diff --git a/llvm/include/llvm/DebugInfo/PDB/DIA/DIASession.h b/llvm/include/llvm/DebugInfo/PDB/DIA/DIASession.h
index 9a8600fb85ec..d887e9033f33 100644
--- a/llvm/include/llvm/DebugInfo/PDB/DIA/DIASession.h
+++ b/llvm/include/llvm/DebugInfo/PDB/DIA/DIASession.h
@@ -32,9 +32,25 @@ public:
   std::unique_ptr<PDBSymbol>
   findSymbolByAddress(uint64_t Address, PDB_SymType Type) const override;
 
+  std::unique_ptr<IPDBEnumLineNumbers>
+  findLineNumbers(const PDBSymbolCompiland &Compiland,
+                  const IPDBSourceFile &File) const override;
   std::unique_ptr<IPDBEnumLineNumbers>
   findLineNumbersByAddress(uint64_t Address, uint32_t Length) const override;
 
+  std::unique_ptr<IPDBEnumSourceFiles>
+  findSourceFiles(const PDBSymbolCompiland *Compiland, llvm::StringRef Pattern,
+                  PDB_NameSearchFlags Flags) const override;
+  std::unique_ptr<IPDBSourceFile>
+  findOneSourceFile(const PDBSymbolCompiland *Compiland,
+                    llvm::StringRef Pattern,
+                    PDB_NameSearchFlags Flags) const override;
+  std::unique_ptr<IPDBEnumChildren<PDBSymbolCompiland>>
+  findCompilandsForSourceFile(llvm::StringRef Pattern,
+                              PDB_NameSearchFlags Flags) const override;
+  std::unique_ptr<PDBSymbolCompiland>
+  findOneCompilandForSourceFile(llvm::StringRef Pattern,
+                                PDB_NameSearchFlags Flags) const override;
   std::unique_ptr<IPDBEnumSourceFiles> getAllSourceFiles() const override;
   std::unique_ptr<IPDBEnumSourceFiles> getSourceFilesForCompiland(
       const PDBSymbolCompiland &Compiland) const override;
diff --git a/llvm/include/llvm/DebugInfo/PDB/DIA/DIASourceFile.h b/llvm/include/llvm/DebugInfo/PDB/DIA/DIASourceFile.h
index c424e27493c1..66b0c7db93f8 100644
--- a/llvm/include/llvm/DebugInfo/PDB/DIA/DIASourceFile.h
+++ b/llvm/include/llvm/DebugInfo/PDB/DIA/DIASourceFile.h
@@ -25,7 +25,10 @@ public:
   uint32_t getUniqueId() const override;
   std::string getChecksum() const override;
   PDB_Checksum getChecksumType() const override;
-  std::unique_ptr<IPDBEnumSymbols> getCompilands() const override;
+  std::unique_ptr<IPDBEnumChildren<PDBSymbolCompiland>>
+  getCompilands() const override;
+
+  CComPtr<IDiaSourceFile> getDiaFile() const { return SourceFile; }
 
 private:
   const DIASession &Session;
diff --git a/llvm/include/llvm/DebugInfo/PDB/IPDBSession.h b/llvm/include/llvm/DebugInfo/PDB/IPDBSession.h
index a130a38a6538..b6bccbeb8842 100644
--- a/llvm/include/llvm/DebugInfo/PDB/IPDBSession.h
+++ b/llvm/include/llvm/DebugInfo/PDB/IPDBSession.h
@@ -45,9 +45,27 @@ public:
 
   virtual std::unique_ptr<PDBSymbol>
   findSymbolByAddress(uint64_t Address, PDB_SymType Type) const = 0;
+
+  virtual std::unique_ptr<IPDBEnumLineNumbers>
+  findLineNumbers(const PDBSymbolCompiland &Compiland,
+                  const IPDBSourceFile &File) const = 0;
   virtual std::unique_ptr<IPDBEnumLineNumbers>
   findLineNumbersByAddress(uint64_t Address, uint32_t Length) const = 0;
 
