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Differential D40980

Add /DEBUG:GHASH option to LLD to speed up COFF linking
ClosedPublic

Authored by zturner on Dec 7 2017, 12:47 PM.

Details

Reviewers
ruiu
rnk
Commits
rG0d07a8e948ea: [COFF] Teach LLD to use the COFF .debug$H section.
rLLD320719: [COFF] Teach LLD to use the COFF .debug$H section.
rL320719: [COFF] Teach LLD to use the COFF .debug$H section.
Summary

Use of this flag causes LLD to try to use the .debug$H for each input object file in which it is present. The original code path (e.g. /DEBUG) is unchanged and still uses non-cryptographic, non-tree hashes that are computed entirely by the linker.

Some preliminary timings shows modest performance gains on real world programs. For example, on my machine linking clang with /DEBUG takes about 23 seconds, and with /DEBUG:GHASH takes about 17 seconds. So this is a 1.35x speedup. That said, this implementation is completely unoptimized. I haven't profiled to find out what the current bottlenecks are, and it's possible we are doing something terribly simple that could lead to further gains.

Note that this implementation does not compute missing hashes in parallel. That's one avenue for exploration, but I put some debugging metrics in, and found that when linking clang, we only computed about 31,000 SHA1 hashes serially. So, there is not likely a significant performance win to be had from computing missing hashes in parallel, and it also suggests there is not a big win to be had from post-processing system libraries to produce a .debug$H section. Just having a large enough application that the number of application defined types dominates the number of system defined types is sufficient to get good performance.

On the other hand, if we don't compute hashes in parallel, it does lead to poor worst case performance. I also tried using /DEBUG:GHASH when none of the object files contained a .debug$H section. In that case, we were twice as slow as /DEBUG. This is consistent with my earlier findings that swapping the hash algorithm from CityHash to SHA1 and makign no other changes led to a 2x slowdown.

Diff Detail

Repository
rL LLVM

Event Timeline

zturner created this revision.Dec 7 2017, 12:47 PM
Herald added subscribers: JDevlieghere, hiraditya. · View Herald TranscriptDec 7 2017, 12:47 PM
ruiu added inline comments.Dec 7 2017, 1:59 PM
lld/COFF/Config.h
92 ↗(On Diff #126021)

We are using the same name for the command line option and the variable name, so it should be DebugGHashes.

lld/COFF/PDB.cpp
77–81 ↗(On Diff #126021)

Are these classes expensive to instantiate? If the cost of instantiation is negligible, I'd just create four instances as members of this class.

176 ↗(On Diff #126021)

Please add a function comment saying that this is .debug$H is a clang extension and this function checks if that is available.

182–190 ↗(On Diff #126021)
return Header->Magic == COFF::DEBUG_HASHES_SECTION_MAGIC &&
       Header->Version == 0 &&
       Header->HashAlgorithm == uint16_t(GlobalTypeHashAlg::SHA1) &&
       DebugH.size() % 20 == 0;

is probably a bit more straightforward.

196 ↗(On Diff #126021)

You can omit llvm::.

197 ↗(On Diff #126021)

auto -> ArrayRef<uint8_t>

262 ↗(On Diff #126021)

auto -> Optional<ArrayRef<uint8_t>>

llvm/lib/DebugInfo/CodeView/TypeStreamMerger.cpp
103 ↗(On Diff #126021)

Why so many parentheses?

zturner added inline comments.Dec 7 2017, 2:05 PM
lld/COFF/PDB.cpp
262 ↗(On Diff #126021)

I agree with your previous comment about changing auto, but this one is a bit longer, and when initialized inside the condition of an if statement, I think it's pretty idiomatic to use auto. So I would actually prefer to leave this one as is, but if you feel strongly I can still change it.

ruiu added inline comments.Dec 7 2017, 2:08 PM
lld/COFF/PDB.cpp
262 ↗(On Diff #126021)

In lld even if it is a bit too long, we usually write the actual type name instead of auto, so I think I'd prefer doing the same thing here for consistency. Note that there are few exceptions to that policy, e.g. we write auto Err instead of std::error_code Err.

zturner updated this revision to Diff 126588.Dec 12 2017, 11:34 AM

Updated with suggestions.

rnk accepted this revision.Dec 13 2017, 1:23 PM

I'm happy with this, but let @ruiu sign off.

lld/COFF/PDB.cpp
189 ↗(On Diff #126588)

s/llvm::None/None/

lld/test/COFF/Inputs/pdb-hashes-1.yaml
36 ↗(On Diff #126588)

Remove the SectionData from .debug$S and .debug$T (also, we should fix obj2yaml already =P)

This revision is now accepted and ready to land.Dec 13 2017, 1:23 PM
ruiu accepted this revision.Dec 13 2017, 1:40 PM

LGTM

Closed by commit rL320719: [COFF] Teach LLD to use the COFF .debug$H section. (authored by zturner). · Explain WhyDec 14 2017, 10:07 AM
This revision was automatically updated to reflect the committed changes.

Revision Contents

PathSize
lld/
trunk/
COFF/
1 line
4 lines
1 line
133 lines
test/
COFF/
Inputs/
540 lines
321 lines
355 lines
93 lines
llvm/
trunk/
include/
llvm/
DebugInfo/
CodeView/
28 lines
18 lines
Object/
6 lines
lib/
DebugInfo/
CodeView/
2 lines
127 lines

Diff 126988

lld/trunk/COFF/Config.h

Show First 20 Lines • Show All 83 Lines • ▼ Show 20 Linesstruct Configuration {
std::string OutputFile; std::string OutputFile;
std::string ImportName; std::string ImportName;
bool DoGC = true; bool DoGC = true;
bool DoICF = true; bool DoICF = true;
bool Relocatable = true; bool Relocatable = true;
bool Force = false; bool Force = false;
bool Debug = false; bool Debug = false;
bool DebugDwarf = false; bool DebugDwarf = false;
bool DebugGHashes = false;
unsigned DebugTypes = static_cast<unsigned>(DebugType::None); unsigned DebugTypes = static_cast<unsigned>(DebugType::None);
llvm::SmallString<128> PDBPath; llvm::SmallString<128> PDBPath;
std::vector<llvm::StringRef> Argv; std::vector<llvm::StringRef> Argv;
// Symbols in this set are considered as live by the garbage collector. // Symbols in this set are considered as live by the garbage collector.
std::vector<Symbol *> GCRoot; std::vector<Symbol *> GCRoot;
std::set<StringRef> NoDefaultLibs; std::set<StringRef> NoDefaultLibs;
▲ Show 20 Lines • Show All 84 Lines • Show Last 20 Lines

lld/trunk/COFF/Driver.cpp

Show First 20 Lines • Show All 803 Lines • ▼ Show 20 Lines if (Args.hasArg(OPT_verbose))
Config->Verbose = true; Config->Verbose = true;
errorHandler().Verbose = Config->Verbose; errorHandler().Verbose = Config->Verbose;
// Handle /force or /force:unresolved // Handle /force or /force:unresolved
if (Args.hasArg(OPT_force) || Args.hasArg(OPT_force_unresolved)) if (Args.hasArg(OPT_force) || Args.hasArg(OPT_force_unresolved))
Config->Force = true; Config->Force = true;
// Handle /debug // Handle /debug
if (Args.hasArg(OPT_debug) || Args.hasArg(OPT_debug_dwarf)) { if (Args.hasArg(OPT_debug) || Args.hasArg(OPT_debug_dwarf) ||
Args.hasArg(OPT_debug_ghash)) {
Config->Debug = true; Config->Debug = true;
if (auto *Arg = Args.getLastArg(OPT_debugtype)) if (auto *Arg = Args.getLastArg(OPT_debugtype))
Config->DebugTypes = parseDebugType(Arg->getValue()); Config->DebugTypes = parseDebugType(Arg->getValue());
else else
Config->DebugTypes = getDefaultDebugType(Args); Config->DebugTypes = getDefaultDebugType(Args);
} }
// Create a dummy PDB file to satisfy build sytem rules. // Create a dummy PDB file to satisfy build sytem rules.
▲ Show 20 Lines • Show All 192 Lines • ▼ Show 20 Linesvoid LinkerDriver::link(ArrayRef<const char *> ArgsArr) {
// Handle miscellaneous boolean flags. // Handle miscellaneous boolean flags.
Config->AllowBind = Args.hasFlag(OPT_allowbind, OPT_allowbind_no, true); Config->AllowBind = Args.hasFlag(OPT_allowbind, OPT_allowbind_no, true);
Config->AllowIsolation = Config->AllowIsolation =
Args.hasFlag(OPT_allowisolation, OPT_allowisolation_no, true); Args.hasFlag(OPT_allowisolation, OPT_allowisolation_no, true);
Config->NxCompat = Args.hasFlag(OPT_nxcompat, OPT_nxcompat_no, true); Config->NxCompat = Args.hasFlag(OPT_nxcompat, OPT_nxcompat_no, true);
Config->TerminalServerAware = Args.hasFlag(OPT_tsaware, OPT_tsaware_no, true); Config->TerminalServerAware = Args.hasFlag(OPT_tsaware, OPT_tsaware_no, true);
Config->DebugDwarf = Args.hasArg(OPT_debug_dwarf); Config->DebugDwarf = Args.hasArg(OPT_debug_dwarf);
Config->DebugGHashes = Args.hasArg(OPT_debug_ghash);
Config->MapFile = getMapFile(Args); Config->MapFile = getMapFile(Args);
if (errorCount()) if (errorCount())
return; return;
bool WholeArchiveFlag = Args.hasArg(OPT_wholearchive_flag); bool WholeArchiveFlag = Args.hasArg(OPT_wholearchive_flag);
// Create a list of input files. Files can be given as arguments // Create a list of input files. Files can be given as arguments
▲ Show 20 Lines • Show All 293 Lines • Show Last 20 Lines

