[llvm] r343951 - [PDB] Add the ability to lookup global symbols by name.

Mikael Holmén via llvm-commits llvm-commits at lists.llvm.org
Sun Oct 7 23:24:03 PDT 2018


Hi Zachary,

I get the following with clang 3.6:

../lib/DebugInfo/PDB/Native/GlobalsStream.cpp:61:33: error: comparison 
of integers of different signs: 'int' and 'uint32_t' (aka 'unsigned 
int') [-Werror,-Wsign-compare]
   if (CompressedBucketIndex + 1 < GlobalsTable.HashBuckets.size())
       ~~~~~~~~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 error generated.

I saw that you fixed something in r343952 and r343953 but now I get this 
warnign.

Regards,
Mikael

On 10/08/2018 06:19 AM, Zachary Turner via llvm-commits wrote:
> Author: zturner
> Date: Sun Oct  7 21:19:16 2018
> New Revision: 343951
> 
> URL: http://llvm.org/viewvc/llvm-project?rev=343951&view=rev
> Log:
> [PDB] Add the ability to lookup global symbols by name.
> 
> The Globals table is a hash table keyed on symbol name, so
> it's possible to lookup symbols by name in O(1) time.  Add
> a function to the globals stream to do this, and add an option
> to llvm-pdbutil to exercise this, then use it to write some
> tests to verify correctness.
> 
> Added:
>      llvm/trunk/test/DebugInfo/PDB/pdbdump-global-lookup.test
> Modified:
>      llvm/trunk/include/llvm/DebugInfo/CodeView/SymbolRecord.h
>      llvm/trunk/include/llvm/DebugInfo/PDB/Native/DbiStream.h
>      llvm/trunk/include/llvm/DebugInfo/PDB/Native/GlobalsStream.h
>      llvm/trunk/include/llvm/DebugInfo/PDB/Native/ModuleDebugStream.h
>      llvm/trunk/lib/DebugInfo/CodeView/SymbolDumper.cpp
>      llvm/trunk/lib/DebugInfo/PDB/Native/DbiStream.cpp
>      llvm/trunk/lib/DebugInfo/PDB/Native/GlobalsStream.cpp
>      llvm/trunk/lib/DebugInfo/PDB/Native/ModuleDebugStream.cpp
>      llvm/trunk/tools/llvm-pdbutil/DumpOutputStyle.cpp
>      llvm/trunk/tools/llvm-pdbutil/llvm-pdbutil.cpp
>      llvm/trunk/tools/llvm-pdbutil/llvm-pdbutil.h
> 
> Modified: llvm/trunk/include/llvm/DebugInfo/CodeView/SymbolRecord.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/DebugInfo/CodeView/SymbolRecord.h?rev=343951&r1=343950&r2=343951&view=diff
> ==============================================================================
> --- llvm/trunk/include/llvm/DebugInfo/CodeView/SymbolRecord.h (original)
> +++ llvm/trunk/include/llvm/DebugInfo/CodeView/SymbolRecord.h Sun Oct  7 21:19:16 2018
> @@ -358,6 +358,7 @@ public:
>   // S_PUB32
>   class PublicSym32 : public SymbolRecord {
>   public:
> +  PublicSym32() : SymbolRecord(SymbolRecordKind::PublicSym32) {}
>     explicit PublicSym32(SymbolRecordKind Kind) : SymbolRecord(Kind) {}
>     explicit PublicSym32(uint32_t RecordOffset)
>         : SymbolRecord(SymbolRecordKind::PublicSym32),
> @@ -636,6 +637,7 @@ public:
>   // S_OBJNAME
>   class ObjNameSym : public SymbolRecord {
>   public:
> +  explicit ObjNameSym() : SymbolRecord(SymbolRecordKind::ObjNameSym) {}
>     explicit ObjNameSym(SymbolRecordKind Kind) : SymbolRecord(Kind) {}
>     ObjNameSym(uint32_t RecordOffset)
>         : SymbolRecord(SymbolRecordKind::ObjNameSym), RecordOffset(RecordOffset) {
