#include "llvm/DerivedTypes.h"
#include "llvm/SymbolTable.h"
+#include "llvm/Constants.h"
#include "Support/StringExtras.h"
#include "Support/STLExtras.h"
#include <iostream>
+#include <algorithm>
using std::vector;
using std::string;
cerr << "PATypeHolder(" << (void*)this << ")\n";
}
+
Type::Type(const string &name, PrimitiveID id)
: Value(Type::TypeTy, Value::TypeVal) {
setDescription(name);
//
bool Type::isLosslesslyConvertableTo(const Type *Ty) const {
if (this == Ty) return true;
- if ((!isPrimitiveType() && !isPointerType()) ||
- (!Ty->isPointerType() && !Ty->isPrimitiveType())) return false;
+ if ((!isPrimitiveType() && !isa<PointerType>(this)) ||
+ (!isa<PointerType>(Ty) && !Ty->isPrimitiveType())) return false;
if (getPrimitiveID() == Ty->getPrimitiveID())
return true; // Handles identity cast, and cast of differing pointer types
case Type::ULongTyID:
case Type::LongTyID:
case Type::PointerTyID:
- return Ty == Type::ULongTy || Ty == Type::LongTy ||
- Ty->getPrimitiveID() == Type::PointerTyID;
+ return Ty == Type::ULongTy || Ty == Type::LongTy || isa<PointerType>(Ty);
default:
return false; // Other types have no identity values
}
}
+// getPrimitiveSize - Return the basic size of this type if it is a primative
+// type. These are fixed by LLVM and are not target dependant. This will
+// return zero if the type does not have a size or is not a primitive type.
+//
+unsigned Type::getPrimitiveSize() const {
+ switch (getPrimitiveID()) {
+#define HANDLE_PRIM_TYPE(TY,SIZE) case TY##TyID: return SIZE;
+#include "llvm/Type.def"
+ default: return 0;
+ }
+}
+
bool StructType::indexValid(const Value *V) const {
if (!isa<Constant>(V)) return false;
// These classes are used to implement specialized behavior for each different
// type.
//
-class SignedIntType : public Type {
- int Size;
-public:
- SignedIntType(const string &Name, PrimitiveID id, int size) : Type(Name, id) {
- Size = size;
- }
+struct SignedIntType : public Type {
+ SignedIntType(const string &Name, PrimitiveID id) : Type(Name, id) {}
// isSigned - Return whether a numeric type is signed.
virtual bool isSigned() const { return 1; }
- // isIntegral - Equivalent to isSigned() || isUnsigned, but with only a single
+ // isInteger - Equivalent to isSigned() || isUnsigned, but with only a single
// virtual function invocation.
//
- virtual bool isIntegral() const { return 1; }
+ virtual bool isInteger() const { return 1; }
};
-class UnsignedIntType : public Type {
- uint64_t Size;
-public:
- UnsignedIntType(const string &N, PrimitiveID id, int size) : Type(N, id) {
- Size = size;
- }
+struct UnsignedIntType : public Type {
+ UnsignedIntType(const string &N, PrimitiveID id) : Type(N, id) {}
// isUnsigned - Return whether a numeric type is signed.
virtual bool isUnsigned() const { return 1; }
- // isIntegral - Equivalent to isSigned() || isUnsigned, but with only a single
+ // isInteger - Equivalent to isSigned() || isUnsigned, but with only a single
// virtual function invocation.
