# Windows variant of the SPIRV CI: builds LLVM/Clang/translator/Comgr in
# one job and runs SPIRV-relevant test suites in parallel test jobs that
# consume a GHA artifact uploaded by the build job. Mirrors spirv-ci-linux.yml
# in shape; differs in runner, MSVC env setup, no container, no strip.

name: SPIRV Compiler CI - Windows

on:
  workflow_call:

jobs:
  # =====================================================================
  # Build LLVM + Clang + amd-llvm-spirv + device-libs + Comgr.
  # =====================================================================
  build:
    name: Build
    runs-on: azure-windows-scale-rocm
    timeout-minutes: 180
    defaults:
      run:
        shell: bash
    outputs:
      llvm_project_sha: ${{ steps.resolve_llvm_sha.outputs.sha }}

    steps:
      # Long path support for the deep llvm-project tree under runner workspace.
      - name: Enable git long paths
        run: git config --global core.longpaths true

      # Pinned ninja 1.12.1 — TheRock pins this version because 1.13.0 has a bug.
      - name: Install ninja
        run: choco install -y ninja --version 1.12.1

      # MSVC environment so cmake -GNinja can find cl.exe + link.exe.
      - name: Configure MSVC
        uses: ilammy/msvc-dev-cmd@0b201ec74fa43914dc39ae48a89fd1d8cb592756 # v1.13.0

      # zstd dev libs for clang-offload-bundler compression support. Two
      # vcpkg installs exist on this runner: C:\vcpkg (classic mode, what
      # `vcpkg` in PATH resolves to) and the MSVC-bundled one at $VCPKG_ROOT
      # (manifest-mode only — no `vcpkg install <pkg>` support). We use
      # C:\vcpkg for both install and toolchain lookup so they match.
      - name: Install zstd via vcpkg
        run: vcpkg install zstd:x64-windows

      - name: Checkout llvm-project (amd-staging)
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          repository: ROCm/llvm-project
          ref: amd-staging
          path: llvm-project
          fetch-depth: 1
          persist-credentials: false

      # Capture the resolved amd-staging SHA so test jobs can pin to the
      # exact commit this build used. Without this, test jobs re-resolve
      # `amd-staging` and may land on a newer commit if upstream merged
      # mid-run, triggering a cascade rebuild against an older build.ninja.
      - name: Resolve llvm-project SHA
        id: resolve_llvm_sha
        run: |
          SHA=$(git -C llvm-project rev-parse HEAD)
          echo "sha=$SHA" >> "$GITHUB_OUTPUT"
          echo "Pinned llvm-project SHA for test jobs: $SHA"

      - name: Checkout SPIRV-LLVM-Translator (PR head)
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          path: llvm-project/llvm/projects/SPIRV-LLVM-Translator
          fetch-depth: 1
          persist-credentials: false

      # CMAKE_TOOLCHAIN_FILE points cmake at the C:\vcpkg find_package
      # shims so LLVM_ENABLE_ZSTD=FORCE_ON locates the vcpkg-installed
      # zstd. FORCE_ON makes the configure fail loudly if zstd is missing
      # rather than silently building clang-offload-bundler without
      # compression.
      - name: Configure LLVM
        run: |
          cmake -G Ninja -S llvm-project/llvm -B build \
            -DCMAKE_BUILD_TYPE=Release \
            -DCMAKE_TOOLCHAIN_FILE="C:/vcpkg/scripts/buildsystems/vcpkg.cmake" \
            -DLLVM_ENABLE_ASSERTIONS=ON \
            -DLLVM_ENABLE_PROJECTS="clang;lld" \
            -DLLVM_TARGETS_TO_BUILD="AMDGPU;X86;SPIRV" \
            -DLLVM_ENABLE_ZSTD=FORCE_ON \
            -DLLVM_INCLUDE_TESTS=ON \
            -DLLVM_INSTALL_GTEST=ON \
            -DLLVM_LIT_ARGS="-sv --no-progress-bar"

      - name: Build LLVM + Clang + amd-llvm-spirv + test deps
        run: ninja -C build llvm-test-depends clang-test-depends amd-llvm-spirv

      # Use $(pwd -W) for cmake -D paths: in MSYS bash $PWD is Unix-style
      # (/c/...) which cmake's find_package can't traverse on Windows.
      # pwd -W returns Windows-style with forward slashes (C:/...).
      # Pass CMAKE_TOOLCHAIN_FILE here too: LLVM exports LLVMSupport
      # linking against zstd::libzstd_shared, and consumers like
      # find_package(LLVM) in device-libs/Comgr need the vcpkg toolchain
      # loaded so that imported zstd target is defined.
      - name: Configure device-libs
        run: |
          PWD_WIN=$(pwd -W)
          cmake -G Ninja -S llvm-project/amd/device-libs -B build-device-libs \
            -DCMAKE_BUILD_TYPE=Release \
            -DCMAKE_TOOLCHAIN_FILE="C:/vcpkg/scripts/buildsystems/vcpkg.cmake" \
            -DCMAKE_PREFIX_PATH=$PWD_WIN/build \
            -DLLVM_DIR=$PWD_WIN/build/lib/cmake/llvm

