diff --git a/include/llvm/ProfileData/SampleProfReader.h b/include/llvm/ProfileData/SampleProfReader.h
index 6f6482747fb..5a5d4cfde22 100644
--- a/include/llvm/ProfileData/SampleProfReader.h
+++ b/include/llvm/ProfileData/SampleProfReader.h
@@ -235,6 +235,62 @@ class raw_ostream;
 
 namespace sampleprof {
 
+class SampleProfileReader;
+
+/// SampleProfileReaderItaniumRemapper remaps the profile data from a
+/// sample profile data reader, by applying a provided set of equivalences
+/// between components of the symbol names in the profile.
+class SampleProfileReaderItaniumRemapper {
+public:
+  SampleProfileReaderItaniumRemapper(std::unique_ptr<MemoryBuffer> B,
+                                     std::unique_ptr<SymbolRemappingReader> SRR,
+                                     SampleProfileReader &R)
+      : Buffer(std::move(B)), Remappings(std::move(SRR)), Reader(R) {
+    assert(Remappings && "Remappings cannot be nullptr");
+  }
+
+  /// Create a remapper from the given remapping file. The remapper will
+  /// be used for profile read in by Reader.
+  static ErrorOr<std::unique_ptr<SampleProfileReaderItaniumRemapper>>
+  create(const std::string Filename, SampleProfileReader &Reader,
+         LLVMContext &C);
+
+  /// Create a remapper from the given Buffer. The remapper will
+  /// be used for profile read in by Reader.
+  static ErrorOr<std::unique_ptr<SampleProfileReaderItaniumRemapper>>
+  create(std::unique_ptr<MemoryBuffer> &B, SampleProfileReader &Reader,
+         LLVMContext &C);
+
+  /// Apply remappings to the profile read by Reader.
+  void applyRemapping(LLVMContext &Ctx);
+
+  bool hasApplied() { return RemappingApplied; }
+
+  /// Insert function name into remapper.
+  void insert(StringRef FunctionName) { Remappings->insert(FunctionName); }
+
+  /// Query whether there is equivalent in the remapper which has been
+  /// inserted.
+  bool exist(StringRef FunctionName) {
+    return Remappings->lookup(FunctionName);
+  }
+
+  /// Return the samples collected for function \p F if remapper knows
+  /// it is present in SampleMap.
+  FunctionSamples *getSamplesFor(StringRef FunctionName);
+
+private:
+  // The buffer holding the content read from remapping file.
+  std::unique_ptr<MemoryBuffer> Buffer;
+  std::unique_ptr<SymbolRemappingReader> Remappings;
+  DenseMap<SymbolRemappingReader::Key, FunctionSamples *> SampleMap;
+  // The Reader the remapper is servicing.
+  SampleProfileReader &Reader;
+  // Indicate whether remapping has been applied to the profile read
+  // by Reader -- by calling applyRemapping.
+  bool RemappingApplied = false;
+};
+
 /// Sample-based profile reader.
 ///
 /// Each profile contains sample counts for all the functions
@@ -273,8 +329,17 @@ public:
   /// Read and validate the file header.
   virtual std::error_code readHeader() = 0;
 
-  /// Read sample profiles from the associated file.
-  virtual std::error_code read() = 0;
+  /// The interface to read sample profiles from the associated file.
+  std::error_code read() {
+    if (std::error_code EC = readImpl())
+      return EC;
+    if (Remapper)
+      Remapper->applyRemapping(Ctx);
+    return sampleprof_error::success;
+  }
+
+  /// The implementaion to read sample profiles from the associated file.
+  virtual std::error_code readImpl() = 0;
 
   /// Print the profile for \p FName on stream \p OS.
   void dumpFunctionProfile(StringRef FName, raw_ostream &OS = dbgs());
@@ -295,6 +360,10 @@ public:
 
   /// Return the samples collected for function \p F.
   virtual FunctionSamples *getSamplesFor(StringRef Fname) {
+    if (Remapper) {
+      if (auto FS = Remapper->getSamplesFor(Fname))
+        return FS;
+    }
     std::string FGUID;
     Fname = getRepInFormat(Fname, getFormat(), FGUID);
     auto It = Profiles.find(Fname);
@@ -313,18 +382,24 @@ public:
   }
 
