feat: support v21 and drop v8

Author: shenxianpeng

.github/workflows/build.yml

@@ -20,9 +20,11 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        clang-version: [ 20, 19, 18, 17, 16, 15, 14, 13, 12.0.1, 12, 11, 10, 9, 8]
+        clang-version: [ 21, 20, 19, 18, 17, 16, 15, 14, 13, 12.0.1, 12, 11, 10, 9]
         os: [ linux, macosx, windows ]
         include:
+          - clang-version: 21
+            release: llvm-project-21.1.0.src
           - clang-version: 20
             release: llvm-project-20.1.0.src
           - clang-version: 19
@@ -51,9 +53,6 @@ jobs:
           - clang-version: 9
             release: llvm-project-9.0.1
             extra-cmake-args: '-DLLVM_ENABLE_Z3_SOLVER=OFF'
-          - clang-version: 8
-            release: llvm-project-8.0.1
-            extra-cmake-args: '-DCLANG_ANALYZER_ENABLE_Z3_SOLVER=OFF'
           - os: linux
             runner: ubuntu-22.04
             os-cmake-args: '-DLLVM_BUILD_STATIC=ON -DCMAKE_CXX_FLAGS="-s -flto" ${POSIX_CMAKE_ARGS} ${LINUX_CMAKE_ARGS}'
@@ -91,14 +90,6 @@ jobs:
       # The commit hash of this repository into the clang binaries
       shell: bash
       run: curl -L https://github.com/${{ github.repository }}/archive/${{ github.ref }}.tar.gz | tar xvz --strip 1
-    - name: Get llvm-project
-      if: ${{ matrix.clang-version == 8 }}
-      shell: bash
-      run: |
-        version=${RELEASE##llvm-project-}
-        curl -LO https://github.com/llvm/llvm-project/releases/download/llvmorg-${version}/llvm-${version}.src.tar.xz
-        curl -LO https://github.com/llvm/llvm-project/releases/download/llvmorg-${version}/cfe-${version}.src.tar.xz
-        curl -LO https://github.com/llvm/llvm-project/releases/download/llvmorg-${version}/clang-tools-extra-${version}.src.tar.xz
     - name: Get llvm-project
       if: ${{ matrix.clang-version >= 9 || matrix.clang-version == '12.0.1' }}
       shell: bash
@@ -123,10 +114,6 @@ jobs:
       shell: bash
       run: |
         tar xf ${{ matrix.release }}.tar.xz ${{ matrix.extra-tar-args }}
-    - name: Patch clang-8 includes
-      if: ${{ matrix.clang-version == 8 }}
-      shell: bash
-      run: patch ${{ matrix.release }}/llvm/include/llvm/Demangle/MicrosoftDemangleNodes.h include-cstdint-string-prior-to-using-uint8_t.patch
     - name: Patch trivially-copyable clang 9/10
       if: ${{ ( matrix.clang-version == 9 || matrix.clang-version == 10 ) && matrix.os == 'windows' }}
       shell: bash

README.md

@@ -9,7 +9,7 @@ Includes **[clang-format](https://clang.llvm.org/docs/ClangFormat.html), [clang-
 
 ## Clang Tools Version Support Matrix
 
-| Clang Tools |OS/Version |20|19|18 |17 |16 |15 |14 |13 |12 |11 |10 |9  |8  |
+| Clang Tools |OS/Version |21|20|19 |18 |17 |16 |15 |14 |13 |12 |11 |10 |9  |
 |:------------|-----------|--|--|---|---|---|---|---|---|---|---|---|---|---|
 |clang-format |Linux 64   |✔️|✔️|✔️ |✔️|✔️|✔️ |✔️|✔️ |✔️ |✔️|✔️| ✔️|✔️|
 |             |Window 64  |✔️|✔️|✔️ |✔️|✔️|✔️ |✔️|✔️ |✔️ |✔️|✔️| ✔️|✔️|
@@ -27,6 +27,8 @@ Includes **[clang-format](https://clang.llvm.org/docs/ClangFormat.html), [clang-
 > [!NOTE]
 >
 > Remove Support v7 (released in May 2019) by February 2025.
+>
+> Remove Support v8 (released in July 2019) by September 2025.
 
 ## Download