Rename some PDB classes

[zturner]

Summary

There is no functional change here, just renames.

In the DBI stream, there is an embedded array of structs (1) that list the modules contributing to the PDB, with a reference to a separate stream in the PDB (2) for more details. Each of those streams mentioned in (2) is further subdivided into smaller substreams (3) that contain various types of data.

(1) is called ModInfo
(2) is called ModStream
(3) is called ModuleSubstream

While seemingly intuitive, these have been a source of endless confusion for me. Is the ModuleSubstream in the DBI stream or the ModStream? Does the ModInfo contain the symbol data or is that somewhere else?

I decided to rename these. The new names are longer, but hopefully more descriptive. The mapping from old to new is:

ModInfo -> DbiModuleDescriptor (by prefixing with Dbi, we re-iterate that it's part of the DBI stream, and by including the word "descriptor", we emphasize that there's only minimal metadata here)

ModStream -> ModuleDebugStream (by including the word debug, we reinforce that this is where all the debug info details are).

ModuleSubstream -> ModuleDebugFragment (by saying "fragment" instead of "substream", we emphasize that a ModuleDebugStream is built up from a collection of many fragments, and there is nothing else of importance in one of these streams besides the list of fragments.)

llvm/include/llvm/DebugInfo/CodeView/CodeView.h

 enum class ModifierOptions : uint16_t {
   None = 0x0000,
   Const = 0x0001,
   Volatile = 0x0002,
   Unaligned = 0x0004
 };
 CV_DEFINE_ENUM_CLASS_FLAGS_OPERATORS(ModifierOptions)
 
-enum class ModuleSubstreamKind : uint32_t {
+enum class ModuleDebugFragmentKind : uint32_t {
   None = 0,
   Symbols = 0xf1,
   Lines = 0xf2,
   StringTable = 0xf3,
   FileChecksums = 0xf4,
   FrameData = 0xf5,
   InlineeLines = 0xf6,
   CrossScopeImports = 0xf7,

llvm/include/llvm/DebugInfo/CodeView/ModuleDebugFragment.h

+//===- ModuleDebugFragment.h ------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_DEBUGINFO_CODEVIEW_MODULEDEBUGFRAGMENT_H
+#define LLVM_DEBUGINFO_CODEVIEW_MODULEDEBUGFRAGMENT_H
+
+#include "llvm/DebugInfo/CodeView/CodeView.h"
+#include "llvm/Support/BinaryStreamArray.h"
+#include "llvm/Support/BinaryStreamRef.h"
+#include "llvm/Support/Endian.h"
+#include "llvm/Support/Error.h"
+
+namespace llvm {
+namespace codeview {
+
+// Corresponds to the `CV_DebugSSubsectionHeader_t` structure.
+struct ModuleDebugFragmentHeader {
+  support::ulittle32_t Kind;   // codeview::ModuleDebugFragmentKind enum
+  support::ulittle32_t Length; // number of bytes occupied by this record.
+};
+
+// Corresponds to the `CV_DebugSLinesHeader_t` structure.
+struct LineFragmentHeader {
+  support::ulittle32_t RelocOffset;  // Code offset of line contribution.
+  support::ulittle16_t RelocSegment; // Code segment of line contribution.
+  support::ulittle16_t Flags;        // See LineFlags enumeration.
+  support::ulittle32_t CodeSize;     // Code size of this line contribution.
+};
+
+// Corresponds to the `CV_DebugSLinesFileBlockHeader_t` structure.
+struct LineBlockFragmentHeader {
+  support::ulittle32_t NameIndex; // Index in DBI name buffer of filename.
+  support::ulittle32_t NumLines;  // Number of lines
+  support::ulittle32_t BlockSize; // Code size of block, in bytes.
+  // The following two variable length arrays appear immediately after the
+  // header.  The structure definitions follow.
+  // LineNumberEntry   Lines[NumLines];
+  // ColumnNumberEntry Columns[NumLines];
+};
+
+// Corresponds to `CV_Line_t` structure
+struct LineNumberEntry {
+  support::ulittle32_t Offset; // Offset to start of code bytes for line number
+  support::ulittle32_t Flags;  // Start:24, End:7, IsStatement:1
+};
+
+// Corresponds to `CV_Column_t` structure
+struct ColumnNumberEntry {
+  support::ulittle16_t StartColumn;
+  support::ulittle16_t EndColumn;
+};
+
+class ModuleDebugFragment {
+public:
+  ModuleDebugFragment();
+  ModuleDebugFragment(ModuleDebugFragmentKind Kind, BinaryStreamRef Data);
+  static Error initialize(BinaryStreamRef Stream, ModuleDebugFragment &Info);
+  uint32_t getRecordLength() const;
+  ModuleDebugFragmentKind kind() const;
+  BinaryStreamRef getRecordData() const;
+
+private:
+  ModuleDebugFragmentKind Kind;
+  BinaryStreamRef Data;
+};
+
+typedef VarStreamArray<ModuleDebugFragment> ModuleDebugFragmentArray;
+} // namespace codeview
+
+template <> struct VarStreamArrayExtractor<codeview::ModuleDebugFragment> {
+  Error operator()(BinaryStreamRef Stream, uint32_t &Length,
+                   codeview::ModuleDebugFragment &Info) const {
+    if (auto EC = codeview::ModuleDebugFragment::initialize(Stream, Info))
+      return EC;
+    Length = Info.getRecordLength();
+    return Error::success();
+  }
+};
+} // namespace llvm
+
+#endif // LLVM_DEBUGINFO_CODEVIEW_MODULEDEBUGFRAGMENT_H

llvm/include/llvm/DebugInfo/CodeView/ModuleDebugFragmentVisitor.h

+//===- ModuleDebugFragmentVisitor.h -----------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_DEBUGINFO_CODEVIEW_MODULEDEBUGFRAGMENTVISITOR_H
+#define LLVM_DEBUGINFO_CODEVIEW_MODULEDEBUGFRAGMENTVISITOR_H
+
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/DebugInfo/CodeView/CodeView.h"
+#include "llvm/DebugInfo/CodeView/CodeViewError.h"
+#include "llvm/DebugInfo/CodeView/Line.h"
+#include "llvm/DebugInfo/CodeView/ModuleDebugFragment.h"
+#include "llvm/Support/BinaryStreamArray.h"
+#include "llvm/Support/BinaryStreamReader.h"
+#include "llvm/Support/BinaryStreamRef.h"
+#include "llvm/Support/Endian.h"
+#include "llvm/Support/Error.h"
+#include <cstdint>
+
+namespace llvm {
+
+namespace codeview {
+
+struct LineColumnEntry {
+  support::ulittle32_t NameIndex;
+  FixedStreamArray<LineNumberEntry> LineNumbers;
+  FixedStreamArray<ColumnNumberEntry> Columns;
+};
+
+struct FileChecksumEntry {
+  uint32_t FileNameOffset;    // Byte offset of filename in global stringtable.
+  FileChecksumKind Kind;      // The type of checksum.
+  ArrayRef<uint8_t> Checksum; // The bytes of the checksum.
+};
+
+typedef VarStreamArray<LineColumnEntry> LineInfoArray;
+typedef VarStreamArray<FileChecksumEntry> FileChecksumArray;
+
+class ModuleDebugFragmentVisitor {
+public:
+  virtual ~ModuleDebugFragmentVisitor() = default;
+
+  virtual Error visitUnknown(ModuleDebugFragmentKind Kind,
+                             BinaryStreamRef Data) = 0;
+  virtual Error visitSymbols(BinaryStreamRef Data);
+  virtual Error visitLines(BinaryStreamRef Data,
+                           const LineFragmentHeader *Header,
+                           const LineInfoArray &Lines);
+  virtual Error visitStringTable(BinaryStreamRef Data);
+  virtual Error visitFileChecksums(BinaryStreamRef Data,
+                                   const FileChecksumArray &Checksums);
+  virtual Error visitFrameData(BinaryStreamRef Data);
+  virtual Error visitInlineeLines(BinaryStreamRef Data);
+  virtual Error visitCrossScopeImports(BinaryStreamRef Data);
+  virtual Error visitCrossScopeExports(BinaryStreamRef Data);
+  virtual Error visitILLines(BinaryStreamRef Data);
+  virtual Error visitFuncMDTokenMap(BinaryStreamRef Data);
+  virtual Error visitTypeMDTokenMap(BinaryStreamRef Data);
+  virtual Error visitMergedAssemblyInput(BinaryStreamRef Data);
+  virtual Error visitCoffSymbolRVA(BinaryStreamRef Data);
+};
+
+Error visitModuleDebugFragment(const ModuleDebugFragment &R,
+                               ModuleDebugFragmentVisitor &V);
+} // end namespace codeview
+
+template <> class VarStreamArrayExtractor<codeview::LineColumnEntry> {
+public:
+  VarStreamArrayExtractor(const codeview::LineFragmentHeader *Header)
+      : Header(Header) {}
+
+  Error operator()(BinaryStreamRef Stream, uint32_t &Len,
+                   codeview::LineColumnEntry &Item) const {
+    using namespace codeview;
+    const LineBlockFragmentHeader *BlockHeader;
+    BinaryStreamReader Reader(Stream);
+    if (auto EC = Reader.readObject(BlockHeader))
+      return EC;
+    bool HasColumn = Header->Flags & uint32_t(LineFlags::HaveColumns);
+    uint32_t LineInfoSize =
+        BlockHeader->NumLines *
+        (sizeof(LineNumberEntry) + (HasColumn ? sizeof(ColumnNumberEntry) : 0));
+    if (BlockHeader->BlockSize < sizeof(LineBlockFragmentHeader))
+      return make_error<CodeViewError>(cv_error_code::corrupt_record,
+                                       "Invalid line block record size");
+    uint32_t Size = BlockHeader->BlockSize - sizeof(LineBlockFragmentHeader);
+    if (LineInfoSize > Size)
+      return make_error<CodeViewError>(cv_error_code::corrupt_record,
+                                       "Invalid line block record size");
+    // The value recorded in BlockHeader->BlockSize includes the size of
+    // LineBlockFragmentHeader.
+    Len = BlockHeader->BlockSize;
+    Item.NameIndex = BlockHeader->NameIndex;
+    if (auto EC = Reader.readArray(Item.LineNumbers, BlockHeader->NumLines))
+      return EC;
+    if (HasColumn) {
+      if (auto EC = Reader.readArray(Item.Columns, BlockHeader->NumLines))
+        return EC;
+    }
+    return Error::success();
+  }
+
+private:
+  const codeview::LineFragmentHeader *Header;
+};
+
+template <> class VarStreamArrayExtractor<codeview::FileChecksumEntry> {
+public:
+  Error operator()(BinaryStreamRef Stream, uint32_t &Len,
+                   codeview::FileChecksumEntry &Item) const {
+    using namespace codeview;
+    const FileChecksum *Header;
+    BinaryStreamReader Reader(Stream);
+    if (auto EC = Reader.readObject(Header))
+      return EC;
+    Item.FileNameOffset = Header->FileNameOffset;
+    Item.Kind = static_cast<FileChecksumKind>(Header->ChecksumKind);
+    if (auto EC = Reader.readBytes(Item.Checksum, Header->ChecksumSize))
+      return EC;
+    Len = sizeof(FileChecksum) + Header->ChecksumSize;
+    return Error::success();
+  }
+};
+
+} // end namespace llvm
+
+#endif // LLVM_DEBUGINFO_CODEVIEW_MODULEDEBUGFRAGMENTVISITOR_H

llvm/include/llvm/DebugInfo/CodeView/ModuleSubstream.h

-//===- ModuleSubstream.h ----------------------------------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_DEBUGINFO_CODEVIEW_MODULESUBSTREAM_H
-#define LLVM_DEBUGINFO_CODEVIEW_MODULESUBSTREAM_H
-
-#include "llvm/DebugInfo/CodeView/CodeView.h"
-#include "llvm/Support/BinaryStreamArray.h"
-#include "llvm/Support/BinaryStreamRef.h"
-#include "llvm/Support/Endian.h"
-#include "llvm/Support/Error.h"
-
-namespace llvm {
-namespace codeview {
-
-// Corresponds to the `CV_DebugSSubsectionHeader_t` structure.
-struct ModuleSubsectionHeader {
-  support::ulittle32_t Kind;   // codeview::ModuleSubstreamKind enum
-  support::ulittle32_t Length; // number of bytes occupied by this record.
-};
-
-// Corresponds to the `CV_DebugSLinesHeader_t` structure.
-struct LineSubstreamHeader {
-  support::ulittle32_t RelocOffset;  // Code offset of line contribution.
-  support::ulittle16_t RelocSegment; // Code segment of line contribution.
-  support::ulittle16_t Flags;        // See LineFlags enumeration.
-  support::ulittle32_t CodeSize;     // Code size of this line contribution.
-};
-
-// Corresponds to the `CV_DebugSLinesFileBlockHeader_t` structure.
-struct LineFileBlockHeader {
-  support::ulittle32_t NameIndex; // Index in DBI name buffer of filename.
-  support::ulittle32_t NumLines;  // Number of lines
-  support::ulittle32_t BlockSize; // Code size of block, in bytes.
-  // The following two variable length arrays appear immediately after the
-  // header.  The structure definitions follow.
-  // LineNumberEntry   Lines[NumLines];
-  // ColumnNumberEntry Columns[NumLines];
-};
-
-// Corresponds to `CV_Line_t` structure
-struct LineNumberEntry {
-  support::ulittle32_t Offset; // Offset to start of code bytes for line number
-  support::ulittle32_t Flags;  // Start:24, End:7, IsStatement:1
-};
-
-// Corresponds to `CV_Column_t` structure
-struct ColumnNumberEntry {
-  support::ulittle16_t StartColumn;
-  support::ulittle16_t EndColumn;
-};
-
-class ModuleSubstream {
-public:
-  ModuleSubstream();
-  ModuleSubstream(ModuleSubstreamKind Kind, BinaryStreamRef Data);
-  static Error initialize(BinaryStreamRef Stream, ModuleSubstream &Info);
-  uint32_t getRecordLength() const;
-  ModuleSubstreamKind getSubstreamKind() const;
-  BinaryStreamRef getRecordData() const;
-
-private:
-  ModuleSubstreamKind Kind;
-  BinaryStreamRef Data;
-};
-
-typedef VarStreamArray<ModuleSubstream> ModuleSubstreamArray;
-} // namespace codeview
-
-template <> struct VarStreamArrayExtractor<codeview::ModuleSubstream> {
-  Error operator()(BinaryStreamRef Stream, uint32_t &Length,
-                   codeview::ModuleSubstream &Info) const {
-    if (auto EC = codeview::ModuleSubstream::initialize(Stream, Info))
-      return EC;
-    Length = Info.getRecordLength();
-    return Error::success();
-  }
-};
-} // namespace llvm
-
-#endif // LLVM_DEBUGINFO_CODEVIEW_MODULESUBSTREAM_H