lld/trunk/COFF/Options.td

Show First 20 Lines • Show All 111 Lines • ▼ Show 20 Lines
defm tsaware : B<"tsaware", defm tsaware : B<"tsaware",
"Create Terminal Server aware executable (default)", "Create Terminal Server aware executable (default)",
"Create non-Terminal Server aware executable">; "Create non-Terminal Server aware executable">;
def help : F<"help">; def help : F<"help">;
def help_q : Flag<["/?", "-?"], "">, Alias<help>; def help_q : Flag<["/?", "-?"], "">, Alias<help>;
// LLD extensions // LLD extensions
def debug_ghash : F<"debug:ghash">;
def debug_dwarf : F<"debug:dwarf">; def debug_dwarf : F<"debug:dwarf">;
def export_all_symbols : F<"export-all-symbols">; def export_all_symbols : F<"export-all-symbols">;
def nopdb : F<"nopdb">, HelpText<"Disable PDB generation for DWARF users">; def nopdb : F<"nopdb">, HelpText<"Disable PDB generation for DWARF users">;
def lldmingw : F<"lldmingw">; def lldmingw : F<"lldmingw">;
def msvclto : F<"msvclto">; def msvclto : F<"msvclto">;
def output_def : Joined<["/", "-"], "output-def:">; def output_def : Joined<["/", "-"], "output-def:">;
def rsp_quoting : Joined<["--"], "rsp-quoting=">, def rsp_quoting : Joined<["--"], "rsp-quoting=">,
HelpText<"Quoting style for response files, 'windows' (default) or 'posix'">; HelpText<"Quoting style for response files, 'windows' (default) or 'posix'">;
Show All 38 Lines

