X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FMC%2FMCContext.cpp;h=2160b4ee80d65fec18bda809d72a824b7c860940;hb=d3ca239fe8ccc6b1188d61130b887ebdc94f8059;hp=4bb39d3f883e70488d5558d1a806a19b9a225593;hpb=f7e0685b9ae2114fae77d0acc0d6fac92c8d9ee4;p=oota-llvm.git diff --git a/lib/MC/MCContext.cpp b/lib/MC/MCContext.cpp index 4bb39d3f883..2160b4ee80d 100644 --- a/lib/MC/MCContext.cpp +++ b/lib/MC/MCContext.cpp @@ -20,7 +20,10 @@ #include "llvm/MC/MCSectionELF.h" #include "llvm/MC/MCSectionMachO.h" #include "llvm/MC/MCStreamer.h" +#include "llvm/MC/MCSymbolCOFF.h" #include "llvm/MC/MCSymbolELF.h" +#include "llvm/MC/MCSymbolMachO.h" +#include "llvm/Support/COFF.h" #include "llvm/Support/ELF.h" #include "llvm/Support/ErrorHandling.h" #include "llvm/Support/FileSystem.h" @@ -71,15 +74,13 @@ MCContext::~MCContext() { void MCContext::reset() { // Call the destructors so the fragments are freed - for (auto &I : ELFUniquingMap) - I.second->~MCSectionELF(); - for (auto &I : COFFUniquingMap) - I.second->~MCSectionCOFF(); - for (auto &I : MachOUniquingMap) - I.second->~MCSectionMachO(); + COFFAllocator.DestroyAll(); + ELFAllocator.DestroyAll(); + MachOAllocator.DestroyAll(); UsedNames.clear(); Symbols.clear(); + SectionSymbols.clear(); Allocator.Reset(); Instances.clear(); CompilationDir.clear(); @@ -114,7 +115,7 @@ MCSymbol *MCContext::getOrCreateSymbol(const Twine &Name) { MCSymbol *&Sym = Symbols[NameRef]; if (!Sym) - Sym = CreateSymbol(NameRef, false); + Sym = createSymbol(NameRef, false, false); return Sym; } @@ -133,7 +134,7 @@ MCSymbolELF *MCContext::getOrCreateSectionSymbol(const MCSectionELF &Section) { } auto NameIter = UsedNames.insert(std::make_pair(Name, true)).first; - Sym = new (*this) MCSymbolELF(&*NameIter, /*isTemporary*/ false); + Sym = new (&*NameIter, *this) MCSymbolELF(&*NameIter, /*isTemporary*/ false); if (!OldSym) OldSym = Sym; @@ -159,21 +160,31 @@ MCSymbol *MCContext::getOrCreateLSDASymbol(StringRef FuncName) { MCSymbol *MCContext::createSymbolImpl(const StringMapEntry *Name, bool IsTemporary) { - bool IsELF = MOFI && MOFI->getObjectFileType() == MCObjectFileInfo::IsELF; - if (IsELF) - return new (*this) MCSymbolELF(Name, IsTemporary); - return new (*this) MCSymbol(false, Name, IsTemporary); + if (MOFI) { + switch (MOFI->getObjectFileType()) { + case MCObjectFileInfo::IsCOFF: + return new (Name, *this) MCSymbolCOFF(Name, IsTemporary); + case MCObjectFileInfo::IsELF: + return new (Name, *this) MCSymbolELF(Name, IsTemporary); + case MCObjectFileInfo::IsMachO: + return new (Name, *this) MCSymbolMachO(Name, IsTemporary); + } + } + return new (Name, *this) MCSymbol(MCSymbol::SymbolKindUnset, Name, + IsTemporary); } -MCSymbol *MCContext::CreateSymbol(StringRef Name, bool AlwaysAddSuffix) { - // Determine whether this is an assembler temporary or normal label, if used. - bool IsTemporary = false; - if (AllowTemporaryLabels) - IsTemporary = Name.startswith(MAI->getPrivateGlobalPrefix()); - - if (IsTemporary && AlwaysAddSuffix && !UseNamesOnTempLabels) +MCSymbol *MCContext::createSymbol(StringRef Name, bool AlwaysAddSuffix, + bool CanBeUnnamed) { + if (CanBeUnnamed && !UseNamesOnTempLabels) return createSymbolImpl(nullptr, true); + // Determine whether this is an user writter assembler temporary or normal + // label, if used. + bool IsTemporary = CanBeUnnamed; + if (AllowTemporaryLabels && !IsTemporary) + IsTemporary = Name.startswith(MAI->getPrivateGlobalPrefix()); + SmallString<128> NewName = Name; bool AddSuffix = AlwaysAddSuffix; unsigned &NextUniqueID = NextID[Name]; @@ -194,20 +205,21 @@ MCSymbol *MCContext::CreateSymbol(StringRef Name, bool AlwaysAddSuffix) { llvm_unreachable("Infinite loop"); } -MCSymbol *MCContext::createTempSymbol(const Twine &Name, bool AlwaysAddSuffix) { +MCSymbol *MCContext::createTempSymbol(const Twine &Name, bool AlwaysAddSuffix, + bool CanBeUnnamed) { SmallString<128> NameSV; raw_svector_ostream(NameSV) << MAI->getPrivateGlobalPrefix() << Name; - return