llvm/include/llvm/DebugInfo/CodeView/ModuleSubstreamVisitor.h

-//===- ModuleSubstreamVisitor.h ---------------------------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_DEBUGINFO_CODEVIEW_MODULESUBSTREAMVISITOR_H
-#define LLVM_DEBUGINFO_CODEVIEW_MODULESUBSTREAMVISITOR_H
-
-#include "llvm/ADT/ArrayRef.h"
-#include "llvm/DebugInfo/CodeView/CodeView.h"
-#include "llvm/DebugInfo/CodeView/CodeViewError.h"
-#include "llvm/DebugInfo/CodeView/Line.h"
-#include "llvm/DebugInfo/CodeView/ModuleSubstream.h"
-#include "llvm/Support/BinaryStreamArray.h"
-#include "llvm/Support/BinaryStreamReader.h"
-#include "llvm/Support/BinaryStreamRef.h"
-#include "llvm/Support/Endian.h"
-#include "llvm/Support/Error.h"
-#include <cstdint>
-
-namespace llvm {
-
-namespace codeview {
-
-struct LineColumnEntry {
-  support::ulittle32_t NameIndex;
-  FixedStreamArray<LineNumberEntry> LineNumbers;
-  FixedStreamArray<ColumnNumberEntry> Columns;
-};
-
-struct FileChecksumEntry {
-  uint32_t FileNameOffset;    // Byte offset of filename in global stringtable.
-  FileChecksumKind Kind;      // The type of checksum.
-  ArrayRef<uint8_t> Checksum; // The bytes of the checksum.
-};
-
-typedef VarStreamArray<LineColumnEntry> LineInfoArray;
-typedef VarStreamArray<FileChecksumEntry> FileChecksumArray;
-
-class IModuleSubstreamVisitor {
-public:
-  virtual ~IModuleSubstreamVisitor() = default;
-
-  virtual Error visitUnknown(ModuleSubstreamKind Kind,
-                             BinaryStreamRef Data) = 0;
-  virtual Error visitSymbols(BinaryStreamRef Data);
-  virtual Error visitLines(BinaryStreamRef Data,
-                           const LineSubstreamHeader *Header,
-                           const LineInfoArray &Lines);
-  virtual Error visitStringTable(BinaryStreamRef Data);
-  virtual Error visitFileChecksums(BinaryStreamRef Data,
-                                   const FileChecksumArray &Checksums);
-  virtual Error visitFrameData(BinaryStreamRef Data);
-  virtual Error visitInlineeLines(BinaryStreamRef Data);
-  virtual Error visitCrossScopeImports(BinaryStreamRef Data);
-  virtual Error visitCrossScopeExports(BinaryStreamRef Data);
-  virtual Error visitILLines(BinaryStreamRef Data);
-  virtual Error visitFuncMDTokenMap(BinaryStreamRef Data);
-  virtual Error visitTypeMDTokenMap(BinaryStreamRef Data);
-  virtual Error visitMergedAssemblyInput(BinaryStreamRef Data);
-  virtual Error visitCoffSymbolRVA(BinaryStreamRef Data);
-};
-
-Error visitModuleSubstream(const ModuleSubstream &R,
-                           IModuleSubstreamVisitor &V);
-} // end namespace codeview
-
-template <> class VarStreamArrayExtractor<codeview::LineColumnEntry> {
-public:
-  VarStreamArrayExtractor(const codeview::LineSubstreamHeader *Header)
-      : Header(Header) {}
-
-  Error operator()(BinaryStreamRef Stream, uint32_t &Len,
-                   codeview::LineColumnEntry &Item) const {
-    using namespace codeview;
-    const LineFileBlockHeader *BlockHeader;
-    BinaryStreamReader Reader(Stream);
-    if (auto EC = Reader.readObject(BlockHeader))
-      return EC;
-    bool HasColumn = Header->Flags & uint32_t(LineFlags::HaveColumns);
-    uint32_t LineInfoSize =
-        BlockHeader->NumLines *
-        (sizeof(LineNumberEntry) + (HasColumn ? sizeof(ColumnNumberEntry) : 0));
-    if (BlockHeader->BlockSize < sizeof(LineFileBlockHeader))
-      return make_error<CodeViewError>(cv_error_code::corrupt_record,
-                                       "Invalid line block record size");
-    uint32_t Size = BlockHeader->BlockSize - sizeof(LineFileBlockHeader);
-    if (LineInfoSize > Size)
-      return make_error<CodeViewError>(cv_error_code::corrupt_record,
-                                       "Invalid line block record size");
-    // The value recorded in BlockHeader->BlockSize includes the size of
-    // LineFileBlockHeader.
-    Len = BlockHeader->BlockSize;
-    Item.NameIndex = BlockHeader->NameIndex;
-    if (auto EC = Reader.readArray(Item.LineNumbers, BlockHeader->NumLines))
-      return EC;
-    if (HasColumn) {
-      if (auto EC = Reader.readArray(Item.Columns, BlockHeader->NumLines))
-        return EC;
-    }
-    return Error::success();
-  }
-
-private:
-  const codeview::LineSubstreamHeader *Header;
-};
-
-template <> class VarStreamArrayExtractor<codeview::FileChecksumEntry> {
-public:
-  Error operator()(BinaryStreamRef Stream, uint32_t &Len,
-                   codeview::FileChecksumEntry &Item) const {
-    using namespace codeview;
-    const FileChecksum *Header;
-    BinaryStreamReader Reader(Stream);
-    if (auto EC = Reader.readObject(Header))
-      return EC;
-    Item.FileNameOffset = Header->FileNameOffset;
-    Item.Kind = static_cast<FileChecksumKind>(Header->ChecksumKind);
-    if (auto EC = Reader.readBytes(Item.Checksum, Header->ChecksumSize))
-      return EC;
-    Len = sizeof(FileChecksum) + Header->ChecksumSize;
-    return Error::success();
-  }
-};
-
-} // end namespace llvm
-
-#endif // LLVM_DEBUGINFO_CODEVIEW_MODULESUBSTREAMVISITOR_H

llvm/include/llvm/DebugInfo/PDB/Native/DbiModuleDescriptor.h

+//===- DbiModuleDescriptor.h - PDB module information -----------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_DEBUGINFO_PDB_RAW_DBIMODULEDESCRIPTOR_H
+#define LLVM_DEBUGINFO_PDB_RAW_DBIMODULEDESCRIPTOR_H
+
+#include "llvm/ADT/StringRef.h"
+#include "llvm/DebugInfo/PDB/Native/RawTypes.h"
+#include "llvm/Support/BinaryStreamArray.h"
+#include "llvm/Support/BinaryStreamRef.h"
+#include "llvm/Support/Error.h"
+#include <cstdint>
+#include <vector>
+
+namespace llvm {
+
+namespace pdb {
+
+class DbiModuleDescriptor {
+  friend class DbiStreamBuilder;
+
+public:
+  DbiModuleDescriptor();
+  DbiModuleDescriptor(const DbiModuleDescriptor &Info);
+  ~DbiModuleDescriptor();
+
+  static Error initialize(BinaryStreamRef Stream, DbiModuleDescriptor &Info);
+
+  bool hasECInfo() const;
+  uint16_t getTypeServerIndex() const;
+  uint16_t getModuleStreamIndex() const;
+  uint32_t getSymbolDebugInfoByteSize() const;
+  uint32_t getLineInfoByteSize() const;
+  uint32_t getC13LineInfoByteSize() const;
+  uint32_t getNumberOfFiles() const;
+  uint32_t getSourceFileNameIndex() const;
+  uint32_t getPdbFilePathNameIndex() const;
+
+  StringRef getModuleName() const;
+  StringRef getObjFileName() const;
+
+  uint32_t getRecordLength() const;
+
+private:
+  StringRef ModuleName;
+  StringRef ObjFileName;
+  const ModuleInfoHeader *Layout = nullptr;
+};
+
+struct ModuleInfoEx {
+  ModuleInfoEx(const DbiModuleDescriptor &Info) : Info(Info) {}
+  ModuleInfoEx(const ModuleInfoEx &Ex) = default;
+
+  DbiModuleDescriptor Info;
+  std::vector<StringRef> SourceFiles;
+};
+
+} // end namespace pdb
+
+template <> struct VarStreamArrayExtractor<pdb::DbiModuleDescriptor> {
+  Error operator()(BinaryStreamRef Stream, uint32_t &Length,
+                   pdb::DbiModuleDescriptor &Info) const {
+    if (auto EC = pdb::DbiModuleDescriptor::initialize(Stream, Info))
+      return EC;
+    Length = Info.getRecordLength();
+    return Error::success();
+  }
+};
+
+} // end namespace llvm
+
+#endif // LLVM_DEBUGINFO_PDB_RAW_DBIMODULEDESCRIPTOR_H

llvm/include/llvm/DebugInfo/PDB/Native/DbiModuleDescriptorBuilder.h

+//===- DbiModuleDescriptorBuilder.h - PDB module information ----*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_DEBUGINFO_PDB_RAW_DBIMODULEDESCRIPTORBUILDER_H
+#define LLVM_DEBUGINFO_PDB_RAW_DBIMODULEDESCRIPTORBUILDER_H
+
+#include "llvm/ADT/StringRef.h"
+#include "llvm/DebugInfo/CodeView/SymbolRecord.h"
+#include "llvm/DebugInfo/PDB/Native/RawTypes.h"
+#include "llvm/Support/Error.h"
+#include <cstdint>
+#include <string>
+#include <vector>
+
+namespace llvm {
+class BinaryStreamWriter;
+
+namespace msf {
+class MSFBuilder;
+struct MSFLayout;
+}
+namespace pdb {
+
+class DbiModuleDescriptorBuilder {
+  friend class DbiStreamBuilder;
+
+public:
+  DbiModuleDescriptorBuilder(StringRef ModuleName, uint32_t ModIndex,
+                             msf::MSFBuilder &Msf);
+
+  DbiModuleDescriptorBuilder(const DbiModuleDescriptorBuilder &) = delete;
+  DbiModuleDescriptorBuilder &
+  operator=(const DbiModuleDescriptorBuilder &) = delete;
+
+  void setObjFileName(StringRef Name);
+  void addSymbol(codeview::CVSymbol Symbol);
+
+  uint16_t getStreamIndex() const;
+  StringRef getModuleName() const { return ModuleName; }
+  StringRef getObjFileName() const { return ObjFileName; }
+
+  ArrayRef<std::string> source_files() const {
+    return makeArrayRef(SourceFiles);
+  }
+
+  uint32_t calculateSerializedLength() const;
+
+  void finalize();
+  Error finalizeMsfLayout();
+
+  Error commit(BinaryStreamWriter &ModiWriter, const msf::MSFLayout &MsfLayout,
+               WritableBinaryStreamRef MsfBuffer);
+
+private:
+  void addSourceFile(StringRef Path);
+  msf::MSFBuilder &MSF;
+
+  uint32_t SymbolByteSize = 0;
+  std::string ModuleName;
+  std::string ObjFileName;
+  std::vector<std::string> SourceFiles;
+  std::vector<codeview::CVSymbol> Symbols;
+  ModuleInfoHeader Layout;
+};
+
+} // end namespace pdb
+
+} // end namespace llvm
+
+#endif // LLVM_DEBUGINFO_PDB_RAW_DBIMODULEDESCRIPTORBUILDER_H

llvm/include/llvm/DebugInfo/PDB/Native/DbiStream.h

 //===- DbiStream.h - PDB Dbi Stream (Stream 3) Access -----------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_DEBUGINFO_PDB_RAW_PDBDBISTREAM_H
 #define LLVM_DEBUGINFO_PDB_RAW_PDBDBISTREAM_H
 
-#include "llvm/DebugInfo/CodeView/ModuleSubstream.h"
+#include "llvm/DebugInfo/CodeView/ModuleDebugFragment.h"
 #include "llvm/DebugInfo/MSF/MappedBlockStream.h"
-#include "llvm/DebugInfo/PDB/Native/ModInfo.h"
+#include "llvm/DebugInfo/PDB/Native/DbiModuleDescriptor.h"
 #include "llvm/DebugInfo/PDB/Native/RawConstants.h"
 #include "llvm/DebugInfo/PDB/Native/RawTypes.h"
 #include "llvm/DebugInfo/PDB/Native/StringTable.h"
 #include "llvm/DebugInfo/PDB/PDBTypes.h"
 #include "llvm/Support/BinaryStreamArray.h"
 #include "llvm/Support/BinaryStreamArray.h"
 #include "llvm/Support/BinaryStreamRef.h"
 #include "llvm/Support/BinaryStreamRef.h"

llvm/include/llvm/DebugInfo/PDB/Native/DbiStreamBuilder.h

 class MSFBuilder;
 }
 namespace object {
 struct coff_section;
 }
 namespace pdb {
 class DbiStream;
 struct DbiStreamHeader;
-class ModInfoBuilder;
+class DbiModuleDescriptorBuilder;
 class PDBFile;
 
 class DbiStreamBuilder {
 public:
   DbiStreamBuilder(msf::MSFBuilder &Msf);
   ~DbiStreamBuilder();
 
   DbiStreamBuilder(const DbiStreamBuilder &) = delete;
public:
   void setSectionContribs(ArrayRef<SectionContrib> SecMap);
   void setSectionMap(ArrayRef<SecMapEntry> SecMap);
 
   // Add given bytes as a new stream.
   Error addDbgStream(pdb::DbgHeaderType Type, ArrayRef<uint8_t> Data);
 
   uint32_t calculateSerializedLength() const;
 
-  Expected<ModInfoBuilder &> addModuleInfo(StringRef ModuleName);
+  Expected<DbiModuleDescriptorBuilder &> addModuleInfo(StringRef ModuleName);
   Error addModuleSourceFile(StringRef Module, StringRef File);
 
   Error finalizeMsfLayout();
 
   Error commit(const msf::MSFLayout &Layout, WritableBinaryStreamRef MsfBuffer);
 
   // A helper function to create Section Contributions from COFF input
   // section headers.
private:
   uint16_t BuildNumber;
   uint16_t PdbDllVersion;
   uint16_t PdbDllRbld;
   uint16_t Flags;
   PDB_Machine MachineType;
 
   const DbiStreamHeader *Header;
 
-  StringMap<std::unique_ptr<ModInfoBuilder>> ModiMap;
-  std::vector<ModInfoBuilder *> ModiList;
+  StringMap<std::unique_ptr<DbiModuleDescriptorBuilder>> ModiMap;
+  std::vector<DbiModuleDescriptorBuilder *> ModiList;
 
   StringMap<uint32_t> SourceFileNames;
 
   WritableBinaryStreamRef NamesBuffer;
   MutableBinaryByteStream FileInfoBuffer;
   ArrayRef<SectionContrib> SectionContribs;
   ArrayRef<SecMapEntry> SectionMap;
   llvm::SmallVector<DebugStream, (int)DbgHeaderType::Max> DbgStreams;
 };
 }
 }
 
 #endif

llvm/include/llvm/DebugInfo/PDB/Native/ModInfo.h

-//===- ModInfo.h - PDB module information -----------------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_DEBUGINFO_PDB_RAW_MODINFO_H
-#define LLVM_DEBUGINFO_PDB_RAW_MODINFO_H
-
-#include "llvm/ADT/StringRef.h"
-#include "llvm/DebugInfo/PDB/Native/RawTypes.h"
-#include "llvm/Support/BinaryStreamArray.h"
-#include "llvm/Support/BinaryStreamRef.h"
-#include "llvm/Support/Error.h"
-#include <cstdint>
-#include <vector>
-
-namespace llvm {
-
-namespace pdb {
-
-class ModInfo {
-  friend class DbiStreamBuilder;
-
-public:
-  ModInfo();
-  ModInfo(const ModInfo &Info);
-  ~ModInfo();
-
-  static Error initialize(BinaryStreamRef Stream, ModInfo &Info);
-
-  bool hasECInfo() const;
-  uint16_t getTypeServerIndex() const;
-  uint16_t getModuleStreamIndex() const;
-  uint32_t getSymbolDebugInfoByteSize() const;
-  uint32_t getLineInfoByteSize() const;
-  uint32_t getC13LineInfoByteSize() const;
-  uint32_t getNumberOfFiles() const;
-  uint32_t getSourceFileNameIndex() const;
-  uint32_t getPdbFilePathNameIndex() const;
-
-  StringRef getModuleName() const;
-  StringRef getObjFileName() const;
-
-  uint32_t getRecordLength() const;
-
-private:
-  StringRef ModuleName;
-  StringRef ObjFileName;
-  const ModuleInfoHeader *Layout = nullptr;
-};
-
-struct ModuleInfoEx {
-  ModuleInfoEx(const ModInfo &Info) : Info(Info) {}
-  ModuleInfoEx(const ModuleInfoEx &Ex) = default;
-
-  ModInfo Info;
-  std::vector<StringRef> SourceFiles;
-};
-
-} // end namespace pdb
-
-template <> struct VarStreamArrayExtractor<pdb::ModInfo> {
-  Error operator()(BinaryStreamRef Stream, uint32_t &Length,
-                   pdb::ModInfo &Info) const {
-    if (auto EC = pdb::ModInfo::initialize(Stream, Info))
-      return EC;
-    Length = Info.getRecordLength();
-    return Error::success();
-  }
-};
-
-} // end namespace llvm
-
-#endif // LLVM_DEBUGINFO_PDB_RAW_MODINFO_H

