X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FMC%2FMCContext.cpp;h=b5ad518d0330e89f6846cee1fe0dcffc6469836d;hb=74012f5a19492f002994872f6ed1cd96383b620e;hp=0a453cdb46b71bed4555c22d513bb5fd08c14693;hpb=be38d7cb8ca1faba6d909ced97c079906e9ce277;p=oota-llvm.git diff --git a/lib/MC/MCContext.cpp b/lib/MC/MCContext.cpp index 0a453cdb46b..b5ad518d033 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/MCSymbol.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" @@ -39,7 +42,7 @@ MCContext::MCContext(const MCAsmInfo *mai, const MCRegisterInfo *mri, CurrentDwarfLoc(0, 0, 0, DWARF2_FLAG_IS_STMT, 0, 0), DwarfLocSeen(false), GenDwarfForAssembly(false), GenDwarfFileNumber(0), DwarfVersion(4), AllowTemporaryLabels(true), DwarfCompileUnitID(0), - AutoReset(DoAutoReset) { + AutoReset(DoAutoReset), HadError(false) { std::error_code EC = llvm::sys::fs::current_path(CompilationDir); if (EC) @@ -55,22 +58,11 @@ MCContext::MCContext(const MCAsmInfo *mai, const MCRegisterInfo *mri, } MCContext::~MCContext() { - // 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(); - if (AutoReset) reset(); // NOTE: The symbols are all allocated out of a bump pointer allocator, // we don't need to free them here. - - // If the stream for the .secure_log_unique directive was created free it. - delete (raw_ostream *)SecureLog; } //===----------------------------------------------------------------------===// @@ -78,8 +70,15 @@ MCContext::~MCContext() { //===----------------------------------------------------------------------===// void MCContext::reset() { + // Call the destructors so the fragments are freed + COFFAllocator.DestroyAll(); + ELFAllocator.DestroyAll(); + MachOAllocator.DestroyAll(); + + MCSubtargetAllocator.DestroyAll(); UsedNames.clear(); Symbols.clear(); + SectionSymbols.clear(); Allocator.Reset(); Instances.clear(); CompilationDir.clear(); @@ -100,6 +99,8 @@ void MCContext::reset() { DwarfLocSeen = false; GenDwarfForAssembly = false; GenDwarfFileNumber = 0; + + HadError = false; } //===----------------------------------------------------------------------===// @@ -114,13 +115,13 @@ MCSymbol *MCContext::getOrCreateSymbol(const Twine &Name) { MCSymbol *&Sym = Symbols[NameRef]; if (!Sym) - Sym = CreateSymbol(NameRef, false); + Sym = createSymbol(NameRef, false, false); return Sym; } -MCSymbol *MCContext::getOrCreateSectionSymbol(const MCSectionELF &Section) { - MCSymbol *&Sym = SectionSymbols[&Section]; +MCSymbolELF *MCContext::getOrCreateSectionSymbol(const MCSectionELF &Section) { + MCSymbolELF *&Sym = SectionSymbols[&Section]; if (Sym) return Sym; @@ -128,12 +129,12 @@ MCSymbol *MCContext::getOrCreateSectionSymbol(const MCSectionELF &Section) { MCSymbol *&OldSym = Symbols[Name]; if (OldSym && OldSym->isUndefined()) { - Sym = OldSym; - return OldSym; + Sym = cast(OldSym); + return Sym; } auto NameIter = UsedNames.insert(std::make_pair(Name, true)).first; - Sym = new (*this) MCSymbol(&*NameIter, /*isTemporary*/ false); + Sym = new (&*NameIter, *this) MCSymbolELF(&*NameIter, /*isTemporary*/ false); if (!OldSym) OldSym = Sym; @@ -157,14 +158,32 @@ MCSymbol *MCContext::getOrCreateLSDASymbol(StringRef FuncName) { FuncName); } -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()); +MCSymbol *MCContext::createSymbolImpl(const StringMapEntry *Name, + bool 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); +} - if (IsTemporary && AlwaysAddSuffix && !UseNamesOnTempLabels) - return new (*this) MCSymbol(nullptr, true); +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; @@ -178,8 +197,7 @@ MCSymbol *MCContext::CreateSymbol(StringRef Name, bool AlwaysAddSuffix) { if (NameEntry.second) { // Ok, we found a name. Have the MCSymbol object itself refer to the copy // of the string that is embedded in the UsedNames entry. - MCSymbol *Result = new (*this) MCSymbol(&*NameEntry.first, IsTemporary); - return Result; + return createSymbolImpl(&*NameEntry.first, IsTemporary); } assert(IsTemporary && "Cannot rename non-temporary symbols"); AddSuffix = true; @@ -187,20 +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) { @@ -221,7 +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; } @@ -273,8 +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) { @@ -295,13 +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); } @@ -310,9 +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); @@ -320,7 +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) { @@ -346,15 +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; @@ -383,7 +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; @@ -420,6 +439,10 @@ MCSectionCOFF *MCContext::getAssociativeCOFFSection(MCSectionCOFF *Sec, COFF::IMAGE_COMDAT_SELECT_ASSOCIATIVE); } +MCSubtargetInfo &MCContext::getSubtargetCopy(const MCSubtargetInfo &STI) { + return *new (MCSubtargetAllocator.Allocate()) MCSubtargetInfo(STI); +} + //===----------------------------------------------------------------------===// // Dwarf Management //===----------------------------------------------------------------------===// @@ -447,23 +470,28 @@ bool MCContext::isValidDwarfFileNumber(unsigned FileNumber, unsigned CUID) { /// Remove empty sections from SectionStartEndSyms, to avoid generating /// useless debug info for them. void MCContext::finalizeDwarfSections(MCStreamer &MCOS) { - std::vector Keep; - for (MCSection *Sec : SectionsForRanges) { - if (MCOS.mayHaveInstructions(*Sec)) - Keep.push_back(Sec); - } - SectionsForRanges.clear(); - SectionsForRanges.insert(Keep.begin(), Keep.end()); + SectionsForRanges.remove_if( + [&](MCSection *Sec) { return !MCOS.mayHaveInstructions(*Sec); }); } -void MCContext::reportFatalError(SMLoc Loc, const Twine &Msg) const { - // If we have a source manager and a location, use it. Otherwise just - // use the generic report_fatal_error(). - if (!SrcMgr || Loc == SMLoc()) +//===----------------------------------------------------------------------===// +// Error Reporting +//===----------------------------------------------------------------------===// + +void MCContext::reportError(SMLoc Loc, const Twine &Msg) { + HadError = true; + + // If we have a source manager use it. Otherwise just use the generic + // report_fatal_error(). + if (!SrcMgr) report_fatal_error(Msg, false); // Use the source manager to print the message. SrcMgr->PrintMessage(Loc, SourceMgr::DK_Error, Msg); +} + +void MCContext::reportFatalError(SMLoc Loc, const Twine &Msg) { + reportError(Loc, Msg); // If we reached here, we are failing ungracefully. Run the interrupt handlers // to make sure any special cleanups get done, in particular that we remove