   /// Create a sample profile reader appropriate to the file format.
+  /// Create a remapper underlying if RemapFilename is not empty.
   static ErrorOr<std::unique_ptr<SampleProfileReader>>
-  create(const Twine &Filename, LLVMContext &C);
+  create(const std::string Filename, LLVMContext &C,
+         const std::string RemapFilename = "");
 
   /// Create a sample profile reader from the supplied memory buffer.
+  /// Create a remapper underlying if RemapFilename is not empty.
   static ErrorOr<std::unique_ptr<SampleProfileReader>>
-  create(std::unique_ptr<MemoryBuffer> &B, LLVMContext &C);
+  create(std::unique_ptr<MemoryBuffer> &B, LLVMContext &C,
+         const std::string RemapFilename = "");
 
   /// Return the profile summary.
-  ProfileSummary &getSummary() { return *(Summary.get()); }
+  ProfileSummary &getSummary() const { return *(Summary.get()); }
+
+  MemoryBuffer *getBuffer() const { return Buffer.get(); }
 
   /// \brief Return the profile format.
-  SampleProfileFormat getFormat() { return Format; }
+  SampleProfileFormat getFormat() const { return Format; }
 
   virtual std::unique_ptr<ProfileSymbolList> getProfileSymbolList() {
     return nullptr;
@@ -361,6 +436,8 @@ protected:
   /// Compute summary for this profile.
   void computeSummary();
 
+  std::unique_ptr<SampleProfileReaderItaniumRemapper> Remapper;
+
   /// \brief The format of sample.
   SampleProfileFormat Format = SPF_None;
 };
@@ -374,7 +451,7 @@ public:
   std::error_code readHeader() override { return sampleprof_error::success; }
 
   /// Read sample profiles from the associated file.
-  std::error_code read() override;
+  std::error_code readImpl() override;
 
   /// Return true if \p Buffer is in the format supported by this class.
   static bool hasFormat(const MemoryBuffer &Buffer);
@@ -390,7 +467,7 @@ public:
   virtual std::error_code readHeader() override;
 
   /// Read sample profiles from the associated file.
-  std::error_code read() override;
+  std::error_code readImpl() override;
 
   /// It includes all the names that have samples either in outline instance
   /// or inline instance.
@@ -512,7 +589,7 @@ public:
       : SampleProfileReaderBinary(std::move(B), C, Format) {}
 
   /// Read sample profiles in extensible format from the associated file.
-  std::error_code read() override;
+  std::error_code readImpl() override;
 
   /// Get the total size of all \p Type sections.
   uint64_t getSectionSize(SecType Type);
@@ -581,7 +658,7 @@ public:
   static bool hasFormat(const MemoryBuffer &Buffer);
 
   /// Read samples only for functions to use.
-  std::error_code read() override;
+  std::error_code readImpl() override;
 
   /// Collect functions to be used when compiling Module \p M.
   void collectFuncsFrom(const Module &M) override;
@@ -612,7 +689,7 @@ public:
   std::error_code readHeader() override;
 
   /// Read sample profiles from the associated file.
-  std::error_code read() override;
+  std::error_code readImpl() override;
 
   /// Return true if \p Buffer is in the format supported by this class.
   static bool hasFormat(const MemoryBuffer &Buffer);
@@ -640,44 +717,6 @@ protected:
   static const uint32_t GCOVTagAFDOFunction = 0xac000000;
 };
 
-/// A profile data reader proxy that remaps the profile data from another
-/// sample profile data reader, by applying a provided set of equivalences
-/// between components of the symbol names in the profile.
-class SampleProfileReaderItaniumRemapper : public SampleProfileReader {
-public:
-  SampleProfileReaderItaniumRemapper(
-      std::unique_ptr<MemoryBuffer> B, LLVMContext &C,
-      std::unique_ptr<SampleProfileReader> Underlying)
-      : SampleProfileReader(std::move(B), C, Underlying->getFormat()) {
-    Profiles = std::move(Underlying->getProfiles());
-    Summary = takeSummary(*Underlying);
-    // Keep the underlying reader alive; the profile data may contain
-    // StringRefs referencing names in its name table.
-    UnderlyingReader = std::move(Underlying);
-  }
-
-  /// Create a remapped sample profile from the given remapping file and
-  /// underlying samples.
-  static ErrorOr<std::unique_ptr<SampleProfileReader>>
-  create(const Twine &Filename, LLVMContext &C,
-         std::unique_ptr<SampleProfileReader> Underlying);
-
-  /// Read and validate the file header.
-  std::error_code readHeader() override { return sampleprof_error::success; }
-
-  /// Read remapping file and apply it to the sample profile.
-  std::error_code read() override;
-
-  /// Return the samples collected for function \p F.
-  FunctionSamples *getSamplesFor(StringRef FunctionName) override;
-  using SampleProfileReader::getSamplesFor;
-
-private:
-  SymbolRemappingReader Remappings;
-  DenseMap<SymbolRemappingReader::Key, FunctionSamples*> SampleMap;
-  std::unique_ptr<SampleProfileReader> UnderlyingReader;
-};
-
 } // end namespace sampleprof
 