CreateSymbol(NameSV, AlwaysAddSuffix); + return createSymbol(NameSV, AlwaysAddSuffix, CanBeUnnamed); } MCSymbol *MCContext::createLinkerPrivateTempSymbol() { SmallString<128> NameSV; raw_svector_ostream(NameSV) << MAI->getLinkerPrivateGlobalPrefix() << "tmp"; - return CreateSymbol(NameSV, true); + return createSymbol(NameSV, true, false); } -MCSymbol *MCContext::createTempSymbol() { - return createTempSymbol("tmp", true); +MCSymbol *MCContext::createTempSymbol(bool CanBeUnnamed) { + return createTempSymbol("tmp", true, CanBeUnnamed); } unsigned MCContext::NextInstance(unsigned LocalLabelVal) { @@ -228,7 +240,7 @@ MCSymbol *MCContext::getOrCreateDirectionalLocalSymbol(unsigned LocalLabelVal, unsigned Instance) { MCSymbol *&Sym = LocalSymbols[std::make_pair(LocalLabelVal, Instance)]; if (!Sym) - Sym = createTempSymbol(); + Sym = createTempSymbol(false); return Sym; } @@ -280,8 +292,8 @@ MCSectionMachO *MCContext::getMachOSection(StringRef Segment, StringRef Section, Begin = createTempSymbol(BeginSymName, false); // Otherwise, return a new section. - return Entry = new (*this) MCSectionMachO(Segment, Section, TypeAndAttributes, - Reserved2, Kind, Begin); + return Entry = new (MachOAllocator.Allocate()) MCSectionMachO( + Segment, Section, TypeAndAttributes, Reserved2, Kind, Begin); } void MCContext::renameELFSection(MCSectionELF *Section, StringRef Name) { @@ -302,13 +314,13 @@ void MCContext::renameELFSection(MCSectionELF *Section, StringRef Name) { MCSectionELF *MCContext::createELFRelSection(StringRef Name, unsigned Type, unsigned Flags, unsigned EntrySize, - const MCSymbol *Group, + const MCSymbolELF *Group, const MCSectionELF *Associated) { StringMap::iterator I; bool Inserted; std::tie(I, Inserted) = ELFRelSecNames.insert(std::make_pair(Name, true)); - return new (*this) + return new (ELFAllocator.Allocate()) MCSectionELF(I->getKey(), Type, Flags, SectionKind::getReadOnly(), EntrySize, Group, true, nullptr, Associated); } @@ -317,9 +329,9 @@ MCSectionELF *MCContext::getELFSection(StringRef Section, unsigned Type, unsigned Flags, unsigned EntrySize, StringRef Group, unsigned UniqueID, const char *BeginSymName) { - MCSymbol *GroupSym = nullptr; + MCSymbolELF *GroupSym = nullptr; if (!Group.empty()) - GroupSym = getOrCreateSymbol(Group); + GroupSym = cast(getOrCreateSymbol(Group)); return getELFSection(Section, Type, Flags, EntrySize, GroupSym, UniqueID, BeginSymName, nullptr); @@ -327,7 +339,7 @@ MCSectionELF *MCContext::getELFSection(StringRef Section, unsigned Type, MCSectionELF *MCContext::getELFSection(StringRef Section, unsigned Type, unsigned Flags, unsigned EntrySize, - const MCSymbol *GroupSym, + const MCSymbolELF *GroupSym, unsigned UniqueID, const char *BeginSymName, const MCSectionELF *Associated) { @@ -353,15 +365,15 @@ MCSectionELF *MCContext::getELFSection(StringRef Section, unsigned Type, if (BeginSymName) Begin = createTempSymbol(BeginSymName, false); - MCSectionELF *Result = - new (*this) MCSectionELF(CachedName, Type, Flags, Kind, EntrySize, - GroupSym, UniqueID, Begin, Associated); + MCSectionELF *Result = new (ELFAllocator.Allocate()) + MCSectionELF(CachedName, Type, Flags, Kind, EntrySize, GroupSym, UniqueID, + Begin, Associated); Entry.second = Result; return Result; } -MCSectionELF *MCContext::createELFGroupSection(const MCSymbol *Group) { - MCSectionELF *Result = new (*this) +MCSectionELF *MCContext::createELFGroupSection(const MCSymbolELF *Group) { + MCSectionELF *Result = new (ELFAllocator.Allocate()) MCSectionELF(".group", ELF::SHT_GROUP, 0, SectionKind::getReadOnly(), 4, Group, ~0, nullptr, nullptr); return Result; @@ -390,7 +402,7 @@ MCSectionCOFF *MCContext::getCOFFSection(StringRef Section, Begin = createTempSymbol(BeginSymName, false); StringRef CachedName = Iter->first.SectionName; - MCSectionCOFF *Result = new (*this) MCSectionCOFF( + MCSectionCOFF *Result = new (COFFAllocator.Allocate()) MCSectionCOFF( CachedName, Characteristics, COMDATSymbol, Selection, Kind, Begin); Iter->second = Result;