lld/trunk/COFF/PDB.cpp

Show All 11 Lines
#include "Config.h" #include "Config.h"
#include "Driver.h" #include "Driver.h"
#include "SymbolTable.h" #include "SymbolTable.h"
#include "Symbols.h" #include "Symbols.h"
#include "Writer.h" #include "Writer.h"
#include "lld/Common/ErrorHandler.h" #include "lld/Common/ErrorHandler.h"
#include "llvm/DebugInfo/CodeView/CVDebugRecord.h" #include "llvm/DebugInfo/CodeView/CVDebugRecord.h"
#include "llvm/DebugInfo/CodeView/DebugSubsectionRecord.h" #include "llvm/DebugInfo/CodeView/DebugSubsectionRecord.h"
#include "llvm/DebugInfo/CodeView/GlobalTypeTableBuilder.h"
#include "llvm/DebugInfo/CodeView/LazyRandomTypeCollection.h" #include "llvm/DebugInfo/CodeView/LazyRandomTypeCollection.h"
#include "llvm/DebugInfo/CodeView/MergingTypeTableBuilder.h" #include "llvm/DebugInfo/CodeView/MergingTypeTableBuilder.h"
#include "llvm/DebugInfo/CodeView/RecordName.h" #include "llvm/DebugInfo/CodeView/RecordName.h"
#include "llvm/DebugInfo/CodeView/SymbolDeserializer.h" #include "llvm/DebugInfo/CodeView/SymbolDeserializer.h"
#include "llvm/DebugInfo/CodeView/SymbolSerializer.h" #include "llvm/DebugInfo/CodeView/SymbolSerializer.h"
#include "llvm/DebugInfo/CodeView/TypeDeserializer.h" #include "llvm/DebugInfo/CodeView/TypeDeserializer.h"
#include "llvm/DebugInfo/CodeView/TypeDumpVisitor.h" #include "llvm/DebugInfo/CodeView/TypeDumpVisitor.h"
#include "llvm/DebugInfo/CodeView/TypeIndexDiscovery.h" #include "llvm/DebugInfo/CodeView/TypeIndexDiscovery.h"
Show All 39 Linesstruct CVIndexMap {
SmallVector<TypeIndex, 0> TPIMap; SmallVector<TypeIndex, 0> TPIMap;
SmallVector<TypeIndex, 0> IPIMap; SmallVector<TypeIndex, 0> IPIMap;
bool IsTypeServerMap = false; bool IsTypeServerMap = false;
}; };
class PDBLinker { class PDBLinker {
public: public:
PDBLinker(SymbolTable *Symtab) PDBLinker(SymbolTable *Symtab)
: Alloc(), Symtab(Symtab), Builder(Alloc), TypeTable(Alloc), : Alloc(), Symtab(Symtab), Builder(Alloc), GlobalTypeTable(Alloc),
IDTable(Alloc) {} GlobalIDTable(Alloc), TypeTable(Alloc), IDTable(Alloc) {}
/// Emit the basic PDB structure: initial streams, headers, etc. /// Emit the basic PDB structure: initial streams, headers, etc.
void initialize(const llvm::codeview::DebugInfo &BuildId); void initialize(const llvm::codeview::DebugInfo &BuildId);
/// Link CodeView from each object file in the symbol table into the PDB. /// Link CodeView from each object file in the symbol table into the PDB.
void addObjectsToPDB(); void addObjectsToPDB();
/// Link CodeView from a single object file into the PDB. /// Link CodeView from a single object file into the PDB.
Show All 33 Linesprivate:
pdb::PDBFileBuilder Builder; pdb::PDBFileBuilder Builder;
/// Type records that will go into the PDB TPI stream. /// Type records that will go into the PDB TPI stream.
MergingTypeTableBuilder TypeTable; MergingTypeTableBuilder TypeTable;
/// Item records that will go into the PDB IPI stream. /// Item records that will go into the PDB IPI stream.
MergingTypeTableBuilder IDTable; MergingTypeTableBuilder IDTable;
/// Type records that will go into the PDB TPI stream (for /DEBUG:GHASH)
GlobalTypeTableBuilder GlobalTypeTable;
/// Item records that will go into the PDB IPI stream (for /DEBUG:GHASH)
GlobalTypeTableBuilder GlobalIDTable;
/// PDBs use a single global string table for filenames in the file checksum /// PDBs use a single global string table for filenames in the file checksum
/// table. /// table.
DebugStringTableSubsection PDBStrTab; DebugStringTableSubsection PDBStrTab;
llvm::SmallString<128> NativePath; llvm::SmallString<128> NativePath;
std::vector<pdb::SecMapEntry> SectionMap; std::vector<pdb::SecMapEntry> SectionMap;
Show All 21 Lines
} }
static ArrayRef<uint8_t> getDebugSection(ObjFile *File, StringRef SecName) { static ArrayRef<uint8_t> getDebugSection(ObjFile *File, StringRef SecName) {
if (SectionChunk *Sec = findByName(File->getDebugChunks(), SecName)) if (SectionChunk *Sec = findByName(File->getDebugChunks(), SecName))
return consumeDebugMagic(Sec->getContents(), SecName); return consumeDebugMagic(Sec->getContents(), SecName);
return {}; return {};
} }
// A COFF .debug$H section is currently a clang extension. This function checks
// if a .debug$H section is in a format that we expect / understand, so that we
// can ignore any sections which are coincidentally also named .debug$H but do
// not contain a format we recognize.
static bool canUseDebugH(ArrayRef<uint8_t> DebugH) {
if (DebugH.size() < sizeof(object::debug_h_header))
return false;
auto *Header =
reinterpret_cast<const object::debug_h_header *>(DebugH.data());
DebugH = DebugH.drop_front(sizeof(object::debug_h_header));
return Header->Magic == COFF::DEBUG_HASHES_SECTION_MAGIC &&
Header->Version == 0 &&
Header->HashAlgorithm == uint16_t(GlobalTypeHashAlg::SHA1) &&
(DebugH.size() % 20 == 0);
}
static Optional<ArrayRef<uint8_t>> getDebugH(ObjFile *File) {
SectionChunk *Sec = findByName(File->getDebugChunks(), ".debug$H");
if (!Sec)
return llvm::None;
ArrayRef<uint8_t> Contents = Sec->getContents();
if (!canUseDebugH(Contents))
return None;
return Contents;
}
static ArrayRef<GloballyHashedType>
getHashesFromDebugH(ArrayRef<uint8_t> DebugH) {
assert(canUseDebugH(DebugH));
DebugH = DebugH.drop_front(sizeof(object::debug_h_header));
uint32_t Count = DebugH.size() / sizeof(GloballyHashedType);
return {reinterpret_cast<const GloballyHashedType *>(DebugH.data()), Count};
}
static void addTypeInfo(pdb::TpiStreamBuilder &TpiBuilder, static void addTypeInfo(pdb::TpiStreamBuilder &TpiBuilder,
TypeCollection &TypeTable) { TypeCollection &TypeTable) {
// Start the TPI or IPI stream header. // Start the TPI or IPI stream header.
TpiBuilder.setVersionHeader(pdb::PdbTpiV80); TpiBuilder.setVersionHeader(pdb::PdbTpiV80);
// Flatten the in memory type table and hash each type. // Flatten the in memory type table and hash each type.
TypeTable.ForEachRecord([&](TypeIndex TI, const CVType &Type) { TypeTable.ForEachRecord([&](TypeIndex TI, const CVType &Type) {
auto Hash = pdb::hashTypeRecord(Type); auto Hash = pdb::hashTypeRecord(Type);
Show All 31 Linesconst CVIndexMap &PDBLinker::mergeDebugT(ObjFile *File,
// Look through type servers. If we've already seen this type server, don't // Look through type servers. If we've already seen this type server, don't
// merge any type information. // merge any type information.
if (Optional<TypeServer2Record> TS = maybeReadTypeServerRecord(Types)) if (Optional<TypeServer2Record> TS = maybeReadTypeServerRecord(Types))
return maybeMergeTypeServerPDB(File, *TS); return maybeMergeTypeServerPDB(File, *TS);
// This is a /Z7 object. Fill in the temporary, caller-provided // This is a /Z7 object. Fill in the temporary, caller-provided
// ObjectIndexMap. // ObjectIndexMap.
if (Config->DebugGHashes) {
ArrayRef<GloballyHashedType> Hashes;
std::vector<GloballyHashedType> OwnedHashes;
if (Optional<ArrayRef<uint8_t>> DebugH = getDebugH(File))
Hashes = getHashesFromDebugH(*DebugH);
else {
OwnedHashes = GloballyHashedType::hashTypes(Types);
Hashes = OwnedHashes;
}
if (auto Err = mergeTypeAndIdRecords(GlobalIDTable, GlobalTypeTable,
ObjectIndexMap.TPIMap, Types, Hashes))
fatal("codeview::mergeTypeAndIdRecords failed: " +
toString(std::move(Err)));
} else {
if (auto Err = mergeTypeAndIdRecords(IDTable, TypeTable, if (auto Err = mergeTypeAndIdRecords(IDTable, TypeTable,
ObjectIndexMap.TPIMap, Types)) ObjectIndexMap.TPIMap, Types))
fatal("codeview::mergeTypeAndIdRecords failed: " + fatal("codeview::mergeTypeAndIdRecords failed: " +
toString(std::move(Err))); toString(std::move(Err)));
}
return ObjectIndexMap; return ObjectIndexMap;
} }
static Expected<std::unique_ptr<pdb::NativeSession>> static Expected<std::unique_ptr<pdb::NativeSession>>
tryToLoadPDB(const GUID &GuidFromObj, StringRef TSPath) { tryToLoadPDB(const GUID &GuidFromObj, StringRef TSPath) {
ErrorOr<std::unique_ptr<MemoryBuffer>> MBOrErr = MemoryBuffer::getFile( ErrorOr<std::unique_ptr<MemoryBuffer>> MBOrErr = MemoryBuffer::getFile(
TSPath, /*FileSize=*/-1, /*RequiresNullTerminator=*/false); TSPath, /*FileSize=*/-1, /*RequiresNullTerminator=*/false);
if (!MBOrErr) if (!MBOrErr)
▲ Show 20 Lines • Show All 47 Lines • ▼ Show 20 Lines if (!ExpectedSession) {
SmallString<128> Path = sys::path::parent_path(LocalPath); SmallString<128> Path = sys::path::parent_path(LocalPath);
sys::path::append( sys::path::append(
Path, sys::path::filename(TS.getName(), sys::path::Style::windows)); Path, sys::path::filename(TS.getName(), sys::path::Style::windows));
ExpectedSession = tryToLoadPDB(TS.getGuid(), Path); ExpectedSession = tryToLoadPDB(TS.getGuid(), Path);
} }
if (auto E = ExpectedSession.takeError()) if (auto E = ExpectedSession.takeError())
fatal("Type server PDB was not found: " + toString(std::move(E))); fatal("Type server PDB was not found: " + toString(std::move(E)));
// Merge TPI first, because the IPI stream will reference type indices.
auto ExpectedTpi = (*ExpectedSession)->getPDBFile().getPDBTpiStream(); auto ExpectedTpi = (*ExpectedSession)->getPDBFile().getPDBTpiStream();
if (auto E = ExpectedTpi.takeError()) if (auto E = ExpectedTpi.takeError())
fatal("Type server does not have TPI stream: " + toString(std::move(E))); fatal("Type server does not have TPI stream: " + toString(std::move(E)));
auto ExpectedIpi = (*ExpectedSession)->getPDBFile().getPDBIpiStream();
if (auto E = ExpectedIpi.takeError())
fatal("Type server does not have TPI stream: " + toString(std::move(E)));
if (Config->DebugGHashes) {
// PDBs do not actually store global hashes, so when merging a type server
// PDB we have to synthesize global hashes. To do this, we first synthesize
// global hashes for the TPI stream, since it is independent, then we
// synthesize hashes for the IPI stream, using the hashes for the TPI stream
// as inputs.
auto TpiHashes = GloballyHashedType::hashTypes(ExpectedTpi->typeArray());
auto IpiHashes =
GloballyHashedType::hashIds(ExpectedIpi->typeArray(), TpiHashes);
// Merge TPI first, because the IPI stream will reference type indices.
if (auto Err = mergeTypeRecords(GlobalTypeTable, IndexMap.TPIMap,
ExpectedTpi->typeArray(), TpiHashes))
fatal("codeview::mergeTypeRecords failed: " + toString(std::move(Err)));
// Merge IPI.
if (auto Err =
mergeIdRecords(GlobalIDTable, IndexMap.TPIMap, IndexMap.IPIMap,
ExpectedIpi->typeArray(), IpiHashes))
fatal("codeview::mergeIdRecords failed: " + toString(std::move(Err)));
} else {
// Merge TPI first, because the IPI stream will reference type indices.
if (auto Err = mergeTypeRecords(TypeTable, IndexMap.TPIMap, if (auto Err = mergeTypeRecords(TypeTable, IndexMap.TPIMap,
ExpectedTpi->typeArray())) ExpectedTpi->typeArray()))
fatal("codeview::mergeTypeRecords failed: " + toString(std::move(Err))); fatal("codeview::mergeTypeRecords failed: " + toString(std::move(Err)));
// Merge IPI. // Merge IPI.
auto ExpectedIpi = (*ExpectedSession)->getPDBFile().getPDBIpiStream();
if (auto E = ExpectedIpi.takeError())
fatal("Type server does not have TPI stream: " + toString(std::move(E)));
if (auto Err = mergeIdRecords(IDTable, IndexMap.TPIMap, IndexMap.IPIMap, if (auto Err = mergeIdRecords(IDTable, IndexMap.TPIMap, IndexMap.IPIMap,
ExpectedIpi->typeArray())) ExpectedIpi->typeArray()))
fatal("codeview::mergeIdRecords failed: " + toString(std::move(Err))); fatal("codeview::mergeIdRecords failed: " + toString(std::move(Err)));
}
return IndexMap; return IndexMap;
} }
static bool remapTypeIndex(TypeIndex &TI, ArrayRef<TypeIndex> TypeIndexMap) { static bool remapTypeIndex(TypeIndex &TI, ArrayRef<TypeIndex> TypeIndexMap) {
if (TI.isSimple()) if (TI.isSimple())
return true; return true;
if (TI.toArrayIndex() >= TypeIndexMap.size()) if (TI.toArrayIndex() >= TypeIndexMap.size())
▲ Show 20 Lines • Show All 353 Lines • ▼ Show 20 Lines for (const DebugSubsectionRecord &SS : Subsections) {
ExitOnErr(Checksums.initialize(SS.getRecordData())); ExitOnErr(Checksums.initialize(SS.getRecordData()));
break; break;
case DebugSubsectionKind::Lines: case DebugSubsectionKind::Lines:
// We can add the relocated line table directly to the PDB without // We can add the relocated line table directly to the PDB without
// modification because the file checksum offsets will stay the same. // modification because the file checksum offsets will stay the same.
File->ModuleDBI->addDebugSubsection(SS); File->ModuleDBI->addDebugSubsection(SS);
break; break;
case DebugSubsectionKind::Symbols: case DebugSubsectionKind::Symbols:
if (Config->DebugGHashes) {
mergeSymbolRecords(Alloc, File, Builder.getGsiBuilder(), IndexMap,
GlobalIDTable, SS.getRecordData());
} else {
mergeSymbolRecords(Alloc, File, Builder.getGsiBuilder(), IndexMap, mergeSymbolRecords(Alloc, File, Builder.getGsiBuilder(), IndexMap,
IDTable, SS.getRecordData()); IDTable, SS.getRecordData());
}
break; break;
default: default:
// FIXME: Process the rest of the subsections. // FIXME: Process the rest of the subsections.
break; break;
} }
} }
if (Checksums.valid()) { if (Checksums.valid()) {
Show All 36 Lines
// Add all object files to the PDB. Merge .debug$T sections into IpiData and // Add all object files to the PDB. Merge .debug$T sections into IpiData and
// TpiData. // TpiData.
void PDBLinker::addObjectsToPDB() { void PDBLinker::addObjectsToPDB() {
for (ObjFile *File : ObjFile::Instances) for (ObjFile *File : ObjFile::Instances)
addObjFile(File); addObjFile(File);
Builder.getStringTableBuilder().setStrings(PDBStrTab); Builder.getStringTableBuilder().setStrings(PDBStrTab);
// Construct TPI stream contents. // Construct TPI and IPI stream contents.
if (Config->DebugGHashes) {
addTypeInfo(Builder.getTpiBuilder(), GlobalTypeTable);
addTypeInfo(Builder.getIpiBuilder(), GlobalIDTable);
} else {
addTypeInfo(Builder.getTpiBuilder(), TypeTable); addTypeInfo(Builder.getTpiBuilder(), TypeTable);
// Construct IPI stream contents.
addTypeInfo(Builder.getIpiBuilder(), IDTable); addTypeInfo(Builder.getIpiBuilder(), IDTable);
}
// Compute the public and global symbols. // Compute the public and global symbols.
auto &GsiBuilder = Builder.getGsiBuilder(); auto &GsiBuilder = Builder.getGsiBuilder();
std::vector<PublicSym32> Publics; std::vector<PublicSym32> Publics;
Symtab->forEachSymbol([&Publics](Symbol *S) { Symtab->forEachSymbol([&Publics](Symbol *S) {
// Only emit defined, live symbols that have a chunk. // Only emit defined, live symbols that have a chunk.
auto *Def = dyn_cast<Defined>(S); auto *Def = dyn_cast<Defined>(S);
if (Def && Def->isLive() && Def->getChunk()) if (Def && Def->isLive() && Def->getChunk())
▲ Show 20 Lines • Show All 181 Lines • Show Last 20 Lines

lld/trunk/test/COFF/Inputs/pdb-hashes-1.yaml

--- !COFF
header:
Machine: IMAGE_FILE_MACHINE_I386
Characteristics: [ ]
sections:
- Name: .text
Characteristics: [ IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ ]
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...

