X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FMC%2FMCContext.cpp;h=b5ad518d0330e89f6846cee1fe0dcffc6469836d;hb=62663ee66ebb56c586e55b7342546f3bd74c279f;hp=4ec621fea0c96b10f9d504723154b5c724d6a380;hpb=5c792faa0e5560bc148c973f3df658eb3bb2061e;p=oota-llvm.git diff --git a/lib/MC/MCContext.cpp b/lib/MC/MCContext.cpp index 4ec621fea0c..b5ad518d033 100644 --- a/lib/MC/MCContext.cpp +++ b/lib/MC/MCContext.cpp @@ -10,6 +10,7 @@ #include "llvm/MC/MCContext.h" #include "llvm/ADT/SmallString.h" #include "llvm/ADT/Twine.h" +#include "llvm/MC/MCAssembler.h" #include "llvm/MC/MCAsmInfo.h" #include "llvm/MC/MCDwarf.h" #include "llvm/MC/MCLabel.h" @@ -18,7 +19,11 @@ #include "llvm/MC/MCSectionCOFF.h" #include "llvm/MC/MCSectionELF.h" #include "llvm/MC/MCSectionMachO.h" -#include "llvm/MC/MCSymbol.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" @@ -28,19 +33,18 @@ #include using namespace llvm; -using std::error_code; MCContext::MCContext(const MCAsmInfo *mai, const MCRegisterInfo *mri, const MCObjectFileInfo *mofi, const SourceMgr *mgr, bool DoAutoReset) : SrcMgr(mgr), MAI(mai), MRI(mri), MOFI(mofi), Allocator(), - Symbols(Allocator), UsedNames(Allocator), NextUniqueID(0), + Symbols(Allocator), UsedNames(Allocator), 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) { - error_code EC = llvm::sys::fs::current_path(CompilationDir); + std::error_code EC = llvm::sys::fs::current_path(CompilationDir); if (EC) CompilationDir.clear(); @@ -48,20 +52,17 @@ MCContext::MCContext(const MCAsmInfo *mai, const MCRegisterInfo *mri, SecureLog = nullptr; SecureLogUsed = false; - if (SrcMgr && SrcMgr->getNumBuffers() > 0) - MainFileName = SrcMgr->getMemoryBuffer(0)->getBufferIdentifier(); + if (SrcMgr && SrcMgr->getNumBuffers()) + MainFileName = + SrcMgr->getMemoryBuffer(SrcMgr->getMainFileID())->getBufferIdentifier(); } MCContext::~MCContext() { - 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; } //===----------------------------------------------------------------------===// @@ -69,89 +70,156 @@ 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(); + MainFileName.clear(); MCDwarfLineTablesCUMap.clear(); + SectionsForRanges.clear(); MCGenDwarfLabelEntries.clear(); DwarfDebugFlags = StringRef(); DwarfCompileUnitID = 0; - CurrentDwarfLoc = MCDwarfLoc(0,0,0,DWARF2_FLAG_IS_STMT,0,0); + CurrentDwarfLoc = MCDwarfLoc(0, 0, 0, DWARF2_FLAG_IS_STMT, 0, 0); MachOUniquingMap.clear(); ELFUniquingMap.clear(); COFFUniquingMap.clear(); - NextUniqueID = 0; + NextID.clear(); AllowTemporaryLabels = true; DwarfLocSeen = false; GenDwarfForAssembly = false; GenDwarfFileNumber = 0; + + HadError = false; } //===----------------------------------------------------------------------===// // Symbol Manipulation //===----------------------------------------------------------------------===// -MCSymbol *MCContext::GetOrCreateSymbol(StringRef Name) { - assert(!Name.empty() && "Normal symbols cannot be unnamed!"); +MCSymbol *MCContext::getOrCreateSymbol(const Twine &Name) { + SmallString<128> NameSV; + StringRef NameRef = Name.toStringRef(NameSV); + + assert(!NameRef.empty() && "Normal symbols cannot be unnamed!"); - // Do the lookup and get the entire StringMapEntry. We want access to the - // key if we are creating the entry. - StringMapEntry &Entry = Symbols.GetOrCreateValue(Name); - MCSymbol *Sym = Entry.getValue(); + MCSymbol *&Sym = Symbols[NameRef]; + if (!Sym) + Sym = createSymbol(NameRef, false, false); + return Sym; +} + +MCSymbolELF *MCContext::getOrCreateSectionSymbol(const MCSectionELF &Section) { + MCSymbolELF *&Sym = SectionSymbols[&Section]; if (Sym) return Sym; - Sym = CreateSymbol(Name); - Entry.setValue(Sym); + StringRef Name = Section.getSectionName(); + + MCSymbol *&OldSym = Symbols[Name]; + if (OldSym && OldSym->isUndefined()) { + Sym = cast(OldSym); + return Sym; + } + + auto NameIter = UsedNames.insert(std::make_pair(Name, true)).first; + Sym = new (&*NameIter, *this) MCSymbolELF(&*NameIter, /*isTemporary*/ false); + + if (!OldSym) + OldSym = Sym; + return Sym; } -MCSymbol *MCContext::CreateSymbol(StringRef Name) { - // Determine whether this is an assembler temporary or normal label, if used. - bool isTemporary = false; - if (AllowTemporaryLabels) - isTemporary = Name.startswith(MAI->getPrivateGlobalPrefix()); +MCSymbol *MCContext::getOrCreateFrameAllocSymbol(StringRef FuncName, + unsigned Idx) { + return getOrCreateSymbol(Twine(MAI->getPrivateGlobalPrefix()) + FuncName + + "$frame_escape_" + Twine(Idx)); +} + +MCSymbol *MCContext::getOrCreateParentFrameOffsetSymbol(StringRef FuncName) { + return getOrCreateSymbol(Twine(MAI->getPrivateGlobalPrefix()) + FuncName + + "$parent_frame_offset"); +} + +MCSymbol *MCContext::getOrCreateLSDASymbol(StringRef FuncName) { + return getOrCreateSymbol(Twine(MAI->getPrivateGlobalPrefix()) + "__ehtable$" + + FuncName); +} + +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); +} - StringMapEntry *NameEntry = &UsedNames.GetOrCreateValue(Name); - if (NameEntry->getValue()) { - assert(isTemporary && "Cannot rename non-temporary symbols"); - SmallString<128> NewName = Name; - do { +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]; + for (;;) { + if (AddSuffix) { NewName.resize(Name.size()); raw_svector_ostream(NewName) << NextUniqueID++; - NameEntry = &UsedNames.GetOrCreateValue(NewName); - } while (NameEntry->getValue()); + } + auto NameEntry = UsedNames.insert(std::make_pair(NewName, true)); + 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. + return createSymbolImpl(&*NameEntry.first, IsTemporary); + } + assert(IsTemporary && "Cannot rename non-temporary symbols"); + AddSuffix = true; } - NameEntry->setValue(true); - - // Ok, the entry doesn't already exist. 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->getKey(), isTemporary); - - return Result; + llvm_unreachable("Infinite loop"); } -MCSymbol *MCContext::GetOrCreateSymbol(const Twine &Name) { +MCSymbol *MCContext::createTempSymbol(const Twine &Name, bool AlwaysAddSuffix, + bool CanBeUnnamed) { SmallString<128> NameSV; - return GetOrCreateSymbol(Name.toStringRef(NameSV)); + raw_svector_ostream(NameSV) << MAI->getPrivateGlobalPrefix() << Name; + return createSymbol(NameSV, AlwaysAddSuffix, CanBeUnnamed); } -MCSymbol *MCContext::CreateLinkerPrivateTempSymbol() { +MCSymbol *MCContext::createLinkerPrivateTempSymbol() { SmallString<128> NameSV; - raw_svector_ostream(NameSV) - << MAI->getLinkerPrivateGlobalPrefix() << "tmp" << NextUniqueID++; - return CreateSymbol(NameSV); + raw_svector_ostream(NameSV) << MAI->getLinkerPrivateGlobalPrefix() << "tmp"; + return createSymbol(NameSV, true, false); } -MCSymbol *MCContext::CreateTempSymbol() { - SmallString<128> NameSV; - raw_svector_ostream(NameSV) - << MAI->getPrivateGlobalPrefix() << "tmp" << NextUniqueID++; - return CreateSymbol(NameSV); +MCSymbol *MCContext::createTempSymbol(bool CanBeUnnamed) { + return createTempSymbol("tmp", true, CanBeUnnamed); } unsigned MCContext::NextInstance(unsigned LocalLabelVal) { @@ -172,16 +240,16 @@ MCSymbol *MCContext::getOrCreateDirectionalLocalSymbol(unsigned LocalLabelVal, unsigned Instance) { MCSymbol *&Sym = LocalSymbols[std::make_pair(LocalLabelVal, Instance)]; if (!Sym) - Sym = CreateTempSymbol(); + Sym = createTempSymbol(false); return Sym; } -MCSymbol *MCContext::CreateDirectionalLocalSymbol(unsigned LocalLabelVal) { +MCSymbol *MCContext::createDirectionalLocalSymbol(unsigned LocalLabelVal) { unsigned Instance = NextInstance(LocalLabelVal); return getOrCreateDirectionalLocalSymbol(LocalLabelVal, Instance); } -MCSymbol *MCContext::GetDirectionalLocalSymbol(unsigned LocalLabelVal, +MCSymbol *MCContext::getDirectionalLocalSymbol(unsigned LocalLabelVal, bool Before) { unsigned Instance = GetInstance(LocalLabelVal); if (!Before) @@ -189,24 +257,20 @@ MCSymbol *MCContext::GetDirectionalLocalSymbol(unsigned LocalLabelVal, return getOrCreateDirectionalLocalSymbol(LocalLabelVal, Instance); } -MCSymbol *MCContext::LookupSymbol(StringRef Name) const { - return Symbols.lookup(Name); -} - -MCSymbol *MCContext::LookupSymbol(const Twine &Name) const { +MCSymbol *MCContext::lookupSymbol(const Twine &Name) const { SmallString<128> NameSV; - Name.toVector(NameSV); - return LookupSymbol(NameSV.str()); + StringRef NameRef = Name.toStringRef(NameSV); + return Symbols.lookup(NameRef); } //===----------------------------------------------------------------------===// // Section Management //===----------------------------------------------------------------------===// -const MCSectionMachO *MCContext:: -getMachOSection(StringRef Segment, StringRef Section, - unsigned TypeAndAttributes, - unsigned Reserved2, SectionKind Kind) { +MCSectionMachO *MCContext::getMachOSection(StringRef Segment, StringRef Section, + unsigned TypeAndAttributes, + unsigned Reserved2, SectionKind Kind, + const char *BeginSymName) { // We unique sections by their segment/section pair. The returned section // may not have the same flags as the requested section, if so this should be @@ -219,113 +283,175 @@ getMachOSection(StringRef Segment, StringRef Section, Name += Section; // Do the lookup, if we have a hit, return it. - const MCSectionMachO *&Entry = MachOUniquingMap[Name.str()]; - if (Entry) return Entry; + MCSectionMachO *&Entry = MachOUniquingMap[Name]; + if (Entry) + return Entry; - // Otherwise, return a new section. - return Entry = new (*this) MCSectionMachO(Segment, Section, TypeAndAttributes, - Reserved2, Kind); -} + MCSymbol *Begin = nullptr; + if (BeginSymName) + Begin = createTempSymbol(BeginSymName, false); -const MCSectionELF *MCContext:: -getELFSection(StringRef Section, unsigned Type, unsigned Flags, - SectionKind Kind) { - return getELFSection(Section, Type, Flags, Kind, 0, ""); + // Otherwise, return a new section. + return Entry = new (MachOAllocator.Allocate()) MCSectionMachO( + Segment, Section, TypeAndAttributes, Reserved2, Kind, Begin); } -void MCContext::renameELFSection(const MCSectionELF *Section, StringRef Name) { +void MCContext::renameELFSection(MCSectionELF *Section, StringRef Name) { StringRef GroupName; if (const MCSymbol *Group = Section->getGroup()) GroupName = Group->getName(); - ELFUniquingMap.erase(SectionGroupPair(Section->getSectionName(), GroupName)); - auto I = - ELFUniquingMap.insert(std::make_pair(SectionGroupPair(Name, GroupName), - Section)).first; - StringRef CachedName = I->first.first; - const_cast(Section)->setSectionName(CachedName); + unsigned UniqueID = Section->getUniqueID(); + ELFUniquingMap.erase( + ELFSectionKey{Section->getSectionName(), GroupName, UniqueID}); + auto I = ELFUniquingMap.insert(std::make_pair( + ELFSectionKey{Name, GroupName, UniqueID}, + Section)) + .first; + StringRef CachedName = I->first.SectionName; + const_cast(Section)->setSectionName(CachedName); } -const MCSectionELF *MCContext:: -getELFSection(StringRef Section, unsigned Type, unsigned Flags, - SectionKind Kind, unsigned EntrySize, StringRef Group) { +MCSectionELF *MCContext::createELFRelSection(StringRef Name, unsigned Type, + unsigned Flags, unsigned EntrySize, + const