llvm/include/llvm/DebugInfo/PDB/Native/ModInfoBuilder.h

-//===- ModInfoBuilder.h - PDB module information ----------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_DEBUGINFO_PDB_RAW_MODINFOBUILDER_H
-#define LLVM_DEBUGINFO_PDB_RAW_MODINFOBUILDER_H
-
-#include "llvm/ADT/StringRef.h"
-#include "llvm/DebugInfo/CodeView/SymbolRecord.h"
-#include "llvm/DebugInfo/PDB/Native/RawTypes.h"
-#include "llvm/Support/Error.h"
-#include <cstdint>
-#include <string>
-#include <vector>
-
-namespace llvm {
-class BinaryStreamWriter;
-
-namespace msf {
-class MSFBuilder;
-struct MSFLayout;
-}
-namespace pdb {
-
-class ModInfoBuilder {
-  friend class DbiStreamBuilder;
-
-public:
-  ModInfoBuilder(StringRef ModuleName, uint32_t ModIndex, msf::MSFBuilder &Msf);
-
-  ModInfoBuilder(const ModInfoBuilder &) = delete;
-  ModInfoBuilder &operator=(const ModInfoBuilder &) = delete;
-
-  void setObjFileName(StringRef Name);
-  void addSymbol(codeview::CVSymbol Symbol);
-
-  uint16_t getStreamIndex() const;
-  StringRef getModuleName() const { return ModuleName; }
-  StringRef getObjFileName() const { return ObjFileName; }
-
-  ArrayRef<std::string> source_files() const {
-    return makeArrayRef(SourceFiles);
-  }
-
-  uint32_t calculateSerializedLength() const;
-
-  void finalize();
-  Error finalizeMsfLayout();
-
-  Error commit(BinaryStreamWriter &ModiWriter, const msf::MSFLayout &MsfLayout,
-               WritableBinaryStreamRef MsfBuffer);
-
-private:
-  void addSourceFile(StringRef Path);
-  msf::MSFBuilder &MSF;
-
-  uint32_t SymbolByteSize = 0;
-  std::string ModuleName;
-  std::string ObjFileName;
-  std::vector<std::string> SourceFiles;
-  std::vector<codeview::CVSymbol> Symbols;
-  ModuleInfoHeader Layout;
-};
-
-} // end namespace pdb
-
-} // end namespace llvm
-
-#endif // LLVM_DEBUGINFO_PDB_RAW_MODINFOBUILDER_H

llvm/include/llvm/DebugInfo/PDB/Native/ModStream.h

-//===- ModStream.h - PDB Module Info Stream Access ------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#ifndef LLVM_DEBUGINFO_PDB_RAW_MODSTREAM_H
-#define LLVM_DEBUGINFO_PDB_RAW_MODSTREAM_H
-
-#include "llvm/ADT/iterator_range.h"
-#include "llvm/DebugInfo/CodeView/CVRecord.h"
-#include "llvm/DebugInfo/CodeView/ModuleSubstream.h"
-#include "llvm/DebugInfo/CodeView/SymbolRecord.h"
-#include "llvm/DebugInfo/MSF/MappedBlockStream.h"
-#include "llvm/Support/BinaryStreamArray.h"
-#include "llvm/Support/BinaryStreamRef.h"
-#include "llvm/Support/Error.h"
-
-namespace llvm {
-namespace pdb {
-class PDBFile;
-class ModInfo;
-
-class ModStream {
-public:
-  ModStream(const ModInfo &Module,
-            std::unique_ptr<msf::MappedBlockStream> Stream);
-  ~ModStream();
-
-  Error reload();
-
-  uint32_t signature() const { return Signature; }
-
-  iterator_range<codeview::CVSymbolArray::Iterator>
-  symbols(bool *HadError) const;
-
-  iterator_range<codeview::ModuleSubstreamArray::Iterator>
-  lines(bool *HadError) const;
-
-  bool hasLineInfo() const;
-
-  Error commit();
-
-private:
-  const ModInfo &Mod;
-
-  uint32_t Signature;
-
-  std::unique_ptr<msf::MappedBlockStream> Stream;
-
-  codeview::CVSymbolArray SymbolsSubstream;
-  BinaryStreamRef LinesSubstream;
-  BinaryStreamRef C13LinesSubstream;
-  BinaryStreamRef GlobalRefsSubstream;
-
-  codeview::ModuleSubstreamArray LineInfo;
-};
-}
-}
-
-#endif

llvm/include/llvm/DebugInfo/PDB/Native/ModuleDebugStream.h

+//===- ModuleDebugStream.h - PDB Module Info Stream Access ----------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_DEBUGINFO_PDB_RAW_MODULEDEBUGSTREAM_H
+#define LLVM_DEBUGINFO_PDB_RAW_MODULEDEBUGSTREAM_H
+
+#include "llvm/ADT/iterator_range.h"
+#include "llvm/DebugInfo/CodeView/CVRecord.h"
+#include "llvm/DebugInfo/CodeView/ModuleDebugFragment.h"
+#include "llvm/DebugInfo/CodeView/SymbolRecord.h"
+#include "llvm/DebugInfo/MSF/MappedBlockStream.h"
+#include "llvm/Support/BinaryStreamArray.h"
+#include "llvm/Support/BinaryStreamRef.h"
+#include "llvm/Support/Error.h"
+
+namespace llvm {
+namespace pdb {
+class PDBFile;
+class DbiModuleDescriptor;
+
+class ModuleDebugStream {
+public:
+  ModuleDebugStream(const DbiModuleDescriptor &Module,
+                    std::unique_ptr<msf::MappedBlockStream> Stream);
+  ~ModuleDebugStream();
+
+  Error reload();
+
+  uint32_t signature() const { return Signature; }
+
+  iterator_range<codeview::CVSymbolArray::Iterator>
+  symbols(bool *HadError) const;
+
+  iterator_range<codeview::ModuleDebugFragmentArray::Iterator>
+  lines(bool *HadError) const;
+
+  bool hasLineInfo() const;
+
+  Error commit();
+
+private:
+  const DbiModuleDescriptor &Mod;
+
+  uint32_t Signature;
+
+  std::unique_ptr<msf::MappedBlockStream> Stream;
+
+  codeview::CVSymbolArray SymbolsSubstream;
+  BinaryStreamRef LinesSubstream;
+  BinaryStreamRef C13LinesSubstream;
+  BinaryStreamRef GlobalRefsSubstream;
+
+  codeview::ModuleDebugFragmentArray LineInfo;
+};
+}
+}
+
+#endif

llvm/include/llvm/DebugInfo/PDB/Native/NativeCompilandSymbol.h

 //===- NativeCompilandSymbol.h - native impl for compiland syms -*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_DEBUGINFO_PDB_NATIVE_NATIVECOMPILANDSYMBOL_H
 #define LLVM_DEBUGINFO_PDB_NATIVE_NATIVECOMPILANDSYMBOL_H
 
-#include "llvm/DebugInfo/PDB/Native/ModInfo.h"
+#include "llvm/DebugInfo/PDB/Native/DbiModuleDescriptor.h"
 #include "llvm/DebugInfo/PDB/Native/NativeRawSymbol.h"
 
 namespace llvm {
 namespace pdb {
 
 class NativeCompilandSymbol : public NativeRawSymbol {
 public:
   NativeCompilandSymbol(NativeSession &Session, const ModuleInfoEx &MI);

llvm/include/llvm/DebugInfo/PDB/Native/NativeEnumModules.h

 //==- NativeEnumModules.h - Native Module Enumerator impl --------*- C++ -*-==//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef LLVM_DEBUGINFO_PDB_NATIVE_NATIVEENUMMODULES_H
 #define LLVM_DEBUGINFO_PDB_NATIVE_NATIVEENUMMODULES_H
 
 #include "llvm/DebugInfo/PDB/IPDBEnumChildren.h"
-#include "llvm/DebugInfo/PDB/Native/ModInfo.h"
+#include "llvm/DebugInfo/PDB/Native/DbiModuleDescriptor.h"
 #include "llvm/DebugInfo/PDB/PDBSymbol.h"
 namespace llvm {
 namespace pdb {
 
 class NativeSession;
 
 class NativeEnumModules : public IPDBEnumChildren<PDBSymbol> {
 public:

llvm/include/llvm/DebugInfo/PDB/Native/RawTypes.h

struct FileInfoSubstreamHeader {
   ///   ulittle16_t ModFileCounts[NumModules];
   ///   ulittle32_t FileNameOffsets[NumSourceFiles];
   ///   char Names[][NumSourceFiles];
   /// with the caveat that `NumSourceFiles` cannot be trusted, so
   /// it is computed by summing the `ModFileCounts` array.
 };
 
 struct ModInfoFlags {
-  ///  uint16_t fWritten : 1;   // True if ModInfo is dirty
+  ///  uint16_t fWritten : 1;   // True if DbiModuleDescriptor is dirty
   ///  uint16_t fECEnabled : 1; // Is EC symbolic info present?  (What is EC?)
   ///  uint16_t unused : 6;     // Reserved
   ///  uint16_t iTSM : 8;       // Type Server Index for this module
   static const uint16_t HasECFlagMask = 0x2;
 
   static const uint16_t TypeServerIndexMask = 0xFF00;
   static const uint16_t TypeServerIndexShift = 8;
 };

llvm/include/llvm/DebugInfo/Symbolize/Symbolize.h

public:
 
   Expected<DILineInfo> symbolizeCode(const std::string &ModuleName,
                                      uint64_t ModuleOffset);
   Expected<DIInliningInfo> symbolizeInlinedCode(const std::string &ModuleName,
                                                 uint64_t ModuleOffset);
   Expected<DIGlobal> symbolizeData(const std::string &ModuleName,
                                    uint64_t ModuleOffset);
   void flush();
-  static std::string DemangleName(const std::string &Name,
-                                  const SymbolizableModule *ModInfo);
+  static std::string
+  DemangleName(const std::string &Name,
+               const SymbolizableModule *DbiModuleDescriptor);
 
 private:
   // Bundles together object file with code/data and object file with
   // corresponding debug info. These objects can be the same.
   typedef std::pair<ObjectFile*, ObjectFile*> ObjectPair;
 
   /// Returns a SymbolizableModule or an error if loading debug info failed.
   /// Only one attempt is made to load a module, and errors during loading are

llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.h

void emitDebugInfoForUDTs(
       ArrayRef<std::pair<std::string, codeview::TypeIndex>> UDTs);
 
   void emitDebugInfoForGlobal(const DIGlobalVariable *DIGV,
                               const GlobalVariable *GV, MCSymbol *GVSym);
 
   /// Opens a subsection of the given kind in a .debug$S codeview section.
   /// Returns an end label for use with endCVSubsection when the subsection is
   /// finished.
-  MCSymbol *beginCVSubsection(codeview::ModuleSubstreamKind Kind);
+  MCSymbol *beginCVSubsection(codeview::ModuleDebugFragmentKind Kind);
 
   void endCVSubsection(MCSymbol *EndLabel);
 
   void emitInlinedCallSite(const FunctionInfo &FI, const DILocation *InlinedAt,
                            const InlineSite &Site);
 
   typedef DbgValueHistoryMap::InlinedVariable InlinedVariable;
 

llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.cpp

void CodeViewDebug::endModule() {
   // with a 4-byte control code (e.g. 0xF1, 0xF2, etc) and then a 4-byte length
   // of the payload followed by the payload itself.  The subsections are 4-byte
   // aligned.
 
   // Use the generic .debug$S section, and make a subsection for all the inlined
   // subprograms.
   switchToDebugSectionForSymbol(nullptr);
 
-  MCSymbol *CompilerInfo = beginCVSubsection(ModuleSubstreamKind::Symbols);
+  MCSymbol *CompilerInfo = beginCVSubsection(ModuleDebugFragmentKind::Symbols);
   emitCompilerInformation();
   endCVSubsection(CompilerInfo);
 
   emitInlineeLinesSubsection();
 
   // Emit per-function debug information.
   for (auto &P : FnDebugInfo)
     if (!P.first->isDeclarationForLinker())
       emitDebugInfoForFunction(P.first, P.second);
 
   // Emit global variable debug information.
   setCurrentSubprogram(nullptr);
   emitDebugInfoForGlobals();
 
   // Emit retained types.
   emitDebugInfoForRetainedTypes();
 
   // Switch back to the generic .debug$S section after potentially processing
   // comdat symbol sections.
   switchToDebugSectionForSymbol(nullptr);
 
   // Emit UDT records for any types used by global variables.
   if (!GlobalUDTs.empty()) {
-    MCSymbol *SymbolsEnd = beginCVSubsection(ModuleSubstreamKind::Symbols);
+    MCSymbol *SymbolsEnd = beginCVSubsection(ModuleDebugFragmentKind::Symbols);
     emitDebugInfoForUDTs(GlobalUDTs);
     endCVSubsection(SymbolsEnd);
   }
 
   // This subsection holds a file index to offset in string table table.
   OS.AddComment("File index to string table offset subsection");
   OS.EmitCVFileChecksumsDirective();
 
void CodeViewDebug::emitCompilerInformation() {
   OS.EmitLabel(CompilerEnd);
 }
 
 void CodeViewDebug::emitInlineeLinesSubsection() {
   if (InlinedSubprograms.empty())
     return;
 
   OS.AddComment("Inlinee lines subsection");
-  MCSymbol *InlineEnd = beginCVSubsection(ModuleSubstreamKind::InlineeLines);
+  MCSymbol *InlineEnd =
+      beginCVSubsection(ModuleDebugFragmentKind::InlineeLines);
 
   // We don't provide any extra file info.
   // FIXME: Find out if debuggers use this info.
   OS.AddComment("Inlinee lines signature");
   OS.EmitIntValue(unsigned(InlineeLinesSignature::Normal), 4);
 
   for (const DISubprogram *SP : InlinedSubprograms) {
     assert(TypeIndices.count({SP, nullptr}));
FuncName =
         getFullyQualifiedName(SP->getScope().resolve(), SP->getDisplayName());
 
   // If our DISubprogram name is empty, use the mangled name.
   if (FuncName.empty())
     FuncName = GlobalValue::getRealLinkageName(GV->getName());
 
   // Emit a symbol subsection, required by VS2012+ to find function boundaries.
   OS.AddComment("Symbol subsection for " + Twine(FuncName));
-  MCSymbol *SymbolsEnd = beginCVSubsection(ModuleSubstreamKind::Symbols);
+  MCSymbol *SymbolsEnd = beginCVSubsection(ModuleDebugFragmentKind::Symbols);
   {
     MCSymbol *ProcRecordBegin = MMI->getContext().createTempSymbol(),
              *ProcRecordEnd = MMI->getContext().createTempSymbol();
     OS.AddComment("Record length");
     OS.emitAbsoluteSymbolDiff(ProcRecordEnd, ProcRecordBegin, 2);
     OS.EmitLabel(ProcRecordBegin);
 
     if (GV->hasLocalLinkage()) {
if (!Asm || !CurFn || MI->isDebugValue() ||
       MI->getFlag(MachineInstr::FrameSetup))
     return;
   DebugLoc DL = MI->getDebugLoc();
   if (DL == PrevInstLoc || !DL)
     return;
   maybeRecordLocation(DL, Asm->MF);
 }
 
-MCSymbol *CodeViewDebug::beginCVSubsection(ModuleSubstreamKind Kind) {
+MCSymbol *CodeViewDebug::beginCVSubsection(ModuleDebugFragmentKind Kind) {
   MCSymbol *BeginLabel = MMI->getContext().createTempSymbol(),
            *EndLabel = MMI->getContext().createTempSymbol();
   OS.EmitIntValue(unsigned(Kind), 4);
   OS.AddComment("Subsection size");
   OS.emitAbsoluteSymbolDiff(EndLabel, BeginLabel, 4);
   OS.EmitLabel(BeginLabel);
   return EndLabel;
 }
for (const MDNode *Node : CUs->operands()) {
     // it if we have at least one global to emit.
     switchToDebugSectionForSymbol(nullptr);
     MCSymbol *EndLabel = nullptr;
     for (const auto *GVE : CU->getGlobalVariables()) {
       if (const auto *GV = GlobalMap.lookup(GVE))
         if (!GV->hasComdat() && !GV->isDeclarationForLinker()) {
           if (!EndLabel) {
             OS.AddComment("Symbol subsection for globals");
-            EndLabel = beginCVSubsection(ModuleSubstreamKind::Symbols);
+            EndLabel = beginCVSubsection(ModuleDebugFragmentKind::Symbols);
           }
           // FIXME: emitDebugInfoForGlobal() doesn't handle DIExpressions.
           emitDebugInfoForGlobal(GVE->getVariable(), GV, Asm->getSymbol(GV));
         }
     }
     if (EndLabel)
       endCVSubsection(EndLabel);
 
