Index: llvm/trunk/lib/IR/AsmWriter.cpp
===================================================================
--- llvm/trunk/lib/IR/AsmWriter.cpp
+++ llvm/trunk/lib/IR/AsmWriter.cpp
@@ -2618,8 +2618,9 @@
   unsigned i = 0;
   for (auto &ModPair : moduleVec) {
     Out << "^" << i++ << " = module: (";
-    Out << "path: \"" << ModPair.first << "\"";
-    Out << ", hash: (";
+    Out << "path: \"";
+    printEscapedString(ModPair.first, Out);
+    Out << "\", hash: (";
     FieldSeparator FS;
     for (auto Hash : ModPair.second)
       Out << FS << Hash;
Index: llvm/trunk/test/Assembler/asm-path-writer.ll
===================================================================
--- llvm/trunk/test/Assembler/asm-path-writer.ll
+++ llvm/trunk/test/Assembler/asm-path-writer.ll
@@ -0,0 +1,6 @@
+; RUN: llvm-as < %s | llvm-dis | FileCheck %s
+
+; CHECK: ^0 = module: (path: ".\5Cf4folder\5Cabc.o", hash: (0, 0, 0, 0, 0))
+
+^0 = module: (path: ".\5Cf4folder\5Cabc.o", hash: (0, 0, 0, 0, 0))
+^1 = gv: (guid: 15822663052811949562, summaries: (function: (module: ^0, flags: (linkage: external, notEligibleToImport: 0, live: 0, dsoLocal: 0), insts: 2)))