[Coverage] Clarify a function contract (NFC)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@282287 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/ProfileData/Coverage/CoverageMapping.h b/include/llvm/ProfileData/Coverage/CoverageMapping.h
index 7c4c6d61700af1ab84f11b4262996d03ac222400..3d0c3d30d79ea5a716b427c41fe5e0d40b5410b7 100644 (file)
--- a/include/llvm/ProfileData/Coverage/CoverageMapping.h
+++ b/include/llvm/ProfileData/Coverage/CoverageMapping.h
@@ -441,7 +441,8 @@ public:
   /// can't be associated with any coverage information.
   unsigned getMismatchedCount() { return MismatchedFunctionCount; }
 
-  /// \brief Returns the list of files that are covered.
+  /// \brief Returns a lexicographically sorted, unique list of files that are
+  /// covered.
   std::vector<StringRef> getUniqueSourceFiles() const;
 
   /// \brief Get the coverage for a particular file.