     // Second, emit each global that is in a comdat into its own .debug$S
     // section along with its own symbol substream.
     for (const auto *GVE : CU->getGlobalVariables()) {
       if (const auto *GV = GlobalMap.lookup(GVE)) {
         if (GV->hasComdat()) {
           MCSymbol *GVSym = Asm->getSymbol(GV);
           OS.AddComment("Symbol subsection for " +
                         Twine(GlobalValue::getRealLinkageName(GV->getName())));
           switchToDebugSectionForSymbol(GVSym);
-          EndLabel = beginCVSubsection(ModuleSubstreamKind::Symbols);
+          EndLabel = beginCVSubsection(ModuleDebugFragmentKind::Symbols);
           // FIXME: emitDebugInfoForGlobal() doesn't handle DIExpressions.
           emitDebugInfoForGlobal(GVE->getVariable(), GV, GVSym);
           endCVSubsection(EndLabel);
         }
       }
     }
   }
 }

llvm/lib/DebugInfo/CodeView/CMakeLists.txt

 add_llvm_library(LLVMDebugInfoCodeView
   CodeViewError.cpp
   CodeViewRecordIO.cpp
   CVSymbolVisitor.cpp
   CVTypeDumper.cpp
   CVTypeVisitor.cpp
   EnumTables.cpp
   Formatters.cpp
   Line.cpp
-  ModuleSubstream.cpp
-  ModuleSubstreamVisitor.cpp
+  ModuleDebugFragment.cpp
+  ModuleDebugFragmentVisitor.cpp
   RecordSerialization.cpp
   SymbolRecordMapping.cpp
   SymbolDumper.cpp
   SymbolSerializer.cpp
   TypeDatabase.cpp
   TypeDatabaseVisitor.cpp
   TypeDumpVisitor.cpp
   TypeRecordMapping.cpp
   TypeSerializer.cpp
   TypeStreamMerger.cpp
 
   ADDITIONAL_HEADER_DIRS
   ${LLVM_MAIN_INCLUDE_DIR}/llvm/DebugInfo/CodeView
   )

llvm/lib/DebugInfo/CodeView/EnumTables.cpp

static const EnumEntry<uint32_t> FrameProcSymFlagNames[] = {
     CV_ENUM_CLASS_ENT(FrameProcedureOptions, ProfileGuidedOptimization),
     CV_ENUM_CLASS_ENT(FrameProcedureOptions, ValidProfileCounts),
     CV_ENUM_CLASS_ENT(FrameProcedureOptions, OptimizedForSpeed),
     CV_ENUM_CLASS_ENT(FrameProcedureOptions, GuardCfg),
     CV_ENUM_CLASS_ENT(FrameProcedureOptions, GuardCfw),
 };
 
 static const EnumEntry<uint32_t> ModuleSubstreamKindNames[] = {
-    CV_ENUM_CLASS_ENT(ModuleSubstreamKind, None),
-    CV_ENUM_CLASS_ENT(ModuleSubstreamKind, Symbols),
-    CV_ENUM_CLASS_ENT(ModuleSubstreamKind, Lines),
-    CV_ENUM_CLASS_ENT(ModuleSubstreamKind, StringTable),
-    CV_ENUM_CLASS_ENT(ModuleSubstreamKind, FileChecksums),
-    CV_ENUM_CLASS_ENT(ModuleSubstreamKind, FrameData),
-    CV_ENUM_CLASS_ENT(ModuleSubstreamKind, InlineeLines),
-    CV_ENUM_CLASS_ENT(ModuleSubstreamKind, CrossScopeImports),
-    CV_ENUM_CLASS_ENT(ModuleSubstreamKind, CrossScopeExports),
-    CV_ENUM_CLASS_ENT(ModuleSubstreamKind, ILLines),
-    CV_ENUM_CLASS_ENT(ModuleSubstreamKind, FuncMDTokenMap),
-    CV_ENUM_CLASS_ENT(ModuleSubstreamKind, TypeMDTokenMap),
-    CV_ENUM_CLASS_ENT(ModuleSubstreamKind, MergedAssemblyInput),
-    CV_ENUM_CLASS_ENT(ModuleSubstreamKind, CoffSymbolRVA),
+    CV_ENUM_CLASS_ENT(ModuleDebugFragmentKind, None),
+    CV_ENUM_CLASS_ENT(ModuleDebugFragmentKind, Symbols),
+    CV_ENUM_CLASS_ENT(ModuleDebugFragmentKind, Lines),
+    CV_ENUM_CLASS_ENT(ModuleDebugFragmentKind, StringTable),
+    CV_ENUM_CLASS_ENT(ModuleDebugFragmentKind, FileChecksums),
+    CV_ENUM_CLASS_ENT(ModuleDebugFragmentKind, FrameData),
+    CV_ENUM_CLASS_ENT(ModuleDebugFragmentKind, InlineeLines),
+    CV_ENUM_CLASS_ENT(ModuleDebugFragmentKind, CrossScopeImports),
+    CV_ENUM_CLASS_ENT(ModuleDebugFragmentKind, CrossScopeExports),
+    CV_ENUM_CLASS_ENT(ModuleDebugFragmentKind, ILLines),
+    CV_ENUM_CLASS_ENT(ModuleDebugFragmentKind, FuncMDTokenMap),
+    CV_ENUM_CLASS_ENT(ModuleDebugFragmentKind, TypeMDTokenMap),
+    CV_ENUM_CLASS_ENT(ModuleDebugFragmentKind, MergedAssemblyInput),
+    CV_ENUM_CLASS_ENT(ModuleDebugFragmentKind, CoffSymbolRVA),
 };
 
 static const EnumEntry<uint16_t> ExportSymFlagNames[] = {
     CV_ENUM_CLASS_ENT(ExportFlags, IsConstant),
     CV_ENUM_CLASS_ENT(ExportFlags, IsData),
     CV_ENUM_CLASS_ENT(ExportFlags, IsPrivate),
     CV_ENUM_CLASS_ENT(ExportFlags, HasNoName),
     CV_ENUM_CLASS_ENT(ExportFlags, HasExplicitOrdinal),

llvm/lib/DebugInfo/CodeView/ModuleDebugFragment.cpp

+//===- ModuleDebugFragment.cpp --------------------------------------*- C++
+//-*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/DebugInfo/CodeView/ModuleDebugFragment.h"
+
+#include "llvm/Support/BinaryStreamReader.h"
+
+using namespace llvm;
+using namespace llvm::codeview;
+
+ModuleDebugFragment::ModuleDebugFragment()
+    : Kind(ModuleDebugFragmentKind::None) {}
+
+ModuleDebugFragment::ModuleDebugFragment(ModuleDebugFragmentKind Kind,
+                                         BinaryStreamRef Data)
+    : Kind(Kind), Data(Data) {}
+
+Error ModuleDebugFragment::initialize(BinaryStreamRef Stream,
+                                      ModuleDebugFragment &Info) {
+  const ModuleDebugFragmentHeader *Header;
+  BinaryStreamReader Reader(Stream);
+  if (auto EC = Reader.readObject(Header))
+    return EC;
+
+  ModuleDebugFragmentKind Kind =
+      static_cast<ModuleDebugFragmentKind>(uint32_t(Header->Kind));
+  if (auto EC = Reader.readStreamRef(Info.Data, Header->Length))
+    return EC;
+  Info.Kind = Kind;
+  return Error::success();
+}
+
+uint32_t ModuleDebugFragment::getRecordLength() const {
+  return sizeof(ModuleDebugFragmentHeader) + Data.getLength();
+}
+
+ModuleDebugFragmentKind ModuleDebugFragment::kind() const { return Kind; }
+
+BinaryStreamRef ModuleDebugFragment::getRecordData() const { return Data; }

llvm/lib/DebugInfo/CodeView/ModuleDebugFragmentVisitor.cpp

+//===- ModuleDebugFragmentVisitor.cpp ---------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/DebugInfo/CodeView/ModuleDebugFragmentVisitor.h"
+#include "llvm/Support/BinaryStreamReader.h"
+#include "llvm/Support/BinaryStreamRef.h"
+
+using namespace llvm;
+using namespace llvm::codeview;
+
+Error ModuleDebugFragmentVisitor::visitSymbols(BinaryStreamRef Data) {
+  return visitUnknown(ModuleDebugFragmentKind::Symbols, Data);
+}
+Error ModuleDebugFragmentVisitor::visitLines(BinaryStreamRef Data,
+                                             const LineFragmentHeader *Header,
+                                             const LineInfoArray &Lines) {
+  return visitUnknown(ModuleDebugFragmentKind::Lines, Data);
+}
+Error ModuleDebugFragmentVisitor::visitStringTable(BinaryStreamRef Data) {
+  return visitUnknown(ModuleDebugFragmentKind::StringTable, Data);
+}
+Error ModuleDebugFragmentVisitor::visitFileChecksums(
+    BinaryStreamRef Data, const FileChecksumArray &Checksums) {
+  return visitUnknown(ModuleDebugFragmentKind::FileChecksums, Data);
+}
+Error ModuleDebugFragmentVisitor::visitFrameData(BinaryStreamRef Data) {
+  return visitUnknown(ModuleDebugFragmentKind::FrameData, Data);
+}
+Error ModuleDebugFragmentVisitor::visitInlineeLines(BinaryStreamRef Data) {
+  return visitUnknown(ModuleDebugFragmentKind::InlineeLines, Data);
+}
+Error ModuleDebugFragmentVisitor::visitCrossScopeImports(BinaryStreamRef Data) {
+  return visitUnknown(ModuleDebugFragmentKind::CrossScopeExports, Data);
+}
+Error ModuleDebugFragmentVisitor::visitCrossScopeExports(BinaryStreamRef Data) {
+  return visitUnknown(ModuleDebugFragmentKind::CrossScopeImports, Data);
+}
+Error ModuleDebugFragmentVisitor::visitILLines(BinaryStreamRef Data) {
+  return visitUnknown(ModuleDebugFragmentKind::ILLines, Data);
+}
+Error ModuleDebugFragmentVisitor::visitFuncMDTokenMap(BinaryStreamRef Data) {
+  return visitUnknown(ModuleDebugFragmentKind::FuncMDTokenMap, Data);
+}
+Error ModuleDebugFragmentVisitor::visitTypeMDTokenMap(BinaryStreamRef Data) {
+  return visitUnknown(ModuleDebugFragmentKind::TypeMDTokenMap, Data);
+}
+Error ModuleDebugFragmentVisitor::visitMergedAssemblyInput(
+    BinaryStreamRef Data) {
+  return visitUnknown(ModuleDebugFragmentKind::MergedAssemblyInput, Data);
+}
+Error ModuleDebugFragmentVisitor::visitCoffSymbolRVA(BinaryStreamRef Data) {
+  return visitUnknown(ModuleDebugFragmentKind::CoffSymbolRVA, Data);
+}
+
+Error llvm::codeview::visitModuleDebugFragment(const ModuleDebugFragment &R,
+                                               ModuleDebugFragmentVisitor &V) {
+  switch (R.kind()) {
+  case ModuleDebugFragmentKind::Symbols:
+    return V.visitSymbols(R.getRecordData());
+  case ModuleDebugFragmentKind::Lines: {
+    BinaryStreamReader Reader(R.getRecordData());
+    const LineFragmentHeader *Header;
+    if (auto EC = Reader.readObject(Header))
+      return EC;
+    VarStreamArrayExtractor<LineColumnEntry> E(Header);
+    LineInfoArray LineInfos(E);
+    if (auto EC = Reader.readArray(LineInfos, Reader.bytesRemaining()))
+      return EC;
+    return V.visitLines(R.getRecordData(), Header, LineInfos);
+  }
+  case ModuleDebugFragmentKind::StringTable:
+    return V.visitStringTable(R.getRecordData());
+  case ModuleDebugFragmentKind::FileChecksums: {
+    BinaryStreamReader Reader(R.getRecordData());
+    FileChecksumArray Checksums;
+    if (auto EC = Reader.readArray(Checksums, Reader.bytesRemaining()))
+      return EC;
+    return V.visitFileChecksums(R.getRecordData(), Checksums);
+  }
+  case ModuleDebugFragmentKind::FrameData:
+    return V.visitFrameData(R.getRecordData());
+  case ModuleDebugFragmentKind::InlineeLines:
+    return V.visitInlineeLines(R.getRecordData());
+  case ModuleDebugFragmentKind::CrossScopeImports:
+    return V.visitCrossScopeImports(R.getRecordData());
+  case ModuleDebugFragmentKind::CrossScopeExports:
+    return V.visitCrossScopeExports(R.getRecordData());
+  case ModuleDebugFragmentKind::ILLines:
+    return V.visitILLines(R.getRecordData());
+  case ModuleDebugFragmentKind::FuncMDTokenMap:
+    return V.visitFuncMDTokenMap(R.getRecordData());
+  case ModuleDebugFragmentKind::TypeMDTokenMap:
+    return V.visitTypeMDTokenMap(R.getRecordData());
+  case ModuleDebugFragmentKind::MergedAssemblyInput:
+    return V.visitMergedAssemblyInput(R.getRecordData());
+  case ModuleDebugFragmentKind::CoffSymbolRVA:
+    return V.visitCoffSymbolRVA(R.getRecordData());
+  default:
+    return V.visitUnknown(R.kind(), R.getRecordData());
+  }
+}

llvm/lib/DebugInfo/CodeView/ModuleSubstream.cpp

-//===- ModuleSubstream.cpp --------------------------------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/DebugInfo/CodeView/ModuleSubstream.h"
-
-#include "llvm/Support/BinaryStreamReader.h"
-
-using namespace llvm;
-using namespace llvm::codeview;
-
-ModuleSubstream::ModuleSubstream() : Kind(ModuleSubstreamKind::None) {}
-
-ModuleSubstream::ModuleSubstream(ModuleSubstreamKind Kind, BinaryStreamRef Data)
-    : Kind(Kind), Data(Data) {}
-
-Error ModuleSubstream::initialize(BinaryStreamRef Stream,
-                                  ModuleSubstream &Info) {
-  const ModuleSubsectionHeader *Header;
-  BinaryStreamReader Reader(Stream);
-  if (auto EC = Reader.readObject(Header))
-    return EC;
-
-  ModuleSubstreamKind Kind =
-      static_cast<ModuleSubstreamKind>(uint32_t(Header->Kind));
-  if (auto EC = Reader.readStreamRef(Info.Data, Header->Length))
-    return EC;
-  Info.Kind = Kind;
-  return Error::success();
-}
-
-uint32_t ModuleSubstream::getRecordLength() const {
-  return sizeof(ModuleSubsectionHeader) + Data.getLength();
-}
-
-ModuleSubstreamKind ModuleSubstream::getSubstreamKind() const { return Kind; }
-
-BinaryStreamRef ModuleSubstream::getRecordData() const { return Data; }

