diff --git a/lib/Lex/Preprocessor.cpp b/lib/Lex/Preprocessor.cpp
index c699c4a..614530c 100644
--- a/lib/Lex/Preprocessor.cpp
+++ b/lib/Lex/Preprocessor.cpp
@@ -237,6 +237,20 @@
   llvm::errs() << (NumFastTokenPaste+NumTokenPaste)
              << " token paste (##) operations performed, "
              << NumFastTokenPaste << " on the fast path.\n";
+
+  llvm::errs() << "\nPreprocessor Memory: " << getTotalMemory() << "B total";
+
+  llvm::errs() << "\n  BumpPtr: " << BP.getTotalMemory();
+  llvm::errs() << "\n  Macro Expanded Tokens: "
+               << llvm::capacity_in_bytes(MacroExpandedTokens);
+  llvm::errs() << "\n  Predefines Buffer: " << Predefines.capacity();
+  llvm::errs() << "\n  Macros: " << llvm::capacity_in_bytes(Macros);
+  llvm::errs() << "\n  #pragma push_macro Info: "
+               << llvm::capacity_in_bytes(PragmaPushMacroInfo);
+  llvm::errs() << "\n  Poison Reasons: "
+               << llvm::capacity_in_bytes(PoisonReasons);
+  llvm::errs() << "\n  Comment Handlers: "
+               << llvm::capacity_in_bytes(CommentHandlers) << "\n";
 }
 
 Preprocessor::macro_iterator