Merge profraw files before uploading.

Author: ysiraichi

.github/workflows/_build_torch_xla.yml

@@ -35,7 +35,6 @@ jobs:
       BAZEL_REMOTE_CACHE: ${{ github.event_name == 'push' || github.event.pull_request.head.repo.full_name == github.repository }}
       BAZEL_JOBS: ''  # Let bazel decide the parallelism based on the number of CPUs.
       BUILD_CPP_TESTS: 1
-      GCNO_OUTPUT_DIR: "/tmp/torch-xla-gcno"
     steps:
       # Need to check out local composite actions before using them
       # https://github.com/orgs/community/discussions/11771

.github/workflows/_test.yml

@@ -155,7 +155,12 @@ jobs:
         env:
           COVERAGE_FILE: "${{ env.COVERAGE_DIR }}/py-coverage"
           LLVM_PROFILE_FILE: "${{ env.COVERAGE_DIR }}/cpp-coverage/data-%p.profraw"
-        run: pytorch/xla/.github/scripts/run_tests.sh pytorch/ pytorch/xla/ $USE_COVERAGE
+        run: |
+          pytorch/xla/.github/scripts/run_tests.sh pytorch/ pytorch/xla/ $USE_COVERAGE
+          # Merge the profraw files, so that they take less space.
+          llvm-profdata-17 merge $COVERAGE_DIR/cpp-coverage/*.profraw -o $COVERAGE_DIR/cpp-coverage.profdata
+          # Remove the collected raw coverage files.
+          rm -r $COVERAGE_DIR/cpp-coverage
       - name: Upload coverage results
         uses: actions/upload-artifact@v4
         with:

.github/workflows/_test_requiring_torch_cuda.yml

@@ -129,8 +129,13 @@ jobs:
           run_coverage pytorch/xla/test/test_operations.py -v
           run_coverage pytorch/xla/test/dynamo/test_dynamo.py -v
 
+          # Combine all Python coverage files.
           coverage combine
           coverage lcov --omit="/tmp/*" --ignore-errors -o $COVERAGE_FILE.info
+          # Merge the profraw files, so that they take less space.
+          llvm-profdata-17 merge $COVERAGE_DIR/cpp-coverage/*.profraw -o $COVERAGE_DIR/cpp-coverage.profdata
+          # Remove the collected raw coverage files.
+          rm -r $COVERAGE_DIR/cpp-coverage
         if: ${{ matrix.run_python_tests }}
       - name: Triton Tests
         shell: bash
@@ -153,8 +158,13 @@ jobs:
 
           run_coverage pytorch/xla/test/test_triton.py
 
+          # Combine all Python coverage files.
           coverage combine
           coverage lcov --omit="/tmp/*" --ignore-errors -o $COVERAGE_FILE.info
+          # Merge the profraw files, so that they take less space.
+          llvm-profdata-17 merge $COVERAGE_DIR/cpp-coverage/*.profraw -o $COVERAGE_DIR/cpp-coverage.profdata
+          # Remove the collected raw coverage files.
+          rm -r $COVERAGE_DIR/cpp-coverage
         if: ${{ matrix.run_triton_tests }}
       - name: Upload coverage results
         uses: actions/upload-artifact@v4

.github/workflows/_tpu_ci.yml

@@ -63,11 +63,10 @@ jobs:
         run: |
           cd pytorch/xla
           ${{ matrix.test_script }}
-      - name: Report no code changes
-        # Only report the first instance
-        if: inputs.has_code_changes == 'false' && strategy.job-index == 0
-        run: |
-          echo "No code changes were detected that require running the full test suite."
+          # Merge the profraw files, so that they take less space.
+          llvm-profdata-17 merge $COVERAGE_DIR/cpp-coverage/*.profraw -o $COVERAGE_DIR/cpp-coverage.profdata
+          # Remove the collected raw coverage files.
+          rm -r $COVERAGE_DIR/cpp-coverage
       - name: Upload coverage results
         uses: actions/upload-artifact@v4
         with: