Add CIRCT to CI and update CI versions (#393)

* Add CIRCT to CI and update CI versions
* Fix CI sentinel to work properly

.github/workflows/install-circt/action.yml

@@ -0,0 +1,25 @@
+name: Install CIRCT
+
+inputs:
+  version:
+    description: 'version to install'
+    required: false
+    default: 'firtool-1.30.0'
+
+runs:
+  using: composite
+  steps:
+    - id: cache-circt
+      uses: actions/cache@v3
+      with:
+        path: circt
+        key: circt-${{ runner.os }}-${{ inputs.version }}
+
+    - shell: bash
+      if: steps.cache-circt.outputs.cache-hit != 'true'
+      run: |
+        mkdir circt
+        wget -q -O - https://github.com/llvm/circt/releases/download/${{ inputs.version }}/circt-bin-ubuntu-20.04.tar.gz | tar -zx -C circt/
+
+    - shell: bash
+      run: echo "$(pwd)/circt/bin" >> $GITHUB_PATH

.github/workflows/test.yml

@@ -16,20 +16,20 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Setup Scala
-        uses: olafurpg/setup-scala@v10
+        uses: actions/setup-java@v3
         with:
-          java-version: adopt@1.8
-      - name: Cache Scala
-        uses: coursier/cache-action@v5
+          distribution: 'adopt'
+          java-version: '8'
+          cache: 'sbt'
       - name: Calculate API Docs Cache Key
         id: calc-key
         run: |
           KEY=$(make --always-make --dry-run apis-${{ matrix.project }} | sha256sum | awk '{print $1}')
           echo "::set-output name=cache_key::${KEY}"
       - name: Cache API Docs
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         with:
           path: build/api/${{ matrix.project }}
           key: ${{ runner.os }}-${{ matrix.project }}-${{ steps.calc-key.outputs.cache_key }}
@@ -41,7 +41,7 @@ jobs:
       - name: Tar build artifacts
         run: tar zcf build/api/${{ matrix.project }}.tar.gz build/api/${{ matrix.project }}
       - name: Share API Docs
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v3
         with:
           name: ${{ matrix.project }}-api-docs
           path: build/api/${{ matrix.project }}.tar.gz
@@ -53,21 +53,23 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Setup Scala
-        uses: olafurpg/setup-scala@v10
+        uses: actions/setup-java@v3
         with:
-          java-version: [email protected]
-      - name: Cache Scala
-        uses: coursier/cache-action@v5
+          distribution: 'adopt'
+          java-version: '8'
+          cache: 'sbt'
+      - name: Install CIRCT
+        uses: ./.github/workflows/install-circt
       - name: Setup Ruby
         uses: actions/setup-ruby@v1
       - name: Setup Jekyll
         run: |
           gem install jekyll -v 4.2.0
           gem install jekyll-redirect-from
       - name: Download all built API docs
-        uses: actions/download-artifact@v2
+        uses: actions/download-artifact@v3
         with:
           path: artifacts
       - name: Untar build artifacts
@@ -85,13 +87,39 @@ jobs:
           FOLDER: docs/target/site
 
   # Sentinel job to simplify how we specify which checks need to pass in branch
-  # protection and in Mergify
+  # protection. This job checks that all jobs were successful.
   #
   # When adding new jobs, please add them to `needs` below
-  all_tests_passed:
-    name: "all tests passed"
+  check-tests:
+    name: "check tests"
     needs: [api-docs, website]
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
+    if: success() # only run if all tests have passed
+    outputs:
+      success: ${{ steps.setoutput.outputs.success }}
     steps:
-      - run: echo Success!
+      - id: setoutput
+        run: echo "success=true" >> $GITHUB_OUTPUT
 
+  # Related to check-tests above, this job _always_ runs (even if tests fail
+  # and thus check-steps is skipped). This two sentinel job approach avoids an
+  # issue where failing tests causes a single sentinel job to be skipped which
+  # counts as passing for purposes of branch protection.
+  #
+  # See: https://brunoscheufler.com/blog/2022-04-09-the-required-github-status-check-that-wasnt
+  all_tests_passed:
+    name: "all tests passed"
+    runs-on: ubuntu-20.04
+    if: always() # Always run so that we never skip this check
+    needs: check-tests
+      # Pass only if check-tests set its output value
+    steps:
+      - run: |
+          PASSED="${{ needs.check-tests.outputs.success }}"
+          if [[ $PASSED == "true" ]]; then
+            echo "### All tests passed! :rocket:" >> $GITHUB_STEP_SUMMARY
+            exit 0
+          else
+            echo "### One or more tests FAILED! :bangbang:" >> $GITHUB_STEP_SUMMARY
+            exit 1
+          fi