 } // end namespace llvm
diff --git a/lib/ProfileData/SampleProfReader.cpp b/lib/ProfileData/SampleProfReader.cpp
index cf3e56728e2..001aafce7bf 100644
--- a/lib/ProfileData/SampleProfReader.cpp
+++ b/lib/ProfileData/SampleProfReader.cpp
@@ -191,7 +191,7 @@ static bool ParseLine(const StringRef &Input, bool &IsCallsite, uint32_t &Depth,
 /// the expected format.
 ///
 /// \returns true if the file was loaded successfully, false otherwise.
-std::error_code SampleProfileReaderText::read() {
+std::error_code SampleProfileReaderText::readImpl() {
   line_iterator LineIt(*Buffer, /*SkipBlanks=*/true, '#');
   sampleprof_error Result = sampleprof_error::success;
 
@@ -461,7 +461,7 @@ SampleProfileReaderBinary::readFuncProfile(const uint8_t *Start) {
   return sampleprof_error::success;
 }
 
-std::error_code SampleProfileReaderBinary::read() {
+std::error_code SampleProfileReaderBinary::readImpl() {
   while (!at_eof()) {
     if (std::error_code EC = readFuncProfile(Data))
       return EC;
@@ -540,15 +540,23 @@ std::error_code SampleProfileReaderExtBinary::readFuncProfiles() {
     return sampleprof_error::success;
   }
 
-  for (auto Name : FuncsToUse) {
-    auto iter = FuncOffsetTable.find(Name);
-    if (iter == FuncOffsetTable.end())
+  if (Remapper) {
+    for (auto Name : FuncsToUse) {
+      Remapper->insert(Name);
+    }
+  }
+
+  for (auto NameOffset : FuncOffsetTable) {
+    auto FuncName = NameOffset.first;
+    if (!FuncsToUse.count(FuncName) &&
+        (!Remapper || !Remapper->exist(FuncName)))
       continue;
-    const uint8_t *FuncProfileAddr = Start + iter->second;
+    const uint8_t *FuncProfileAddr = Start + NameOffset.second;
     assert(FuncProfileAddr < End && "out of LBRProfile section");
     if (std::error_code EC = readFuncProfile(FuncProfileAddr))
       return EC;
   }
+
   Data = End;
   return sampleprof_error::success;
 }
@@ -593,7 +601,7 @@ std::error_code SampleProfileReaderExtBinaryBase::decompressSection(
   return sampleprof_error::success;
 }
 
-std::error_code SampleProfileReaderExtBinaryBase::read() {
+std::error_code SampleProfileReaderExtBinaryBase::readImpl() {
   const uint8_t *BufStart =
       reinterpret_cast<const uint8_t *>(Buffer->getBufferStart());
 
@@ -635,7 +643,7 @@ std::error_code SampleProfileReaderExtBinaryBase::read() {
   return sampleprof_error::success;
 }
 
-std::error_code SampleProfileReaderCompactBinary::read() {
+std::error_code SampleProfileReaderCompactBinary::readImpl() {
   std::vector<uint64_t> OffsetsToUse;
   if (UseAllFuncs) {
     for (auto FuncEntry : FuncOffsetTable) {
@@ -1184,7 +1192,7 @@ std::error_code SampleProfileReaderGCC::readOneFunctionProfile(
 ///
 /// This format is generated by the Linux Perf conversion tool at
 /// https://github.com/google/autofdo.
-std::error_code SampleProfileReaderGCC::read() {
+std::error_code SampleProfileReaderGCC::readImpl() {
   // Read the string table.
   if (std::error_code EC = readNameTable())
     return EC;
@@ -1201,38 +1209,31 @@ bool SampleProfileReaderGCC::hasFormat(const MemoryBuffer &Buffer) {
   return Magic == "adcg*704";
 }
 
