#include "llvm/ADT/StringMap.h"
#include "llvm/ADT/Twine.h"
#include "llvm/MC/MCDwarf.h"
+#include "llvm/MC/MCSubtargetInfo.h"
#include "llvm/MC/SectionKind.h"
#include "llvm/Support/Allocator.h"
#include "llvm/Support/Compiler.h"
class MCExpr;
class MCSection;
class MCSymbol;
+ class MCSymbolELF;
class MCLabel;
struct MCDwarfFile;
class MCDwarfLoc;
/// sections that it creates.
///
class MCContext {
- MCContext(const MCContext&) = delete;
- MCContext &operator=(const MCContext&) = delete;
+ MCContext(const MCContext &) = delete;
+ MCContext &operator=(const MCContext &) = delete;
+
public:
- typedef StringMap<MCSymbol*, BumpPtrAllocator&> SymbolTable;
+ typedef StringMap<MCSymbol *, BumpPtrAllocator &> SymbolTable;
+
private:
/// The SourceMgr for this object, if any.
const SourceMgr *SrcMgr;
/// objects.
BumpPtrAllocator Allocator;
+ SpecificBumpPtrAllocator<MCSectionCOFF> COFFAllocator;
+ SpecificBumpPtrAllocator<MCSectionELF> ELFAllocator;
+ SpecificBumpPtrAllocator<MCSectionMachO> MachOAllocator;
+
/// Bindings of names to symbols.
SymbolTable Symbols;
/// ELF sections can have a corresponding symbol. This maps one to the
/// other.
- DenseMap<const MCSectionELF*, MCSymbol*> SectionSymbols;
+ DenseMap<const MCSectionELF *, MCSymbolELF *> SectionSymbols;
- /// A maping from a local label number and an instance count to a symbol.
+ /// A mapping from a local label number and an instance count to a symbol.
/// For example, in the assembly
/// 1:
/// 2:
/// 1:
/// We have three labels represented by the pairs (1, 0), (2, 0) and (1, 1)
- DenseMap<std::pair<unsigned, unsigned>, MCSymbol*> LocalSymbols;
+ DenseMap<std::pair<unsigned, unsigned>, MCSymbol *> LocalSymbols;
/// Keeps tracks of names that were used both for used declared and
/// artificial symbols.
- StringMap<bool, BumpPtrAllocator&> UsedNames;
+ StringMap<bool, BumpPtrAllocator &> UsedNames;
/// The next ID to dole out to an unnamed assembler temporary symbol with
/// a given prefix.
/// directive is used or it is an error.
char *SecureLogFile;
/// The stream that gets written to for the .secure_log_unique directive.
- raw_ostream *SecureLog;
+ std::unique_ptr<raw_fd_ostream> SecureLog;
/// Boolean toggled when .secure_log_unique / .secure_log_reset is seen to
/// catch errors if .secure_log_unique appears twice without
/// .secure_log_reset appearing between them.
/// assembly source files.
unsigned GenDwarfFileNumber;
- /// Symbols created for the start and end of each section, used for
- /// generating the .debug_ranges and .debug_aranges sections.
- MapVector<const MCSection *, std::pair<MCSymbol *, MCSymbol *> >
- SectionStartEndSyms;
+ /// Sections for generating the .debug_ranges and .debug_aranges sections.
+ SetVector<MCSection *> SectionsForRanges;
/// The information gathered from labels that will have dwarf label
/// entries when generating dwarf assembly source files.
/// differences between temporary and non-temporary labels (primarily on
/// Darwin).
bool AllowTemporaryLabels;
+ bool UseNamesOnTempLabels = true;
/// The Compile Unit ID that we are currently processing.
unsigned DwarfCompileUnitID;
}
};
- StringMap<const MCSectionMachO*> MachOUniquingMap;
- std::map<ELFSectionKey, const MCSectionELF *> ELFUniquingMap;
- std::map<COFFSectionKey, const MCSectionCOFF *> COFFUniquingMap;
+ StringMap<MCSectionMachO *> MachOUniquingMap;
+ std::map<ELFSectionKey, MCSectionELF *> ELFUniquingMap;
+ std::map<COFFSectionKey, MCSectionCOFF *> COFFUniquingMap;
StringMap<bool> ELFRelSecNames;
+ SpecificBumpPtrAllocator<MCSubtargetInfo> MCSubtargetAllocator;
+
/// Do automatic reset in destructor
bool AutoReset;
- MCSymbol *CreateSymbol(StringRef Name, bool AlwaysAddSuffix);
+ bool HadError;
+
+ MCSymbol *createSymbolImpl(const StringMapEntry<bool> *Name,
+ bool CanBeUnnamed);
+ MCSymbol *createSymbol(StringRef Name, bool AlwaysAddSuffix,
+ bool IsTemporary);
MCSymbol *getOrCreateDirectionalLocalSymbol(unsigned LocalLabelVal,
unsigned Instance);
const MCObjectFileInfo *getObjectFileInfo() const { return MOFI; }
void setAllowTemporaryLabels(bool Value) { AllowTemporaryLabels = Value; }
+ void setUseNamesOnTempLabels(bool Value) { UseNamesOnTempLabels = Value; }
- /// @name Module Lifetime Management
+ /// \name Module Lifetime Management
/// @{
/// reset - return object to right after construction state to prepare
/// @}
- /// @name Symbol Management
+ /// \name Symbol Management
/// @{
/// Create and return a new linker temporary symbol with a unique but
/// unspecified name.