lld/trunk/test/COFF/Inputs/pdb-hashes-2-missing.yaml

--- !COFF
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- Kind: S_DEFRANGE_REGISTER_REL
DefRangeRegisterRelSym:
- Kind: S_PROC_ID_END
ScopeEndSym:
- !Lines
CodeSize: 25
Flags: [ ]
RelocOffset: 0
RelocSegment: 0
Blocks:
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Lines:
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LineStart: 3
IsStatement: false
EndDelta: 0
- Offset: 7
LineStart: 4
IsStatement: false
EndDelta: 0
Columns:
- !Symbols
Records:
- Kind: S_UDT
UDTSym:
Type: 4106
UDTName: 'NS::Foo'
- !FileChecksums
Checksums:
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Kind: MD5
Checksum: 59DFAC75D18675AED1AD169FE316317E
- !StringTable
Strings:
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- '$T0 .raSearch = $eip $T0 ^ = $esp $T0 4 + = '
- '$T0 .raSearch = $eip $T0 ^ = $esp $T0 4 + = $ebp $T0 4 - ^ = '
- '$T0 $ebp 4 + = $eip $T0 ^ = $esp $T0 4 + = $ebp $T0 4 - ^ = '
- ''
Relocations:
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SymbolName: '?func@NS@@YAHABUFoo@1@@Z'
Type: IMAGE_REL_I386_DIR32NB
- VirtualAddress: 208
SymbolName: '?func@NS@@YAHABUFoo@1@@Z'
Type: IMAGE_REL_I386_SECREL
- VirtualAddress: 212
SymbolName: '?func@NS@@YAHABUFoo@1@@Z'
Type: IMAGE_REL_I386_SECTION
- VirtualAddress: 248
SymbolName: .text
Type: IMAGE_REL_I386_SECREL
- VirtualAddress: 252
SymbolName: .text
Type: IMAGE_REL_I386_SECTION
- VirtualAddress: 268
SymbolName: '?func@NS@@YAHABUFoo@1@@Z'
Type: IMAGE_REL_I386_SECREL
- VirtualAddress: 272
SymbolName: '?func@NS@@YAHABUFoo@1@@Z'
Type: IMAGE_REL_I386_SECTION
- Name: '.debug$T'
Characteristics: [ IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ ]
Alignment: 4
SectionData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
Types:
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StringId:
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String: NS
- Kind: LF_STRUCTURE
Class:
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Options: [ None, ForwardReference, HasUniqueName ]
FieldList: 0
Name: 'NS::Foo'
UniqueName: '.?AUFoo@NS@@'
DerivationList: 0
VTableShape: 0
Size: 0
- Kind: LF_MODIFIER
Modifier:
ModifiedType: 4097
Modifiers: [ None, Const ]
- Kind: LF_POINTER
Pointer:
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Attrs: 32810
- Kind: LF_ARGLIST
ArgList:
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- Kind: LF_PROCEDURE
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CallConv: NearC
Options: [ None ]
ParameterCount: 1
ArgumentList: 4100
- Kind: LF_POINTER
Pointer:
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Attrs: 32778
- Kind: LF_ARGLIST
ArgList:
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ClassType: 4097
ThisType: 4102
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- Kind: LF_FIELDLIST
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Name: X
- Kind: LF_ONEMETHOD
OneMethod:
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Attrs: 3
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Name: Foo
- Kind: LF_STRUCTURE
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Options: [ None, HasUniqueName ]
FieldList: 4105
Name: 'NS::Foo'
UniqueName: '.?AUFoo@NS@@'
DerivationList: 0
VTableShape: 0
Size: 4
- Kind: LF_STRING_ID
StringId:
Id: 0
String: 'D:\src\llvmbuild\clang\Debug\x86\obj.h'
- Kind: LF_UDT_SRC_LINE
UdtSourceLine:
UDT: 4106
SourceFile: 4107
LineNumber: 2
- Kind: LF_FUNC_ID
FuncId:
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FunctionType: 4101
Name: func
symbols:
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Value: 0
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
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NumberOfRelocations: 0
NumberOfLinenumbers: 0
CheckSum: 1820185021
Number: 1
- Name: .data
Value: 0
SectionNumber: 2
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
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NumberOfRelocations: 0
NumberOfLinenumbers: 0
CheckSum: 0
Number: 2
- Name: .bss
Value: 0
SectionNumber: 3
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
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NumberOfRelocations: 0
NumberOfLinenumbers: 0
CheckSum: 0
Number: 3
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SectionNumber: 4
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
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NumberOfRelocations: 0
NumberOfLinenumbers: 0
CheckSum: 149686238
Number: 4
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Value: 0
SectionNumber: 5
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
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NumberOfRelocations: 7
NumberOfLinenumbers: 0
CheckSum: 2847177244
Number: 5
- Name: '.debug$T'
Value: 0
SectionNumber: 6
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
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NumberOfRelocations: 0
NumberOfLinenumbers: 0
CheckSum: 2684556216
Number: 6
- Name: '@feat.00'
Value: 1
SectionNumber: -1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
- Name: '?func@NS@@YAHABUFoo@1@@Z'
Value: 0
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_FUNCTION
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
...