> @@ -718,6 +720,7 @@ public:
>   // S_COMPILE3
>   class Compile3Sym : public SymbolRecord {
>   public:
> +  Compile3Sym() : SymbolRecord(SymbolRecordKind::Compile3Sym) {}
>     explicit Compile3Sym(SymbolRecordKind Kind) : SymbolRecord(Kind) {}
>     Compile3Sym(uint32_t RecordOffset)
>         : SymbolRecord(SymbolRecordKind::Compile3Sym),
> @@ -739,8 +742,17 @@ public:
>       Flags = CompileSym3Flags((uint32_t(Flags) & 0xFFFFFF00) | uint32_t(Lang));
>     }
>   
> -  uint8_t getLanguage() const { return static_cast<uint32_t>(Flags) & 0xFF; }
> -  uint32_t getFlags() const { return static_cast<uint32_t>(Flags) & ~0xFF; }
> +  SourceLanguage getLanguage() const {
> +    return static_cast<SourceLanguage>(static_cast<uint32_t>(Flags) & 0xFF);
> +  }
> +  CompileSym3Flags getFlags() const {
> +    return static_cast<CompileSym3Flags>(static_cast<uint32_t>(Flags) & ~0xFF);
> +  }
> +
> +  bool hasOptimizations() const {
> +    return CompileSym3Flags::None !=
> +           (getFlags() & (CompileSym3Flags::PGO | CompileSym3Flags::LTCG));
> +  }
>   
>     uint32_t RecordOffset;
>   };
> 
> Modified: llvm/trunk/include/llvm/DebugInfo/PDB/Native/DbiStream.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/DebugInfo/PDB/Native/DbiStream.h?rev=343951&r1=343950&r2=343951&view=diff
> ==============================================================================
> --- llvm/trunk/include/llvm/DebugInfo/PDB/Native/DbiStream.h (original)
> +++ llvm/trunk/include/llvm/DebugInfo/PDB/Native/DbiStream.h Sun Oct  7 21:19:16 2018
> @@ -78,7 +78,7 @@ public:
>   
>     const DbiModuleList &modules() const;
>   
> -  FixedStreamArray<object::coff_section> getSectionHeaders();
> +  FixedStreamArray<object::coff_section> getSectionHeaders() const;
>   
>     FixedStreamArray<object::FpoData> getFpoRecords();
>   
> 
> Modified: llvm/trunk/include/llvm/DebugInfo/PDB/Native/GlobalsStream.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/DebugInfo/PDB/Native/GlobalsStream.h?rev=343951&r1=343950&r2=343951&view=diff
> ==============================================================================
> --- llvm/trunk/include/llvm/DebugInfo/PDB/Native/GlobalsStream.h (original)
> +++ llvm/trunk/include/llvm/DebugInfo/PDB/Native/GlobalsStream.h Sun Oct  7 21:19:16 2018
> @@ -10,18 +10,20 @@
>   #ifndef LLVM_DEBUGINFO_PDB_RAW_GLOBALS_STREAM_H
>   #define LLVM_DEBUGINFO_PDB_RAW_GLOBALS_STREAM_H
>   
> +#include "llvm/ADT/iterator.h"
> +#include "llvm/DebugInfo/CodeView/SymbolRecord.h"
>   #include "llvm/DebugInfo/MSF/MappedBlockStream.h"
>   #include "llvm/DebugInfo/PDB/Native/RawConstants.h"
>   #include "llvm/DebugInfo/PDB/Native/RawTypes.h"
>   #include "llvm/DebugInfo/PDB/PDBTypes.h"
>   #include "llvm/Support/BinaryStreamArray.h"
>   #include "llvm/Support/Error.h"
> -#include "llvm/ADT/iterator.h"
>   
>   namespace llvm {
>   namespace pdb {
>   class DbiStream;
>   class PDBFile;
> +class SymbolStream;
>   
>   /// Iterator over hash records producing symbol record offsets. Abstracts away
>   /// the fact that symbol record offsets on disk are off-by-one.