- MCSymbol *CreateLinkerPrivateTempSymbol();
+ MCSymbol *createLinkerPrivateTempSymbol();
/// Create and return a new assembler temporary symbol with a unique but
/// unspecified name.
- MCSymbol *CreateTempSymbol();
+ MCSymbol *createTempSymbol(bool CanBeUnnamed = true);
- MCSymbol *createTempSymbol(const Twine &Name, bool AlwaysAddSuffix);
+ MCSymbol *createTempSymbol(const Twine &Name, bool AlwaysAddSuffix,
+ bool CanBeUnnamed = true);
/// Create the definition of a directional local symbol for numbered label
/// (used for "1:" definitions).
- MCSymbol *CreateDirectionalLocalSymbol(unsigned LocalLabelVal);
+ MCSymbol *createDirectionalLocalSymbol(unsigned LocalLabelVal);
/// Create and return a directional local symbol for numbered label (used
/// for "1b" or 1f" references).
- MCSymbol *GetDirectionalLocalSymbol(unsigned LocalLabelVal, bool Before);
+ MCSymbol *getDirectionalLocalSymbol(unsigned LocalLabelVal, bool Before);
- /// Lookup the symbol inside with the specified @p Name. If it exists,
+ /// Lookup the symbol inside with the specified \p Name. If it exists,
/// return it. If not, create a forward reference and return it.
///
- /// @param Name - The symbol name, which must be unique across all symbols.
- MCSymbol *GetOrCreateSymbol(const Twine &Name);
+ /// \param Name - The symbol name, which must be unique across all symbols.
+ MCSymbol *getOrCreateSymbol(const Twine &Name);
- MCSymbol *getOrCreateSectionSymbol(const MCSectionELF &Section);
+ MCSymbolELF *getOrCreateSectionSymbol(const MCSectionELF &Section);
+ /// Gets a symbol that will be defined to the final stack offset of a local
+ /// variable after codegen.
+ ///
+ /// \param Idx - The index of a local variable passed to @llvm.localescape.
MCSymbol *getOrCreateFrameAllocSymbol(StringRef FuncName, unsigned Idx);
+
MCSymbol *getOrCreateParentFrameOffsetSymbol(StringRef FuncName);
+ MCSymbol *getOrCreateLSDASymbol(StringRef FuncName);
+
/// Get the symbol for \p Name, or null.
- MCSymbol *LookupSymbol(const Twine &Name) const;
+ MCSymbol *lookupSymbol(const Twine &Name) const;
/// getSymbols - Get a reference for the symbol table for clients that
/// want to, for example, iterate over all symbols. 'const' because we
/// still want any modifications to the table itself to use the MCContext
/// APIs.
- const SymbolTable &getSymbols() const {
- return Symbols;
- }
+ const SymbolTable &getSymbols() const { return Symbols; }
/// @}
- /// @name Section Management
+ /// \name Section Management
/// @{
/// Return the MCSection for the specified mach-o section. This requires
/// the operands to be valid.