lld/trunk/test/COFF/Inputs/pdb-hashes-2.yaml

--- !COFF
header:
Machine: IMAGE_FILE_MACHINE_I386
Characteristics: [ ]
sections:
- Name: .text
Characteristics: [ IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ ]
Alignment: 16
SectionData: 5589E5508B45088B4D088B09C1E1018945FC89C883C4045DC3
- Name: .data
Characteristics: [ IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE ]
Alignment: 4
SectionData: ''
- Name: .bss
Characteristics: [ IMAGE_SCN_CNT_UNINITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE ]
Alignment: 4
SectionData: ''
- Name: .drectve
Characteristics: [ IMAGE_SCN_LNK_INFO, IMAGE_SCN_LNK_REMOVE ]
Alignment: 1
SectionData: 202F44454641554C544C49423A6C6962636D742E6C6962202F44454641554C544C49423A6F6C646E616D65732E6C6962
- Name: '.debug$S'
Characteristics: [ IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ ]
Alignment: 4
SectionData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
Subsections:
- !Symbols
Records:
- Kind: S_COMPILE3
Compile3Sym:
Flags: [ ]
Machine: Pentium3
FrontendMajor: 6
FrontendMinor: 0
FrontendBuild: 0
FrontendQFE: 0
BackendMajor: 6000
BackendMinor: 0
BackendBuild: 0
BackendQFE: 0
Version: 'clang version 6.0.0 '
- !FrameData
Frames:
- CodeSize: 25
FrameFunc: '$T0 .raSearch = $eip $T0 ^ = $esp $T0 4 + = '
LocalSize: 0
MaxStackSize: 0
ParamsSize: 4
PrologSize: 4
RvaStart: 0
SavedRegsSize: 0
- CodeSize: 24
FrameFunc: '$T0 .raSearch = $eip $T0 ^ = $esp $T0 4 + = $ebp $T0 4 - ^ = '
LocalSize: 0
MaxStackSize: 0
ParamsSize: 4
PrologSize: 3
RvaStart: 1
SavedRegsSize: 4
- CodeSize: 22
FrameFunc: '$T0 $ebp 4 + = $eip $T0 ^ = $esp $T0 4 + = $ebp $T0 4 - ^ = '
LocalSize: 0
MaxStackSize: 0
ParamsSize: 4
PrologSize: 1
RvaStart: 3
SavedRegsSize: 4
- !Symbols
Records:
- Kind: S_GPROC32_ID
ProcSym:
CodeSize: 25
DbgStart: 0
DbgEnd: 0
FunctionType: 4109
Flags: [ ]
DisplayName: 'NS::func'
- Kind: S_LOCAL
LocalSym:
Type: 4099
Flags: [ IsParameter ]
VarName: f
- Kind: S_DEFRANGE_REGISTER_REL
DefRangeRegisterRelSym:
- Kind: S_PROC_ID_END
ScopeEndSym:
- !Lines
CodeSize: 25
Flags: [ ]
RelocOffset: 0
RelocSegment: 0
Blocks:
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Lines:
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LineStart: 3
IsStatement: false
EndDelta: 0
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LineStart: 4
IsStatement: false
EndDelta: 0
Columns:
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Records:
- Kind: S_UDT
UDTSym:
Type: 4106
UDTName: 'NS::Foo'
- !FileChecksums
Checksums:
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Kind: MD5
Checksum: 59DFAC75D18675AED1AD169FE316317E
- !StringTable
Strings:
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- '$T0 .raSearch = $eip $T0 ^ = $esp $T0 4 + = '
- '$T0 .raSearch = $eip $T0 ^ = $esp $T0 4 + = $ebp $T0 4 - ^ = '
- '$T0 $ebp 4 + = $eip $T0 ^ = $esp $T0 4 + = $ebp $T0 4 - ^ = '
- ''
Relocations:
- VirtualAddress: 68
SymbolName: '?func@NS@@YAHABUFoo@1@@Z'
Type: IMAGE_REL_I386_DIR32NB
- VirtualAddress: 208
SymbolName: '?func@NS@@YAHABUFoo@1@@Z'
Type: IMAGE_REL_I386_SECREL
- VirtualAddress: 212
SymbolName: '?func@NS@@YAHABUFoo@1@@Z'
Type: IMAGE_REL_I386_SECTION
- VirtualAddress: 248
SymbolName: .text
Type: IMAGE_REL_I386_SECREL
- VirtualAddress: 252
SymbolName: .text
Type: IMAGE_REL_I386_SECTION
- VirtualAddress: 268
SymbolName: '?func@NS@@YAHABUFoo@1@@Z'
Type: IMAGE_REL_I386_SECREL
- VirtualAddress: 272
SymbolName: '?func@NS@@YAHABUFoo@1@@Z'
Type: IMAGE_REL_I386_SECTION
- Name: '.debug$T'
Characteristics: [ IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ ]
Alignment: 4
SectionData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
Types:
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StringId:
Id: 0
String: NS
- Kind: LF_STRUCTURE
Class:
MemberCount: 0
Options: [ None, ForwardReference, HasUniqueName ]
FieldList: 0
Name: 'NS::Foo'
UniqueName: '.?AUFoo@NS@@'
DerivationList: 0
VTableShape: 0
Size: 0
- Kind: LF_MODIFIER
Modifier:
ModifiedType: 4097
Modifiers: [ None, Const ]
- Kind: LF_POINTER
Pointer:
ReferentType: 4098
Attrs: 32810
- Kind: LF_ARGLIST
ArgList:
ArgIndices: [ 4099 ]
- Kind: LF_PROCEDURE
Procedure:
ReturnType: 116
CallConv: NearC
Options: [ None ]
ParameterCount: 1
ArgumentList: 4100
- Kind: LF_POINTER
Pointer:
ReferentType: 4097
Attrs: 32778
- Kind: LF_ARGLIST
ArgList:
ArgIndices: [ 116 ]
- Kind: LF_MFUNCTION
MemberFunction:
ReturnType: 3
ClassType: 4097
ThisType: 4102
CallConv: ThisCall
Options: [ None ]
ParameterCount: 1
ArgumentList: 4103
ThisPointerAdjustment: 0
- Kind: LF_FIELDLIST
FieldList:
- Kind: LF_MEMBER
DataMember:
Attrs: 3
Type: 116
FieldOffset: 0
Name: X
- Kind: LF_ONEMETHOD
OneMethod:
Type: 4104
Attrs: 3
VFTableOffset: -1
Name: Foo
- Kind: LF_STRUCTURE
Class:
MemberCount: 2
Options: [ None, HasUniqueName ]
FieldList: 4105
Name: 'NS::Foo'
UniqueName: '.?AUFoo@NS@@'
DerivationList: 0
VTableShape: 0
Size: 4
- Kind: LF_STRING_ID
StringId:
Id: 0
String: 'D:\src\llvmbuild\clang\Debug\x86\obj.h'
- Kind: LF_UDT_SRC_LINE
UdtSourceLine:
UDT: 4106
SourceFile: 4107
LineNumber: 2
- Kind: LF_FUNC_ID
FuncId:
ParentScope: 4096
FunctionType: 4101
Name: func
- Name: '.debug$H'
Characteristics: [ IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ ]
Alignment: 4
SectionData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
GlobalHashes:
Version: 0
HashAlgorithm: 0
HashValues:
- EC145CD76AEFE74E78880D531132B3BB8FFACEF7
- 9E616EF06A14EA74A2420F9062A1FB04917E5975
- 9949E334BA18509ED692F3C65CE242D8450EBC78
- B81B63AF8316DC324562EB9F0D4A0D708E8A25C2
- 63DB05943C19B84A36719E1E414DDA3EDBDF0053
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- 97DD91CA4D7F1953C314442D5549419E78044E38
- A0BF16BFFAA5EE9C0103E7DBFE9941E63379C0B0
- C0A9021B711ACC4F67008974EBF441031BDD653F
- 6935DFF3112C6A5346EF2AC94B9B7EB56EF55CFA
- 0AF6C1846743F43D846BB19517E12E8873BBA90C
- C41DD1BEAC89CBA8897AC1BA46762E2557A82D89
- DCBC783AF285D9DBB672F67A81E36906B2038B57
symbols:
- Name: .text
Value: 0
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
Length: 25
NumberOfRelocations: 0
NumberOfLinenumbers: 0
CheckSum: 1820185021
Number: 1
- Name: .data
Value: 0
SectionNumber: 2
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
Length: 0
NumberOfRelocations: 0
NumberOfLinenumbers: 0
CheckSum: 0
Number: 2
- Name: .bss
Value: 0
SectionNumber: 3
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
Length: 0
NumberOfRelocations: 0
NumberOfLinenumbers: 0
CheckSum: 0
Number: 3
- Name: .drectve
Value: 0
SectionNumber: 4
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
Length: 48
NumberOfRelocations: 0
NumberOfLinenumbers: 0
CheckSum: 149686238
Number: 4
- Name: '.debug$S'
Value: 0
SectionNumber: 5
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
Length: 584
NumberOfRelocations: 7
NumberOfLinenumbers: 0
CheckSum: 2847177244
Number: 5
- Name: '.debug$T'
Value: 0
SectionNumber: 6
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
Length: 320
NumberOfRelocations: 0
NumberOfLinenumbers: 0
CheckSum: 2684556216
Number: 6
- Name: '.debug$H'
Value: 0
SectionNumber: 7
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
SectionDefinition:
Length: 288
NumberOfRelocations: 0
NumberOfLinenumbers: 0
CheckSum: 2348181452
Number: 7
- Name: '@feat.00'
Value: 1
SectionNumber: -1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_NULL
StorageClass: IMAGE_SYM_CLASS_STATIC
- Name: '?func@NS@@YAHABUFoo@1@@Z'
Value: 0
SectionNumber: 1
SimpleType: IMAGE_SYM_TYPE_NULL
ComplexType: IMAGE_SYM_DTYPE_FUNCTION
StorageClass: IMAGE_SYM_CLASS_EXTERNAL
...

lld/trunk/test/COFF/pdb-global-hashes.test

RUN: yaml2obj %p/Inputs/pdb-hashes-1.yaml > %t.1.obj
RUN: yaml2obj %p/Inputs/pdb-hashes-2.yaml > %t.2.obj
RUN: yaml2obj %p/Inputs/pdb-hashes-2-missing.yaml > %t.2.missing.obj
RUN: lld-link /debug %t.1.obj %t.2.obj /entry:main /nodefaultlib /PDB:%t.nohash.pdb
RUN: lld-link /debug:ghash %t.1.obj %t.2.obj /entry:main /nodefaultlib /PDB:%t.hash.pdb
RUN: lld-link /debug:ghash %t.1.obj %t.2.missing.obj /entry:main /nodefaultlib /PDB:%t.mixed.pdb
RUN: llvm-pdbutil dump -types -ids %t.nohash.pdb | FileCheck %s
RUN: llvm-pdbutil dump -types -ids %t.hash.pdb | FileCheck %s
RUN: llvm-pdbutil dump -types -ids %t.mixed.pdb | FileCheck %s
; These object files were generated via the following inputs and commands:
; ----------------------------------------------
; // obj.h
; namespace NS {
; struct Foo {
; explicit Foo(int x) : X(x) {}
; int X;
; };
;
; int func(const Foo &f);
; }
; ----------------------------------------------
; // obj1.cpp
; #include "obj.h"
;
; int main(int argc, char **argv) {
; NS::Foo f(argc);
; return NS::func(f);
; }
; ----------------------------------------------
; // obj2.cpp
; #include "obj.h"
;
; int NS::func(const Foo &f) {
; return 2 * f.X;
; }
; ----------------------------------------------
; $ clang-cl /Z7 /GS- obj1.cpp /c /o obj1.obj
; $ clang-cl /Z7 /GS- obj2.cpp /c /o obj2.obj
CHECK: Types (TPI Stream)
CHECK-NEXT: ============================================================
CHECK-NEXT: Showing 13 records
CHECK-NEXT: 0x1000 | LF_POINTER [size = 12]
CHECK-NEXT: referent = 0x0470 (char*), mode = pointer, opts = None, kind = ptr32
CHECK-NEXT: 0x1001 | LF_ARGLIST [size = 16]
CHECK-NEXT: 0x0074 (int): `int`
CHECK-NEXT: 0x1000: `char**`
CHECK-NEXT: 0x1002 | LF_PROCEDURE [size = 16]
CHECK-NEXT: return type = 0x0074 (int), # args = 2, param list = 0x1001
CHECK-NEXT: calling conv = cdecl, options = None
CHECK-NEXT: 0x1003 | LF_STRUCTURE [size = 44] `NS::Foo`
CHECK-NEXT: unique name: `.?AUFoo@NS@@`
CHECK-NEXT: vtable: <no type>, base list: <no type>, field list: <no type>
CHECK-NEXT: options: forward ref | has unique name
CHECK-NEXT: 0x1004 | LF_POINTER [size = 12]
CHECK-NEXT: referent = 0x1003, mode = pointer, opts = None, kind = ptr32
CHECK-NEXT: 0x1005 | LF_ARGLIST [size = 12]
CHECK-NEXT: 0x0074 (int): `int`
CHECK-NEXT: 0x1006 | LF_MFUNCTION [size = 28]
CHECK-NEXT: return type = 0x0003 (void), # args = 1, param list = 0x1005
CHECK-NEXT: class type = 0x1003, this type = 0x1004, this adjust = 0
CHECK-NEXT: calling conv = thiscall, options = None
CHECK-NEXT: 0x1007 | LF_FIELDLIST [size = 28]
CHECK-NEXT: - LF_MEMBER [name = `X`, Type = 0x0074 (int), offset = 0, attrs = public]
CHECK-NEXT: - LF_ONEMETHOD [name = `Foo`]
CHECK-NEXT: type = 0x1006, vftable offset = -1, attrs = public
CHECK-NEXT: 0x1008 | LF_STRUCTURE [size = 44] `NS::Foo`
CHECK-NEXT: unique name: `.?AUFoo@NS@@`
CHECK-NEXT: vtable: <no type>, base list: <no type>, field list: 0x1007
CHECK-NEXT: options: has unique name
CHECK-NEXT: 0x1009 | LF_MODIFIER [size = 12]
CHECK-NEXT: referent = 0x1003, modifiers = const
CHECK-NEXT: 0x100A | LF_POINTER [size = 12]
CHECK-NEXT: referent = 0x1009, mode = ref, opts = None, kind = ptr32
CHECK-NEXT: 0x100B | LF_ARGLIST [size = 12]
CHECK-NEXT: 0x100A: `const NS::Foo&`
CHECK-NEXT: 0x100C | LF_PROCEDURE [size = 16]
CHECK-NEXT: return type = 0x0074 (int), # args = 1, param list = 0x100B
CHECK-NEXT: calling conv = cdecl, options = None
CHECK: Types (IPI Stream)
CHECK-NEXT: ============================================================
CHECK-NEXT: Showing 6 records
CHECK-NEXT: 0x1000 | LF_FUNC_ID [size = 20]
CHECK-NEXT: name = main, type = 0x1002, parent scope = <no type>
CHECK-NEXT: 0x1001 | LF_STRING_ID [size = 48] ID: <no type>, String: D:\src\llvmbuild\clang\Debug\x86\obj.h
CHECK-NEXT: 0x1002 | LF_UDT_SRC_LINE [size = 16]
CHECK-NEXT: udt = 0x1008, file = 4097, line = 2
CHECK-NEXT: 0x1003 | LF_MFUNC_ID [size = 16]
CHECK-NEXT: name = Foo, type = 0x1006, class type = 0x1003
CHECK-NEXT: 0x1004 | LF_STRING_ID [size = 12] ID: <no type>, String: NS
CHECK-NEXT: 0x1005 | LF_FUNC_ID [size = 20]
CHECK-NEXT: name = func, type = 0x100C, parent scope = 0x1004