> @@ -50,8 +52,9 @@ class GSIHashTable {
>   public:
>     const GSIHashHeader *HashHdr;
>     FixedStreamArray<PSHashRecord> HashRecords;
> -  ArrayRef<uint8_t> HashBitmap;
> +  ArrayRef<uint32_t> HashBitmap;
>     FixedStreamArray<support::ulittle32_t> HashBuckets;
> +  std::array<int32_t, IPHR_HASH + 1> BucketMap;
>   
>     Error read(BinaryStreamReader &Reader);
>   
> @@ -72,6 +75,9 @@ public:
>     const GSIHashTable &getGlobalsTable() const { return GlobalsTable; }
>     Error reload();
>   
> +  std::vector<std::pair<uint32_t, codeview::CVSymbol>>
> +  findRecordsByName(StringRef Name, const SymbolStream &Symbols) const;
> +
>   private:
>     GSIHashTable GlobalsTable;
>     std::unique_ptr<msf::MappedBlockStream> Stream;
> 
> Modified: llvm/trunk/include/llvm/DebugInfo/PDB/Native/ModuleDebugStream.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/DebugInfo/PDB/Native/ModuleDebugStream.h?rev=343951&r1=343950&r2=343951&view=diff
> ==============================================================================
> --- llvm/trunk/include/llvm/DebugInfo/PDB/Native/ModuleDebugStream.h (original)
> +++ llvm/trunk/include/llvm/DebugInfo/PDB/Native/ModuleDebugStream.h Sun Oct  7 21:19:16 2018
> @@ -15,6 +15,7 @@
>   #include "llvm/DebugInfo/CodeView/DebugSubsectionRecord.h"
>   #include "llvm/DebugInfo/CodeView/SymbolRecord.h"
>   #include "llvm/DebugInfo/MSF/MappedBlockStream.h"
> +#include "llvm/DebugInfo/PDB/Native/DbiModuleDescriptor.h"
>   #include "llvm/Support/BinaryStreamRef.h"
>   #include "llvm/Support/Error.h"
>   #include <cstdint>
> @@ -51,6 +52,8 @@ public:
>   
>     ModuleDebugStreamRef &operator=(ModuleDebugStreamRef &&Other) = delete;
>   
> +  codeview::CVSymbol readSymbolAtOffset(uint32_t Offset) const;
> +
>     iterator_range<DebugSubsectionIterator> subsections() const;
>     codeview::DebugSubsectionArray getSubsectionsArray() const {
>       return Subsections;
> @@ -64,7 +67,7 @@ public:
>     findChecksumsSubsection() const;
>   
>   private:
> -  const DbiModuleDescriptor &Mod;
> +  DbiModuleDescriptor Mod;
>   
>     uint32_t Signature;
>   
> 
> Modified: llvm/trunk/lib/DebugInfo/CodeView/SymbolDumper.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/DebugInfo/CodeView/SymbolDumper.cpp?rev=343951&r1=343950&r2=343951&view=diff
> ==============================================================================
> --- llvm/trunk/lib/DebugInfo/CodeView/SymbolDumper.cpp (original)
> +++ llvm/trunk/lib/DebugInfo/CodeView/SymbolDumper.cpp Sun Oct  7 21:19:16 2018
> @@ -262,7 +262,8 @@ Error CVSymbolDumperImpl::visitKnownReco
>   Error CVSymbolDumperImpl::visitKnownRecord(CVSymbol &CVR,
>                                              Compile3Sym &Compile3) {
>     W.printEnum("Language", Compile3.getLanguage(), getSourceLanguageNames());
> -  W.printFlags("Flags", Compile3.getFlags(), getCompileSym3FlagNames());
> +  W.printFlags("Flags", uint32_t(Compile3.getFlags()),
> +               getCompileSym3FlagNames());
>     W.printEnum("Machine", unsigned(Compile3.Machine), getCPUTypeNames());
>     CompilationCPUType = Compile3.Machine;
>     std::string FrontendVersion;
> 
> Modified: llvm/trunk/lib/DebugInfo/PDB/Native/DbiStream.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/DebugInfo/PDB/Native/DbiStream.cpp?rev=343951&r1=343950&r2=343951&view=diff
> ==============================================================================
> --- llvm/trunk/lib/DebugInfo/PDB/Native/DbiStream.cpp (original)