      - name: Build device-libs
        run: ninja -C build-device-libs

      - name: Configure Comgr
        run: |
          PWD_WIN=$(pwd -W)
          cmake -G Ninja -S llvm-project/amd/comgr -B build-comgr \
            -DCMAKE_BUILD_TYPE=Release \
            -DCMAKE_TOOLCHAIN_FILE="C:/vcpkg/scripts/buildsystems/vcpkg.cmake" \
            -DCMAKE_PREFIX_PATH="$PWD_WIN/build;$PWD_WIN/build-device-libs" \
            -DLLVM_DIR=$PWD_WIN/build/lib/cmake/llvm \
            -DAMDDeviceLibs_DIR=$PWD_WIN/build-device-libs/lib/cmake/AMDDeviceLibs \
            -DLLVM_EXTERNAL_SPIRV_LLVM_TRANSLATOR_SOURCE_DIR=$PWD_WIN/llvm-project/llvm/projects/SPIRV-LLVM-Translator \
            -DBUILD_TESTING=ON

      - name: Build Comgr
        run: ninja -C build-comgr amd_comgr

      # No strip on Windows: PE/COFF debug info lives in separate .pdb files
      # rather than embedded in the .exe/.dll, so the binaries themselves are
      # already stripped. Tar directly.
      - name: Tar build trees
        run: tar -cf windows-build-tree.tar build build-comgr build-device-libs

      - name: Upload build tree artifact
        uses: actions/upload-artifact@v4
        with:
          name: windows-build-tree
          path: windows-build-tree.tar
          retention-days: 1
          compression-level: 6
          if-no-files-found: error

  # =====================================================================
  # Test - SPIRV translator lit (with PR-head vs amd-staging baseline diff)
  # =====================================================================
  test_translator_lit:
    name: Test SPIRV translator lit
    needs: build
    runs-on: azure-windows-scale-rocm
    timeout-minutes: 30
    defaults:
      run:
        shell: bash

    steps:
      - name: Enable git long paths
        run: git config --global core.longpaths true

      - name: Install ninja
        run: choco install -y ninja --version 1.12.1

      - name: Configure MSVC
        uses: ilammy/msvc-dev-cmd@0b201ec74fa43914dc39ae48a89fd1d8cb592756 # v1.13.0

      # zstd must be present at the same C:\vcpkg path the build job used,
      # because build.ninja embeds C:/vcpkg/installed/.../zstd.lib as a
      # build-edge input that ninja validates at planning time.
      - name: Install zstd via vcpkg
        run: vcpkg install zstd:x64-windows

      - name: Checkout llvm-project (pinned to Build job SHA)
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          repository: ROCm/llvm-project
          ref: ${{ needs.build.outputs.llvm_project_sha }}
          path: llvm-project
          fetch-depth: 1
          persist-credentials: false

      - name: Checkout SPIRV-LLVM-Translator (PR head)
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          path: llvm-project/llvm/projects/SPIRV-LLVM-Translator
          fetch-depth: 1
          persist-credentials: false

      - name: Download build tree artifact
        uses: actions/download-artifact@v4
        with:
          name: windows-build-tree

      # touch build.ninja so it's newer than CMakeCache.txt — without it
      # tar -m's per-file mtimes can trigger a cmake regen + cascade rebuild.
      - name: Untar build trees
        run: |
          tar -xmf windows-build-tree.tar
          touch build/build.ninja build-comgr/build.ninja build-device-libs/build.ninja

      - name: Test - SPIRV Translator (check-amd-llvm-spirv) [PR head]
        id: check_spirv_xlator
        continue-on-error: true
        run: |
          set -o pipefail
          ninja -C build check-amd-llvm-spirv 2>&1 | tee build/check-amd-llvm-spirv.log

      - name: Capture PR head translator failures
        if: always()
        run: |
          grep -oE '^FAIL: LLVM_SPIRV :: \S+' build/check-amd-llvm-spirv.log \
            | sort -u > build/spirv-fails-pr.txt || true
          echo "PR head failures:"; cat build/spirv-fails-pr.txt

      - name: Switch translator to amd-staging tip for baseline
        if: always()
        run: |
          cd llvm-project/llvm/projects/SPIRV-LLVM-Translator
          git fetch --depth=1 origin amd-staging
          git checkout FETCH_HEAD

      - name: Test - SPIRV Translator [baseline amd-staging]
        if: always()
        id: check_spirv_baseline
        continue-on-error: true
        run: |
          set -o pipefail
          cmake -G Ninja -S llvm-project/llvm -B build
          ninja -C build check-amd-llvm-spirv 2>&1 \
            | tee build/check-amd-llvm-spirv-baseline.log

