diff --git a/llvm/lib/Support/StringExtras.cpp b/llvm/lib/Support/StringExtras.cpp
index 21157a1..f493315 100644
--- a/llvm/lib/Support/StringExtras.cpp
+++ b/llvm/lib/Support/StringExtras.cpp
@@ -58,6 +58,16 @@
   }
 }
 
+void llvm::PrintEscapedString(StringRef Name, raw_ostream &Out) {
+  for (unsigned i = 0, e = Name.size(); i != e; ++i) {
+    unsigned char C = Name[i];
+    if (isprint(C) && C != '\\' && C != '"')
+      Out << C;
+    else
+      Out << '\\' << hexdigit(C >> 4) << hexdigit(C & 0x0F);
+  }
+}
+
 void llvm::printLowerCase(StringRef String, raw_ostream &Out) {
   for (const char C : String)
     Out << toLower(C);