llvm/lib/DebugInfo/CodeView/ModuleSubstreamVisitor.cpp

-//===- ModuleSubstreamVisitor.cpp -------------------------------*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/DebugInfo/CodeView/ModuleSubstreamVisitor.h"
-#include "llvm/Support/BinaryStreamReader.h"
-#include "llvm/Support/BinaryStreamRef.h"
-
-using namespace llvm;
-using namespace llvm::codeview;
-
-Error IModuleSubstreamVisitor::visitSymbols(BinaryStreamRef Data) {
-  return visitUnknown(ModuleSubstreamKind::Symbols, Data);
-}
-Error IModuleSubstreamVisitor::visitLines(BinaryStreamRef Data,
-                                          const LineSubstreamHeader *Header,
-                                          const LineInfoArray &Lines) {
-  return visitUnknown(ModuleSubstreamKind::Lines, Data);
-}
-Error IModuleSubstreamVisitor::visitStringTable(BinaryStreamRef Data) {
-  return visitUnknown(ModuleSubstreamKind::StringTable, Data);
-}
-Error IModuleSubstreamVisitor::visitFileChecksums(
-    BinaryStreamRef Data, const FileChecksumArray &Checksums) {
-  return visitUnknown(ModuleSubstreamKind::FileChecksums, Data);
-}
-Error IModuleSubstreamVisitor::visitFrameData(BinaryStreamRef Data) {
-  return visitUnknown(ModuleSubstreamKind::FrameData, Data);
-}
-Error IModuleSubstreamVisitor::visitInlineeLines(BinaryStreamRef Data) {
-  return visitUnknown(ModuleSubstreamKind::InlineeLines, Data);
-}
-Error IModuleSubstreamVisitor::visitCrossScopeImports(BinaryStreamRef Data) {
-  return visitUnknown(ModuleSubstreamKind::CrossScopeExports, Data);
-}
-Error IModuleSubstreamVisitor::visitCrossScopeExports(BinaryStreamRef Data) {
-  return visitUnknown(ModuleSubstreamKind::CrossScopeImports, Data);
-}
-Error IModuleSubstreamVisitor::visitILLines(BinaryStreamRef Data) {
-  return visitUnknown(ModuleSubstreamKind::ILLines, Data);
-}
-Error IModuleSubstreamVisitor::visitFuncMDTokenMap(BinaryStreamRef Data) {
-  return visitUnknown(ModuleSubstreamKind::FuncMDTokenMap, Data);
-}
-Error IModuleSubstreamVisitor::visitTypeMDTokenMap(BinaryStreamRef Data) {
-  return visitUnknown(ModuleSubstreamKind::TypeMDTokenMap, Data);
-}
-Error IModuleSubstreamVisitor::visitMergedAssemblyInput(BinaryStreamRef Data) {
-  return visitUnknown(ModuleSubstreamKind::MergedAssemblyInput, Data);
-}
-Error IModuleSubstreamVisitor::visitCoffSymbolRVA(BinaryStreamRef Data) {
-  return visitUnknown(ModuleSubstreamKind::CoffSymbolRVA, Data);
-}
-
-Error llvm::codeview::visitModuleSubstream(const ModuleSubstream &R,
-                                           IModuleSubstreamVisitor &V) {
-  switch (R.getSubstreamKind()) {
-  case ModuleSubstreamKind::Symbols:
-    return V.visitSymbols(R.getRecordData());
-  case ModuleSubstreamKind::Lines: {
-    BinaryStreamReader Reader(R.getRecordData());
-    const LineSubstreamHeader *Header;
-    if (auto EC = Reader.readObject(Header))
-      return EC;
-    VarStreamArrayExtractor<LineColumnEntry> E(Header);
-    LineInfoArray LineInfos(E);
-    if (auto EC = Reader.readArray(LineInfos, Reader.bytesRemaining()))
-      return EC;
-    return V.visitLines(R.getRecordData(), Header, LineInfos);
-  }
-  case ModuleSubstreamKind::StringTable:
-    return V.visitStringTable(R.getRecordData());
-  case ModuleSubstreamKind::FileChecksums: {
-    BinaryStreamReader Reader(R.getRecordData());
-    FileChecksumArray Checksums;
-    if (auto EC = Reader.readArray(Checksums, Reader.bytesRemaining()))
-      return EC;
-    return V.visitFileChecksums(R.getRecordData(), Checksums);
-  }
-  case ModuleSubstreamKind::FrameData:
-    return V.visitFrameData(R.getRecordData());
-  case ModuleSubstreamKind::InlineeLines:
-    return V.visitInlineeLines(R.getRecordData());
-  case ModuleSubstreamKind::CrossScopeImports:
-    return V.visitCrossScopeImports(R.getRecordData());
-  case ModuleSubstreamKind::CrossScopeExports:
-    return V.visitCrossScopeExports(R.getRecordData());
-  case ModuleSubstreamKind::ILLines:
-    return V.visitILLines(R.getRecordData());
-  case ModuleSubstreamKind::FuncMDTokenMap:
-    return V.visitFuncMDTokenMap(R.getRecordData());
-  case ModuleSubstreamKind::TypeMDTokenMap:
-    return V.visitTypeMDTokenMap(R.getRecordData());
-  case ModuleSubstreamKind::MergedAssemblyInput:
-    return V.visitMergedAssemblyInput(R.getRecordData());
-  case ModuleSubstreamKind::CoffSymbolRVA:
-    return V.visitCoffSymbolRVA(R.getRecordData());
-  default:
-    return V.visitUnknown(R.getSubstreamKind(), R.getRecordData());
-  }
-}

llvm/lib/DebugInfo/PDB/CMakeLists.txt

add_pdb_impl_folder(DIA
     DIA/DIASession.cpp
     DIA/DIASourceFile.cpp
     )
 
     set(LIBPDB_ADDITIONAL_HEADER_DIRS "${LLVM_MAIN_INCLUDE_DIR}/llvm/DebugInfo/PDB/DIA")
 endif()
 
 add_pdb_impl_folder(Native
+  Native/DbiModuleDescriptor.cpp
+  Native/DbiModuleDescriptorBuilder.cpp
   Native/DbiStream.cpp
   Native/DbiStreamBuilder.cpp
   Native/EnumTables.cpp
   Native/GlobalsStream.cpp
   Native/GSI.cpp
   Native/Hash.cpp
   Native/HashTable.cpp
   Native/InfoStream.cpp
   Native/InfoStreamBuilder.cpp
-  Native/ModInfo.cpp
-  Native/ModInfoBuilder.cpp
-  Native/ModStream.cpp
+  Native/ModuleDebugStream.cpp
   Native/NativeCompilandSymbol.cpp
   Native/NativeEnumModules.cpp
   Native/NativeExeSymbol.cpp
   Native/NativeRawSymbol.cpp
   Native/NamedStreamMap.cpp
   Native/NativeSession.cpp
   Native/PDBFile.cpp
   Native/PDBFileBuilder.cpp

llvm/lib/DebugInfo/PDB/Native/DbiModuleDescriptor.cpp

+//===- DbiModuleDescriptor.cpp - PDB module information -------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/DebugInfo/PDB/Native/DbiModuleDescriptor.h"
+#include "llvm/DebugInfo/PDB/Native/RawTypes.h"
+#include "llvm/Support/BinaryStreamReader.h"
+#include "llvm/Support/Endian.h"
+#include "llvm/Support/Error.h"
+#include "llvm/Support/MathExtras.h"
+#include <cstdint>
+
+using namespace llvm;
+using namespace llvm::pdb;
+using namespace llvm::support;
+
+DbiModuleDescriptor::DbiModuleDescriptor() = default;
+
+DbiModuleDescriptor::DbiModuleDescriptor(const DbiModuleDescriptor &Info) =
+    default;
+
+DbiModuleDescriptor::~DbiModuleDescriptor() = default;
+
+Error DbiModuleDescriptor::initialize(BinaryStreamRef Stream,
+                                      DbiModuleDescriptor &Info) {
+  BinaryStreamReader Reader(Stream);
+  if (auto EC = Reader.readObject(Info.Layout))
+    return EC;
+
+  if (auto EC = Reader.readCString(Info.ModuleName))
+    return EC;
+
+  if (auto EC = Reader.readCString(Info.ObjFileName))
+    return EC;
+  return Error::success();
+}
+
+bool DbiModuleDescriptor::hasECInfo() const {
+  return (Layout->Flags & ModInfoFlags::HasECFlagMask) != 0;
+}
+
+uint16_t DbiModuleDescriptor::getTypeServerIndex() const {
+  return (Layout->Flags & ModInfoFlags::TypeServerIndexMask) >>
+         ModInfoFlags::TypeServerIndexShift;
+}
+
+uint16_t DbiModuleDescriptor::getModuleStreamIndex() const {
+  return Layout->ModDiStream;
+}
+
+uint32_t DbiModuleDescriptor::getSymbolDebugInfoByteSize() const {
+  return Layout->SymBytes;
+}
+
+uint32_t DbiModuleDescriptor::getLineInfoByteSize() const {
+  return Layout->LineBytes;
+}
+
+uint32_t DbiModuleDescriptor::getC13LineInfoByteSize() const {
+  return Layout->C13Bytes;
+}
+
+uint32_t DbiModuleDescriptor::getNumberOfFiles() const {
+  return Layout->NumFiles;
+}
+
+uint32_t DbiModuleDescriptor::getSourceFileNameIndex() const {
+  return Layout->SrcFileNameNI;
+}
+
+uint32_t DbiModuleDescriptor::getPdbFilePathNameIndex() const {
+  return Layout->PdbFilePathNI;
+}
+
+StringRef DbiModuleDescriptor::getModuleName() const { return ModuleName; }
+
+StringRef DbiModuleDescriptor::getObjFileName() const { return ObjFileName; }
+
+uint32_t DbiModuleDescriptor::getRecordLength() const {
+  uint32_t M = ModuleName.str().size() + 1;
+  uint32_t O = ObjFileName.str().size() + 1;
+  uint32_t Size = sizeof(ModuleInfoHeader) + M + O;
+  Size = alignTo(Size, 4);
+  return Size;
+}

llvm/lib/DebugInfo/PDB/Native/DbiModuleDescriptorBuilder.cpp

+//===- DbiModuleDescriptorBuilder.cpp - PDB Mod Info Creation ---*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/DebugInfo/PDB/Native/DbiModuleDescriptorBuilder.h"
+
+#include "llvm/ADT/ArrayRef.h"
+#include "llvm/DebugInfo/MSF/MSFBuilder.h"
+#include "llvm/DebugInfo/MSF/MSFCommon.h"
+#include "llvm/DebugInfo/MSF/MappedBlockStream.h"
+#include "llvm/DebugInfo/PDB/Native/DbiModuleDescriptor.h"
+#include "llvm/DebugInfo/PDB/Native/RawConstants.h"
+#include "llvm/DebugInfo/PDB/Native/RawError.h"
+#include "llvm/Support/BinaryItemStream.h"
+#include "llvm/Support/BinaryStreamWriter.h"
+#include "llvm/Support/COFF.h"
+
+using namespace llvm;
+using namespace llvm::codeview;
+using namespace llvm::msf;
+using namespace llvm::pdb;
+
+namespace llvm {
+template <> struct BinaryItemTraits<CVSymbol> {
+  static size_t length(const CVSymbol &Item) { return Item.RecordData.size(); }
+
+  static ArrayRef<uint8_t> bytes(const CVSymbol &Item) {
+    return Item.RecordData;
+  }
+};
+}
+
+static uint32_t calculateDiSymbolStreamSize(uint32_t SymbolByteSize) {
+  uint32_t Size = sizeof(uint32_t); // Signature
+  Size += SymbolByteSize;           // Symbol Data
+  Size += 0;                        // TODO: Layout.LineBytes
+  Size += 0;                        // TODO: Layout.C13Bytes
+  Size += sizeof(uint32_t);         // GlobalRefs substream size (always 0)
+  Size += 0;                        // GlobalRefs substream bytes
+  return Size;
+}
+
+DbiModuleDescriptorBuilder::DbiModuleDescriptorBuilder(StringRef ModuleName,
+                                                       uint32_t ModIndex,
+                                                       msf::MSFBuilder &Msf)
+    : MSF(Msf), ModuleName(ModuleName) {
+  Layout.Mod = ModIndex;
+}
+
+uint16_t DbiModuleDescriptorBuilder::getStreamIndex() const {
+  return Layout.ModDiStream;
+}
+
+void DbiModuleDescriptorBuilder::setObjFileName(StringRef Name) {
+  ObjFileName = Name;
+}
+
+void DbiModuleDescriptorBuilder::addSymbol(CVSymbol Symbol) {
+  Symbols.push_back(Symbol);
+  SymbolByteSize += Symbol.data().size();
+}
+
+void DbiModuleDescriptorBuilder::addSourceFile(StringRef Path) {
+  SourceFiles.push_back(Path);
+}
+
+uint32_t DbiModuleDescriptorBuilder::calculateSerializedLength() const {
+  uint32_t L = sizeof(Layout);
+  uint32_t M = ModuleName.size() + 1;
+  uint32_t O = ObjFileName.size() + 1;
+  return alignTo(L + M + O, sizeof(uint32_t));
+}
+
+void DbiModuleDescriptorBuilder::finalize() {
+  Layout.C13Bytes = 0;
+  Layout.FileNameOffs = 0; // TODO: Fix this
+  Layout.Flags = 0;        // TODO: Fix this
+  Layout.LineBytes = 0;
+  (void)Layout.Mod;         // Set in constructor
+  (void)Layout.ModDiStream; // Set in finalizeMsfLayout
+  Layout.NumFiles = SourceFiles.size();
+  Layout.PdbFilePathNI = 0;
+  Layout.SrcFileNameNI = 0;
+
+  // This value includes both the signature field as well as the record bytes
+  // from the symbol stream.
+  Layout.SymBytes = SymbolByteSize + sizeof(uint32_t);
+}
+
+Error DbiModuleDescriptorBuilder::finalizeMsfLayout() {
+  this->Layout.ModDiStream = kInvalidStreamIndex;
+  auto ExpectedSN = MSF.addStream(calculateDiSymbolStreamSize(SymbolByteSize));
+  if (!ExpectedSN)
+    return ExpectedSN.takeError();
+  Layout.ModDiStream = *ExpectedSN;
+  return Error::success();
+}
+
+Error DbiModuleDescriptorBuilder::commit(BinaryStreamWriter &ModiWriter,
+                                         const msf::MSFLayout &MsfLayout,
+                                         WritableBinaryStreamRef MsfBuffer) {
+  // We write the Modi record to the `ModiWriter`, but we additionally write its
+  // symbol stream to a brand new stream.
+  if (auto EC = ModiWriter.writeObject(Layout))
+    return EC;
+  if (auto EC = ModiWriter.writeCString(ModuleName))
+    return EC;
+  if (auto EC = ModiWriter.writeCString(ObjFileName))
+    return EC;
+  if (auto EC = ModiWriter.padToAlignment(sizeof(uint32_t)))
+    return EC;
+
+  if (Layout.ModDiStream != kInvalidStreamIndex) {
+    auto NS = WritableMappedBlockStream::createIndexedStream(
+        MsfLayout, MsfBuffer, Layout.ModDiStream);
+    WritableBinaryStreamRef Ref(*NS);
+    BinaryStreamWriter SymbolWriter(Ref);
+    // Write the symbols.
+    if (auto EC =
+            SymbolWriter.writeInteger<uint32_t>(COFF::DEBUG_SECTION_MAGIC))
+      return EC;
+    BinaryItemStream<CVSymbol> Records(llvm::support::endianness::little);
+    Records.setItems(Symbols);
+    BinaryStreamRef RecordsRef(Records);
+    if (auto EC = SymbolWriter.writeStreamRef(RecordsRef))
+      return EC;
+    // TODO: Write C11 Line data
+    // TODO: Write C13 Line data
+    // TODO: Figure out what GlobalRefs substream actually is and populate it.
+    if (auto EC = SymbolWriter.writeInteger<uint32_t>(0))
+      return EC;
+    if (SymbolWriter.bytesRemaining() > 0)
+      return make_error<RawError>(raw_error_code::stream_too_long);
+  }
+  return Error::success();
+}

llvm/lib/DebugInfo/PDB/Native/DbiStream.cpp

 //===- DbiStream.cpp - PDB Dbi Stream (Stream 3) Access -------------------===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 
 #include "llvm/DebugInfo/PDB/Native/DbiStream.h"
 #include "llvm/ADT/StringRef.h"
 #include "llvm/DebugInfo/MSF/MappedBlockStream.h"
+#include "llvm/DebugInfo/PDB/Native/DbiModuleDescriptor.h"
 #include "llvm/DebugInfo/PDB/Native/ISectionContribVisitor.h"
 #include "llvm/DebugInfo/PDB/Native/InfoStream.h"
-#include "llvm/DebugInfo/PDB/Native/ModInfo.h"
 #include "llvm/DebugInfo/PDB/Native/PDBFile.h"
 #include "llvm/DebugInfo/PDB/Native/RawConstants.h"
 #include "llvm/DebugInfo/PDB/Native/RawError.h"
 #include "llvm/DebugInfo/PDB/Native/RawTypes.h"
 #include "llvm/DebugInfo/PDB/PDBTypes.h"
 #include "llvm/Object/COFF.h"
 #include "llvm/Support/BinaryStreamArray.h"
 #include "llvm/Support/BinaryStreamReader.h"
Error DbiStream::initializeSectionContributionData() {
   return make_error<RawError>(raw_error_code::feature_unsupported,
                               "Unsupported DBI Section Contribution version");
 }
 
 Error DbiStream::initializeModInfoArray() {
   if (ModInfoSubstream.getLength() == 0)
     return Error::success();
 