- const MCSectionMachO *getMachOSection(StringRef Segment, StringRef Section,
- unsigned TypeAndAttributes,
- unsigned Reserved2, SectionKind K,
- const char *BeginSymName = nullptr);
-
- const MCSectionMachO *getMachOSection(StringRef Segment, StringRef Section,
- unsigned TypeAndAttributes,
- SectionKind K,
- const char *BeginSymName = nullptr) {
+ MCSectionMachO *getMachOSection(StringRef Segment, StringRef Section,
+ unsigned TypeAndAttributes,
+ unsigned Reserved2, SectionKind K,
+ const char *BeginSymName = nullptr);
+
+ MCSectionMachO *getMachOSection(StringRef Segment, StringRef Section,
+ unsigned TypeAndAttributes, SectionKind K,
+ const char *BeginSymName = nullptr) {
return getMachOSection(Segment, Section, TypeAndAttributes, 0, K,
BeginSymName);
}
- const MCSectionELF *getELFSection(StringRef Section, unsigned Type,
- unsigned Flags) {
+ MCSectionELF *getELFSection(StringRef Section, unsigned Type,
+ unsigned Flags) {
return getELFSection(Section, Type, Flags, nullptr);
}
- const MCSectionELF *getELFSection(StringRef Section, unsigned Type,
- unsigned Flags,
- const char *BeginSymName) {
+ MCSectionELF *getELFSection(StringRef Section, unsigned Type,
+ unsigned Flags, const char *BeginSymName) {
return getELFSection(Section, Type, Flags, 0, "", BeginSymName);
}
- const MCSectionELF *getELFSection(StringRef Section, unsigned Type,
- unsigned Flags, unsigned EntrySize,
- StringRef Group) {
+ MCSectionELF *getELFSection(StringRef Section, unsigned Type,
+ unsigned Flags, unsigned EntrySize,
+ StringRef Group) {
return getELFSection(Section, Type, Flags, EntrySize, Group, nullptr);
}
- const MCSectionELF *getELFSection(StringRef Section, unsigned Type,
- unsigned Flags, unsigned EntrySize,
- StringRef Group,
- const char *BeginSymName) {
+ MCSectionELF *getELFSection(StringRef Section, unsigned Type,
+ unsigned Flags, unsigned EntrySize,
+ StringRef Group, const char *BeginSymName) {
return getELFSection(Section, Type, Flags, EntrySize, Group, ~0,
BeginSymName);
}
- const MCSectionELF *getELFSection(StringRef Section, unsigned Type,
- unsigned Flags, unsigned EntrySize,
- StringRef Group, unsigned UniqueID) {
+ MCSectionELF *getELFSection(StringRef Section, unsigned Type,
+ unsigned Flags, unsigned EntrySize,
+ StringRef Group, unsigned UniqueID) {
return getELFSection(Section, Type, Flags, EntrySize, Group, UniqueID,
nullptr);
}
- const MCSectionELF *getELFSection(StringRef Section, unsigned Type,
- unsigned Flags, unsigned EntrySize,
- StringRef Group, unsigned UniqueID,
- const char *BeginSymName);
+ MCSectionELF *getELFSection(StringRef Section, unsigned Type,
+ unsigned Flags, unsigned EntrySize,
+ StringRef Group, unsigned UniqueID,
+ const char *BeginSymName);
- const MCSectionELF *createELFRelSection(StringRef Name, unsigned Type,
- unsigned Flags, unsigned EntrySize,
- const MCSymbol *Group);
+ MCSectionELF *getELFSection(StringRef Section, unsigned Type,
+ unsigned Flags, unsigned EntrySize,
+ const MCSymbolELF *Group, unsigned UniqueID,
+ const char *BeginSymName,
+ const MCSectionELF *Associated);
+
+ MCSectionELF *createELFRelSection(StringRef Name, unsigned Type,
+ unsigned Flags, unsigned EntrySize,
+ const MCSymbolELF *Group,
+ const MCSectionELF *Associated);
- void renameELFSection(const MCSectionELF *Section, StringRef Name);
+ void renameELFSection(MCSectionELF *Section, StringRef Name);
- const MCSectionELF *CreateELFGroupSection();
+ MCSectionELF *createELFGroupSection(const MCSymbolELF *Group);
- const MCSectionCOFF *getCOFFSection(StringRef Section,
- unsigned Characteristics,
- SectionKind Kind,
- StringRef COMDATSymName, int Selection,
- const char *BeginSymName = nullptr);
+ MCSectionCOFF *getCOFFSection(StringRef Section, unsigned Characteristics,
+ SectionKind Kind, StringRef COMDATSymName,
+ int Selection,
+ const char *BeginSymName = nullptr);
- const MCSectionCOFF *getCOFFSection(StringRef Section,
- unsigned Characteristics,
- SectionKind Kind,
- const char *BeginSymName = nullptr);
+ MCSectionCOFF *getCOFFSection(StringRef Section, unsigned Characteristics,
+ SectionKind Kind,
+ const char *BeginSymName = nullptr);
- const MCSectionCOFF *getCOFFSection(StringRef Section);
+ MCSectionCOFF *getCOFFSection(StringRef Section);
/// Gets or creates a section equivalent to Sec that is associated with the
/// section containing KeySym. For example, to create a debug info section
/// associated with an inline function, pass the normal debug info section
/// as Sec and the function symbol as KeySym.
