feat: search for LLVM tools in Android SDK artifactbundle

The Android SDK may include llvm-profdata and llvm-cov that match
the LLVM version used to generate profraw files. This change searches
the Android artifactbundle for these tools before falling back to
the host Swift installation.

This should resolve the LLVM v9/v10 version mismatch error:
"raw profile version mismatch: Profile uses version = 9; expected version = 10"

Search paths in order of preference:
1. Android SDK: swift-android/bin, usr/bin, toolset/bin, ../bin
2. Host Swift: ${SWIFT_INSTALLATION}/bin (fallback)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <[email protected]>

Author: leogdion

.github/actions/swift-android-action/action.yml

@@ -605,10 +605,34 @@ runs:
           echo "  # Find the test binary" >> ${SCRIPT_FILE}
           echo "  TEST_BINARY=\$(find \${SWIFT_SDK_TARGET}/debug -name '*.xctest' | head -n 1)" >> ${SCRIPT_FILE}
           echo "  if [ -n \"\$TEST_BINARY\" ]; then" >> ${SCRIPT_FILE}
-          echo "    # Step 1: Merge profraw -> profdata (required even for single file)" >> ${SCRIPT_FILE}
-          echo "    SWIFT_PROFDATA=\"\${SWIFT_INSTALLATION}/bin/llvm-profdata\"" >> ${SCRIPT_FILE}
-          echo "    SWIFT_LLVM_COV=\"\${SWIFT_INSTALLATION}/bin/llvm-cov\"" >> ${SCRIPT_FILE}
-          echo "    if [ -f \"\$SWIFT_PROFDATA\" ] && [ -f \"\$SWIFT_LLVM_COV\" ]; then" >> ${SCRIPT_FILE}
+          echo "    # Step 1: Find LLVM tools - prefer Android SDK tools to match profraw version" >> ${SCRIPT_FILE}
+          echo "    SWIFT_PROFDATA=\"\"" >> ${SCRIPT_FILE}
+          echo "    SWIFT_LLVM_COV=\"\"" >> ${SCRIPT_FILE}
+          echo "    " >> ${SCRIPT_FILE}
+          echo "    # Search Android SDK artifactbundle for matching LLVM tools" >> ${SCRIPT_FILE}
+          echo "    if [ -n \"\${SWIFT_ARTIFACTBUNDLE_SDK_ROOT_PATH}\" ]; then" >> ${SCRIPT_FILE}
+          echo "      ANDROID_SDK_BASE=\$(dirname \"\${SWIFT_ARTIFACTBUNDLE_SDK_ROOT_PATH}\")" >> ${SCRIPT_FILE}
+          echo "      for search_path in \"\${ANDROID_SDK_BASE}/bin\" \"\${ANDROID_SDK_BASE}/usr/bin\" \"\${ANDROID_SDK_BASE}/toolset/bin\" \"\${ANDROID_SDK_BASE}/../bin\"; do" >> ${SCRIPT_FILE}
+          echo "        if [ -f \"\${search_path}/llvm-profdata\" ] && [ -f \"\${search_path}/llvm-cov\" ]; then" >> ${SCRIPT_FILE}
+          echo "          SWIFT_PROFDATA=\"\${search_path}/llvm-profdata\"" >> ${SCRIPT_FILE}
+          echo "          SWIFT_LLVM_COV=\"\${search_path}/llvm-cov\"" >> ${SCRIPT_FILE}
+          echo "          echo \"Found Android SDK LLVM tools in \${search_path}\"" >> ${SCRIPT_FILE}
+          echo "          break" >> ${SCRIPT_FILE}
+          echo "        fi" >> ${SCRIPT_FILE}
+          echo "      done" >> ${SCRIPT_FILE}
+          echo "    fi" >> ${SCRIPT_FILE}
+          echo "    " >> ${SCRIPT_FILE}
+          echo "    # Fall back to host Swift installation if not found in Android SDK" >> ${SCRIPT_FILE}
+          echo "    if [ -z \"\$SWIFT_PROFDATA\" ]; then" >> ${SCRIPT_FILE}
+          echo "      if [ -f \"\${SWIFT_INSTALLATION}/bin/llvm-profdata\" ] && [ -f \"\${SWIFT_INSTALLATION}/bin/llvm-cov\" ]; then" >> ${SCRIPT_FILE}
+          echo "        SWIFT_PROFDATA=\"\${SWIFT_INSTALLATION}/bin/llvm-profdata\"" >> ${SCRIPT_FILE}
+          echo "        SWIFT_LLVM_COV=\"\${SWIFT_INSTALLATION}/bin/llvm-cov\"" >> ${SCRIPT_FILE}
+          echo "        echo \"Using host Swift LLVM tools from \${SWIFT_INSTALLATION}/bin\"" >> ${SCRIPT_FILE}
+          echo "      fi" >> ${SCRIPT_FILE}
+          echo "    fi" >> ${SCRIPT_FILE}
+          echo "    " >> ${SCRIPT_FILE}
+          echo "    # Step 2: Process coverage if tools were found" >> ${SCRIPT_FILE}
+          echo "    if [ -n \"\$SWIFT_PROFDATA\" ] && [ -n \"\$SWIFT_LLVM_COV\" ]; then" >> ${SCRIPT_FILE}
           echo "      echo \"Step 1: Merging profraw to profdata...\"" >> ${SCRIPT_FILE}
           echo "      \"\$SWIFT_PROFDATA\" merge -sparse '${COVERAGE_DIR}/default.profraw' -o '${COVERAGE_DIR}/default.profdata' && {" >> ${SCRIPT_FILE}
           echo "        echo \"Step 2: Exporting profdata to LCOV...\"" >> ${SCRIPT_FILE}
@@ -617,7 +641,7 @@ runs:
           echo "        } || echo \"Warning: llvm-cov export failed\"" >> ${SCRIPT_FILE}
           echo "      } || echo \"Warning: llvm-profdata merge failed\"" >> ${SCRIPT_FILE}
           echo "    else" >> ${SCRIPT_FILE}
-          echo "      echo \"Warning: Swift LLVM tools not found\"" >> ${SCRIPT_FILE}
+          echo "      echo \"Warning: Swift LLVM tools not found in Android SDK or host installation\"" >> ${SCRIPT_FILE}
           echo "    fi" >> ${SCRIPT_FILE}
           echo "  else" >> ${SCRIPT_FILE}
           echo "    echo \"Warning: Test binary not found\"" >> ${SCRIPT_FILE}