class Constant : public User {
void operator=(const Constant &); // Do not implement
Constant(const Constant &); // Do not implement
+
protected:
Constant(const Type *ty, ValueTy vty, Use *Ops, unsigned NumOps)
: User(ty, vty, Ops, NumOps) {}
MDString(const char *begin, const char *end);
const char *StrBegin, *StrEnd;
+ friend class LLVMContextImpl;
protected:
// allocate space for exactly zero operands
void *operator new(size_t s) {
return User::operator new(s, 0);
}
public:
- /// get() - Static factory methods - Return objects of the specified value.
- ///
- static MDString *get(const char *StrBegin, const char *StrEnd);
- static MDString *get(const std::string &Str);
-
/// size() - The length of this string.
///
intptr_t size() const { return StrEnd - StrBegin; }
// Other helpers
/// @brief Create a result type for fcmp/icmp
const Type* makeCmpResultType(const Type* opnd_type);
+
+ // Methods for erasing constants
+ void erase(MDString *M);
};
/// FOR BACKWARDS COMPATIBILITY - Returns a global context.
: Constant(Type::MetadataTy, MDStringVal, 0, 0),
StrBegin(begin), StrEnd(end) {}
-static ManagedStatic<StringMap<MDString*> > MDStringCache;
-
-MDString *MDString::get(const char *StrBegin, const char *StrEnd) {
- sys::SmartScopedWriter<true> Writer(*ConstantsLock);
- StringMapEntry<MDString *> &Entry = MDStringCache->GetOrCreateValue(
- StrBegin, StrEnd);
- MDString *&S = Entry.getValue();
- if (!S) S = new MDString(Entry.getKeyData(),
- Entry.getKeyData() + Entry.getKeyLength());
-
- return S;
-}
-
-MDString *MDString::get(const std::string &Str) {
- sys::SmartScopedWriter<true> Writer(*ConstantsLock);
- StringMapEntry<MDString *> &Entry = MDStringCache->GetOrCreateValue(
- Str.data(), Str.data() + Str.size());
- MDString *&S = Entry.getValue();
- if (!S) S = new MDString(Entry.getKeyData(),
- Entry.getKeyData() + Entry.getKeyLength());
-
- return S;
-}
-
void MDString::destroyConstant() {
- sys::SmartScopedWriter<true> Writer(*ConstantsLock);
- MDStringCache->erase(MDStringCache->find(StrBegin, StrEnd));
+ getType()->getContext().erase(this);
destroyConstantImpl();
}
// MDString accessors
MDString* LLVMContext::getMDString(const char *StrBegin, const char *StrEnd) {
- return MDString::get(StrBegin, StrEnd);
+ return pImpl->getMDString(StrBegin, StrEnd);
}
MDString* LLVMContext::getMDString(const std::string &Str) {
- return MDString::get(Str);
+ return getMDString(Str.data(), Str.data()+Str.size());
}
// FunctionType accessors
}
return Type::Int1Ty;
}
+
+void LLVMContext::erase(MDString *M) {
+ pImpl->erase(M);
+}
\ No newline at end of file
}
return Slot;
-}
\ No newline at end of file
+}
+
+MDString *LLVMContextImpl::getMDString(const char *StrBegin,
+ const char *StrEnd) {
+ sys::SmartScopedWriter<true> Writer(ConstantsLock);
+ StringMapEntry<MDString *> &Entry = MDStringCache.GetOrCreateValue(
+ StrBegin, StrEnd);
+ MDString *&S = Entry.getValue();
+ if (!S) S = new MDString(Entry.getKeyData(),
+ Entry.getKeyData() + Entry.getKeyLength());
+
+ return S;
+}
+
+// *** erase methods ***
+
+void LLVMContextImpl::erase(MDString *M) {
+ sys::SmartScopedWriter<true> Writer(ConstantsLock);
+ MDStringCache.erase(MDStringCache.find(M->StrBegin, M->StrEnd));
+}
#include "llvm/ADT/APFloat.h"
#include "llvm/ADT/APInt.h"
#include "llvm/ADT/DenseMap.h"
+#include "llvm/ADT/StringMap.h"
namespace llvm {
class ConstantInt;
class ConstantFP;
+class MDString;
class LLVMContext;
class Type;
DenseMapAPFloatKeyInfo> FPMapTy;
FPMapTy FPConstants;
+ StringMap<MDString*> MDStringCache;
+
LLVMContext &Context;
LLVMContextImpl();
LLVMContextImpl(const LLVMContextImpl&);
ConstantInt *getConstantInt(const APInt &V);
ConstantFP *getConstantFP(const APFloat &V);
+
+ MDString *getMDString(const char *StrBegin, const char *StrEnd);
+
+
+ void erase(MDString *M);
};
}