[rocm7.1_internal_testing] Add ifu.yml to automate IFU process

Author: pragupta

.github/workflows/ifu.yml

@@ -0,0 +1,119 @@
+name: Sync with upstream
+
+on:
+  workflow_dispatch: {}
+  schedule:
+    # Runs every 14 days at 09:00 AM UTC/ 04:00 AM CST
+    - cron: "0 9 */14 * *"
+
+permissions:
+  contents: write        # push branches/tags
+  pull-requests: write   # create PRs
+
+concurrency:
+  group: ifu
+  # If two jobs are running simultaneously, we will queue them (not cancel the one running)
+  cancel-in-progress: false
+
+jobs:
+  ifu-workflow:
+    runs-on: ubuntu-latest
+    env:
+      # Configuration you described
+      UPSTREAM_REMOTE: upstream          # upstream remote name (pytorch/pytorch)
+      UPSTREAM_BRANCH: main              # pytorch/pytorch main
+      ROCM_REMOTE: origin                # this repo (fork); actions/checkout sets this to origin
+      ROCM_BRANCH: rocm7.1_internal_testing
+      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}   # used by gh; provided by Actions
+    steps:
+      - name: Checkout ROCm fork (full history)
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0           # need full history for merges/tags
+          submodules: recursive
+
+      - name: Add upstream remote (pytorch/pytorch)
+        run: |
+          if ! git remote get-url upstream >/dev/null 2>&1; then
+            git remote add upstream https://github.com/pytorch/pytorch.git
+          fi
+          # Confirm remotes
+          git remote -v
+
+      - name: Configure Git user
+        run: |
+          git config user.name  "github-actions[bot]"
+          git config user.email "github-actions[bot]@users.noreply.github.com"
+
+      - name: Fetch upstream and local branch
+        run: |
+          git fetch $UPSTREAM_REMOTE $UPSTREAM_BRANCH
+          git fetch $ROCM_REMOTE $ROCM_BRANCH
+
+      - name: Compute date tag and create working branch
+        id: tag
+        shell: bash
+        run: |
+          DATE="$(date +"%Y-%m-%d")"
+          TAG="${ROCM_BRANCH}_IFU_${DATE}"
+          echo "TAG=${TAG}" >> $GITHUB_OUTPUT
+          # Start from rocm branch
+          git checkout -b "$TAG" "${ROCM_REMOTE}/${ROCM_BRANCH}"
+          git status
+
+      - name: Create pre-merge tag
+        run: |
+          git tag "${{ steps.tag.outputs.TAG }}_pre"
+
+      - name: Merge upstream into working branch (non-interactive)
+        id: merge
+        run: |
+          if git merge "upstream/${UPSTREAM_BRANCH}" --no-edit; then
+            echo "merge_status=clean" >> $GITHUB_OUTPUT
+          else
+            echo "Merge conflicts detected. Committing current resolution snapshot."
+            git status
+            git add -A
+            git commit --no-edit 
+            echo "merge_status=conflicted" >> $GITHUB_OUTPUT
+          fi
+
+      - name: Post-merge submodule sync & pin
+        run: |
+          # Keep submodules consistent with the committed gitlinks
+          git submodule sync
+          git submodule update --init --recursive
+
+      - name: Push branch & tag to fork
+        run: |
+          git push ${ROCM_REMOTE} "${{ steps.tag.outputs.TAG }}"
+          git push ${ROCM_REMOTE} "${{ steps.tag.outputs.TAG }}_pre" || true
+
+      - name: Authenticate gh (non-interactive)
+        env:
+          GH_TOKEN: ${{ env.GH_TOKEN }}
+        run: |
+          # The GitHub-hosted runner has gh preinstalled.
+          gh auth status || echo "$GH_TOKEN" | gh auth login --with-token
+          gh repo set-default "${{ github.repository }}"
+
+      - name: Create Pull Request with gh
+        env:
+          GH_TOKEN: ${{ env.GH_TOKEN }}
+        run: |
+          BASE="${ROCM_BRANCH}"
+          HEAD="${{ steps.tag.outputs.TAG }}"
+          TITLE="[AUTOGENERATED] $HEAD"
+          BODY="Merged latest changes from ${UPSTREAM_REMOTE}/${UPSTREAM_BRANCH} into ${ROCM_BRANCH} on $(date -u +'%Y-%m-%d')"
+
+          # If a PR for this head already exists, skip creating a new one
+          if gh pr list --head "$HEAD" --base "$BASE" --state all --json number | grep -q '[0-9]'; then
+            echo "PR already exists for $HEAD -> $BASE. Skipping creation."
+          else
+            gh pr create --base "$BASE" --head "$HEAD" --title "$TITLE" --body "$BODY"
+          fi
+
+      - name: Summarize
+        run: |
+          echo "::notice title=IFU Completed::Branch ${{ steps.tag.outputs.TAG }} pushed. PR created (or already existed)."
+