#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCObjectFileInfo.h"
+#include "llvm/MC/MCRegisterInfo.h"
#include "llvm/MC/MCSectionMachO.h"
#include "llvm/MC/MCSectionELF.h"
#include "llvm/MC/MCSectionCOFF.h"
#include "llvm/MC/MCDwarf.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/ADT/Twine.h"
+#include "llvm/Support/ELF.h"
using namespace llvm;
typedef StringMap<const MCSectionMachO*> MachOUniqueMapTy;
typedef StringMap<const MCSectionCOFF*> COFFUniqueMapTy;
-MCContext::MCContext(const MCAsmInfo &mai) : MAI(mai), NextUniqueID(0),
- CurrentDwarfLoc(0,0,0,DWARF2_FLAG_IS_STMT,0,0) {
+MCContext::MCContext(const MCAsmInfo &mai, const MCRegisterInfo &mri,
+ const MCObjectFileInfo *mofi) :
+ MAI(mai), MRI(mri), MOFI(mofi),
+ Allocator(), Symbols(Allocator), UsedNames(Allocator),
+ NextUniqueID(0),
+ CurrentDwarfLoc(0,0,0,DWARF2_FLAG_IS_STMT,0,0),
+ AllowTemporaryLabels(true) {
MachOUniquingMap = 0;
ELFUniquingMap = 0;
COFFUniquingMap = 0;
MCSymbol *MCContext::GetOrCreateSymbol(StringRef Name) {
assert(!Name.empty() && "Normal symbols cannot be unnamed!");
- // Determine whether this is an assembler temporary or normal label.
- bool isTemporary = Name.startswith(MAI.getPrivateGlobalPrefix());
-
// Do the lookup and get the entire StringMapEntry. We want access to the
// key if we are creating the entry.
StringMapEntry<MCSymbol*> &Entry = Symbols.GetOrCreateValue(Name);
- if (Entry.getValue()) return Entry.getValue();
+ MCSymbol *Sym = Entry.getValue();
+
+ if (Sym)
+ return Sym;
+
+ Sym = CreateSymbol(Name);
+ Entry.setValue(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());
+
+ StringMapEntry<bool> *NameEntry = &UsedNames.GetOrCreateValue(Name);
+ if (NameEntry->getValue()) {
+ assert(isTemporary && "Cannot rename non temporary symbols");
+ SmallString<128> NewName = Name;
+ do {
+ NewName.resize(Name.size());
+ raw_svector_ostream(NewName) << NextUniqueID++;
+ NameEntry = &UsedNames.GetOrCreateValue(NewName);
+ } while (NameEntry->getValue());
+ }
+ 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 StringMapEntry.
- MCSymbol *Result = new (*this) MCSymbol(Entry.getKey(), isTemporary);
- Entry.setValue(Result);
- return Result;
+ // to the copy of the string that is embedded in the UsedNames entry.
+ MCSymbol *Result = new (*this) MCSymbol(NameEntry->getKey(), isTemporary);
+
+ return Result;
}
MCSymbol *MCContext::GetOrCreateSymbol(const Twine &Name) {
}
MCSymbol *MCContext::CreateTempSymbol() {
- return GetOrCreateSymbol(Twine(MAI.getPrivateGlobalPrefix()) +
- "tmp" + Twine(NextUniqueID++));
+ SmallString<128> NameSV;
+ raw_svector_ostream(NameSV)
+ << MAI.getPrivateGlobalPrefix() << "tmp" << NextUniqueID++;
+ return CreateSymbol(NameSV);
}
unsigned MCContext::NextInstance(int64_t LocalLabelVal) {
const MCSectionELF *MCContext::CreateELFGroupSection() {
MCSectionELF *Result =
- new (*this) MCSectionELF(".group", MCSectionELF::SHT_GROUP, 0,
+ new (*this) MCSectionELF(".group", ELF::SHT_GROUP, 0,
SectionKind::getReadOnly(), 4, NULL);
return Result;
}