-std::error_code SampleProfileReaderItaniumRemapper::read() {
-  // If the underlying data is in compact format, we can't remap it because
+void SampleProfileReaderItaniumRemapper::applyRemapping(LLVMContext &Ctx) {
+  // If the reader is in compact format, we can't remap it because
   // we don't know what the original function names were.
-  if (getFormat() == SPF_Compact_Binary) {
+  if (Reader.getFormat() == SPF_Compact_Binary) {
     Ctx.diagnose(DiagnosticInfoSampleProfile(
-        Buffer->getBufferIdentifier(),
+        Reader.getBuffer()->getBufferIdentifier(),
         "Profile data remapping cannot be applied to profile data "
         "in compact format (original mangled names are not available).",
         DS_Warning));
-    return sampleprof_error::success;
+    return;
   }
 
-  if (Error E = Remappings.read(*Buffer)) {
-    handleAllErrors(
-        std::move(E), [&](const SymbolRemappingParseError &ParseError) {
-          reportError(ParseError.getLineNum(), ParseError.getMessage());
-        });
-    return sampleprof_error::malformed;
-  }
-
-  for (auto &Sample : getProfiles())
-    if (auto Key = Remappings.insert(Sample.first()))
+  assert(Remappings && "should be initialized while creating remapper");
+  for (auto &Sample : Reader.getProfiles())
+    if (auto Key = Remappings->insert(Sample.first()))
       SampleMap.insert({Key, &Sample.second});
 
-  return sampleprof_error::success;
+  RemappingApplied = true;
 }
 
 FunctionSamples *
 SampleProfileReaderItaniumRemapper::getSamplesFor(StringRef Fname) {
-  if (auto Key = Remappings.lookup(Fname))
+  if (auto Key = Remappings->lookup(Fname))
     return SampleMap.lookup(Key);
-  return SampleProfileReader::getSamplesFor(Fname);
+  return nullptr;
 }
 
 /// Prepare a memory buffer for the contents of \p Filename.
@@ -1258,13 +1259,16 @@ setupMemoryBuffer(const Twine &Filename) {
 ///
 /// \param C The LLVM context to use to emit diagnostics.
 ///
+/// \param RemapFilename The file used for profile remapping.
+///
 /// \returns an error code indicating the status of the created reader.
 ErrorOr<std::unique_ptr<SampleProfileReader>>
-SampleProfileReader::create(const Twine &Filename, LLVMContext &C) {
+SampleProfileReader::create(const std::string Filename, LLVMContext &C,
+                            const std::string RemapFilename) {
   auto BufferOrError = setupMemoryBuffer(Filename);
   if (std::error_code EC = BufferOrError.getError())
     return EC;
-  return create(BufferOrError.get(), C);
+  return create(BufferOrError.get(), C, RemapFilename);
 }
 
 /// Create a sample profile remapper from the given input, to remap the
@@ -1272,20 +1276,48 @@ SampleProfileReader::create(const Twine &Filename, LLVMContext &C) {
 ///
 /// \param Filename The file to open.
 ///
+/// \param Reader The profile reader the remapper is going to be applied to.
+///
 /// \param C The LLVM context to use to emit diagnostics.
 ///
-/// \param Underlying The underlying profile data reader to remap.
-///
 /// \returns an error code indicating the status of the created reader.
-ErrorOr<std::unique_ptr<SampleProfileReader>>
-SampleProfileReaderItaniumRemapper::create(
-    const Twine &Filename, LLVMContext &C,
-    std::unique_ptr<SampleProfileReader> Underlying) {
+ErrorOr<std::unique_ptr<SampleProfileReaderItaniumRemapper>>
+SampleProfileReaderItaniumRemapper::create(const std::string Filename,
+                                           SampleProfileReader &Reader,
+                                           LLVMContext &C) {
   auto BufferOrError = setupMemoryBuffer(Filename);
   if (std::error_code EC = BufferOrError.getError())
     return EC;
+  return create(BufferOrError.get(), Reader, C);
+}
+
+/// Create a sample profile remapper from the given input, to remap the
+/// function names in the given profile data.
+///
+/// \param B The memory buffer to create the reader from (assumes ownership).
+///
+/// \param C The LLVM context to use to emit diagnostics.
+///
+/// \param Reader The profile reader the remapper is going to be applied to.
+///
+/// \returns an error code indicating the status of the created reader.
+ErrorOr<std::unique_ptr<SampleProfileReaderItaniumRemapper>>
+SampleProfileReaderItaniumRemapper::create(std::unique_ptr<MemoryBuffer> &B,
+                                           SampleProfileReader &Reader,
+                                           LLVMContext &C) {
+  auto Remappings = std::make_unique<SymbolRemappingReader>();
+  if (Error E = Remappings->read(*B.get())) {
+    handleAllErrors(
+        std::move(E), [&](const SymbolRemappingParseError &ParseError) {
+          C.diagnose(DiagnosticInfoSampleProfile(B->getBufferIdentifier(),
+                                                 ParseError.getLineNum(),
+                                                 ParseError.getMessage()));
+        });
+    return sampleprof_error::malformed;
+  }
+
   return std::make_unique<SampleProfileReaderItaniumRemapper>(
-      std::move(BufferOrError.get()), C, std::move(Underlying));
+      std::move(B), std::move(Remappings), Reader);
 }
 
