- class MCExpr;
- class MCSection;
- class MCContext;
- class raw_ostream;
-
- /// MCSymbol - Instances of this class represent a symbol name in the MC file,
- /// and MCSymbols are created and uniqued by the MCContext class. MCSymbols
- /// should only be constructed with valid names for the object file.
- ///
- /// If the symbol is defined/emitted into the current translation unit, the
- /// Section member is set to indicate what section it lives in. Otherwise, if
- /// it is a reference to an external entity, it has a null section.
- class MCSymbol {
- // Special sentinal value for the absolute pseudo section.
- //
- // FIXME: Use a PointerInt wrapper for this?
- static const MCSection *AbsolutePseudoSection;
-
- /// Name - The name of the symbol. The referred-to string data is actually
- /// held by the StringMap that lives in MCContext.
- StringRef Name;
-
- /// Section - The section the symbol is defined in. This is null for
- /// undefined symbols, and the special AbsolutePseudoSection value for
- /// absolute symbols. If this is a variable symbol, this caches the
- /// variable value's section.
- mutable const MCSection *Section;
-
- /// Value - If non-null, the value for a variable symbol.
- const MCExpr *Value;
-
- /// IsTemporary - True if this is an assembler temporary label, which
- /// typically does not survive in the .o file's symbol table. Usually
- /// "Lfoo" or ".foo".
- unsigned IsTemporary : 1;
-
- /// \brief True if this symbol can be redefined.
- unsigned IsRedefinable : 1;
-
- /// IsUsed - True if this symbol has been used.
- mutable unsigned IsUsed : 1;
-
- private: // MCContext creates and uniques these.
- friend class MCExpr;
- friend class MCContext;
- MCSymbol(StringRef name, bool isTemporary)
- : Name(name), Section(nullptr), Value(nullptr),
- IsTemporary(isTemporary), IsRedefinable(false), IsUsed(false) {}
-
- MCSymbol(const MCSymbol&) = delete;
- void operator=(const MCSymbol&) = delete;
- const MCSection *getSectionPtr() const {
- if (Section || !Value)
- return Section;
- return Section = Value->FindAssociatedSection();
- }
-
- public:
- /// getName - Get the symbol name.
- StringRef getName() const { return Name; }
-
- /// \name Accessors
- /// @{
-
- /// isTemporary - Check if this is an assembler temporary symbol.
- bool isTemporary() const { return IsTemporary; }
-
- /// isUsed - Check if this is used.
- bool isUsed() const { return IsUsed; }
- void setUsed(bool Value) const { IsUsed = Value; }
-
- /// \brief Check if this symbol is redefinable.
- bool isRedefinable() const { return IsRedefinable; }
- /// \brief Mark this symbol as redefinable.
- void setRedefinable(bool Value) { IsRedefinable = Value; }
- /// \brief Prepare this symbol to be redefined.
- void redefineIfPossible() {
- if (IsRedefinable) {
- Value = nullptr;
- Section = nullptr;
- IsRedefinable = false;
- }
- }
+class MCExpr;
+class MCSection;
+class MCContext;
+class raw_ostream;
+
+/// MCSymbol - Instances of this class represent a symbol name in the MC file,
+/// and MCSymbols are created and uniqued by the MCContext class. MCSymbols
+/// should only be constructed with valid names for the object file.
+///
+/// If the symbol is defined/emitted into the current translation unit, the
+/// Section member is set to indicate what section it lives in. Otherwise, if
+/// it is a reference to an external entity, it has a null section.
+class MCSymbol {
+ // Special sentinal value for the absolute pseudo section.
+ //
+ // FIXME: Use a PointerInt wrapper for this?
+ static const MCSection *AbsolutePseudoSection;
+
+ /// Name - The name of the symbol. The referred-to string data is actually
+ /// held by the StringMap that lives in MCContext.
+ StringRef Name;
+
+ /// Section - The section the symbol is defined in. This is null for
+ /// undefined symbols, and the special AbsolutePseudoSection value for
+ /// absolute symbols. If this is a variable symbol, this caches the
+ /// variable value's section.
+ mutable const MCSection *Section;
+
+ /// Value - If non-null, the value for a variable symbol.
+ const MCExpr *Value;
+
+ /// IsTemporary - True if this is an assembler temporary label, which
+ /// typically does not survive in the .o file's symbol table. Usually
+ /// "Lfoo" or ".foo".
+ unsigned IsTemporary : 1;
+
+ /// \brief True if this symbol can be redefined.
+ unsigned IsRedefinable : 1;
+
+ /// IsUsed - True if this symbol has been used.
+ mutable unsigned IsUsed : 1;
+
+private: // MCContext creates and uniques these.
+ friend class MCExpr;
+ friend class MCContext;
+ MCSymbol(StringRef name, bool isTemporary)
+ : Name(name), Section(nullptr), Value(nullptr), IsTemporary(isTemporary),
+ IsRedefinable(false), IsUsed(false) {}
+
+ MCSymbol(const MCSymbol &) = delete;
+ void operator=(const MCSymbol &) = delete;
+ const MCSection *getSectionPtr() const {
+ if (Section || !Value)
+ return Section;
+ return Section = Value->FindAssociatedSection();
+ }