llvm/trunk/include/llvm/DebugInfo/CodeView/TypeHashing.h

Show First 20 Lines • Show All 82 Lines • ▼ Show 20 Linesstruct GloballyHashedType {
/// Given a sequence of bytes representing a record, compute a global hash for /// Given a sequence of bytes representing a record, compute a global hash for
/// this record. Due to the nature of global hashes incorporating the hashes /// this record. Due to the nature of global hashes incorporating the hashes
/// of referenced records, this function requires a list of types and ids /// of referenced records, this function requires a list of types and ids
/// that RecordData might reference, indexable by TypeIndex. /// that RecordData might reference, indexable by TypeIndex.
static GloballyHashedType hashType(ArrayRef<uint8_t> RecordData, static GloballyHashedType hashType(ArrayRef<uint8_t> RecordData,
ArrayRef<GloballyHashedType> PreviousTypes, ArrayRef<GloballyHashedType> PreviousTypes,
ArrayRef<GloballyHashedType> PreviousIds); ArrayRef<GloballyHashedType> PreviousIds);
/// Given a sequence of bytes representing a record, compute a global hash for
/// this record. Due to the nature of global hashes incorporating the hashes
/// of referenced records, this function requires a list of types and ids
/// that RecordData might reference, indexable by TypeIndex.
static GloballyHashedType hashType(CVType Type,
ArrayRef<GloballyHashedType> PreviousTypes,
ArrayRef<GloballyHashedType> PreviousIds) {
return hashType(Type.RecordData, PreviousTypes, PreviousIds);
}
/// Given a sequence of combined type and ID records, compute global hashes /// Given a sequence of combined type and ID records, compute global hashes
/// for each of them, returning the results in a vector of hashed types. /// for each of them, returning the results in a vector of hashed types.
template <typename Range> template <typename Range>
static std::vector<GloballyHashedType> hashTypes(Range &&Records) { static std::vector<GloballyHashedType> hashTypes(Range &&Records) {
std::vector<GloballyHashedType> Hashes; std::vector<GloballyHashedType> Hashes;
Hashes.reserve(std::distance(std::begin(Records), std::end(Records)));
for (const auto &R : Records) for (const auto &R : Records)
Hashes.push_back(hashType(R, Hashes, Hashes)); Hashes.push_back(hashType(R, Hashes, Hashes));
return Hashes; return Hashes;
} }
/// Given a sequence of combined type and ID records, compute global hashes
/// for each of them, returning the results in a vector of hashed types.
template <typename Range>
static std::vector<GloballyHashedType>
hashIds(Range &&Records, ArrayRef<GloballyHashedType> TypeHashes) {
std::vector<GloballyHashedType> IdHashes;
for (const auto &R : Records)
IdHashes.push_back(hashType(R, TypeHashes, IdHashes));
return IdHashes;
}
static std::vector<GloballyHashedType> static std::vector<GloballyHashedType>
hashTypeCollection(TypeCollection &Types) { hashTypeCollection(TypeCollection &Types) {
std::vector<GloballyHashedType> Hashes; std::vector<GloballyHashedType> Hashes;
Types.ForEachRecord([&Hashes](TypeIndex TI, const CVType &Type) { Types.ForEachRecord([&Hashes](TypeIndex TI, const CVType &Type) {
Hashes.push_back(hashType(Type.RecordData, Hashes, Hashes)); Hashes.push_back(hashType(Type.RecordData, Hashes, Hashes));
}); });
return Hashes; return Hashes;
} }
}; };
static_assert(std::is_trivially_copyable<GloballyHashedType>::value,
"GloballyHashedType must be trivially copyable so that we can "
"reinterpret_cast arrays of hash data to arrays of "
"GloballyHashedType");
} // namespace codeview } // namespace codeview
template <> struct DenseMapInfo<codeview::LocallyHashedType> { template <> struct DenseMapInfo<codeview::LocallyHashedType> {
static codeview::LocallyHashedType Empty; static codeview::LocallyHashedType Empty;
static codeview::LocallyHashedType Tombstone; static codeview::LocallyHashedType Tombstone;
static codeview::LocallyHashedType getEmptyKey() { return Empty; } static codeview::LocallyHashedType getEmptyKey() { return Empty; }
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llvm/trunk/include/llvm/DebugInfo/CodeView/TypeStreamMerger.h

Show All 13 Lines
#include "llvm/ADT/SmallVector.h" #include "llvm/ADT/SmallVector.h"
#include "llvm/DebugInfo/CodeView/TypeRecord.h" #include "llvm/DebugInfo/CodeView/TypeRecord.h"
#include "llvm/Support/Error.h" #include "llvm/Support/Error.h"
namespace llvm { namespace llvm {
namespace codeview { namespace codeview {
class TypeIndex; class TypeIndex;
struct GloballyHashedType;
class GlobalTypeTableBuilder;
class MergingTypeTableBuilder; class MergingTypeTableBuilder;
/// \brief Merge one set of type records into another. This method assumes /// \brief Merge one set of type records into another. This method assumes
/// that all records are type records, and there are no Id records present. /// that all records are type records, and there are no Id records present.
/// ///
/// \param Dest The table to store the re-written type records into. /// \param Dest The table to store the re-written type records into.
/// ///
/// \param SourceToDest A vector, indexed by the TypeIndex in the source /// \param SourceToDest A vector, indexed by the TypeIndex in the source
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/// ///
/// \returns Error::success() if the operation succeeded, otherwise an /// \returns Error::success() if the operation succeeded, otherwise an
/// appropriate error code. /// appropriate error code.
Error mergeTypeAndIdRecords(MergingTypeTableBuilder &DestIds, Error mergeTypeAndIdRecords(MergingTypeTableBuilder &DestIds,
MergingTypeTableBuilder &DestTypes, MergingTypeTableBuilder &DestTypes,
SmallVectorImpl<TypeIndex> &SourceToDest, SmallVectorImpl<TypeIndex> &SourceToDest,
const CVTypeArray &IdsAndTypes); const CVTypeArray &IdsAndTypes);
Error mergeTypeAndIdRecords(GlobalTypeTableBuilder &DestIds,
GlobalTypeTableBuilder &DestTypes,
SmallVectorImpl<TypeIndex> &SourceToDest,
const CVTypeArray &IdsAndTypes,
ArrayRef<GloballyHashedType> Hashes);
Error mergeTypeRecords(GlobalTypeTableBuilder &Dest,
SmallVectorImpl<TypeIndex> &SourceToDest,
const CVTypeArray &Types,
ArrayRef<GloballyHashedType> Hashes);
Error mergeIdRecords(GlobalTypeTableBuilder &Dest, ArrayRef<TypeIndex> Types,
SmallVectorImpl<TypeIndex> &SourceToDest,
const CVTypeArray &Ids,
ArrayRef<GloballyHashedType> Hashes);
} // end namespace codeview } // end namespace codeview
} // end namespace llvm } // end namespace llvm
#endif // LLVM_DEBUGINFO_CODEVIEW_TYPESTREAMMERGER_H #endif // LLVM_DEBUGINFO_CODEVIEW_TYPESTREAMMERGER_H