 /// Create a sample profile reader based on the format of the input data.
@@ -1294,9 +1326,12 @@ SampleProfileReaderItaniumRemapper::create(
 ///
 /// \param C The LLVM context to use to emit diagnostics.
 ///
+/// \param RemapFilename The file used for profile remapping.
+///
 /// \returns an error code indicating the status of the created reader.
 ErrorOr<std::unique_ptr<SampleProfileReader>>
-SampleProfileReader::create(std::unique_ptr<MemoryBuffer> &B, LLVMContext &C) {
+SampleProfileReader::create(std::unique_ptr<MemoryBuffer> &B, LLVMContext &C,
+                            const std::string RemapFilename) {
   std::unique_ptr<SampleProfileReader> Reader;
   if (SampleProfileReaderRawBinary::hasFormat(*B))
     Reader.reset(new SampleProfileReaderRawBinary(std::move(B), C));
@@ -1311,6 +1346,17 @@ SampleProfileReader::create(std::unique_ptr<MemoryBuffer> &B, LLVMContext &C) {
   else
     return sampleprof_error::unrecognized_format;
 
+  if (!RemapFilename.empty()) {
+    auto ReaderOrErr =
+        SampleProfileReaderItaniumRemapper::create(RemapFilename, *Reader, C);
+    if (std::error_code EC = ReaderOrErr.getError()) {
+      std::string Msg = "Could not create remapper: " + EC.message();
+      C.diagnose(DiagnosticInfoSampleProfile(RemapFilename, Msg));
+      return EC;
+    }
+    Reader->Remapper = std::move(ReaderOrErr.get());
+  }
+
   FunctionSamples::Format = Reader->getFormat();
   if (std::error_code EC = Reader->readHeader()) {
     return EC;
diff --git a/lib/Transforms/IPO/SampleProfile.cpp b/lib/Transforms/IPO/SampleProfile.cpp
index aa22ac3b449..6184681db8a 100644
--- a/lib/Transforms/IPO/SampleProfile.cpp
+++ b/lib/Transforms/IPO/SampleProfile.cpp
@@ -1675,7 +1675,10 @@ INITIALIZE_PASS_END(SampleProfileLoaderLegacyPass, "sample-profile",
 
 bool SampleProfileLoader::doInitialization(Module &M) {
   auto &Ctx = M.getContext();
-  auto ReaderOrErr = SampleProfileReader::create(Filename, Ctx);
+
+  std::unique_ptr<SampleProfileReaderItaniumRemapper> RemapReader;
+  auto ReaderOrErr =
+      SampleProfileReader::create(Filename, Ctx, RemappingFilename);
   if (std::error_code EC = ReaderOrErr.getError()) {
     std::string Msg = "Could not open profile: " + EC.message();
     Ctx.diagnose(DiagnosticInfoSampleProfile(Filename, Msg));
@@ -1695,20 +1698,6 @@ bool SampleProfileLoader::doInitialization(Module &M) {
       NamesInProfile.insert(NameTable->begin(), NameTable->end());
   }
 