MCSymbolELF *Group, + const MCSectionELF *Associated) { + StringMap::iterator I; + bool Inserted; + std::tie(I, Inserted) = ELFRelSecNames.insert(std::make_pair(Name, true)); + + return new (ELFAllocator.Allocate()) + MCSectionELF(I->getKey(), Type, Flags, SectionKind::getReadOnly(), + EntrySize, Group, true, nullptr, Associated); +} + +MCSectionELF *MCContext::getELFSection(StringRef Section, unsigned Type, + unsigned Flags, unsigned EntrySize, + StringRef Group, unsigned UniqueID, + const char *BeginSymName) { + MCSymbolELF *GroupSym = nullptr; + if (!Group.empty()) + GroupSym = cast(getOrCreateSymbol(Group)); + + return getELFSection(Section, Type, Flags, EntrySize, GroupSym, UniqueID, + BeginSymName, nullptr); +} + +MCSectionELF *MCContext::getELFSection(StringRef Section, unsigned Type, + unsigned Flags, unsigned EntrySize, + const MCSymbolELF *GroupSym, + unsigned UniqueID, + const char *BeginSymName, + const MCSectionELF *Associated) { + StringRef Group = ""; + if (GroupSym) + Group = GroupSym->getName(); // Do the lookup, if we have a hit, return it. auto IterBool = ELFUniquingMap.insert( - std::make_pair(SectionGroupPair(Section, Group), nullptr)); + std::make_pair(ELFSectionKey{Section, Group, UniqueID}, nullptr)); auto &Entry = *IterBool.first; - if (!IterBool.second) return Entry.second; + if (!IterBool.second) + return Entry.second; - // Possibly refine the entry size first. - if (!EntrySize) { - EntrySize = MCSectionELF::DetermineEntrySize(Kind); - } + StringRef CachedName = Entry.first.SectionName; - MCSymbol *GroupSym = nullptr; - if (!Group.empty()) - GroupSym = GetOrCreateSymbol(Group); + SectionKind Kind; + if (Flags & ELF::SHF_EXECINSTR) + Kind = SectionKind::getText(); + else + Kind = SectionKind::getReadOnly(); + + MCSymbol *Begin = nullptr; + if (BeginSymName) + Begin = createTempSymbol(BeginSymName, false); - StringRef CachedName = Entry.first.first; - MCSectionELF *Result = new (*this) - MCSectionELF(CachedName, Type, Flags, Kind, EntrySize, GroupSym); + MCSectionELF *Result = new (ELFAllocator.Allocate()) + MCSectionELF(CachedName, Type, Flags, Kind, EntrySize, GroupSym, UniqueID, + Begin, Associated); Entry.second = Result; return Result; } -const MCSectionELF *MCContext::CreateELFGroupSection() { - MCSectionELF *Result = - new (*this) MCSectionELF(".group", ELF::SHT_GROUP, 0, - SectionKind::getReadOnly(), 4, nullptr); +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; } -const MCSectionCOFF *MCContext::getCOFFSection(StringRef Section, - unsigned Characteristics, - SectionKind Kind, - StringRef COMDATSymName, - int Selection) { - // Do the lookup, if we have a hit, return it. +MCSectionCOFF *MCContext::getCOFFSection(StringRef Section, + unsigned Characteristics, + SectionKind Kind, + StringRef COMDATSymName, int Selection, + const char *BeginSymName) { + MCSymbol *COMDATSymbol = nullptr; + if (!COMDATSymName.empty()) { + COMDATSymbol = getOrCreateSymbol(COMDATSymName); + COMDATSymName = COMDATSymbol->getName(); + } - SectionGroupPair P(Section, COMDATSymName); - auto IterBool = COFFUniquingMap.insert(std::make_pair(P, nullptr)); + // Do the lookup, if we have a hit, return it. + COFFSectionKey T{Section, COMDATSymName, Selection}; + auto IterBool = COFFUniquingMap.insert(std::make_pair(T, nullptr)); auto Iter = IterBool.first; if (!IterBool.second) return Iter->second; - const MCSymbol *COMDATSymbol = nullptr; - if (!COMDATSymName.empty()) - COMDATSymbol = GetOrCreateSymbol(COMDATSymName); + MCSymbol *Begin = nullptr; + if (BeginSymName) + Begin = createTempSymbol(BeginSymName, false); - StringRef CachedName = Iter->first.first; - MCSectionCOFF *Result = new (*this) - MCSectionCOFF(CachedName, Characteristics, COMDATSymbol, Selection, Kind); + StringRef CachedName = Iter->first.SectionName; + MCSectionCOFF *Result = new (COFFAllocator.Allocate()) MCSectionCOFF( + CachedName, Characteristics, COMDATSymbol, Selection, Kind, Begin); Iter->second = Result; return Result; } -const MCSectionCOFF * -MCContext::getCOFFSection(StringRef Section, unsigned Characteristics, - SectionKind Kind) { - return getCOFFSection(Section, Characteristics, Kind, "", 0); +MCSectionCOFF *MCContext::getCOFFSection(StringRef Section, + unsigned Characteristics, + SectionKind Kind, + const char *BeginSymName) { + return getCOFFSection(Section, Characteristics, Kind, "", 0, BeginSymName); } -const MCSectionCOFF *MCContext::getCOFFSection(StringRef Section) { - SectionGroupPair P(Section, ""); - auto Iter = COFFUniquingMap.find(P); +MCSectionCOFF *MCContext::getCOFFSection(StringRef Section) { + COFFSectionKey T{Section, "", 0}; + auto Iter = COFFUniquingMap.find(T); if (Iter == COFFUniquingMap.end()) return nullptr; return Iter->second; } +MCSectionCOFF *MCContext::getAssociativeCOFFSection(MCSectionCOFF *Sec, + const MCSymbol *KeySym) { + // Return the normal section if we don't have to be associative. + if (!KeySym) + return Sec; + + // Make an associative section with the same name and kind as the normal + // section. + unsigned Characteristics = + Sec->getCharacteristics() | COFF::IMAGE_SCN_LNK_COMDAT; + return getCOFFSection(Sec->getSectionName(), Characteristics, Sec->getKind(), + KeySym->getName(), + COFF::IMAGE_COMDAT_SELECT_ASSOCIATIVE); +} + +MCSubtargetInfo &MCContext::getSubtargetCopy(const MCSubtargetInfo &STI) { + return *new (MCSubtargetAllocator.Allocate()) MCSubtargetInfo(STI); +} + //===----------------------------------------------------------------------===// // Dwarf Management //===----------------------------------------------------------------------===// -/// GetDwarfFile - takes a file name an number to place in the dwarf file and +/// getDwarfFile - takes a file name an number to place in the dwarf file and /// directory tables. If the file number has already been allocated it is an /// error and zero is returned and the client reports the error, else the /// allocated file number is returned. The file numbers may be in any order. -unsigned MCContext::GetDwarfFile(StringRef Directory, StringRef FileName, +unsigned MCContext::getDwarfFile(StringRef Directory, StringRef FileName, unsigned FileNumber, unsigned CUID) { MCDwarfLineTable &Table = MCDwarfLineTablesCUMap[CUID]; return Table.getFile(Directory, FileName, FileNumber); @@ -334,21 +460,38 @@ unsigned MCContext::GetDwarfFile(StringRef Directory, StringRef FileName, /// isValidDwarfFileNumber - takes a dwarf file number and returns true if it /// currently is assigned and false otherwise. bool MCContext::isValidDwarfFileNumber(unsigned FileNumber, unsigned CUID) { - const SmallVectorImpl& MCDwarfFiles = getMCDwarfFiles(CUID); - if(FileNumber == 0 || FileNumber >= MCDwarfFiles.size()) + const SmallVectorImpl &MCDwarfFiles = getMCDwarfFiles(CUID); + if (FileNumber == 0 || FileNumber >= MCDwarfFiles.size()) return false; return !MCDwarfFiles[FileNumber].Name.empty(); } -void MCContext::FatalError(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()) +/// Remove empty sections from SectionStartEndSyms, to avoid generating +/// useless debug info for them. +void MCContext::finalizeDwarfSections(MCStreamer &MCOS) { + SectionsForRanges.remove_if( + [&](MCSection *Sec) { return !MCOS.mayHaveInstructions(*Sec); }); +} + +//===----------------------------------------------------------------------===// +// 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