      - name: Capture baseline translator failures
        if: always()
        run: |
          grep -oE '^FAIL: LLVM_SPIRV :: \S+' build/check-amd-llvm-spirv-baseline.log \
            | sort -u > build/spirv-fails-baseline.txt || true
          echo "Baseline failures:"; cat build/spirv-fails-baseline.txt

      - name: Gate - new translator lit failures
        if: always()
        run: |
          if [ ! -f build/spirv-fails-pr.txt ] || [ ! -f build/spirv-fails-baseline.txt ]; then
            echo "::warning::Could not compute new-failure delta (missing pr.txt or baseline.txt); not gating."
            exit 0
          fi
          new=$(comm -23 build/spirv-fails-pr.txt build/spirv-fails-baseline.txt)
          if [ -n "$new" ]; then
            count=$(printf '%s\n' "$new" | wc -l)
            echo "::error::$count new translator lit failure(s) introduced by this PR (Windows):"
            printf '%s\n' "$new" | sed 's/^/::error::  /'
            exit 1
          fi
          echo "No new translator lit failures vs amd-staging baseline."

  # =====================================================================
  # Test - LLVM SPIRV codegen lit suite
  # =====================================================================
  test_codegen:
    name: Test LLVM SPIRV codegen
    needs: build
    runs-on: azure-windows-scale-rocm
    timeout-minutes: 15
    defaults:
      run:
        shell: bash

    steps:
      - name: Enable git long paths
        run: git config --global core.longpaths true

      - name: Install ninja
        run: choco install -y ninja --version 1.12.1

      - name: Configure MSVC
        uses: ilammy/msvc-dev-cmd@0b201ec74fa43914dc39ae48a89fd1d8cb592756 # v1.13.0

      # zstd must be present at the same C:\vcpkg path the build job used,
      # because build.ninja embeds C:/vcpkg/installed/.../zstd.lib as a
      # build-edge input that ninja validates at planning time.
      - name: Install zstd via vcpkg
        run: vcpkg install zstd:x64-windows

      - name: Checkout llvm-project (pinned to Build job SHA)
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          repository: ROCm/llvm-project
          ref: ${{ needs.build.outputs.llvm_project_sha }}
          path: llvm-project
          fetch-depth: 1
          persist-credentials: false

      - name: Checkout SPIRV-LLVM-Translator (PR head)
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          path: llvm-project/llvm/projects/SPIRV-LLVM-Translator
          fetch-depth: 1
          persist-credentials: false

      - name: Download build tree artifact
        uses: actions/download-artifact@v4
        with:
          name: windows-build-tree

      # touch build.ninja so it's newer than CMakeCache.txt — without it
      # tar -m's per-file mtimes can trigger a cmake regen + cascade rebuild.
      - name: Untar build trees
        run: |
          tar -xmf windows-build-tree.tar
          touch build/build.ninja build-comgr/build.ninja build-device-libs/build.ninja

      - name: Test - LLVM SPIRV backend (check-llvm-codegen-spirv)
        run: ninja -C build check-llvm-codegen-spirv

  # =====================================================================
  # Test - Comgr (lit + gtest + ctest)
  # =====================================================================
  test_comgr:
    name: Test Comgr
    needs: build
    runs-on: azure-windows-scale-rocm
    timeout-minutes: 30
    defaults:
      run:
        shell: bash

    steps:
      - name: Enable git long paths
        run: git config --global core.longpaths true

      - name: Install ninja
        run: choco install -y ninja --version 1.12.1

      - name: Configure MSVC
        uses: ilammy/msvc-dev-cmd@0b201ec74fa43914dc39ae48a89fd1d8cb592756 # v1.13.0

      # zstd must be present at the same C:\vcpkg path the build job used,
      # because build.ninja embeds C:/vcpkg/installed/.../zstd.lib as a
      # build-edge input that ninja validates at planning time.
      - name: Install zstd via vcpkg
        run: vcpkg install zstd:x64-windows

      - name: Checkout llvm-project (pinned to Build job SHA)
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          repository: ROCm/llvm-project
          ref: ${{ needs.build.outputs.llvm_project_sha }}
          path: llvm-project
          fetch-depth: 1
          persist-credentials: false

      - name: Checkout SPIRV-LLVM-Translator (PR head)
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          path: llvm-project/llvm/projects/SPIRV-LLVM-Translator
          fetch-depth: 1
          persist-credentials: false

      - name: Download build tree artifact
        uses: actions/download-artifact@v4
        with:
          name: windows-build-tree

      # touch build.ninja so it's newer than CMakeCache.txt — without it
      # tar -m's per-file mtimes can trigger a cmake regen + cascade rebuild.
      - name: Untar build trees
        run: |
          tar -xmf windows-build-tree.tar
          touch build/build.ninja build-comgr/build.ninja build-device-libs/build.ninja

      - name: Test - Comgr (check-comgr)
        id: check_comgr
        env:
          AMD_COMGR_REDIRECT_LOGS: stderr
        run: ninja -C build-comgr check-comgr