-  // Since each ModInfo in the stream is a variable length, we have to iterate
+  // Since each DbiModuleDescriptor in the stream is a variable length, we have
+  // to iterate
   // them to know how many there actually are.
   BinaryStreamReader Reader(ModInfoSubstream);
 
-  VarStreamArray<ModInfo> ModInfoArray;
+  VarStreamArray<DbiModuleDescriptor> ModInfoArray;
   if (auto EC = Reader.readArray(ModInfoArray, ModInfoSubstream.getLength()))
     return EC;
   for (auto &Info : ModInfoArray) {
     ModuleInfos.emplace_back(Info);
   }
 
   return Error::success();
 }
if (auto EC = FISR.readArray(ModFileCountArray, ModuleInfos.size()))
     return EC;
 
   // Compute the real number of source files.
   uint32_t NumSourceFiles = 0;
   for (auto Count : ModFileCountArray)
     NumSourceFiles += Count;
 
   // This is the array that in the reference implementation corresponds to
-  // `ModInfo::FileLayout::FileNameOffs`, which is commented there as being a
+  // `DbiModuleDescriptor::FileLayout::FileNameOffs`, which is commented there
+  // as being a
   // pointer. Due to the mentioned problems of pointers causing difficulty
   // when reading from the file on 64-bit systems, we continue to ignore that
-  // field in `ModInfo`, and instead build a vector of StringRefs and stores
+  // field in `DbiModuleDescriptor`, and instead build a vector of StringRefs
+  // and stores
   // them in `ModuleInfoEx`.  The value written to and read from the file is
   // not used anyway, it is only there as a way to store the offsets for the
   // purposes of later accessing the names at runtime.
   if (auto EC = FISR.readArray(FileNameOffsets, NumSourceFiles))
     return EC;
 
   if (auto EC = FISR.readStreamRef(NamesBuffer))
     return EC;

llvm/lib/DebugInfo/PDB/Native/DbiStreamBuilder.cpp

 //===- DbiStreamBuilder.cpp - PDB Dbi Stream Creation -----------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 
 #include "llvm/DebugInfo/PDB/Native/DbiStreamBuilder.h"
 
 #include "llvm/ADT/ArrayRef.h"
 #include "llvm/DebugInfo/MSF/MSFBuilder.h"
 #include "llvm/DebugInfo/MSF/MappedBlockStream.h"
+#include "llvm/DebugInfo/PDB/Native/DbiModuleDescriptorBuilder.h"
 #include "llvm/DebugInfo/PDB/Native/DbiStream.h"
-#include "llvm/DebugInfo/PDB/Native/ModInfoBuilder.h"
 #include "llvm/DebugInfo/PDB/Native/RawError.h"
 #include "llvm/Object/COFF.h"
 #include "llvm/Support/BinaryStreamWriter.h"
 #include "llvm/Support/COFF.h"
 
 using namespace llvm;
 using namespace llvm::codeview;
 using namespace llvm::msf;

 
 uint32_t DbiStreamBuilder::calculateSerializedLength() const {
   // For now we only support serializing the header.
   return sizeof(DbiStreamHeader) + calculateFileInfoSubstreamSize() +
          calculateModiSubstreamSize() + calculateSectionContribsStreamSize() +
          calculateSectionMapStreamSize() + calculateDbgStreamsSize();
 }
 
-Expected<ModInfoBuilder &>
+Expected<DbiModuleDescriptorBuilder &>
 DbiStreamBuilder::addModuleInfo(StringRef ModuleName) {
   uint32_t Index = ModiList.size();
-  auto MIB = llvm::make_unique<ModInfoBuilder>(ModuleName, Index, Msf);
+  auto MIB =
+      llvm::make_unique<DbiModuleDescriptorBuilder>(ModuleName, Index, Msf);
   auto M = MIB.get();
   auto Result = ModiMap.insert(std::make_pair(ModuleName, std::move(MIB)));
 
   if (!Result.second)
     return make_error<RawError>(raw_error_code::duplicate_entry,
                                 "The specified module already exists");
   ModiList.push_back(M);
   return *M;

llvm/lib/DebugInfo/PDB/Native/ModInfo.cpp

-//===- ModInfo.cpp - PDB module information -------------------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/DebugInfo/PDB/Native/ModInfo.h"
-#include "llvm/DebugInfo/PDB/Native/RawTypes.h"
-#include "llvm/Support/BinaryStreamReader.h"
-#include "llvm/Support/Endian.h"
-#include "llvm/Support/Error.h"
-#include "llvm/Support/MathExtras.h"
-#include <cstdint>
-
-using namespace llvm;
-using namespace llvm::pdb;
-using namespace llvm::support;
-
-ModInfo::ModInfo() = default;
-
-ModInfo::ModInfo(const ModInfo &Info) = default;
-
-ModInfo::~ModInfo() = default;
-
-Error ModInfo::initialize(BinaryStreamRef Stream, ModInfo &Info) {
-  BinaryStreamReader Reader(Stream);
-  if (auto EC = Reader.readObject(Info.Layout))
-    return EC;
-
-  if (auto EC = Reader.readCString(Info.ModuleName))
-    return EC;
-
-  if (auto EC = Reader.readCString(Info.ObjFileName))
-    return EC;
-  return Error::success();
-}
-
-bool ModInfo::hasECInfo() const {
-  return (Layout->Flags & ModInfoFlags::HasECFlagMask) != 0;
-}
-
-uint16_t ModInfo::getTypeServerIndex() const {
-  return (Layout->Flags & ModInfoFlags::TypeServerIndexMask) >>
-         ModInfoFlags::TypeServerIndexShift;
-}
-
-uint16_t ModInfo::getModuleStreamIndex() const { return Layout->ModDiStream; }
-
-uint32_t ModInfo::getSymbolDebugInfoByteSize() const {
-  return Layout->SymBytes;
-}
-
-uint32_t ModInfo::getLineInfoByteSize() const { return Layout->LineBytes; }
-
-uint32_t ModInfo::getC13LineInfoByteSize() const { return Layout->C13Bytes; }
-
-uint32_t ModInfo::getNumberOfFiles() const { return Layout->NumFiles; }
-
-uint32_t ModInfo::getSourceFileNameIndex() const {
-  return Layout->SrcFileNameNI;
-}
-
-uint32_t ModInfo::getPdbFilePathNameIndex() const {
-  return Layout->PdbFilePathNI;
-}
-
-StringRef ModInfo::getModuleName() const { return ModuleName; }
-
-StringRef ModInfo::getObjFileName() const { return ObjFileName; }
-
-uint32_t ModInfo::getRecordLength() const {
-  uint32_t M = ModuleName.str().size() + 1;
-  uint32_t O = ObjFileName.str().size() + 1;
-  uint32_t Size = sizeof(ModuleInfoHeader) + M + O;
-  Size = alignTo(Size, 4);
-  return Size;
-}

llvm/lib/DebugInfo/PDB/Native/ModInfoBuilder.cpp

-//===- ModInfoBuilder.cpp - PDB Module Info Stream Creation -----*- C++ -*-===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/DebugInfo/PDB/Native/ModInfoBuilder.h"
-
-#include "llvm/ADT/ArrayRef.h"
-#include "llvm/DebugInfo/MSF/MSFBuilder.h"
-#include "llvm/DebugInfo/MSF/MSFCommon.h"
-#include "llvm/DebugInfo/MSF/MappedBlockStream.h"
-#include "llvm/DebugInfo/PDB/Native/ModInfo.h"
-#include "llvm/DebugInfo/PDB/Native/RawConstants.h"
-#include "llvm/DebugInfo/PDB/Native/RawError.h"
-#include "llvm/Support/BinaryItemStream.h"
-#include "llvm/Support/BinaryStreamWriter.h"
-#include "llvm/Support/COFF.h"
-
-using namespace llvm;
-using namespace llvm::codeview;
-using namespace llvm::msf;
-using namespace llvm::pdb;
-
-namespace llvm {
-template <> struct BinaryItemTraits<CVSymbol> {
-  static size_t length(const CVSymbol &Item) { return Item.RecordData.size(); }
-
-  static ArrayRef<uint8_t> bytes(const CVSymbol &Item) {
-    return Item.RecordData;
-  }
-};
-}
-
-static uint32_t calculateDiSymbolStreamSize(uint32_t SymbolByteSize) {
-  uint32_t Size = sizeof(uint32_t); // Signature
-  Size += SymbolByteSize;           // Symbol Data
-  Size += 0;                        // TODO: Layout.LineBytes
-  Size += 0;                        // TODO: Layout.C13Bytes
-  Size += sizeof(uint32_t);         // GlobalRefs substream size (always 0)
-  Size += 0;                        // GlobalRefs substream bytes
-  return Size;
-}
-
-ModInfoBuilder::ModInfoBuilder(StringRef ModuleName, uint32_t ModIndex,
-                               msf::MSFBuilder &Msf)
-    : MSF(Msf), ModuleName(ModuleName) {
-  Layout.Mod = ModIndex;
-}
-
-uint16_t ModInfoBuilder::getStreamIndex() const { return Layout.ModDiStream; }
-
-void ModInfoBuilder::setObjFileName(StringRef Name) { ObjFileName = Name; }
-
-void ModInfoBuilder::addSymbol(CVSymbol Symbol) {
-  Symbols.push_back(Symbol);
-  SymbolByteSize += Symbol.data().size();
-}
-
-void ModInfoBuilder::addSourceFile(StringRef Path) {
-  SourceFiles.push_back(Path);
-}
-
-uint32_t ModInfoBuilder::calculateSerializedLength() const {
-  uint32_t L = sizeof(Layout);
-  uint32_t M = ModuleName.size() + 1;
-  uint32_t O = ObjFileName.size() + 1;
-  return alignTo(L + M + O, sizeof(uint32_t));
-}
-
-void ModInfoBuilder::finalize() {
-  Layout.C13Bytes = 0;
-  Layout.FileNameOffs = 0; // TODO: Fix this
-  Layout.Flags = 0;        // TODO: Fix this
-  Layout.LineBytes = 0;
-  (void)Layout.Mod;         // Set in constructor
-  (void)Layout.ModDiStream; // Set in finalizeMsfLayout
-  Layout.NumFiles = SourceFiles.size();
-  Layout.PdbFilePathNI = 0;
-  Layout.SrcFileNameNI = 0;
-
-  // This value includes both the signature field as well as the record bytes
-  // from the symbol stream.
-  Layout.SymBytes = SymbolByteSize + sizeof(uint32_t);
-}
-
-Error ModInfoBuilder::finalizeMsfLayout() {
-  this->Layout.ModDiStream = kInvalidStreamIndex;
-  auto ExpectedSN = MSF.addStream(calculateDiSymbolStreamSize(SymbolByteSize));
-  if (!ExpectedSN)
-    return ExpectedSN.takeError();
-  Layout.ModDiStream = *ExpectedSN;
-  return Error::success();
-}
-
-Error ModInfoBuilder::commit(BinaryStreamWriter &ModiWriter,
-                             const msf::MSFLayout &MsfLayout,
-                             WritableBinaryStreamRef MsfBuffer) {
-  // We write the Modi record to the `ModiWriter`, but we additionally write its
-  // symbol stream to a brand new stream.
-  if (auto EC = ModiWriter.writeObject(Layout))
-    return EC;
-  if (auto EC = ModiWriter.writeCString(ModuleName))
-    return EC;
-  if (auto EC = ModiWriter.writeCString(ObjFileName))
-    return EC;
-  if (auto EC = ModiWriter.padToAlignment(sizeof(uint32_t)))
-    return EC;
-
-  if (Layout.ModDiStream != kInvalidStreamIndex) {
-    auto NS = WritableMappedBlockStream::createIndexedStream(
-        MsfLayout, MsfBuffer, Layout.ModDiStream);
-    WritableBinaryStreamRef Ref(*NS);
-    BinaryStreamWriter SymbolWriter(Ref);
-    // Write the symbols.
-    if (auto EC =
-            SymbolWriter.writeInteger<uint32_t>(COFF::DEBUG_SECTION_MAGIC))
-      return EC;
-    BinaryItemStream<CVSymbol> Records(llvm::support::endianness::little);
-    Records.setItems(Symbols);
-    BinaryStreamRef RecordsRef(Records);
-    if (auto EC = SymbolWriter.writeStreamRef(RecordsRef))
-      return EC;
-    // TODO: Write C11 Line data
-    // TODO: Write C13 Line data
-    // TODO: Figure out what GlobalRefs substream actually is and populate it.
-    if (auto EC = SymbolWriter.writeInteger<uint32_t>(0))
-      return EC;
-    if (SymbolWriter.bytesRemaining() > 0)
-      return make_error<RawError>(raw_error_code::stream_too_long);
-  }
-  return Error::success();
-}

llvm/lib/DebugInfo/PDB/Native/ModStream.cpp

-//===- ModStream.cpp - PDB Module Info Stream Access ----------------------===//
-//
-//                     The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include "llvm/DebugInfo/PDB/Native/ModStream.h"
-#include "llvm/ADT/iterator_range.h"
-#include "llvm/DebugInfo/CodeView/SymbolRecord.h"
-#include "llvm/DebugInfo/PDB/Native/ModInfo.h"
-#include "llvm/DebugInfo/PDB/Native/PDBFile.h"
-#include "llvm/DebugInfo/PDB/Native/RawError.h"
-#include "llvm/DebugInfo/PDB/Native/RawTypes.h"
-#include "llvm/Support/BinaryStreamReader.h"
-#include "llvm/Support/BinaryStreamRef.h"
-#include "llvm/Support/Error.h"
-#include <algorithm>
-#include <cstdint>
-
-using namespace llvm;
-using namespace llvm::msf;
-using namespace llvm::pdb;
-
-ModStream::ModStream(const ModInfo &Module,
-                     std::unique_ptr<MappedBlockStream> Stream)
-    : Mod(Module), Stream(std::move(Stream)) {}
-
-ModStream::~ModStream() = default;
-
-Error ModStream::reload() {
-  BinaryStreamReader Reader(*Stream);
-
-  uint32_t SymbolSize = Mod.getSymbolDebugInfoByteSize();
-  uint32_t C11Size = Mod.getLineInfoByteSize();
-  uint32_t C13Size = Mod.getC13LineInfoByteSize();
-
-  if (C11Size > 0 && C13Size > 0)
-    return make_error<RawError>(raw_error_code::corrupt_file,
-                                "Module has both C11 and C13 line info");
-
-  BinaryStreamRef S;
-
-  if (auto EC = Reader.readInteger(Signature))
-    return EC;
-  if (auto EC = Reader.readArray(SymbolsSubstream, SymbolSize - 4))
-    return EC;
-
-  if (auto EC = Reader.readStreamRef(LinesSubstream, C11Size))
-    return EC;
-  if (auto EC = Reader.readStreamRef(C13LinesSubstream, C13Size))
-    return EC;
-
-  BinaryStreamReader LineReader(C13LinesSubstream);
-  if (auto EC = LineReader.readArray(LineInfo, LineReader.bytesRemaining()))
-    return EC;
-
-  uint32_t GlobalRefsSize;
-  if (auto EC = Reader.readInteger(GlobalRefsSize))
-    return EC;
-  if (auto EC = Reader.readStreamRef(GlobalRefsSubstream, GlobalRefsSize))
-    return EC;
-  if (Reader.bytesRemaining() > 0)
-    return make_error<RawError>(raw_error_code::corrupt_file,
-                                "Unexpected bytes in module stream.");
-
-  return Error::success();
-}
-
-iterator_range<codeview::CVSymbolArray::Iterator>
-ModStream::symbols(bool *HadError) const {
-  // It's OK if the stream is empty.
-  if (SymbolsSubstream.getUnderlyingStream().getLength() == 0)
-    return make_range(SymbolsSubstream.end(), SymbolsSubstream.end());
-  return make_range(SymbolsSubstream.begin(HadError), SymbolsSubstream.end());
-}
-
-iterator_range<codeview::ModuleSubstreamArray::Iterator>
-ModStream::lines(bool *HadError) const {
-  return make_range(LineInfo.begin(HadError), LineInfo.end());
-}
-
-bool ModStream::hasLineInfo() const {
-  return C13LinesSubstream.getLength() > 0 || LinesSubstream.getLength() > 0;
-}
-
-Error ModStream::commit() { return Error::success(); }