//
- virtual bool isIntegral() const { return 1; }
+ virtual bool isInteger() const { return 1; }
};
static struct TypeType : public Type {
Type *Type::VoidTy = new Type("void" , VoidTyID),
*Type::BoolTy = new Type("bool" , BoolTyID),
- *Type::SByteTy = new SignedIntType("sbyte" , SByteTyID, 1),
- *Type::UByteTy = new UnsignedIntType("ubyte" , UByteTyID, 1),
- *Type::ShortTy = new SignedIntType("short" , ShortTyID, 2),
- *Type::UShortTy = new UnsignedIntType("ushort", UShortTyID, 2),
- *Type::IntTy = new SignedIntType("int" , IntTyID, 4),
- *Type::UIntTy = new UnsignedIntType("uint" , UIntTyID, 4),
- *Type::LongTy = new SignedIntType("long" , LongTyID, 8),
- *Type::ULongTy = new UnsignedIntType("ulong" , ULongTyID, 8),
+ *Type::SByteTy = new SignedIntType("sbyte" , SByteTyID),
+ *Type::UByteTy = new UnsignedIntType("ubyte" , UByteTyID),
+ *Type::ShortTy = new SignedIntType("short" , ShortTyID),
+ *Type::UShortTy = new UnsignedIntType("ushort", UShortTyID),
+ *Type::IntTy = new SignedIntType("int" , IntTyID),
+ *Type::UIntTy = new UnsignedIntType("uint" , UIntTyID),
+ *Type::LongTy = new SignedIntType("long" , LongTyID),
+ *Type::ULongTy = new UnsignedIntType("ulong" , ULongTyID),
*Type::FloatTy = new Type("float" , FloatTyID),
*Type::DoubleTy = new Type("double", DoubleTyID),
*Type::TypeTy = &TheTypeType,
typedef map<ValType, PATypeHandle<TypeClass> > MapTy;
MapTy Map;
public:
-
~TypeMap() { print("ON EXIT"); }
inline TypeClass *get(const ValType &V) {
- map<ValType, PATypeHandle<TypeClass> >::iterator I = Map.find(V);
+ typename map<ValType, PATypeHandle<TypeClass> >::iterator I = Map.find(V);
// TODO: FIXME: When Types are not CONST.
return (I != Map.end()) ? (TypeClass*)I->second.get() : 0;
}
// structurally equivalent to the specified type.
//
inline const TypeClass *containsEquivalent(const TypeClass *Ty) {
- for (MapTy::iterator I = Map.begin(), E = Map.end(); I != E; ++I)
+ for (typename MapTy::iterator I = Map.begin(), E = Map.end(); I != E; ++I)
if (I->second.get() != Ty && TypesEqual(Ty, I->second.get()))
return (TypeClass*)I->second.get(); // FIXME TODO when types not const
return 0;
// corrected.
//
virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy) {
- if (OldTy == NewTy) {
- if (!OldTy->isAbstract()) {
- // Check to see if the type just became concrete.
- // If so, remove self from user list.
- for (MapTy::iterator I = Map.begin(), E = Map.end(); I != E; ++I)
- if (I->second == OldTy)
- I->second.removeUserFromConcrete();
- }
- return;
- }
#ifdef DEBUG_MERGE_TYPES
cerr << "Removing Old type from Tab: " << (void*)OldTy << ", "
<< OldTy->getDescription() << " replacement == " << (void*)NewTy
<< ", " << NewTy->getDescription() << endl;
#endif
- for (MapTy::iterator I = Map.begin(), E = Map.end(); I != E; ++I)
+ for (typename MapTy::iterator I = Map.begin(), E = Map.end(); I != E; ++I)
if (I->second == OldTy) {
- Map.erase(I);
- print("refineAbstractType after");
- return;
+ // Check to see if the type just became concrete. If so, remove self
+ // from user list.
+ I->second.removeUserFromConcrete();
+ I->second = cast<TypeClass>(NewTy);
}
- assert(0 && "Abstract type not found in table!");
}
void remove(const ValType &OldVal) {
- MapTy::iterator I = Map.find(OldVal);
+ typename MapTy::iterator I = Map.find(OldVal);
assert(I != Map.end() && "TypeMap::remove, element not found!");
Map.erase(I);
}
virtual void typeBecameConcrete(const DerivedType *Ty) = 0;
virtual void refineAbstractType(const DerivedType *OldTy, const Type *NewTy) {
- if (OldTy == NewTy) {
- if (!OldTy->isAbstract())
- typeBecameConcrete(OldTy);
- return;
- }
+ assert(OldTy == NewTy || OldTy->isAbstract());
+
+ if (!OldTy->isAbstract())
+ typeBecameConcrete(OldTy);
+
TypeMap<ValType, TypeClass> &Table = MyTable; // Copy MyTable reference
ValType Tmp(*(ValType*)this); // Copy this.