- const MCSectionCOFF *getAssociativeCOFFSection(const MCSectionCOFF *Sec,
- const MCSymbol *KeySym);
+ MCSectionCOFF *getAssociativeCOFFSection(MCSectionCOFF *Sec,
+ const MCSymbol *KeySym);
+
+ // Create and save a copy of STI and return a reference to the copy.
+ MCSubtargetInfo &getSubtargetCopy(const MCSubtargetInfo &STI);
/// @}
- /// @name Dwarf Management
+ /// \name Dwarf Management
/// @{
/// \brief Get the compilation directory for DW_AT_comp_dir
void setMainFileName(StringRef S) { MainFileName = S; }
/// Creates an entry in the dwarf file and directory tables.
- unsigned GetDwarfFile(StringRef Directory, StringRef FileName,
+ unsigned getDwarfFile(StringRef Directory, StringRef FileName,
unsigned FileNumber, unsigned CUID);
bool isValidDwarfFileNumber(unsigned FileNumber, unsigned CUID = 0);
return true;
return false;
}
- unsigned getDwarfCompileUnitID() {
- return DwarfCompileUnitID;
- }
+ unsigned getDwarfCompileUnitID() { return DwarfCompileUnitID; }
void setDwarfCompileUnitID(unsigned CUIndex) {
DwarfCompileUnitID = CUIndex;
}
CurrentDwarfLoc.setDiscriminator(Discriminator);
DwarfLocSeen = true;
}
- void ClearDwarfLocSeen() { DwarfLocSeen = false; }
+ void clearDwarfLocSeen() { DwarfLocSeen = false; }
bool getDwarfLocSeen() { return DwarfLocSeen; }
const MCDwarfLoc &getCurrentDwarfLoc() { return CurrentDwarfLoc; }
void setGenDwarfFileNumber(unsigned FileNumber) {
GenDwarfFileNumber = FileNumber;
}
- MapVector<const MCSection *, std::pair<MCSymbol *, MCSymbol *> > &
- getGenDwarfSectionSyms() {
- return SectionStartEndSyms;
+ const SetVector<MCSection *> &getGenDwarfSectionSyms() {
+ return SectionsForRanges;
}
- std::pair<MapVector<const MCSection *,
- std::pair<MCSymbol *, MCSymbol *> >::iterator,
- bool>
- addGenDwarfSection(const MCSection *Sec) {
- return SectionStartEndSyms.insert(
- std::make_pair(Sec, std::make_pair(nullptr, nullptr)));
+ bool addGenDwarfSection(MCSection *Sec) {
+ return SectionsForRanges.insert(Sec);
}
+
void finalizeDwarfSections(MCStreamer &MCOS);
const std::vector<MCGenDwarfLabelEntry> &getMCGenDwarfLabelEntries() const {
return MCGenDwarfLabelEntries;
/// @}
char *getSecureLogFile() { return SecureLogFile; }
- raw_ostream *getSecureLog() { return SecureLog; }
+ raw_fd_ostream *getSecureLog() { return SecureLog.get(); }
bool getSecureLogUsed() { return SecureLogUsed; }
- void setSecureLog(raw_ostream *Value) {
- SecureLog = Value;
- }
- void setSecureLogUsed(bool Value) {
- SecureLogUsed = Value;
+ void setSecureLog(std::unique_ptr<raw_fd_ostream> Value) {
+ SecureLog = std::move(Value);
}
+ void setSecureLogUsed(bool Value) { SecureLogUsed = Value; }
- void *Allocate(unsigned Size, unsigned Align = 8) {
+ void *allocate(unsigned Size, unsigned Align = 8) {
return Allocator.Allocate(Size, Align);
}
- void Deallocate(void *Ptr) {
- }
+ void deallocate(void *Ptr) {}
+ bool hadError() { return HadError; }
+ void reportError(SMLoc L, const Twine &Msg);
// Unrecoverable error has occurred. Display the best diagnostic we can
// and bail via exit(1). For now, most MC backend errors are unrecoverable.
// FIXME: We should really do something about that.
- LLVM_ATTRIBUTE_NORETURN void FatalError(SMLoc L, const Twine &Msg) const;
+ LLVM_ATTRIBUTE_NORETURN void reportFatalError(SMLoc L,
+ const Twine &Msg);
};
} // end namespace llvm
// operator new and delete aren't allowed inside namespaces.
// The throw specifications are mandated by the standard.
-/// @brief Placement new for using the MCContext's allocator.
+/// \brief Placement new for using the MCContext's allocator.