llvm/lib/DebugInfo/PDB/Native/ModuleDebugStream.cpp

+//===- ModuleDebugStream.cpp - PDB Module Info Stream Access --------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/DebugInfo/PDB/Native/ModuleDebugStream.h"
+#include "llvm/ADT/iterator_range.h"
+#include "llvm/DebugInfo/CodeView/SymbolRecord.h"
+#include "llvm/DebugInfo/PDB/Native/DbiModuleDescriptor.h"
+#include "llvm/DebugInfo/PDB/Native/PDBFile.h"
+#include "llvm/DebugInfo/PDB/Native/RawError.h"
+#include "llvm/DebugInfo/PDB/Native/RawTypes.h"
+#include "llvm/Support/BinaryStreamReader.h"
+#include "llvm/Support/BinaryStreamRef.h"
+#include "llvm/Support/Error.h"
+#include <algorithm>
+#include <cstdint>
+
+using namespace llvm;
+using namespace llvm::msf;
+using namespace llvm::pdb;
+
+ModuleDebugStream::ModuleDebugStream(const DbiModuleDescriptor &Module,
+                                     std::unique_ptr<MappedBlockStream> Stream)
+    : Mod(Module), Stream(std::move(Stream)) {}
+
+ModuleDebugStream::~ModuleDebugStream() = default;
+
+Error ModuleDebugStream::reload() {
+  BinaryStreamReader Reader(*Stream);
+
+  uint32_t SymbolSize = Mod.getSymbolDebugInfoByteSize();
+  uint32_t C11Size = Mod.getLineInfoByteSize();
+  uint32_t C13Size = Mod.getC13LineInfoByteSize();
+
+  if (C11Size > 0 && C13Size > 0)
+    return make_error<RawError>(raw_error_code::corrupt_file,
+                                "Module has both C11 and C13 line info");
+
+  BinaryStreamRef S;
+
+  if (auto EC = Reader.readInteger(Signature))
+    return EC;
+  if (auto EC = Reader.readArray(SymbolsSubstream, SymbolSize - 4))
+    return EC;
+
+  if (auto EC = Reader.readStreamRef(LinesSubstream, C11Size))
+    return EC;
+  if (auto EC = Reader.readStreamRef(C13LinesSubstream, C13Size))
+    return EC;
+
+  BinaryStreamReader LineReader(C13LinesSubstream);
+  if (auto EC = LineReader.readArray(LineInfo, LineReader.bytesRemaining()))
+    return EC;
+
+  uint32_t GlobalRefsSize;
+  if (auto EC = Reader.readInteger(GlobalRefsSize))
+    return EC;
+  if (auto EC = Reader.readStreamRef(GlobalRefsSubstream, GlobalRefsSize))
+    return EC;
+  if (Reader.bytesRemaining() > 0)
+    return make_error<RawError>(raw_error_code::corrupt_file,
+                                "Unexpected bytes in module stream.");
+
+  return Error::success();
+}
+
+iterator_range<codeview::CVSymbolArray::Iterator>
+ModuleDebugStream::symbols(bool *HadError) const {
+  // It's OK if the stream is empty.
+  if (SymbolsSubstream.getUnderlyingStream().getLength() == 0)
+    return make_range(SymbolsSubstream.end(), SymbolsSubstream.end());
+  return make_range(SymbolsSubstream.begin(HadError), SymbolsSubstream.end());
+}
+
+iterator_range<codeview::ModuleDebugFragmentArray::Iterator>
+ModuleDebugStream::lines(bool *HadError) const {
+  return make_range(LineInfo.begin(HadError), LineInfo.end());
+}
+
+bool ModuleDebugStream::hasLineInfo() const {
+  return C13LinesSubstream.getLength() > 0 || LinesSubstream.getLength() > 0;
+}
+
+Error ModuleDebugStream::commit() { return Error::success(); }

llvm/lib/DebugInfo/Symbolize/Symbolize.cpp

 } // end anonymous namespace
 
 #if !defined(_MSC_VER)
 // Assume that __cxa_demangle is provided by libcxxabi (except for Windows).
 extern "C" char *__cxa_demangle(const char *mangled_name, char *output_buffer,
                                 size_t *length, int *status);
 #endif
 
-std::string LLVMSymbolizer::DemangleName(const std::string &Name,
-                                         const SymbolizableModule *ModInfo) {
+std::string
+LLVMSymbolizer::DemangleName(const std::string &Name,
+                             const SymbolizableModule *DbiModuleDescriptor) {
 #if !defined(_MSC_VER)
   // We can spoil names of symbols with C linkage, so use an heuristic
   // approach to check if the name should be demangled.
   if (Name.substr(0, 2) == "_Z") {
     int status = 0;
     char *DemangledName = __cxa_demangle(Name.c_str(), nullptr, nullptr, &status);
     if (status != 0)
       return Name;
DWORD result = ::UnDecorateSymbolName(
             UNDNAME_NO_ALLOCATION_LANGUAGE | // Strip __thiscall, __stdcall, etc
             UNDNAME_NO_THROW_SIGNATURES |    // Strip throw() specifications
             UNDNAME_NO_MEMBER_TYPE | // Strip virtual, static, etc specifiers
             UNDNAME_NO_MS_KEYWORDS | // Strip all MS extension keywords
             UNDNAME_NO_FUNCTION_RETURNS); // Strip function return types
     return (result == 0) ? Name : std::string(DemangledName);
   }
 #endif
-  if (ModInfo && ModInfo->isWin32Module())
+  if (DbiModuleDescriptor && DbiModuleDescriptor->isWin32Module())
     return std::string(demanglePE32ExternCFunc(Name));
   return Name;
 }
 
 } // namespace symbolize
 } // namespace llvm

llvm/lib/MC/MCCodeView.cpp

unsigned CodeViewContext::getStringTableOffset(StringRef S) {
   return I->second;
 }
 
 void CodeViewContext::emitStringTable(MCObjectStreamer &OS) {
   MCContext &Ctx = OS.getContext();
   MCSymbol *StringBegin = Ctx.createTempSymbol("strtab_begin", false),
            *StringEnd = Ctx.createTempSymbol("strtab_end", false);
 
-  OS.EmitIntValue(unsigned(ModuleSubstreamKind::StringTable), 4);
+  OS.EmitIntValue(unsigned(ModuleDebugFragmentKind::StringTable), 4);
   OS.emitAbsoluteSymbolDiff(StringEnd, StringBegin, 4);
   OS.EmitLabel(StringBegin);
 
   // Put the string table data fragment here, if we haven't already put it
   // somewhere else. If somebody wants two string tables in their .s file, one
   // will just be empty.
   if (!InsertedStrTabFragment) {
     OS.insert(getStringTableFragment());
void CodeViewContext::emitFileChecksums(MCObjectStreamer &OS) {
   // CodeView substreams.
   if (Filenames.empty())
     return;
 
   MCContext &Ctx = OS.getContext();
   MCSymbol *FileBegin = Ctx.createTempSymbol("filechecksums_begin", false),
            *FileEnd = Ctx.createTempSymbol("filechecksums_end", false);
 
-  OS.EmitIntValue(unsigned(ModuleSubstreamKind::FileChecksums), 4);
+  OS.EmitIntValue(unsigned(ModuleDebugFragmentKind::FileChecksums), 4);
   OS.emitAbsoluteSymbolDiff(FileEnd, FileBegin, 4);
   OS.EmitLabel(FileBegin);
 
   // Emit an array of FileChecksum entries. We index into this table using the
   // user-provided file number. Each entry is currently 8 bytes, as we don't
   // emit checksums.
   for (StringRef Filename : Filenames) {
     OS.EmitIntValue(getStringTableOffset(Filename), 4);
     // Zero the next two fields and align back to 4 bytes. This indicates that
     // no checksum is present.
     OS.EmitIntValue(0, 4);
   }
 
   OS.EmitLabel(FileEnd);
 }
 
 void CodeViewContext::emitLineTableForFunction(MCObjectStreamer &OS,
                                                unsigned FuncId,
                                                const MCSymbol *FuncBegin,
                                                const MCSymbol *FuncEnd) {
   MCContext &Ctx = OS.getContext();
   MCSymbol *LineBegin = Ctx.createTempSymbol("linetable_begin", false),
            *LineEnd = Ctx.createTempSymbol("linetable_end", false);
 
-  OS.EmitIntValue(unsigned(ModuleSubstreamKind::Lines), 4);
+  OS.EmitIntValue(unsigned(ModuleDebugFragmentKind::Lines), 4);
   OS.emitAbsoluteSymbolDiff(LineEnd, LineBegin, 4);
   OS.EmitLabel(LineBegin);
   OS.EmitCOFFSecRel32(FuncBegin, /*Offset=*/0);
   OS.EmitCOFFSectionIndex(FuncBegin);
 
   // Actual line info.
   std::vector<MCCVLineEntry> Locs = getFunctionLineEntries(FuncId);
   bool HaveColumns = any_of(Locs, [](const MCCVLineEntry &LineEntry) {

llvm/tools/llvm-pdbdump/LLVMOutputStyle.cpp

 
 #include "CompactTypeDumpVisitor.h"
 #include "StreamUtil.h"
 #include "llvm-pdbdump.h"
 
 #include "llvm/DebugInfo/CodeView/CVTypeDumper.h"
 #include "llvm/DebugInfo/CodeView/CVTypeVisitor.h"
 #include "llvm/DebugInfo/CodeView/EnumTables.h"
-#include "llvm/DebugInfo/CodeView/ModuleSubstreamVisitor.h"
+#include "llvm/DebugInfo/CodeView/ModuleDebugFragmentVisitor.h"
 #include "llvm/DebugInfo/CodeView/SymbolDumper.h"
 #include "llvm/DebugInfo/CodeView/TypeDatabaseVisitor.h"
 #include "llvm/DebugInfo/CodeView/TypeDeserializer.h"
 #include "llvm/DebugInfo/CodeView/TypeDumpVisitor.h"
 #include "llvm/DebugInfo/CodeView/TypeVisitorCallbackPipeline.h"
 #include "llvm/DebugInfo/MSF/MappedBlockStream.h"
+#include "llvm/DebugInfo/PDB/Native/DbiModuleDescriptor.h"
 #include "llvm/DebugInfo/PDB/Native/DbiStream.h"
 #include "llvm/DebugInfo/PDB/Native/EnumTables.h"
 #include "llvm/DebugInfo/PDB/Native/GlobalsStream.h"
 #include "llvm/DebugInfo/PDB/Native/ISectionContribVisitor.h"
 #include "llvm/DebugInfo/PDB/Native/InfoStream.h"
-#include "llvm/DebugInfo/PDB/Native/ModInfo.h"
-#include "llvm/DebugInfo/PDB/Native/ModStream.h"
+#include "llvm/DebugInfo/PDB/Native/ModuleDebugStream.h"
 #include "llvm/DebugInfo/PDB/Native/PDBFile.h"
 #include "llvm/DebugInfo/PDB/Native/PublicsStream.h"
 #include "llvm/DebugInfo/PDB/Native/RawError.h"
 #include "llvm/DebugInfo/PDB/Native/TpiStream.h"
 #include "llvm/DebugInfo/PDB/PDBExtras.h"
 #include "llvm/Object/COFF.h"
 #include "llvm/Support/BinaryStreamReader.h"
 #include "llvm/Support/FormatVariadic.h"
for (auto &Modi : DS->modules()) {
           (Modi.Info.getModuleStreamIndex() < File.getNumStreams());
       bool ShouldDumpSymbols =
           (opts::raw::DumpModuleSyms || opts::raw::DumpSymRecordBytes);
       if (HasModuleDI && (ShouldDumpSymbols || opts::raw::DumpLineInfo)) {
         auto ModStreamData = MappedBlockStream::createIndexedStream(
             File.getMsfLayout(), File.getMsfBuffer(),
             Modi.Info.getModuleStreamIndex());
 
-        ModStream ModS(Modi.Info, std::move(ModStreamData));
+        ModuleDebugStream ModS(Modi.Info, std::move(ModStreamData));
         if (auto EC = ModS.reload())
           return EC;
 
         if (ShouldDumpSymbols) {
           ListScope SS(P, "Symbols");
           codeview::CVSymbolDumper SD(P, TypeDB, nullptr, false);
           bool HadError = false;
           for (auto S : ModS.symbols(&HadError)) {
for (auto &Modi : DS->modules()) {
                 raw_error_code::corrupt_file,
                 "DBI stream contained corrupt symbol record");
         }
         if (opts::raw::DumpLineInfo) {
           ListScope SS(P, "LineInfo");
           bool HadError = false;
           // Define a locally scoped visitor to print the different
           // substream types types.
-          class RecordVisitor : public codeview::IModuleSubstreamVisitor {
+          class RecordVisitor : public codeview::ModuleDebugFragmentVisitor {
           public:
             RecordVisitor(ScopedPrinter &P, PDBFile &F) : P(P), F(F) {}
-            Error visitUnknown(ModuleSubstreamKind Kind,
+            Error visitUnknown(ModuleDebugFragmentKind Kind,
                                BinaryStreamRef Stream) override {
               DictScope DD(P, "Unknown");
               ArrayRef<uint8_t> Data;
               BinaryStreamReader R(Stream);
               if (auto EC = R.readBytes(Data, R.bytesRemaining())) {
                 return make_error<RawError>(
                     raw_error_code::corrupt_file,
                     "DBI stream contained corrupt line info record");
for (auto &Modi : DS->modules()) {
                 P.flush();
                 P.printEnum("Kind", uint8_t(C.Kind), getFileChecksumNames());
                 P.printBinaryBlock("Checksum", C.Checksum);
               }
               return Error::success();
             }
 
             Error visitLines(BinaryStreamRef Data,
-                             const LineSubstreamHeader *Header,
+                             const LineFragmentHeader *Header,
                              const LineInfoArray &Lines) override {
               DictScope DD(P, "Lines");
               for (const auto &L : Lines) {
                 if (auto Result = getFileNameForOffset2(L.NameIndex))
                   P.printString("FileName", Result.get());
                 else
                   return Result.takeError();
                 P.flush();
for (auto &Modi : DS->modules()) {
               return DS->getFileNameForIndex(Offset);
             }
             ScopedPrinter &P;
             PDBFile &F;
           };
 
           RecordVisitor V(P, File);
           for (const auto &L : ModS.lines(&HadError)) {
-            if (auto EC = codeview::visitModuleSubstream(L, V))
+            if (auto EC = codeview::visitModuleDebugFragment(L, V))
               return EC;
           }
         }
       }
     }
   }
   return Error::success();
 }

llvm/tools/llvm-pdbdump/StreamUtil.cpp

 //===- StreamUtil.cpp - PDB stream utilities --------------------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 
 #include "StreamUtil.h"
 
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/DenseMapInfo.h"
+#include "llvm/DebugInfo/PDB/Native/DbiModuleDescriptor.h"
 #include "llvm/DebugInfo/PDB/Native/DbiStream.h"
 #include "llvm/DebugInfo/PDB/Native/InfoStream.h"
-#include "llvm/DebugInfo/PDB/Native/ModInfo.h"
 #include "llvm/DebugInfo/PDB/Native/PDBFile.h"
 #include "llvm/DebugInfo/PDB/Native/TpiStream.h"
 
 namespace llvm {
 namespace pdb {
 void discoverStreamPurposes(PDBFile &File,
                             SmallVectorImpl<std::string> &Purposes) {
 

llvm/tools/llvm-pdbdump/YAMLOutputStyle.h

 #include "PdbYaml.h"
 
 #include "llvm/DebugInfo/CodeView/CVTypeDumper.h"
 #include "llvm/Support/ScopedPrinter.h"
 #include "llvm/Support/YAMLTraits.h"
 
 namespace llvm {
 namespace pdb {
-class ModStream;
+class ModuleDebugStream;
 
 class YAMLOutputStyle : public OutputStyle {
 public:
   YAMLOutputStyle(PDBFile &File);
 
   Error dump() override;
 
 private:
   Expected<Optional<llvm::pdb::yaml::PdbSourceFileInfo>>
-  getFileLineInfo(const pdb::ModStream &ModS);
+  getFileLineInfo(const pdb::ModuleDebugStream &ModS);
 