PATypeHandle<TypeClass> OldType(Table.get(*(ValType*)this), this);
Table.remove(*(ValType*)this); // Destroy's this!
-#if 1
+
// Refine temporary to new state...
- Tmp.doRefinement(OldTy, NewTy);
+ if (OldTy != NewTy)
+ Tmp.doRefinement(OldTy, NewTy);
+ // FIXME: when types are not const!
Table.add((ValType&)Tmp, (TypeClass*)OldType.get());
-#endif
}
void dump() const {
// Subclass should override this... to update self as usual
virtual void doRefinement(const DerivedType *OldType, const Type *NewType) {
if (RetTy == OldType) RetTy = NewType;
- for (unsigned i = 0; i < ArgTypes.size(); ++i)
+ for (unsigned i = 0, e = ArgTypes.size(); i != e; ++i)
if (ArgTypes[i] == OldType) ArgTypes[i] = NewType;
}
// Subclass should override this... to update self as usual
virtual void doRefinement(const DerivedType *OldType, const Type *NewType) {
- if (ValTy == OldType) ValTy = NewType;
+ assert(ValTy == OldType);
+ ValTy = NewType;
}
virtual void typeBecameConcrete(const DerivedType *Ty) {
StructValType(const vector<const Type*> &args,
TypeMap<StructValType, StructType> &Tab)
: ValTypeBase<StructValType, StructType>(Tab) {
- for (unsigned i = 0; i < args.size(); ++i)
+ ElTypes.reserve(args.size());
+ for (unsigned i = 0, e = args.size(); i != e; ++i)
ElTypes.push_back(PATypeHandle<Type>(args[i], this));
}
StructValType(const StructValType &SVT)
: ValTypeBase<StructValType, StructType>(SVT){
ElTypes.reserve(SVT.ElTypes.size());
- for (unsigned i = 0; i < SVT.ElTypes.size(); ++i)
+ for (unsigned i = 0, e = SVT.ElTypes.size(); i != e; ++i)
ElTypes.push_back(PATypeHandle<Type>(SVT.ElTypes[i], this));
}
}
virtual void typeBecameConcrete(const DerivedType *Ty) {
- for (unsigned i = 0; i < ElTypes.size(); ++i)
- if (ElTypes[i] == Ty) ElTypes[i].removeUserFromConcrete();
+ for (unsigned i = 0, e = ElTypes.size(); i != e; ++i)
+ if (ElTypes[i] == Ty)
+ ElTypes[i].removeUserFromConcrete();
}
inline bool operator<(const StructValType &STV) const {
// Subclass should override this... to update self as usual
virtual void doRefinement(const DerivedType *OldType, const Type *NewType) {
- if (ValTy == OldType) ValTy = NewType;
+ assert(ValTy == OldType);
+ ValTy = NewType;
}
virtual void typeBecameConcrete(const DerivedType *Ty) {
return PT;
}
+void debug_type_tables() {
+ FunctionTypes.dump();
+ ArrayTypes.dump();
+ StructTypes.dump();
+ PointerTypes.dump();
+}
//===----------------------------------------------------------------------===//
// Derived Type Refinement Functions
//===----------------------------------------------------------------------===//
+// addAbstractTypeUser - Notify an abstract type that there is a new user of
+// it. This function is called primarily by the PATypeHandle class.
