more patterns

Author: MaskRay

.github/new-prs-labeler.yml

@@ -618,9 +618,11 @@ llvm:adt:
 llvm:support:
   - llvm/**/Support/**
 
-# Skip llvm/test/MC, which includes target-specific directories
+# Skip llvm/test/MC and llvm/unittests/MC, which includes target-specific directories.
 llvm:mc:
+  - llvm/include/llvm/MC/**
   - llvm/lib/MC/**
+  - llvm/tools/llvm-mc/**
 
 llvm:transforms:
   - llvm/lib/Transforms/**