[Github] Upload built docs as artifact from test build docs job (#118159)

This patch makes the test documentation build job upload the docs that
have been built as artifacts. This makes it much easier to take a peek
at the resulting documentation rather than just being able to see that
it builds.

.github/workflows/docs.yml

@@ -112,58 +112,87 @@ jobs:
           sudo apt-get update
           # swig and graphviz are lldb specific dependencies
           sudo apt-get install -y cmake ninja-build swig graphviz
+      - name: Setup output folder
+        run: mkdir built-docs
       - name: Build LLVM docs
         if: steps.docs-changed-subprojects.outputs.llvm_any_changed == 'true'
         run: |
           cmake -B llvm-build -GNinja -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_SPHINX=ON ./llvm
           TZ=UTC ninja -C llvm-build docs-llvm-html docs-llvm-man
+          mkdir built-docs/llvm
+          cp -r llvm-build/docs/* built-docs/llvm/
       - name: Build Clang docs
         if: steps.docs-changed-subprojects.outputs.clang_any_changed == 'true'
         run: |
           cmake -B clang-build -GNinja -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_PROJECTS="clang" -DLLVM_ENABLE_SPHINX=ON ./llvm
           TZ=UTC ninja -C clang-build docs-clang-html docs-clang-man
+          mkdir built-docs/clang
+          cp -r clang-build/docs/* built-docs/clang/
       - name: Build clang-tools-extra docs
         if: steps.docs-changed-subprojects.outputs.clang-tools-extra_any_changed == 'true'
         run: |
           cmake -B clang-tools-extra-build -GNinja -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_PROJECTS="clang;clang-tools-extra" -DLLVM_ENABLE_SPHINX=ON ./llvm
           TZ=UTC ninja -C clang-tools-extra-build docs-clang-tools-html docs-clang-tools-man
+          mkdir built-docs/clang-tools-extra
+          cp -r clang-tools-extra-build/docs/* built-docs/clang-tools-extra/
       - name: Build LLDB docs
         if: steps.docs-changed-subprojects.outputs.lldb_any_changed == 'true'
         run: |
           cmake -B lldb-build -GNinja -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_PROJECTS="clang;lldb" -DLLVM_ENABLE_SPHINX=ON ./llvm
           TZ=UTC ninja -C lldb-build docs-lldb-html docs-lldb-man
+          mkdir built-docs/lldb
+          cp -r lldb-build/docs/* built-docs/lldb/
       - name: Build libunwind docs
         if: steps.docs-changed-subprojects.outputs.libunwind_any_changed == 'true'
         run: |
           cmake -B libunwind-build -GNinja -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_RUNTIMES="libunwind" -DLLVM_ENABLE_SPHINX=ON ./runtimes
           TZ=UTC ninja -C libunwind-build docs-libunwind-html
+          mkdir built-docs/libunwind
+          cp -r libunwind-build/docs/* built-docs/libunwind
       - name: Build libcxx docs
         if: steps.docs-changed-subprojects.outputs.libcxx_any_changed == 'true'
         run: |
           cmake -B libcxx-build -GNinja -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_RUNTIMES="libcxxabi;libcxx;libunwind" -DLLVM_ENABLE_SPHINX=ON ./runtimes
           TZ=UTC ninja -C libcxx-build docs-libcxx-html
+          mkdir built-docs/libcxx
+          cp -r libcxx-build/docs/* built-docs/libcxx/
       - name: Build libc docs
         if: steps.docs-changed-subprojects.outputs.libc_any_changed == 'true'
         run: |
           cmake -B libc-build -GNinja -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_RUNTIMES="libc" -DLLVM_ENABLE_SPHINX=ON ./runtimes
           TZ=UTC ninja -C libc-build docs-libc-html
+          mkdir built-docs/libc
+          cp -r libc-build/docs/* built-docs/libc/
       - name: Build LLD docs
         if: steps.docs-changed-subprojects.outputs.lld_any_changed == 'true'
         run: |
           cmake -B lld-build -GNinja -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_PROJECTS="lld" -DLLVM_ENABLE_SPHINX=ON ./llvm
           TZ=UTC ninja -C lld-build docs-lld-html
+          mkdir built-docs/lld
+          cp -r lld-build/docs/* built-docs/lld/
       - name: Build OpenMP docs
         if: steps.docs-changed-subprojects.outputs.openmp_any_changed == 'true'
         run: |
           cmake -B openmp-build -GNinja -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_PROJECTS="clang;openmp" -DLLVM_ENABLE_SPHINX=ON ./llvm
           TZ=UTC ninja -C openmp-build docs-openmp-html
+          mkdir built-docs/openmp
+          cp -r openmp-build/docs/* built-docs/openmp/
       - name: Build Polly docs
         if: steps.docs-changed-subprojects.outputs.polly_any_changed == 'true'
         run: |
           cmake -B polly-build -GNinja -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_PROJECTS="polly" -DLLVM_ENABLE_SPHINX=ON ./llvm
           TZ=UTC ninja -C polly-build docs-polly-html docs-polly-man
+          mkdir built-docs/polly
+          cp -r polly-build/docs/* built-docs/polly/
       - name: Build Flang docs
         if: steps.docs-changed-subprojects.outputs.flang_any_changed == 'true'
         run: |
           cmake -B flang-build -GNinja -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_PROJECTS="clang;mlir;flang" -DLLVM_ENABLE_SPHINX=ON ./llvm
           TZ=UTC ninja -C flang-build docs-flang-html
+          mkdir built-docs/flang
+          cp -r flang-build/docs/* built-docs/flang/
+      - name: Upload docs
+        uses: actions/upload-artifact@v4
+        with:
+          name: docs-output
+          path: built-docs/