Index: lib/Bitcode/Reader/BitcodeReader.cpp
===================================================================
--- lib/Bitcode/Reader/BitcodeReader.cpp
+++ lib/Bitcode/Reader/BitcodeReader.cpp
@@ -5764,7 +5764,7 @@
       // module path string table entry with an empty (0) ID to take
       // ownership.
       FS->setModulePath(
-          TheIndex->addModulePath(Buffer->getBufferIdentifier(), 0));
+          TheIndex->addModulePath(SourceFileName, 0));
       static int RefListStartIndex = 4;
       int CallGraphEdgeStartIndex = RefListStartIndex + NumRefs;
       assert(Record.size() >= RefListStartIndex + NumRefs &&
@@ -5802,7 +5802,7 @@
       std::unique_ptr<GlobalVarSummary> FS =
           llvm::make_unique<GlobalVarSummary>(getDecodedLinkage(RawLinkage));
       FS->setModulePath(
-          TheIndex->addModulePath(Buffer->getBufferIdentifier(), 0));
+          TheIndex->addModulePath(SourceFileName, 0));
       for (unsigned I = 2, E = Record.size(); I != E; ++I) {
         unsigned RefValueId = Record[I];
         uint64_t RefGUID = getGUIDFromValueId(RefValueId);