> +++ llvm/trunk/lib/DebugInfo/PDB/Native/DbiStream.cpp Sun Oct  7 21:19:16 2018
> @@ -197,7 +197,7 @@ PDB_Machine DbiStream::getMachineType()
>     return static_cast<PDB_Machine>(Machine);
>   }
>   
> -FixedStreamArray<object::coff_section> DbiStream::getSectionHeaders() {
> +FixedStreamArray<object::coff_section> DbiStream::getSectionHeaders() const {
>     return SectionHeaders;
>   }
>   
> 
> Modified: llvm/trunk/lib/DebugInfo/PDB/Native/GlobalsStream.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/DebugInfo/PDB/Native/GlobalsStream.cpp?rev=343951&r1=343950&r2=343951&view=diff
> ==============================================================================
> --- llvm/trunk/lib/DebugInfo/PDB/Native/GlobalsStream.cpp (original)
> +++ llvm/trunk/lib/DebugInfo/PDB/Native/GlobalsStream.cpp Sun Oct  7 21:19:16 2018
> @@ -20,7 +20,11 @@
>   //===----------------------------------------------------------------------===//
>   
>   #include "llvm/DebugInfo/PDB/Native/GlobalsStream.h"
> +
> +#include "llvm/DebugInfo/CodeView/RecordName.h"
> +#include "llvm/DebugInfo/PDB/Native/Hash.h"
>   #include "llvm/DebugInfo/PDB/Native/RawError.h"
> +#include "llvm/DebugInfo/PDB/Native/SymbolStream.h"
>   #include "llvm/Support/BinaryStreamReader.h"
>   #include "llvm/Support/Error.h"
>   #include <algorithm>
> @@ -41,6 +45,35 @@ Error GlobalsStream::reload() {
>     return Error::success();
>   }
>   
> +std::vector<std::pair<uint32_t, codeview::CVSymbol>>
> +GlobalsStream::findRecordsByName(StringRef Name,
> +                                 const SymbolStream &Symbols) const {
> +  std::vector<std::pair<uint32_t, codeview::CVSymbol>> Result;
> +
> +  // Hash the name to figure out which bucket this goes into.
> +  size_t ExpandedBucketIndex = hashStringV1(Name) % IPHR_HASH;
> +  uint32_t CompressedBucketIndex = GlobalsTable.BucketMap[ExpandedBucketIndex];
> +  if (CompressedBucketIndex == -1)
> +    return Result;
> +
> +  uint32_t ChainStartOffset = GlobalsTable.HashBuckets[CompressedBucketIndex];
> +  uint32_t NextChainStart = GlobalsTable.HashBuckets.size();
> +  if (CompressedBucketIndex + 1 < GlobalsTable.HashBuckets.size())
> +    NextChainStart = GlobalsTable.HashBuckets[CompressedBucketIndex + 1];
> +  ChainStartOffset /= 12;
> +  NextChainStart /= 12;
> +
> +  while (ChainStartOffset < NextChainStart) {
> +    PSHashRecord PSH = GlobalsTable.HashRecords[ChainStartOffset];
> +    uint32_t Off = PSH.Off - 1;
> +    codeview::CVSymbol Record = Symbols.readRecord(Off);
> +    if (codeview::getSymbolName(Record) == Name)
> +      Result.push_back(std::make_pair(Off, std::move(Record)));
> +    ++ChainStartOffset;
> +  }
> +  return Result;
> +}
> +
>   static Error checkHashHdrVersion(const GSIHashHeader *HashHdr) {
>     if (HashHdr->VerHdr != GSIHashHeader::HdrVersion)
>       return make_error<RawError>(
> @@ -86,7 +119,8 @@ static Error readGSIHashRecords(FixedStr
>   
>   static Error
>   readGSIHashBuckets(FixedStreamArray<support::ulittle32_t> &HashBuckets,
> -                   ArrayRef<uint8_t> &HashBitmap, const GSIHashHeader *HashHdr,
> +                   ArrayRef<uint32_t> &HashBitmap, const GSIHashHeader *HashHdr,
> +                   MutableArrayRef<int32_t> BucketMap,
>                      BinaryStreamReader &Reader) {
>     if (auto EC = checkHashHdrVersion(HashHdr))
>       return EC;
> @@ -94,13 +128,27 @@ readGSIHashBuckets(FixedStreamArray<supp
>     // Before the actual hash buckets, there is a bitmap of length determined by
>     // IPHR_HASH.