+  virtual std::unique_ptr<IPDBEnumSourceFiles>
+  findSourceFiles(const PDBSymbolCompiland *Compiland, llvm::StringRef Pattern,
+                  PDB_NameSearchFlags Flags) const = 0;
+  virtual std::unique_ptr<IPDBSourceFile>
+  findOneSourceFile(const PDBSymbolCompiland *Compiland,
+                    llvm::StringRef Pattern,
+                    PDB_NameSearchFlags Flags) const = 0;
+  virtual std::unique_ptr<IPDBEnumChildren<PDBSymbolCompiland>>
+  findCompilandsForSourceFile(llvm::StringRef Pattern,
+                              PDB_NameSearchFlags Flags) const = 0;
+  virtual std::unique_ptr<PDBSymbolCompiland>
+  findOneCompilandForSourceFile(llvm::StringRef Pattern,
+                                PDB_NameSearchFlags Flags) const = 0;
+
   virtual std::unique_ptr<IPDBEnumSourceFiles> getAllSourceFiles() const = 0;
   virtual std::unique_ptr<IPDBEnumSourceFiles>
   getSourceFilesForCompiland(const PDBSymbolCompiland &Compiland) const = 0;
diff --git a/llvm/include/llvm/DebugInfo/PDB/IPDBSourceFile.h b/llvm/include/llvm/DebugInfo/PDB/IPDBSourceFile.h
index 55000eff02f0..3e4394387105 100644
--- a/llvm/include/llvm/DebugInfo/PDB/IPDBSourceFile.h
+++ b/llvm/include/llvm/DebugInfo/PDB/IPDBSourceFile.h
@@ -30,7 +30,8 @@ public:
   virtual uint32_t getUniqueId() const = 0;
   virtual std::string getChecksum() const = 0;
   virtual PDB_Checksum getChecksumType() const = 0;
-  virtual std::unique_ptr<IPDBEnumSymbols> getCompilands() const = 0;
+  virtual std::unique_ptr<IPDBEnumChildren<PDBSymbolCompiland>>
+  getCompilands() const = 0;
 };
 }
 
diff --git a/llvm/include/llvm/DebugInfo/PDB/PDBSymbolCompiland.h b/llvm/include/llvm/DebugInfo/PDB/PDBSymbolCompiland.h
index 7a2430df695d..ade807f64630 100644
--- a/llvm/include/llvm/DebugInfo/PDB/PDBSymbolCompiland.h
+++ b/llvm/include/llvm/DebugInfo/PDB/PDBSymbolCompiland.h
@@ -30,7 +30,8 @@ public:
   FORWARD_SYMBOL_METHOD(getLexicalParentId)
   FORWARD_SYMBOL_METHOD(getLibraryName)
   FORWARD_SYMBOL_METHOD(getName)
-  FORWARD_SYMBOL_METHOD(getSourceFileName)
+
+  std::string getSourceFileName() const;
 };
 }
 
diff --git a/llvm/lib/DebugInfo/PDB/DIA/DIASession.cpp b/llvm/lib/DebugInfo/PDB/DIA/DIASession.cpp
index 99fe750ebac6..5e58bb4008f5 100644
--- a/llvm/lib/DebugInfo/PDB/DIA/DIASession.cpp
+++ b/llvm/lib/DebugInfo/PDB/DIA/DIASession.cpp
@@ -157,6 +157,22 @@ DIASession::findSymbolByAddress(uint64_t Address, PDB_SymType Type) const {
   return PDBSymbol::create(*this, std::move(RawSymbol));
 }
 
+std::unique_ptr<IPDBEnumLineNumbers>
+DIASession::findLineNumbers(const PDBSymbolCompiland &Compiland,
+                            const IPDBSourceFile &File) const {
+  const DIARawSymbol &RawCompiland =
+      static_cast<const DIARawSymbol &>(Compiland.getRawSymbol());
+  const DIASourceFile &RawFile = static_cast<const DIASourceFile &>(File);
+
+  CComPtr<IDiaEnumLineNumbers> LineNumbers;
+  if (S_OK !=
+      Session->findLines(RawCompiland.getDiaSymbol(), RawFile.getDiaFile(),
+                         &LineNumbers))
+    return nullptr;
+
+  return llvm::make_unique<DIAEnumLineNumbers>(LineNumbers);
+}
+
 std::unique_ptr<IPDBEnumLineNumbers>
 DIASession::findLineNumbersByAddress(uint64_t Address, uint32_t Length) const {
   CComPtr<IDiaEnumLineNumbers> LineNumbers;
@@ -166,6 +182,56 @@ DIASession::findLineNumbersByAddress(uint64_t Address, uint32_t Length) const {
   return llvm::make_unique<DIAEnumLineNumbers>(LineNumbers);
 }
 
