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llvm-mirror/tools/llvm-pdbutil/DumpOutputStyle.h
Reid Kleckner 1eb494baab [pdb] Add -type-stats and sort stats by descending size
Summary:
It prints this on chromium browser_tests.exe.pdb:

  Types
           Total: 5647475 entries ( 371,897,512 bytes,   65.85 avg)
  --------------------------------------------------------------------------
        LF_CLASS:  397894 entries ( 119,537,780 bytes,  300.43 avg)
    LF_STRUCTURE:  236351 entries (  83,208,084 bytes,  352.05 avg)
    LF_FIELDLIST:  291003 entries (  66,087,920 bytes,  227.10 avg)
    LF_MFUNCTION: 1884176 entries (  52,756,928 bytes,   28.00 avg)
      LF_POINTER: 1149030 entries (  13,877,344 bytes,   12.08 avg)
      LF_ARGLIST:  789980 entries (  12,436,752 bytes,   15.74 avg)
   LF_METHODLIST:  361498 entries (   8,351,008 bytes,   23.10 avg)
         LF_ENUM:   16069 entries (   6,108,340 bytes,  380.13 avg)
    LF_PROCEDURE:  269374 entries (   4,309,984 bytes,   16.00 avg)
     LF_MODIFIER:  235602 entries (   2,827,224 bytes,   12.00 avg)
        LF_UNION:    9131 entries (   2,072,168 bytes,  226.94 avg)
      LF_VFTABLE:     323 entries (     207,784 bytes,  643.29 avg)
        LF_ARRAY:    6639 entries (     106,380 bytes,   16.02 avg)
      LF_VTSHAPE:     126 entries (       6,472 bytes,   51.37 avg)
     LF_BITFIELD:     278 entries (       3,336 bytes,   12.00 avg)
        LF_LABEL:       1 entries (           8 bytes,    8.00 avg)

The PDB is overall 1.9GB, so the LF_CLASS and LF_STRUCTURE declarations
account for about 10% of the overall file size. I was surprised to find
that on average LF_FIELDLIST records are short. Maybe this is because
there are many more types with short member lists than there are
instantiations with lots of members, like std::vector.

Reviewers: aganea, zturner

Subscribers: llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D59672

llvm-svn: 356813
2019-03-22 21:22:13 +00:00

123 lines
2.9 KiB
C++

//===- DumpOutputStyle.h -------------------------------------- *- C++ --*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TOOLS_LLVMPDBDUMP_DUMPOUTPUTSTYLE_H
#define LLVM_TOOLS_LLVMPDBDUMP_DUMPOUTPUTSTYLE_H
#include "LinePrinter.h"
#include "OutputStyle.h"
#include "StreamUtil.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/Optional.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/DebugInfo/PDB/Native/RawConstants.h"
#include <string>
namespace llvm {
class BitVector;
namespace codeview {
class LazyRandomTypeCollection;
}
namespace object {
class COFFObjectFile;
}
namespace pdb {
class GSIHashTable;
class InputFile;
class TypeReferenceTracker;
struct StatCollection {
struct Stat {
Stat() {}
Stat(uint32_t Count, uint32_t Size) : Count(Count), Size(Size) {}
uint32_t Count = 0;
uint32_t Size = 0;
void update(uint32_t RecordSize) {
++Count;
Size += RecordSize;
}
};
using KindAndStat = std::pair<uint32_t, Stat>;
void update(uint32_t Kind, uint32_t RecordSize) {
Totals.update(RecordSize);
auto Iter = Individual.try_emplace(Kind, 1, RecordSize);
if (!Iter.second)
Iter.first->second.update(RecordSize);
}
Stat Totals;
DenseMap<uint32_t, Stat> Individual;
std::vector<KindAndStat> getStatsSortedBySize() const;
};
class DumpOutputStyle : public OutputStyle {
public:
DumpOutputStyle(InputFile &File);
~DumpOutputStyle() override;
Error dump() override;
private:
PDBFile &getPdb();
object::COFFObjectFile &getObj();
void printStreamNotValidForObj();
void printStreamNotPresent(StringRef StreamName);
Error dumpFileSummary();
Error dumpStreamSummary();
Error dumpSymbolStats();
Error dumpUdtStats();
Error dumpTypeStats();
Error dumpNamedStreams();
Error dumpStringTable();
Error dumpStringTableFromPdb();
Error dumpStringTableFromObj();
Error dumpLines();
Error dumpInlineeLines();
Error dumpXmi();
Error dumpXme();
Error dumpFpo();
Error dumpOldFpo(PDBFile &File);
Error dumpNewFpo(PDBFile &File);
Error dumpTpiStream(uint32_t StreamIdx);
Error dumpTypesFromObjectFile();
Error dumpTypeRefStats();
Error dumpModules();
Error dumpModuleFiles();
Error dumpModuleSymsForPdb();
Error dumpModuleSymsForObj();
Error dumpGSIRecords();
Error dumpGlobals();
Error dumpPublics();
Error dumpSymbolsFromGSI(const GSIHashTable &Table, bool HashExtras);
Error dumpSectionHeaders();
Error dumpSectionContribs();
Error dumpSectionMap();
void dumpSectionHeaders(StringRef Label, DbgHeaderType Type);
InputFile &File;
std::unique_ptr<TypeReferenceTracker> RefTracker;
LinePrinter P;
SmallVector<StreamInfo, 32> StreamPurposes;
};
} // namespace pdb
} // namespace llvm
#endif