-  if (!RemappingFilename.empty()) {
-    // Apply profile remappings to the loaded profile data if requested.
-    // For now, we only support remapping symbols encoded using the Itanium
-    // C++ ABI's name mangling scheme.
-    ReaderOrErr = SampleProfileReaderItaniumRemapper::create(
-        RemappingFilename, Ctx, std::move(Reader));
-    if (std::error_code EC = ReaderOrErr.getError()) {
-      std::string Msg = "Could not open profile remapping file: " + EC.message();
-      Ctx.diagnose(DiagnosticInfoSampleProfile(Filename, Msg));
-      return false;
-    }
-    Reader = std::move(ReaderOrErr.get());
-    ProfileIsValid = (Reader->read() == sampleprof_error::success);
-  }
   return true;
 }
 
diff --git a/test/Transforms/SampleProfile/remap.ll b/test/Transforms/SampleProfile/remap.ll
index 206962a3bef..af37ddae151 100644
--- a/test/Transforms/SampleProfile/remap.ll
+++ b/test/Transforms/SampleProfile/remap.ll
@@ -1,5 +1,9 @@
 ; RUN: opt %s -passes=sample-profile -sample-profile-file=%S/Inputs/remap.prof -sample-profile-remapping-file=%S/Inputs/remap.map | opt -analyze -branch-prob | FileCheck %s
-
+;
+; Check whether profile remapping work with loading profile on demand used by extbinary format profile.
+; RUN: llvm-profdata merge -sample -extbinary %S/Inputs/remap.prof -o %t.extbinary.afdo
+; RUN: opt %s -passes=sample-profile -sample-profile-file=%S/Inputs/remap.prof -sample-profile-remapping-file=%S/Inputs/remap.map | opt -analyze -branch-prob | FileCheck %s
+;
 ; Reduced from branch.ll
 
 declare i1 @foo()
diff --git a/unittests/ProfileData/SampleProfTest.cpp b/unittests/ProfileData/SampleProfTest.cpp
index 59ed19d292e..816f403f570 100644
--- a/unittests/ProfileData/SampleProfTest.cpp
+++ b/unittests/ProfileData/SampleProfTest.cpp
@@ -50,13 +50,31 @@ struct SampleProfTest : ::testing::Test {
     Writer = std::move(WriterOrErr.get());
   }
 
-  void readProfile(const Module &M, StringRef Profile) {
-    auto ReaderOrErr = SampleProfileReader::create(Profile, Context);
+  void readProfile(const Module &M, StringRef Profile,
+                   StringRef RemapFile = "") {
+    auto ReaderOrErr = SampleProfileReader::create(Profile, Context, RemapFile);
     ASSERT_TRUE(NoError(ReaderOrErr.getError()));
     Reader = std::move(ReaderOrErr.get());
     Reader->collectFuncsFrom(M);
   }
 
+  void createRemapFile(SmallVectorImpl<char> &RemapPath, StringRef &RemapFile) {
+    std::error_code EC =
+        llvm::sys::fs::createTemporaryFile("remapfile", "", RemapPath);
+    ASSERT_TRUE(NoError(EC));
+    RemapFile = StringRef(RemapPath.data(), RemapPath.size());
+
+    std::unique_ptr<raw_fd_ostream> OS(
+        new raw_fd_ostream(RemapFile, EC, sys::fs::OF_None));
+    *OS << R"(
+      # Types 'int' and 'long' are equivalent
+      type i l
+      # Function names 'foo' and 'faux' are equivalent
+      name 3foo 4faux
+    )";
+    OS->close();
+  }
+
   void testRoundTrip(SampleProfileFormat Format, bool Remap) {
     SmallVector<char, 128> ProfilePath;
     ASSERT_TRUE(NoError(llvm::sys::fs::createTemporaryFile("profile", "", ProfilePath)));
@@ -93,16 +111,34 @@ struct SampleProfTest : ::testing::Test {
     BazSamples.addHeadSamples(1257);
     BazSamples.addBodySamples(1, 0, 12557);
 
-    Module M("my_module", Context);
-    FunctionType *fn_type =
-        FunctionType::get(Type::getVoidTy(Context), {}, false);
-    M.getOrInsertFunction(FooName, fn_type);
-    M.getOrInsertFunction(BarName, fn_type);
+    StringRef BooName("_Z3booi");
+    FunctionSamples BooSamples;
+    BooSamples.setName(BooName);
+    BooSamples.addTotalSamples(1232);
+    BooSamples.addHeadSamples(1);
+    BooSamples.addBodySamples(1, 0, 1232);
 