>     size_t BitmapSizeInBits = alignTo(IPHR_HASH + 1, 32);
> -  uint32_t NumBitmapEntries = BitmapSizeInBits / 8;
> -  if (auto EC = Reader.readBytes(HashBitmap, NumBitmapEntries))
> +  uint32_t NumBitmapEntries = BitmapSizeInBits / 32;
> +  if (auto EC = Reader.readArray(HashBitmap, NumBitmapEntries))
>       return joinErrors(std::move(EC),
>                         make_error<RawError>(raw_error_code::corrupt_file,
>                                              "Could not read a bitmap."));
> +  uint32_t NumBuckets1 = 0;
> +  uint32_t CompressedBucketIdx = 0;
> +  for (uint32_t I = 0; I <= IPHR_HASH; ++I) {
> +    uint8_t WordIdx = I / 32;
> +    uint8_t BitIdx = I % 32;
> +    bool IsSet = HashBitmap[WordIdx] & (1U << BitIdx);
> +    if (IsSet) {
> +      ++NumBuckets1;
> +      BucketMap[I] = CompressedBucketIdx++;
> +    } else {
> +      BucketMap[I] = -1;
> +    }
> +  }
> +
>     uint32_t NumBuckets = 0;
> -  for (uint8_t B : HashBitmap)
> +  for (uint32_t B : HashBitmap)
>       NumBuckets += countPopulation(B);
>   
>     // Hash buckets follow.
> @@ -118,7 +166,8 @@ Error GSIHashTable::read(BinaryStreamRea
>     if (auto EC = readGSIHashRecords(HashRecords, HashHdr, Reader))
>       return EC;
>     if (HashHdr->HrSize > 0)
> -    if (auto EC = readGSIHashBuckets(HashBuckets, HashBitmap, HashHdr, Reader))
> +    if (auto EC = readGSIHashBuckets(HashBuckets, HashBitmap, HashHdr,
> +                                     BucketMap, Reader))
>         return EC;
>     return Error::success();
>   }
> 
> Modified: llvm/trunk/lib/DebugInfo/PDB/Native/ModuleDebugStream.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/DebugInfo/PDB/Native/ModuleDebugStream.cpp?rev=343951&r1=343950&r2=343951&view=diff
> ==============================================================================
> --- llvm/trunk/lib/DebugInfo/PDB/Native/ModuleDebugStream.cpp (original)
> +++ llvm/trunk/lib/DebugInfo/PDB/Native/ModuleDebugStream.cpp Sun Oct  7 21:19:16 2018
> @@ -97,6 +97,14 @@ ModuleDebugStreamRef::symbols(bool *HadE
>     return make_range(SymbolArray.begin(HadError), SymbolArray.end());
>   }
>   
> +CVSymbol ModuleDebugStreamRef::readSymbolAtOffset(uint32_t Offset) const {
> +  // Offsets include the size of the 4-byte magic at the beginning, but lookup
> +  // doesn't take that into account, so subtract it here.
