology / Sequencer
https://github.com/sequencer/playground/pull/27
○ add Xiang Shan to playground built from source integrating with boom and chipyard
https://github.com/chipsalliance/chisel3/pull/2518
○ Barrel Shifter
https://github.com/chipsalliance/rocket-chip/pull/2991
○ RocketChip test framework
https://github.com/riscv/riscv-debug-spec/pull/733
○ CI in debug-spec
● RVV is architecting
● OpenSSL by hongren
https://github.com/openssl/openssl/pull/18309
https://github.com/openssl/openssl/pull/18308
https://github.com/openssl/openssl/pull/18290
https://github.com/openssl/openssl/pull/18289
https://github.com/openssl/openssl/pull/18287
https://github.com/openssl/openssl/pull/18285
https://github.com/openssl/openssl/pull/18275
https://github.com/openssl/openssl/pull/18267
https://github.com/sequencer/arithmetic/pull/27
○ SRT test successfully
● RC&chisel3 library flow is on going!Spidermonkey for RISC-V - 吴伟
● 过去两周没有新的进展
○ 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2周硬件部分没有观察到有新的动作
○ 但是有了新的传言~
● 软件部分,目光开始看向
○ LibreOffice: 我们很高兴有一位全职员工 钱耀津 同学 all in!
■ ArchRV小队也有小伙伴开始参与
■ Debian小队的于波开始尝试
○ LuaJIT:呼唤勇士
○ DynamoRIO:呼唤勇士
○ Valgrind:呼唤勇士
○ DartVM:呼唤了!还没来……
○ Mono:需要么?
○ Chromium:SUSE上ok但是其它发行版还不行,呼唤勇士

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 楼主| 发表于 2022-5-27 08:36:14 | 显示全部楼层
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