llvm/trunk/include/llvm/Object/COFF.h

Show First 20 Lines • Show All 737 Lines • ▼ Show 20 Linesstruct coff_resource_dir_table {
support::ulittle32_t Characteristics; support::ulittle32_t Characteristics;
support::ulittle32_t TimeDateStamp; support::ulittle32_t TimeDateStamp;
support::ulittle16_t MajorVersion; support::ulittle16_t MajorVersion;
support::ulittle16_t MinorVersion; support::ulittle16_t MinorVersion;
support::ulittle16_t NumberOfNameEntries; support::ulittle16_t NumberOfNameEntries;
support::ulittle16_t NumberOfIDEntries; support::ulittle16_t NumberOfIDEntries;
}; };
struct debug_h_header {
support::ulittle32_t Magic;
support::ulittle16_t Version;
support::ulittle16_t HashAlgorithm;
};
class COFFObjectFile : public ObjectFile { class COFFObjectFile : public ObjectFile {
private: private:
friend class ImportDirectoryEntryRef; friend class ImportDirectoryEntryRef;
friend class ExportDirectoryEntryRef; friend class ExportDirectoryEntryRef;
const coff_file_header *COFFHeader; const coff_file_header *COFFHeader;
const coff_bigobj_file_header *COFFBigObjHeader; const coff_bigobj_file_header *COFFBigObjHeader;
const pe32_header *PE32Header; const pe32_header *PE32Header;
const pe32plus_header *PE32PlusHeader; const pe32plus_header *PE32PlusHeader;
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llvm/trunk/lib/DebugInfo/CodeView/TypeHashing.cpp

Show First 20 Lines • Show All 48 Lines • ▼ Show 20 Lines for (const auto &Ref : Refs) {
auto RefData = RecordData.slice(Ref.Offset, Ref.Count * sizeof(TypeIndex)); auto RefData = RecordData.slice(Ref.Offset, Ref.Count * sizeof(TypeIndex));
// For each type index referenced, add in the previously computed hash // For each type index referenced, add in the previously computed hash
// value of that type. // value of that type.
ArrayRef<TypeIndex> Indices( ArrayRef<TypeIndex> Indices(
reinterpret_cast<const TypeIndex *>(RefData.data()), Ref.Count); reinterpret_cast<const TypeIndex *>(RefData.data()), Ref.Count);
for (TypeIndex TI : Indices) { for (TypeIndex TI : Indices) {
ArrayRef<uint8_t> BytesToHash; ArrayRef<uint8_t> BytesToHash;
if (TI.isSimple() || TI.isNoneType()) { if (TI.isSimple() || TI.isNoneType() || TI.toArrayIndex() >= Prev.size()) {
const uint8_t *IndexBytes = reinterpret_cast<const uint8_t *>(&TI); const uint8_t *IndexBytes = reinterpret_cast<const uint8_t *>(&TI);
BytesToHash = makeArrayRef(IndexBytes, sizeof(TypeIndex)); BytesToHash = makeArrayRef(IndexBytes, sizeof(TypeIndex));
} else { } else {
BytesToHash = Prev[TI.toArrayIndex()].Hash; BytesToHash = Prev[TI.toArrayIndex()].Hash;
} }
S.update(BytesToHash); S.update(BytesToHash);
} }
Show All 9 Lines