   Error dumpStringTable();
   Error dumpFileHeaders();
   Error dumpStreamMetadata();
   Error dumpStreamDirectory();
   Error dumpPDBStream();
   Error dumpDbiStream();
   Error dumpTpiStream();

llvm/tools/llvm-pdbdump/YAMLOutputStyle.cpp

 //===- YAMLOutputStyle.cpp ------------------------------------ *- C++ --*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 
 #include "YAMLOutputStyle.h"
 
 #include "PdbYaml.h"
 #include "llvm-pdbdump.h"
 
 #include "llvm/DebugInfo/CodeView/Line.h"
-#include "llvm/DebugInfo/CodeView/ModuleSubstream.h"
-#include "llvm/DebugInfo/CodeView/ModuleSubstreamVisitor.h"
+#include "llvm/DebugInfo/CodeView/ModuleDebugFragment.h"
+#include "llvm/DebugInfo/CodeView/ModuleDebugFragmentVisitor.h"
 #include "llvm/DebugInfo/MSF/MappedBlockStream.h"
 #include "llvm/DebugInfo/PDB/Native/DbiStream.h"
 #include "llvm/DebugInfo/PDB/Native/InfoStream.h"
-#include "llvm/DebugInfo/PDB/Native/ModStream.h"
+#include "llvm/DebugInfo/PDB/Native/ModuleDebugStream.h"
 #include "llvm/DebugInfo/PDB/Native/PDBFile.h"
 #include "llvm/DebugInfo/PDB/Native/RawConstants.h"
 #include "llvm/DebugInfo/PDB/Native/TpiStream.h"
 
 using namespace llvm;
 using namespace llvm::pdb;
 
 YAMLOutputStyle::YAMLOutputStyle(PDBFile &File)
Error YAMLOutputStyle::dump() {
   if (auto EC = dumpIpiStream())
     return EC;
 
   flush();
   return Error::success();
 }
 
 namespace {
-class C13SubstreamVisitor : public codeview::IModuleSubstreamVisitor {
+class C13SubstreamVisitor : public codeview::ModuleDebugFragmentVisitor {
 public:
   C13SubstreamVisitor(llvm::pdb::yaml::PdbSourceFileInfo &Info, PDBFile &F)
       : Info(Info), F(F) {}
 
-  Error visitUnknown(codeview::ModuleSubstreamKind Kind,
+  Error visitUnknown(codeview::ModuleDebugFragmentKind Kind,
                      BinaryStreamRef Stream) override {
     return Error::success();
   }
 
   Error
   visitFileChecksums(BinaryStreamRef Data,
                      const codeview::FileChecksumArray &Checksums) override {
     for (const auto &C : Checksums) {
       llvm::pdb::yaml::PdbSourceFileChecksumEntry Entry;
       if (auto Result = getGlobalString(C.FileNameOffset))
         Entry.FileName = *Result;
       else
         return Result.takeError();
 
       Entry.Kind = C.Kind;
       Entry.ChecksumBytes.Bytes = C.Checksum;
       Info.FileChecksums.push_back(Entry);
     }
     return Error::success();
   }
 
   Error visitLines(BinaryStreamRef Data,
-                   const codeview::LineSubstreamHeader *Header,
+                   const codeview::LineFragmentHeader *Header,
                    const codeview::LineInfoArray &Lines) override {
 
     Info.Lines.CodeSize = Header->CodeSize;
     Info.Lines.Flags =
         static_cast<codeview::LineFlags>(uint16_t(Header->Flags));
     Info.Lines.RelocOffset = Header->RelocOffset;
     Info.Lines.RelocSegment = Header->RelocSegment;
 
private:
   }
 
   llvm::pdb::yaml::PdbSourceFileInfo &Info;
   PDBFile &F;
 };
 }
 
 Expected<Optional<llvm::pdb::yaml::PdbSourceFileInfo>>
-YAMLOutputStyle::getFileLineInfo(const pdb::ModStream &ModS) {
+YAMLOutputStyle::getFileLineInfo(const pdb::ModuleDebugStream &ModS) {
   if (!ModS.hasLineInfo())
     return None;
 
   yaml::PdbSourceFileInfo Info;
   bool Error = false;
   C13SubstreamVisitor Visitor(Info, File);
-  for (auto &Substream : ModS.lines(&Error)) {
-    if (auto E = codeview::visitModuleSubstream(Substream, Visitor))
+  for (auto &Frag : ModS.lines(&Error)) {
+    if (auto E = codeview::visitModuleDebugFragment(Frag, Visitor))
       return std::move(E);
   }
 
   return Info;
 }
 
 Error YAMLOutputStyle::dumpFileHeaders() {
   if (opts::pdb2yaml::NoFileHeaders)
for (const auto &MI : DS.modules()) {
       DMI.Obj = MI.Info.getObjFileName();
       if (opts::pdb2yaml::DbiModuleSourceFileInfo)
         DMI.SourceFiles = MI.SourceFiles;
 
       auto ModStreamData = msf::MappedBlockStream::createIndexedStream(
           File.getMsfLayout(), File.getMsfBuffer(),
           MI.Info.getModuleStreamIndex());
 
-      pdb::ModStream ModS(MI.Info, std::move(ModStreamData));
+      pdb::ModuleDebugStream ModS(MI.Info, std::move(ModStreamData));
       if (auto EC = ModS.reload())
         return EC;
 
       if (opts::pdb2yaml::DbiModuleSourceLineInfo) {
         auto ExpectedInfo = getFileLineInfo(ModS);
         if (!ExpectedInfo)
           return ExpectedInfo.takeError();
         DMI.FileLineInfo = *ExpectedInfo;

llvm/tools/llvm-pdbdump/fuzzer/llvm-pdbdump-fuzzer.cpp

 //===----------------------------------------------------------------------===//
 #include "llvm/ADT/STLExtras.h"
 #include "llvm/DebugInfo/CodeView/BinaryByteStream.h"
 #include "llvm/DebugInfo/CodeView/SymbolDumper.h"
 #include "llvm/DebugInfo/CodeView/TypeDumper.h"
 #include "llvm/DebugInfo/PDB/Raw/DbiStream.h"
 #include "llvm/DebugInfo/PDB/Raw/IPDBStreamData.h"
 #include "llvm/DebugInfo/PDB/Raw/MappedBlockStream.h"
-#include "llvm/DebugInfo/PDB/Raw/ModStream.h"
+#include "llvm/DebugInfo/PDB/Raw/ModuleDebugStream.h"
 #include "llvm/DebugInfo/PDB/Raw/PDBFile.h"
 #include "llvm/DebugInfo/PDB/Raw/RawSession.h"
 #include "llvm/Support/MemoryBuffer.h"
 #include "llvm/Support/ScopedPrinter.h"
 
 using namespace llvm;
 
 namespace {
extern "C" int LLVMFuzzerTestOneInput(uint8_t *data, size_t size) {
 
   for (auto &Modi : DS.modules()) {
     auto ModStreamData = pdb::MappedBlockStream::createIndexedStream(
       Modi.Info.getModuleStreamIndex(), *File);
     if (!ModStreamData) {
       consumeError(ModStreamData.takeError());
       return 0;
     }
-    pdb::ModStream ModS(Modi.Info, std::move(*ModStreamData));
+    pdb::ModuleDebugStream ModS(Modi.Info, std::move(*ModStreamData));
     if (auto E = ModS.reload()) {
       consumeError(std::move(E));
       return 0;
     }
     codeview::CVSymbolDumper SD(P, TD, nullptr, false);
     bool HadError = false;
     for (auto &S : ModS.symbols(&HadError)) {
       SD.dump(S);
     }
   }
   return 0;
 }

llvm/tools/llvm-pdbdump/llvm-pdbdump.cpp

 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/StringExtras.h"
 #include "llvm/Config/config.h"
 #include "llvm/DebugInfo/MSF/MSFBuilder.h"
 #include "llvm/DebugInfo/PDB/GenericError.h"
 #include "llvm/DebugInfo/PDB/IPDBEnumChildren.h"
 #include "llvm/DebugInfo/PDB/IPDBRawSymbol.h"
 #include "llvm/DebugInfo/PDB/IPDBSession.h"
+#include "llvm/DebugInfo/PDB/Native/DbiModuleDescriptorBuilder.h"
 #include "llvm/DebugInfo/PDB/Native/DbiStream.h"
 #include "llvm/DebugInfo/PDB/Native/DbiStreamBuilder.h"
 #include "llvm/DebugInfo/PDB/Native/InfoStream.h"
 #include "llvm/DebugInfo/PDB/Native/InfoStreamBuilder.h"
-#include "llvm/DebugInfo/PDB/Native/ModInfoBuilder.h"
 #include "llvm/DebugInfo/PDB/Native/NativeSession.h"
 #include "llvm/DebugInfo/PDB/Native/PDBFile.h"
 #include "llvm/DebugInfo/PDB/Native/PDBFileBuilder.h"
 #include "llvm/DebugInfo/PDB/Native/RawConstants.h"
 #include "llvm/DebugInfo/PDB/Native/RawError.h"
 #include "llvm/DebugInfo/PDB/Native/StringTableBuilder.h"
 #include "llvm/DebugInfo/PDB/Native/TpiStream.h"
 #include "llvm/DebugInfo/PDB/Native/TpiStreamBuilder.h"

llvm/tools/llvm-readobj/COFFDumper.cpp

 static const EnumEntry<COFF::WeakExternalCharacteristics>
 WeakExternalCharacteristics[] = {
   { "NoLibrary", COFF::IMAGE_WEAK_EXTERN_SEARCH_NOLIBRARY },
   { "Library"  , COFF::IMAGE_WEAK_EXTERN_SEARCH_LIBRARY   },
   { "Alias"    , COFF::IMAGE_WEAK_EXTERN_SEARCH_ALIAS     }
 };
 
 static const EnumEntry<uint32_t> SubSectionTypes[] = {
-  LLVM_READOBJ_ENUM_CLASS_ENT(ModuleSubstreamKind, Symbols),
-  LLVM_READOBJ_ENUM_CLASS_ENT(ModuleSubstreamKind, Lines),
-  LLVM_READOBJ_ENUM_CLASS_ENT(ModuleSubstreamKind, StringTable),
-  LLVM_READOBJ_ENUM_CLASS_ENT(ModuleSubstreamKind, FileChecksums),
-  LLVM_READOBJ_ENUM_CLASS_ENT(ModuleSubstreamKind, FrameData),
-  LLVM_READOBJ_ENUM_CLASS_ENT(ModuleSubstreamKind, InlineeLines),
-  LLVM_READOBJ_ENUM_CLASS_ENT(ModuleSubstreamKind, CrossScopeImports),
-  LLVM_READOBJ_ENUM_CLASS_ENT(ModuleSubstreamKind, CrossScopeExports),
-  LLVM_READOBJ_ENUM_CLASS_ENT(ModuleSubstreamKind, ILLines),
-  LLVM_READOBJ_ENUM_CLASS_ENT(ModuleSubstreamKind, FuncMDTokenMap),
-  LLVM_READOBJ_ENUM_CLASS_ENT(ModuleSubstreamKind, TypeMDTokenMap),
-  LLVM_READOBJ_ENUM_CLASS_ENT(ModuleSubstreamKind, MergedAssemblyInput),
-  LLVM_READOBJ_ENUM_CLASS_ENT(ModuleSubstreamKind, CoffSymbolRVA),
+    LLVM_READOBJ_ENUM_CLASS_ENT(ModuleDebugFragmentKind, Symbols),
+    LLVM_READOBJ_ENUM_CLASS_ENT(ModuleDebugFragmentKind, Lines),
+    LLVM_READOBJ_ENUM_CLASS_ENT(ModuleDebugFragmentKind, StringTable),
+    LLVM_READOBJ_ENUM_CLASS_ENT(ModuleDebugFragmentKind, FileChecksums),
+    LLVM_READOBJ_ENUM_CLASS_ENT(ModuleDebugFragmentKind, FrameData),
+    LLVM_READOBJ_ENUM_CLASS_ENT(ModuleDebugFragmentKind, InlineeLines),
+    LLVM_READOBJ_ENUM_CLASS_ENT(ModuleDebugFragmentKind, CrossScopeImports),
+    LLVM_READOBJ_ENUM_CLASS_ENT(ModuleDebugFragmentKind, CrossScopeExports),
+    LLVM_READOBJ_ENUM_CLASS_ENT(ModuleDebugFragmentKind, ILLines),
+    LLVM_READOBJ_ENUM_CLASS_ENT(ModuleDebugFragmentKind, FuncMDTokenMap),
+    LLVM_READOBJ_ENUM_CLASS_ENT(ModuleDebugFragmentKind, TypeMDTokenMap),
+    LLVM_READOBJ_ENUM_CLASS_ENT(ModuleDebugFragmentKind, MergedAssemblyInput),
+    LLVM_READOBJ_ENUM_CLASS_ENT(ModuleDebugFragmentKind, CoffSymbolRVA),
 };
 
 static const EnumEntry<uint32_t> FrameDataFlags[] = {
     LLVM_READOBJ_ENUM_ENT(FrameData, HasSEH),
     LLVM_READOBJ_ENUM_ENT(FrameData, HasEH),
     LLVM_READOBJ_ENUM_ENT(FrameData, IsFunctionStart),
 };
 
while (!Data.empty() && (CVFileChecksumTable.data() == nullptr ||
                            CVStringTable.data() == nullptr)) {
     // The section consists of a number of subsection in the following format:
     // |SubSectionType|SubSectionSize|Contents...|
     uint32_t SubType, SubSectionSize;
     error(consume(Data, SubType));
     error(consume(Data, SubSectionSize));
     if (SubSectionSize > Data.size())
       return error(object_error::parse_failed);
-    switch (ModuleSubstreamKind(SubType)) {
-    case ModuleSubstreamKind::FileChecksums:
+    switch (ModuleDebugFragmentKind(SubType)) {
+    case ModuleDebugFragmentKind::FileChecksums:
       CVFileChecksumTable = Data.substr(0, SubSectionSize);
       break;
-    case ModuleSubstreamKind::StringTable:
+    case ModuleDebugFragmentKind::StringTable:
       CVStringTable = Data.substr(0, SubSectionSize);
       break;
     default:
       break;
     }
     uint32_t PaddedSize = alignTo(SubSectionSize, 4);
     if (PaddedSize > Data.size())
       error(object_error::parse_failed);
while (!Data.empty()) {
     Data = SectionContents.drop_front(NextOffset);
 
     // Optionally print the subsection bytes in case our parsing gets confused
     // later.
     if (opts::CodeViewSubsectionBytes)
       printBinaryBlockWithRelocs("SubSectionContents", Section, SectionContents,
                                  Contents);
 
-    switch (ModuleSubstreamKind(SubType)) {
-    case ModuleSubstreamKind::Symbols:
+    switch (ModuleDebugFragmentKind(SubType)) {
+    case ModuleDebugFragmentKind::Symbols:
       printCodeViewSymbolsSubsection(Contents, Section, SectionContents);
       break;
 
-    case ModuleSubstreamKind::InlineeLines:
+    case ModuleDebugFragmentKind::InlineeLines:
       printCodeViewInlineeLines(Contents);
       break;
 
-    case ModuleSubstreamKind::FileChecksums:
+    case ModuleDebugFragmentKind::FileChecksums:
       printCodeViewFileChecksums(Contents);
       break;
 
-    case ModuleSubstreamKind::Lines: {
+    case ModuleDebugFragmentKind::Lines: {
       // Holds a PC to file:line table.  Some data to parse this subsection is
       // stored in the other subsections, so just check sanity and store the
       // pointers for deferred processing.
 
       if (SubSectionSize < 12) {
         // There should be at least three words to store two function
         // relocations and size of the code.
         error(object_error::parse_failed);
case ModuleDebugFragmentKind::Lines: {
         error(object_error::parse_failed);
         return;
       }
 
       FunctionLineTables[LinkageName] = Contents;
       FunctionNames.push_back(LinkageName);
       break;
     }
-    case ModuleSubstreamKind::FrameData: {
+    case ModuleDebugFragmentKind::FrameData: {
       // First four bytes is a relocation against the function.
       BinaryByteStream S(Contents, llvm::support::little);
       BinaryStreamReader SR(S);
       const uint32_t *CodePtr;
       error(SR.readObject(CodePtr));
       StringRef LinkageName;
       error(resolveSymbolName(Obj->getCOFFSection(Section), SectionContents,
                               CodePtr, LinkageName));