     StringMap<FunctionSamples> Profiles;
     Profiles[FooName] = std::move(FooSamples);
     Profiles[BarName] = std::move(BarSamples);
     Profiles[BazName] = std::move(BazSamples);
+    Profiles[BooName] = std::move(BooSamples);
+
+    Module M("my_module", Context);
+    FunctionType *fn_type =
+        FunctionType::get(Type::getVoidTy(Context), {}, false);
+
+    SmallVector<char, 128> RemapPath;
+    StringRef RemapFile;
+    if (Remap) {
+      createRemapFile(RemapPath, RemapFile);
+      FooName = "_Z4fauxi";
+      BarName = "_Z3barl";
+    }
+
+    M.getOrInsertFunction(FooName, fn_type);
+    M.getOrInsertFunction(BarName, fn_type);
+    M.getOrInsertFunction(BooName, fn_type);
 
     ProfileSymbolList List;
     if (Format == SampleProfileFormat::SPF_Ext_Binary) {
@@ -117,8 +153,7 @@ struct SampleProfTest : ::testing::Test {
 
     Writer->getOutputStream().flush();
 
-    readProfile(M, Profile);
-
+    readProfile(M, Profile, RemapFile);
     EC = Reader->read();
     ASSERT_TRUE(NoError(EC));
 
@@ -129,22 +164,6 @@ struct SampleProfTest : ::testing::Test {
       ReaderList->contains("moo");
     }
 
-    if (Remap) {
-      auto MemBuffer = llvm::MemoryBuffer::getMemBuffer(R"(
-        # Types 'int' and 'long' are equivalent
-        type i l
-        # Function names 'foo' and 'faux' are equivalent
-        name 3foo 4faux
-      )");
-      Reader.reset(new SampleProfileReaderItaniumRemapper(
-          std::move(MemBuffer), Context, std::move(Reader)));
-      FooName = "_Z4fauxi";
-      BarName = "_Z3barl";
-
-      EC = Reader->read();
-      ASSERT_TRUE(NoError(EC));
-    }
-
     FunctionSamples *ReadFooSamples = Reader->getSamplesFor(FooName);
     ASSERT_TRUE(ReadFooSamples != nullptr);
     if (Format != SampleProfileFormat::SPF_Compact_Binary) {
@@ -171,13 +190,17 @@ struct SampleProfTest : ::testing::Test {
     if (Format == SampleProfileFormat::SPF_Ext_Binary ||
         Format == SampleProfileFormat::SPF_Compact_Binary) {
       ASSERT_TRUE(ReadBazSamples == nullptr);
-      ASSERT_EQ(2u, Reader->getProfiles().size());
+      ASSERT_EQ(3u, Reader->getProfiles().size());
     } else {
       ASSERT_TRUE(ReadBazSamples != nullptr);
       ASSERT_EQ(12557u, ReadBazSamples->getTotalSamples());
-      ASSERT_EQ(3u, Reader->getProfiles().size());
+      ASSERT_EQ(4u, Reader->getProfiles().size());
     }
 
+    FunctionSamples *ReadBooSamples = Reader->getSamplesFor(BooName);
+    ASSERT_TRUE(ReadBooSamples != nullptr);
+    ASSERT_EQ(1232u, ReadBooSamples->getTotalSamples());
+
     std::string MconstructGUID;
     StringRef MconstructRep =
         getRepInFormat(MconstructName, Format, MconstructGUID);
@@ -189,9 +212,9 @@ struct SampleProfTest : ::testing::Test {
 
     auto VerifySummary = [](ProfileSummary &Summary) mutable {
       ASSERT_EQ(ProfileSummary::PSK_Sample, Summary.getKind());
-      ASSERT_EQ(136160u, Summary.getTotalCount());
-      ASSERT_EQ(7u, Summary.getNumCounts());
-      ASSERT_EQ(3u, Summary.getNumFunctions());
+      ASSERT_EQ(137392u, Summary.getTotalCount());
+      ASSERT_EQ(8u, Summary.getNumCounts());
+      ASSERT_EQ(4u, Summary.getNumFunctions());
       ASSERT_EQ(1437u, Summary.getMaxFunctionCount());
       ASSERT_EQ(60351u, Summary.getMaxCount());