Update GNU status (#374)

* Enhance GCC backend and resolve RISE-CI issues

Updated the GNU toolchain backend for ZTT, optimized GEMM/GEMV operator verification, and reduced compilation time by approximately 5.05%-6.97%. Continued updates on Packed-SIMD extension and resolved issues found in RISE-CI operations.

* Enhance ZTT GNU toolchain and add Zvzip 0.3 support

Zvzip 0.3 version in GCC backend, updated API names, and included VLS support.

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Co-authored-by: xijing <84754181+xijing21@users.noreply.github.com>

Author: pz9115

20261013-ruyisdk-biweekly-78.md

@@ -68,6 +68,16 @@ RuyiSDK 软件的打包与分发工作：目前您可以直接在 GitHub 上查
   - 移植了 hypot, log10, log1p, sincospi, sinpi, tanpi 至现有的 newlib 向量数学框架。
 
 ### GCC
+- 完善了 ZTT 的 GNU 工具链后端，启动了 GEMM / GEMV 算子验证方案设计与优化，编译时间降低约 5.05%—6.97%，已经开始改善 GCC 后端的编译成本
+  - https://github.com/ruyisdk/riscv-gcc/tree/ztt-dev
+  - https://github.com/ruyisdk/AME-operator
+- 修复了 RISE-CI 运维中发现的一些问题
+  - https://github.com/riseproject-dev/riscv-gnu-toolchain-ci/pull/2
+  - https://github.com/riseproject-dev/gcc-postcommit-ci/pull/89
+- 持续推进 Packed-SIMD 扩展更新，已同步至0.6文档版本
+  - https://github.com/riscv/riscv-p-spec/releases/tag/v0.6
+- 提交了 Zvzip 0.3 版本的 gcc 后端支持，更新了 API 名称，添加了 VLS 支持
+  - https://patchwork.sourceware.org/project/gcc/patch/20261010020704.300115-1-jiawei@iscas.ac.cn/
 
 ### LLVM