> +  auto Iter = SymbolArray.at(Offset - 4);
> +  assert(Iter != SymbolArray.end());
> +  return *Iter;
> +}
> +
>   iterator_range<ModuleDebugStreamRef::DebugSubsectionIterator>
>   ModuleDebugStreamRef::subsections() const {
>     return make_range(Subsections.begin(), Subsections.end());
> 
> Added: llvm/trunk/test/DebugInfo/PDB/pdbdump-global-lookup.test
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/DebugInfo/PDB/pdbdump-global-lookup.test?rev=343951&view=auto
> ==============================================================================
> --- llvm/trunk/test/DebugInfo/PDB/pdbdump-global-lookup.test (added)
> +++ llvm/trunk/test/DebugInfo/PDB/pdbdump-global-lookup.test Sun Oct  7 21:19:16 2018
> @@ -0,0 +1,22 @@
> +; RUN: llvm-pdbutil dump -globals \
> +; RUN:    -global-name="operator delete" \
> +; RUN:    -global-name=main \
> +; RUN:    -global-name=abcdefg \
> +; RUN:    -global-name="Base2::`vbase destructor'" \
> +; RUN:    %p/Inputs/every-function.pdb | FileCheck %s
> +
> +CHECK:                        Global Symbols
> +CHECK-NEXT: ============================================================
> +CHECK-NEXT:     Global Name `operator delete`
> +CHECK-NEXT:       1516 | S_PROCREF [size = 32] `operator delete`
> +CHECK-NEXT:              module = 1, sum name = 0, offset = 324
> +CHECK-NEXT:       1484 | S_PROCREF [size = 32] `operator delete`
> +CHECK-NEXT:              module = 1, sum name = 0, offset = 184
> +CHECK-NEXT:     Global Name `main`
> +CHECK-NEXT:       2016 | S_PROCREF [size = 20] `main`
> +CHECK-NEXT:              module = 1, sum name = 0, offset = 1952
> +CHECK-NEXT:     Global Name `abcdefg`
> +CHECK-NEXT:       (no matching records found)
> +CHECK-NEXT:     Global Name `Base2::`vbase destructor'`
> +CHECK-NEXT:       2288 | S_PROCREF [size = 40] `Base2::`vbase destructor'`
> +CHECK-NEXT:              module = 1, sum name = 0, offset = 2852
> 
> Modified: llvm/trunk/tools/llvm-pdbutil/DumpOutputStyle.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-pdbutil/DumpOutputStyle.cpp?rev=343951&r1=343950&r2=343951&view=diff
> ==============================================================================
> --- llvm/trunk/tools/llvm-pdbutil/DumpOutputStyle.cpp (original)
> +++ llvm/trunk/tools/llvm-pdbutil/DumpOutputStyle.cpp Sun Oct  7 21:19:16 2018
> @@ -1572,8 +1572,40 @@ Error DumpOutputStyle::dumpGlobals() {
>     ExitOnError Err("Error dumping globals stream: ");
>     auto &Globals = Err(getPdb().getPDBGlobalsStream());
>   
> -  const GSIHashTable &Table = Globals.getGlobalsTable();
> -  Err(dumpSymbolsFromGSI(Table, opts::dump::DumpGlobalExtras));
> +  if (opts::dump::DumpGlobalNames.empty()) {
> +    const GSIHashTable &Table = Globals.getGlobalsTable();
> +    Err(dumpSymbolsFromGSI(Table, opts::dump::DumpGlobalExtras));
> +  } else {
> +    SymbolStream &SymRecords = cantFail(getPdb().getPDBSymbolStream());
> +    auto &Types = File.types();
> +    auto &Ids = File.ids();
> +
> +    SymbolVisitorCallbackPipeline Pipeline;
> +    SymbolDeserializer Deserializer(nullptr, CodeViewContainer::Pdb);
> +    MinimalSymbolDumper Dumper(P, opts::dump::DumpSymRecordBytes, Ids, Types);
> +
> +    Pipeline.addCallbackToPipeline(Deserializer);
> +    Pipeline.addCallbackToPipeline(Dumper);
> +    CVSymbolVisitor Visitor(Pipeline);
> +
> +    using ResultEntryType = std::pair<uint32_t, CVSymbol>;
> +    for (StringRef Name : opts::dump::DumpGlobalNames) {
> +      AutoIndent Indent(P);
> +      P.formatLine("Global Name `{0}`", Name);
> +      std::vector<ResultEntryType> Results =
> +          Globals.findRecordsByName(Name, SymRecords);
> +      if (Results.empty()) {
> +        AutoIndent Indent(P);
> +        P.printLine("(no matching records found)");
> +        continue;
> +      }
> +
> +      for (ResultEntryType Result : Results) {
> +        if (auto E = Visitor.visitSymbolRecord(Result.second, Result.first))
> +          return E;
> +      }
> +    }
> +  }
>     return Error::success();
>   }
>   
> @@ -1676,7 +1708,10 @@ Error DumpOutputStyle::dumpSymbolsFromGS
>   
>     // Return early if we aren't dumping public hash table and address map info.