+std::unique_ptr<IPDBEnumSourceFiles>
+DIASession::findSourceFiles(const PDBSymbolCompiland *Compiland,
+                            llvm::StringRef Pattern,
+                            PDB_NameSearchFlags Flags) const {
+  IDiaSymbol *DiaCompiland = nullptr;
+  CComBSTR Utf16Pattern;
+  if (!Pattern.empty())
+    Utf16Pattern = CComBSTR(Pattern.data());
+
+  if (Compiland)
+    DiaCompiland = static_cast<const DIARawSymbol &>(Compiland->getRawSymbol())
+                       .getDiaSymbol();
+
+  Flags = static_cast<PDB_NameSearchFlags>(
+      Flags | PDB_NameSearchFlags::NS_FileNameExtMatch);
+  CComPtr<IDiaEnumSourceFiles> SourceFiles;
+  if (S_OK !=
+      Session->findFile(DiaCompiland, Utf16Pattern.m_str, Flags, &SourceFiles))
+    return nullptr;
+  return llvm::make_unique<DIAEnumSourceFiles>(*this, SourceFiles);
+}
+
+std::unique_ptr<IPDBSourceFile>
+DIASession::findOneSourceFile(const PDBSymbolCompiland *Compiland,
+                              llvm::StringRef Pattern,
+                              PDB_NameSearchFlags Flags) const {
+  auto SourceFiles = findSourceFiles(Compiland, Pattern, Flags);
+  if (!SourceFiles || SourceFiles->getChildCount() == 0)
+    return nullptr;
+  return SourceFiles->getNext();
+}
+
+std::unique_ptr<IPDBEnumChildren<PDBSymbolCompiland>>
+DIASession::findCompilandsForSourceFile(llvm::StringRef Pattern,
+                                        PDB_NameSearchFlags Flags) const {
+  auto File = findOneSourceFile(nullptr, Pattern, Flags);
+  if (!File)
+    return nullptr;
+  return File->getCompilands();
+}
+
+std::unique_ptr<PDBSymbolCompiland>
+DIASession::findOneCompilandForSourceFile(llvm::StringRef Pattern,
+                                          PDB_NameSearchFlags Flags) const {
+  auto Compilands = findCompilandsForSourceFile(Pattern, Flags);
+  if (!Compilands || Compilands->getChildCount() == 0)
+    return nullptr;
+  return Compilands->getNext();
+}
+
 std::unique_ptr<IPDBEnumSourceFiles> DIASession::getAllSourceFiles() const {
   CComPtr<IDiaEnumSourceFiles> Files;
   if (S_OK != Session->findFile(nullptr, nullptr, nsNone, &Files))
diff --git a/llvm/lib/DebugInfo/PDB/DIA/DIASourceFile.cpp b/llvm/lib/DebugInfo/PDB/DIA/DIASourceFile.cpp
index 0a9c444f5e6e..9600a1972ea5 100644
--- a/llvm/lib/DebugInfo/PDB/DIA/DIASourceFile.cpp
+++ b/llvm/lib/DebugInfo/PDB/DIA/DIASourceFile.cpp
@@ -7,9 +7,11 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "llvm/DebugInfo/PDB/DIA/DIASourceFile.h"
+#include "llvm/DebugInfo/PDB/ConcreteSymbolEnumerator.h"
 #include "llvm/DebugInfo/PDB/DIA/DIAEnumSymbols.h"
 #include "llvm/DebugInfo/PDB/DIA/DIASession.h"
-#include "llvm/DebugInfo/PDB/DIA/DIASourceFile.h"
+#include "llvm/DebugInfo/PDB/PDBSymbolCompiland.h"
 #include "llvm/Support/ConvertUTF.h"
 
 using namespace llvm;
@@ -56,12 +58,15 @@ PDB_Checksum DIASourceFile::getChecksumType() const {
   return static_cast<PDB_Checksum>(Type);
 }
 
