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Change MCSymbol IsELF to an enum to support future MCSymbolCOFF and MCSymbolMachO.

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Reviewed by Rafael Espíndola.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239311 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Pete Cooper 2015-06-08 17:17:09 +00:00
parent b0d6c659b7
commit 62f764a6c9
3 changed files with 20 additions and 6 deletions
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22
include/llvm/MC/MCSymbol.h
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@ -35,6 +35,16 @@ class raw_ostream;
/// 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 {
protected:
/// The kind of the symbol. If it is any value other than unset then this
/// class is actually one of the appropriate subclasses of MCSymbol.
enum SymbolKind {
SymbolKindUnset,
SymbolKindCOFF,
SymbolKindELF,
SymbolKindMachO,
};
// Special sentinal value for the absolute pseudo section.
//
// FIXME: Use a PointerInt wrapper for this?
@ -83,7 +93,7 @@ class MCSymbol {
mutable unsigned HasFragment : 1;
unsigned IsELF : 1;
SymbolKind Kind : 2;
/// Index field, for use by the object file implementation.
mutable uint32_t Index = 0;
@ -108,11 +118,11 @@ class MCSymbol {
protected: // MCContext creates and uniques these.
friend class MCExpr;
friend class MCContext;
MCSymbol(bool IsELF, const StringMapEntry<bool> *Name, bool isTemporary)
MCSymbol(SymbolKind Kind, const StringMapEntry<bool> *Name, bool isTemporary)
: Name(Name), Section(nullptr), Value(nullptr), IsTemporary(isTemporary),
IsRedefinable(false), IsUsed(false), IsRegistered(false),
IsExternal(false), IsPrivateExtern(false), HasFragment(false),
IsELF(IsELF) {
Kind(Kind) {
Offset = 0;
}
@ -197,7 +207,11 @@ public:
Section = nullptr;
}
bool isELF() const { return IsELF; }
bool isELF() const { return Kind == SymbolKindELF; }
bool isCOFF() const { return Kind == SymbolKindCOFF; }
bool isMachO() const { return Kind == SymbolKindMachO; }
/// @}
/// \name Variable Symbols

2
include/llvm/MC/MCSymbolELF.h
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@ -19,7 +19,7 @@ class MCSymbolELF : public MCSymbol {
public:
MCSymbolELF(const StringMapEntry<bool> *Name, bool isTemporary)
: MCSymbol(true, Name, isTemporary) {}
: MCSymbol(SymbolKindELF, Name, isTemporary) {}
void setSize(const MCExpr *SS) { SymbolSize = SS; }
const MCExpr *getSize() const { return SymbolSize; }

2
lib/MC/MCContext.cpp
View File

@ -162,7 +162,7 @@ MCSymbol *MCContext::createSymbolImpl(const StringMapEntry<bool> *Name,
bool IsELF = MOFI && MOFI->getObjectFileType() == MCObjectFileInfo::IsELF;
if (IsELF)
return new (*this) MCSymbolELF(Name, IsTemporary);
return new (*this) MCSymbol(false, Name, IsTemporary);
return new (*this) MCSymbol(MCSymbol::SymbolKindUnset, Name, IsTemporary);
}
MCSymbol *MCContext::createSymbol(StringRef Name, bool AlwaysAddSuffix,