>     if (HashExtras) {
> -    P.formatBinary("Hash Bitmap", Table.HashBitmap, 0);
> +    ArrayRef<uint8_t> BitmapBytes(
> +        reinterpret_cast<const uint8_t *>(Table.HashBitmap.data()),
> +        Table.HashBitmap.size() * sizeof(uint32_t));
> +    P.formatBinary("Hash Bitmap", BitmapBytes, 0);
>   
>       P.formatLine("Hash Entries");
>       {
> 
> Modified: llvm/trunk/tools/llvm-pdbutil/llvm-pdbutil.cpp
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-pdbutil/llvm-pdbutil.cpp?rev=343951&r1=343950&r2=343951&view=diff
> ==============================================================================
> --- llvm/trunk/tools/llvm-pdbutil/llvm-pdbutil.cpp (original)
> +++ llvm/trunk/tools/llvm-pdbutil/llvm-pdbutil.cpp Sun Oct  7 21:19:16 2018
> @@ -526,6 +526,11 @@ cl::opt<bool> DumpGlobals("globals", cl:
>                             cl::cat(SymbolOptions), cl::sub(DumpSubcommand));
>   cl::opt<bool> DumpGlobalExtras("global-extras", cl::desc("dump Globals hashes"),
>                                  cl::cat(SymbolOptions), cl::sub(DumpSubcommand));
> +cl::list<std::string> DumpGlobalNames(
> +    "global-name",
> +    cl::desc(
> +        "With -globals, only dump globals whose name matches the given value"),
> +    cl::cat(SymbolOptions), cl::sub(DumpSubcommand), cl::ZeroOrMore);
>   cl::opt<bool> DumpPublics("publics", cl::desc("dump Publics stream data"),
>                             cl::cat(SymbolOptions), cl::sub(DumpSubcommand));
>   cl::opt<bool> DumpPublicExtras("public-extras",
> 
> Modified: llvm/trunk/tools/llvm-pdbutil/llvm-pdbutil.h
> URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/tools/llvm-pdbutil/llvm-pdbutil.h?rev=343951&r1=343950&r2=343951&view=diff
> ==============================================================================
> --- llvm/trunk/tools/llvm-pdbutil/llvm-pdbutil.h (original)
> +++ llvm/trunk/tools/llvm-pdbutil/llvm-pdbutil.h Sun Oct  7 21:19:16 2018
> @@ -169,6 +169,7 @@ extern llvm::cl::opt<bool> DumpSymbols;
>   extern llvm::cl::opt<bool> DumpSymRecordBytes;
>   extern llvm::cl::opt<bool> DumpGSIRecords;
>   extern llvm::cl::opt<bool> DumpGlobals;
> +extern llvm::cl::list<std::string> DumpGlobalNames;
>   extern llvm::cl::opt<bool> DumpGlobalExtras;
>   extern llvm::cl::opt<bool> DumpPublics;
>   extern llvm::cl::opt<bool> DumpPublicExtras;
> 
> 
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