llvm/trunk/lib/DebugInfo/CodeView/TypeStreamMerger.cpp

//===-- TypeStreamMerger.cpp ------------------------------------*- C++ -*-===// //===-- TypeStreamMerger.cpp ------------------------------------*- C++ -*-===//
// //
// The LLVM Compiler Infrastructure // The LLVM Compiler Infrastructure
// //
// This file is distributed under the University of Illinois Open Source // This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details. // License. See LICENSE.TXT for details.
// //
//===----------------------------------------------------------------------===// //===----------------------------------------------------------------------===//
#include "llvm/DebugInfo/CodeView/TypeStreamMerger.h" #include "llvm/DebugInfo/CodeView/TypeStreamMerger.h"
#include "llvm/ADT/SmallString.h" #include "llvm/ADT/SmallString.h"
#include "llvm/ADT/StringExtras.h" #include "llvm/ADT/StringExtras.h"
#include "llvm/DebugInfo/CodeView/GlobalTypeTableBuilder.h"
#include "llvm/DebugInfo/CodeView/MergingTypeTableBuilder.h" #include "llvm/DebugInfo/CodeView/MergingTypeTableBuilder.h"
#include "llvm/DebugInfo/CodeView/TypeIndex.h" #include "llvm/DebugInfo/CodeView/TypeIndex.h"
#include "llvm/DebugInfo/CodeView/TypeIndexDiscovery.h" #include "llvm/DebugInfo/CodeView/TypeIndexDiscovery.h"
#include "llvm/DebugInfo/CodeView/TypeRecord.h" #include "llvm/DebugInfo/CodeView/TypeRecord.h"
#include "llvm/Support/Error.h" #include "llvm/Support/Error.h"
using namespace llvm; using namespace llvm;
using namespace llvm::codeview; using namespace llvm::codeview;
Show All 36 Lines
public: public:
explicit TypeStreamMerger(SmallVectorImpl<TypeIndex> &SourceToDest) explicit TypeStreamMerger(SmallVectorImpl<TypeIndex> &SourceToDest)
: IndexMap(SourceToDest) { : IndexMap(SourceToDest) {
SourceToDest.clear(); SourceToDest.clear();
} }
static const TypeIndex Untranslated; static const TypeIndex Untranslated;
// Local hashing entry points
Error mergeTypesAndIds(MergingTypeTableBuilder &DestIds, Error mergeTypesAndIds(MergingTypeTableBuilder &DestIds,
MergingTypeTableBuilder &DestTypes, MergingTypeTableBuilder &DestTypes,
const CVTypeArray &IdsAndTypes); const CVTypeArray &IdsAndTypes);
Error mergeIdRecords(MergingTypeTableBuilder &Dest, Error mergeIdRecords(MergingTypeTableBuilder &Dest,
ArrayRef<TypeIndex> TypeSourceToDest, ArrayRef<TypeIndex> TypeSourceToDest,
const CVTypeArray &Ids); const CVTypeArray &Ids);
Error mergeTypeRecords(MergingTypeTableBuilder &Dest, Error mergeTypeRecords(MergingTypeTableBuilder &Dest,
const CVTypeArray &Types); const CVTypeArray &Types);
// Global hashing entry points
Error mergeTypesAndIds(GlobalTypeTableBuilder &DestIds,
GlobalTypeTableBuilder &DestTypes,
const CVTypeArray &IdsAndTypes,
ArrayRef<GloballyHashedType> Hashes);
Error mergeIdRecords(GlobalTypeTableBuilder &Dest,
ArrayRef<TypeIndex> TypeSourceToDest,
const CVTypeArray &Ids,
ArrayRef<GloballyHashedType> Hashes);
Error mergeTypeRecords(GlobalTypeTableBuilder &Dest, const CVTypeArray &Types,
ArrayRef<GloballyHashedType> Hashes);
private: private:
Error doit(const CVTypeArray &Types); Error doit(const CVTypeArray &Types);
Error remapAllTypes(const CVTypeArray &Types); Error remapAllTypes(const CVTypeArray &Types);
Error remapType(const CVType &Type); Error remapType(const CVType &Type);
void addMapping(TypeIndex Idx); void addMapping(TypeIndex Idx);
bool remapTypeIndex(TypeIndex &Idx); bool remapTypeIndex(TypeIndex &Idx);
bool remapItemIndex(TypeIndex &Idx); bool remapItemIndex(TypeIndex &Idx);
bool hasTypeStream() const {
return (UseGlobalHashes) ? (!!DestGlobalTypeStream) : (!!DestTypeStream);
}
bool hasIdStream() const {
return (UseGlobalHashes) ? (!!DestGlobalIdStream) : (!!DestIdStream);
}
ArrayRef<uint8_t> serializeRemapped(const RemappedType &Record); ArrayRef<uint8_t> serializeRemapped(const RemappedType &Record);
bool remapIndices(RemappedType &Record, ArrayRef<TiReference> Refs); bool remapIndices(RemappedType &Record, ArrayRef<TiReference> Refs);
bool remapIndex(TypeIndex &Idx, ArrayRef<TypeIndex> Map); bool remapIndex(TypeIndex &Idx, ArrayRef<TypeIndex> Map);
size_t slotForIndex(TypeIndex Idx) const { size_t slotForIndex(TypeIndex Idx) const {
assert(!Idx.isSimple() && "simple type indices have no slots"); assert(!Idx.isSimple() && "simple type indices have no slots");
return Idx.getIndex() - TypeIndex::FirstNonSimpleIndex; return Idx.getIndex() - TypeIndex::FirstNonSimpleIndex;
} }
Error errorCorruptRecord() const { Error errorCorruptRecord() const {
return llvm::make_error<CodeViewError>(cv_error_code::corrupt_record); return llvm::make_error<CodeViewError>(cv_error_code::corrupt_record);
} }
Optional<Error> LastError; Optional<Error> LastError;
bool UseGlobalHashes = false;
bool IsSecondPass = false; bool IsSecondPass = false;
unsigned NumBadIndices = 0; unsigned NumBadIndices = 0;
TypeIndex CurIndex{TypeIndex::FirstNonSimpleIndex}; TypeIndex CurIndex{TypeIndex::FirstNonSimpleIndex};
MergingTypeTableBuilder *DestIdStream = nullptr; MergingTypeTableBuilder *DestIdStream = nullptr;
MergingTypeTableBuilder *DestTypeStream = nullptr; MergingTypeTableBuilder *DestTypeStream = nullptr;
GlobalTypeTableBuilder *DestGlobalIdStream = nullptr;
GlobalTypeTableBuilder *DestGlobalTypeStream = nullptr;
ArrayRef<GloballyHashedType> GlobalHashes;
// If we're only mapping id records, this array contains the mapping for // If we're only mapping id records, this array contains the mapping for
// type records. // type records.
ArrayRef<TypeIndex> TypeLookup; ArrayRef<TypeIndex> TypeLookup;
/// Map from source type index to destination type index. Indexed by source /// Map from source type index to destination type index. Indexed by source
/// type index minus 0x1000. /// type index minus 0x1000.
SmallVectorImpl<TypeIndex> &IndexMap; SmallVectorImpl<TypeIndex> &IndexMap;
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} }
bool TypeStreamMerger::remapTypeIndex(TypeIndex &Idx) { bool TypeStreamMerger::remapTypeIndex(TypeIndex &Idx) {
// If we're mapping a pure index stream, then IndexMap only contains mappings // If we're mapping a pure index stream, then IndexMap only contains mappings
// from OldIdStream -> NewIdStream, in which case we will need to use the // from OldIdStream -> NewIdStream, in which case we will need to use the
// special mapping from OldTypeStream -> NewTypeStream which was computed // special mapping from OldTypeStream -> NewTypeStream which was computed
// externally. Regardless, we use this special map if and only if we are // externally. Regardless, we use this special map if and only if we are
// doing an id-only mapping. // doing an id-only mapping.
if (DestTypeStream == nullptr) if (!hasTypeStream())
return remapIndex(Idx, TypeLookup); return remapIndex(Idx, TypeLookup);
assert(TypeLookup.empty()); assert(TypeLookup.empty());
return remapIndex(Idx, IndexMap); return remapIndex(Idx, IndexMap);
} }
bool TypeStreamMerger::remapItemIndex(TypeIndex &Idx) { bool TypeStreamMerger::remapItemIndex(TypeIndex &Idx) {
assert(DestIdStream); assert(hasIdStream());
return remapIndex(Idx, IndexMap); return remapIndex(Idx, IndexMap);
} }
// Local hashing entry points
Error TypeStreamMerger::mergeTypeRecords(MergingTypeTableBuilder &Dest, Error TypeStreamMerger::mergeTypeRecords(MergingTypeTableBuilder &Dest,
const CVTypeArray &Types) { const CVTypeArray &Types) {
DestTypeStream = &Dest; DestTypeStream = &Dest;
UseGlobalHashes = false;
return doit(Types); return doit(Types);
} }
Error TypeStreamMerger::mergeIdRecords(MergingTypeTableBuilder &Dest, Error TypeStreamMerger::mergeIdRecords(MergingTypeTableBuilder &Dest,
ArrayRef<TypeIndex> TypeSourceToDest, ArrayRef<TypeIndex> TypeSourceToDest,
const CVTypeArray &Ids) { const CVTypeArray &Ids) {
DestIdStream = &Dest; DestIdStream = &Dest;
TypeLookup = TypeSourceToDest; TypeLookup = TypeSourceToDest;
UseGlobalHashes = false;
return doit(Ids); return doit(Ids);
} }
Error TypeStreamMerger::mergeTypesAndIds(MergingTypeTableBuilder &DestIds, Error TypeStreamMerger::mergeTypesAndIds(MergingTypeTableBuilder &DestIds,
MergingTypeTableBuilder &DestTypes, MergingTypeTableBuilder &DestTypes,
const CVTypeArray &IdsAndTypes) { const CVTypeArray &IdsAndTypes) {
DestIdStream = &DestIds; DestIdStream = &DestIds;
DestTypeStream = &DestTypes; DestTypeStream = &DestTypes;
UseGlobalHashes = false;
return doit(IdsAndTypes);
}
// Global hashing entry points
Error TypeStreamMerger::mergeTypeRecords(GlobalTypeTableBuilder &Dest,
const CVTypeArray &Types,
ArrayRef<GloballyHashedType> Hashes) {
DestGlobalTypeStream = &Dest;
UseGlobalHashes = true;
GlobalHashes = Hashes;
return doit(Types);
}
Error TypeStreamMerger::mergeIdRecords(GlobalTypeTableBuilder &Dest,
ArrayRef<TypeIndex> TypeSourceToDest,
const CVTypeArray &Ids,
ArrayRef<GloballyHashedType> Hashes) {
DestGlobalIdStream = &Dest;
TypeLookup = TypeSourceToDest;
UseGlobalHashes = true;
GlobalHashes = Hashes;
return doit(Ids);
}
Error TypeStreamMerger::mergeTypesAndIds(GlobalTypeTableBuilder &DestIds,
GlobalTypeTableBuilder &DestTypes,
const CVTypeArray &IdsAndTypes,
ArrayRef<GloballyHashedType> Hashes) {
DestGlobalIdStream = &DestIds;
DestGlobalTypeStream = &DestTypes;
UseGlobalHashes = true;
GlobalHashes = Hashes;
return doit(IdsAndTypes); return doit(IdsAndTypes);
} }
Error TypeStreamMerger::doit(const CVTypeArray &Types) { Error TypeStreamMerger::doit(const CVTypeArray &Types) {
if (auto EC = remapAllTypes(Types)) if (auto EC = remapAllTypes(Types))
return EC; return EC;
// If we found bad indices but no other errors, try doing another pass and see // If we found bad indices but no other errors, try doing another pass and see
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Error TypeStreamMerger::remapAllTypes(const CVTypeArray &Types) { Error TypeStreamMerger::remapAllTypes(const CVTypeArray &Types) {
for (const CVType &Type : Types) for (const CVType &Type : Types)
if (auto EC = remapType(Type)) if (auto EC = remapType(Type))
return EC; return EC;
return Error::success(); return Error::success();
} }
Error TypeStreamMerger::remapType(const CVType &Type) { Error TypeStreamMerger::remapType(const CVType &Type) {
MergingTypeTableBuilder &Dest = auto DoSerialize = [this, Type]() -> ArrayRef<uint8_t> {
isIdRecord(Type.kind()) ? *DestIdStream : *DestTypeStream;
RemappedType R(Type); RemappedType R(Type);
SmallVector<TiReference, 32> Refs; SmallVector<TiReference, 32> Refs;
discoverTypeIndices(Type.RecordData, Refs); discoverTypeIndices(Type.RecordData, Refs);
bool MappedAllIndices = remapIndices(R, Refs); if (!remapIndices(R, Refs))
ArrayRef<uint8_t> Data = serializeRemapped(R); return {};
return serializeRemapped(R);
};
TypeIndex DestIdx = Untranslated; TypeIndex DestIdx = Untranslated;
if (MappedAllIndices) if (UseGlobalHashes) {
GlobalTypeTableBuilder &Dest =
isIdRecord(Type.kind()) ? *DestGlobalIdStream : *DestGlobalTypeStream;
GloballyHashedType H = GlobalHashes[CurIndex.toArrayIndex()];
DestIdx = Dest.insertRecordAs(H, DoSerialize);
} else {
MergingTypeTableBuilder &Dest =
isIdRecord(Type.kind()) ? *DestIdStream : *DestTypeStream;
auto Data = DoSerialize();
if (!Data.empty())
DestIdx = Dest.insertRecordBytes(Data); DestIdx = Dest.insertRecordBytes(Data);
}
addMapping(DestIdx); addMapping(DestIdx);
++CurIndex; ++CurIndex;
assert((IsSecondPass || IndexMap.size() == slotForIndex(CurIndex)) && assert((IsSecondPass || IndexMap.size() == slotForIndex(CurIndex)) &&
"visitKnownRecord should add one index map entry"); "visitKnownRecord should add one index map entry");
return Error::success(); return Error::success();
} }
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} }
Error llvm::codeview::mergeTypeAndIdRecords( Error llvm::codeview::mergeTypeAndIdRecords(
MergingTypeTableBuilder &DestIds, MergingTypeTableBuilder &DestTypes, MergingTypeTableBuilder &DestIds, MergingTypeTableBuilder &DestTypes,
SmallVectorImpl<TypeIndex> &SourceToDest, const CVTypeArray &IdsAndTypes) { SmallVectorImpl<TypeIndex> &SourceToDest, const CVTypeArray &IdsAndTypes) {
TypeStreamMerger M(SourceToDest); TypeStreamMerger M(SourceToDest);
return M.mergeTypesAndIds(DestIds, DestTypes, IdsAndTypes); return M.mergeTypesAndIds(DestIds, DestTypes, IdsAndTypes);
} }
Error llvm::codeview::mergeTypeAndIdRecords(
GlobalTypeTableBuilder &DestIds, GlobalTypeTableBuilder &DestTypes,
SmallVectorImpl<TypeIndex> &SourceToDest, const CVTypeArray &IdsAndTypes,
ArrayRef<GloballyHashedType> Hashes) {
TypeStreamMerger M(SourceToDest);
return M.mergeTypesAndIds(DestIds, DestTypes, IdsAndTypes, Hashes);
}
Error llvm::codeview::mergeTypeRecords(GlobalTypeTableBuilder &Dest,
SmallVectorImpl<TypeIndex> &SourceToDest,
const CVTypeArray &Types,
ArrayRef<GloballyHashedType> Hashes) {
TypeStreamMerger M(SourceToDest);
return M.mergeTypeRecords(Dest, Types, Hashes);
}
Error llvm::codeview::mergeIdRecords(GlobalTypeTableBuilder &Dest,
ArrayRef<TypeIndex> Types,
SmallVectorImpl<TypeIndex> &SourceToDest,
const CVTypeArray &Ids,
ArrayRef<GloballyHashedType> Hashes) {
TypeStreamMerger M(SourceToDest);
return M.mergeIdRecords(Dest, Types, Ids, Hashes);
}