-std::unique_ptr<IPDBEnumSymbols> DIASourceFile::getCompilands() const {
+std::unique_ptr<IPDBEnumChildren<PDBSymbolCompiland>>
+DIASourceFile::getCompilands() const {
   CComPtr<IDiaEnumSymbols> DiaEnumerator;
   HRESULT Result = SourceFile->get_compilands(&DiaEnumerator);
   if (S_OK != Result)
     return nullptr;
 
-  return std::unique_ptr<IPDBEnumSymbols>(
+  auto Enumerator = std::unique_ptr<IPDBEnumSymbols>(
       new DIAEnumSymbols(Session, DiaEnumerator));
+  return std::unique_ptr<IPDBEnumChildren<PDBSymbolCompiland>>(
+      new ConcreteSymbolEnumerator<PDBSymbolCompiland>(std::move(Enumerator)));
 }
diff --git a/llvm/lib/DebugInfo/PDB/PDBSymbolCompiland.cpp b/llvm/lib/DebugInfo/PDB/PDBSymbolCompiland.cpp
index 74369148e26e..8393b5cdfd1a 100644
--- a/llvm/lib/DebugInfo/PDB/PDBSymbolCompiland.cpp
+++ b/llvm/lib/DebugInfo/PDB/PDBSymbolCompiland.cpp
@@ -8,6 +8,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/DebugInfo/PDB/PDBSymbolCompiland.h"
+#include "llvm/DebugInfo/PDB/PDBSymbolCompilandEnv.h"
 
 #include "llvm/DebugInfo/PDB/PDBSymDumper.h"
 
@@ -22,3 +23,21 @@ PDBSymbolCompiland::PDBSymbolCompiland(const IPDBSession &PDBSession,
 void PDBSymbolCompiland::dump(PDBSymDumper &Dumper) const {
   Dumper.dump(*this);
 }
+
+std::string PDBSymbolCompiland::getSourceFileName() const
+{
+    std::string Result = RawSymbol->getSourceFileName();
+    if (!Result.empty())
+        return Result;
+    auto Envs = findAllChildren<PDBSymbolCompilandEnv>();
+    if (!Envs)
+        return std::string();
+    while (auto Env = Envs->getNext()) {
+        std::string Var = Env->getName();
+        if (Var != "src")
+            continue;
+        std::string Value = Env->getValue();
+        return Value;
+    }
+    return std::string();
+}
diff --git a/llvm/unittests/DebugInfo/PDB/PDBApiTest.cpp b/llvm/unittests/DebugInfo/PDB/PDBApiTest.cpp
index ebd3d7bb6b3c..736a6ccb0de3 100644
--- a/llvm/unittests/DebugInfo/PDB/PDBApiTest.cpp
+++ b/llvm/unittests/DebugInfo/PDB/PDBApiTest.cpp
@@ -78,9 +78,35 @@ class MockSession : public IPDBSession {
     return nullptr;
   }
   std::unique_ptr<IPDBEnumLineNumbers>
+  findLineNumbers(const PDBSymbolCompiland &Compiland,
+                  const IPDBSourceFile &File) const override {
+    return nullptr;
+  }
+  std::unique_ptr<IPDBEnumLineNumbers>
   findLineNumbersByAddress(uint64_t Address, uint32_t Length) const override {
     return nullptr;
   }
+  std::unique_ptr<IPDBEnumSourceFiles>
+  findSourceFiles(const PDBSymbolCompiland *Compiland, llvm::StringRef Pattern,
+                  PDB_NameSearchFlags Flags) const override {
+    return nullptr;
+  }
+  std::unique_ptr<IPDBSourceFile>
+  findOneSourceFile(const PDBSymbolCompiland *Compiland,
+                    llvm::StringRef Pattern,
+                    PDB_NameSearchFlags Flags) const override {
+    return nullptr;
+  }
+  std::unique_ptr<IPDBEnumChildren<PDBSymbolCompiland>>
+  findCompilandsForSourceFile(llvm::StringRef Pattern,
+                              PDB_NameSearchFlags Flags) const override {
+    return nullptr;
+  }
+  std::unique_ptr<PDBSymbolCompiland>
+  findOneCompilandForSourceFile(llvm::StringRef Pattern,
+                                PDB_NameSearchFlags Flags) const override {
+    return nullptr;
+  }
 
   std::unique_ptr<IPDBEnumSourceFiles> getAllSourceFiles() const override {
     return nullptr;