///
/// This placement form of operator new uses the MCContext's allocator for
/// obtaining memory. It is a non-throwing new, which means that it returns
/// null on error. (If that is what the allocator does. The current does, so if
/// this ever changes, this operator will have to be changed, too.)
/// Usage looks like this (assuming there's an MCContext 'Context' in scope):
-/// @code
-/// // Default alignment (16)
+/// \code
+/// // Default alignment (8)
/// IntegerLiteral *Ex = new (Context) IntegerLiteral(arguments);
/// // Specific alignment
-/// IntegerLiteral *Ex2 = new (Context, 8) IntegerLiteral(arguments);
-/// @endcode
+/// IntegerLiteral *Ex2 = new (Context, 4) IntegerLiteral(arguments);
+/// \endcode
/// Please note that you cannot use delete on the pointer; it must be
/// deallocated using an explicit destructor call followed by
-/// @c Context.Deallocate(Ptr).
+/// \c Context.Deallocate(Ptr).
///
-/// @param Bytes The number of bytes to allocate. Calculated by the compiler.
-/// @param C The MCContext that provides the allocator.
-/// @param Alignment The alignment of the allocated memory (if the underlying
+/// \param Bytes The number of bytes to allocate. Calculated by the compiler.
+/// \param C The MCContext that provides the allocator.
+/// \param Alignment The alignment of the allocated memory (if the underlying
/// allocator supports it).
-/// @return The allocated memory. Could be NULL.
+/// \return The allocated memory. Could be NULL.
inline void *operator new(size_t Bytes, llvm::MCContext &C,
- size_t Alignment = 16) throw () {
- return C.Allocate(Bytes, Alignment);
+ size_t Alignment = 8) LLVM_NOEXCEPT {
+ return C.allocate(Bytes, Alignment);
}
-/// @brief Placement delete companion to the new above.
+/// \brief Placement delete companion to the new above.
///
/// This operator is just a companion to the new above. There is no way of
/// invoking it directly; see the new operator for more details. This operator
/// is called implicitly by the compiler if a placement new expression using
/// the MCContext throws in the object constructor.
-inline void operator delete(void *Ptr, llvm::MCContext &C, size_t)
- throw () {
- C.Deallocate(Ptr);
+inline void operator delete(void *Ptr, llvm::MCContext &C,
+ size_t) LLVM_NOEXCEPT {
+ C.deallocate(Ptr);
}
/// This placement form of operator new[] uses the MCContext's allocator for
/// obtaining memory. It is a non-throwing new[], which means that it returns
/// null on error.
/// Usage looks like this (assuming there's an MCContext 'Context' in scope):
-/// @code
-/// // Default alignment (16)
+/// \code
+/// // Default alignment (8)
/// char *data = new (Context) char[10];
/// // Specific alignment
-/// char *data = new (Context, 8) char[10];
-/// @endcode
+/// char *data = new (Context, 4) char[10];
+/// \endcode
/// Please note that you cannot use delete on the pointer; it must be
/// deallocated using an explicit destructor call followed by
-/// @c Context.Deallocate(Ptr).
+/// \c Context.Deallocate(Ptr).
///
-/// @param Bytes The number of bytes to allocate. Calculated by the compiler.
-/// @param C The MCContext that provides the allocator.
-/// @param Alignment The alignment of the allocated memory (if the underlying
+/// \param Bytes The number of bytes to allocate. Calculated by the compiler.
+/// \param C The MCContext that provides the allocator.
+/// \param Alignment The alignment of the allocated memory (if the underlying
/// allocator supports it).
-/// @return The allocated memory. Could be NULL.
-inline void *operator new[](size_t Bytes, llvm::MCContext& C,
- size_t Alignment = 16) throw () {
- return C.Allocate(Bytes, Alignment);
+/// \return The allocated memory. Could be NULL.
+inline void *operator new[](size_t Bytes, llvm::MCContext &C,
+ size_t Alignment = 8) LLVM_NOEXCEPT {
+ return C.allocate(Bytes, Alignment);
}
-/// @brief Placement delete[] companion to the new[] above.
+/// \brief Placement delete[] companion to the new[] above.
///
/// This operator is just a companion to the new[] above. There is no way of
/// invoking it directly; see the new[] operator for more details. This operator
/// is called implicitly by the compiler if a placement new[] expression using
/// the MCContext throws in the object constructor.
-inline void operator delete[](void *Ptr, llvm::MCContext &C) throw () {
- C.Deallocate(Ptr);
+inline void operator delete[](void *Ptr, llvm::MCContext &C) LLVM_NOEXCEPT {
+ C.deallocate(Ptr);
}
#endif
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