+//
+void DerivedType::addAbstractTypeUser(AbstractTypeUser *U) const {
+ assert(isAbstract() && "addAbstractTypeUser: Current type not abstract!");
+
+#if DEBUG_MERGE_TYPES
+ cerr << " addAbstractTypeUser[" << (void*)this << ", " << getDescription()
+ << "][" << AbstractTypeUsers.size() << "] User = " << U << endl;
+#endif
+ AbstractTypeUsers.push_back(U);
+}
+
+
// removeAbstractTypeUser - Notify an abstract type that a user of the class
// no longer has a handle to the type. This function is called primarily by
// the PATypeHandle class. When there are no users of the abstract type, it
// front. Also, it is likely that there will be a stack like behavior to
// users that register and unregister users.
//
- for (unsigned i = AbstractTypeUsers.size(); i > 0; --i) {
- if (AbstractTypeUsers[i-1] == U) {
- AbstractTypeUsers.erase(AbstractTypeUsers.begin()+i-1);
+ unsigned i;
+ for (i = AbstractTypeUsers.size(); AbstractTypeUsers[i-1] != U; --i)
+ assert(i != 0 && "AbstractTypeUser not in user list!");
+
+ --i; // Convert to be in range 0 <= i < size()
+ assert(i < AbstractTypeUsers.size() && "Index out of range!"); // Wraparound?
+
+ AbstractTypeUsers.erase(AbstractTypeUsers.begin()+i);
#ifdef DEBUG_MERGE_TYPES
- cerr << " removeAbstractTypeUser<" << (void*)this << ", "
- << getDescription() << ">[" << i << "] User = " << U << endl;
+ cerr << " remAbstractTypeUser[" << (void*)this << ", "
+ << getDescription() << "][" << i << "] User = " << U << endl;
#endif
-
- if (AbstractTypeUsers.empty() && isAbstract()) {
+
+ if (AbstractTypeUsers.empty() && isAbstract()) {
#ifdef DEBUG_MERGE_TYPES
- cerr << "DELETEing unused abstract type: <" << getDescription()
- << ">[" << (void*)this << "]" << endl;
+ cerr << "DELETEing unused abstract type: <" << getDescription()
+ << ">[" << (void*)this << "]" << endl;
#endif
- delete this; // No users of this abstract type!
- }
- return;
- }
+ delete this; // No users of this abstract type!
}
- assert(0 && "AbstractTypeUser not in user list!");
}
unsigned NumSelfUses = 0;
// Iterate over all of the uses of this type, invoking callback. Each user
- // should remove itself from our use list automatically.
+ // should remove itself from our use list automatically. We have to check to
+ // make sure that NewTy doesn't _become_ 'this'. If it does, resolving types
+ // will not cause users to drop off of the use list. If we resolve to ourself
+ // we succeed!
//
- while (AbstractTypeUsers.size() > NumSelfUses) {
+ while (AbstractTypeUsers.size() > NumSelfUses && NewTy != this) {
AbstractTypeUser *User = AbstractTypeUsers.back();
if (User == this) {
} else {
unsigned OldSize = AbstractTypeUsers.size();
#ifdef DEBUG_MERGE_TYPES
- cerr << " REFINING user " << OldSize-1 << " of abstract type ["
+ cerr << " REFINING user " << OldSize-1 << "[" << (void*)User
+ << "] of abstract type ["
<< (void*)this << " " << getDescription() << "] to ["
<< (void*)NewTy.get() << " " << NewTy->getDescription() << "]!\n";
#endif
User->refineAbstractType(this, NewTy);
- if (AbstractTypeUsers.size() == OldSize)
+#ifdef DEBUG_MERGE_TYPES
+ if (AbstractTypeUsers.size() == OldSize) {
User->refineAbstractType(this, NewTy);
-
+ if (AbstractTypeUsers.back() != User)
+ cerr << "User changed!\n";
+ cerr << "Top of user list is:\n";
+ AbstractTypeUsers.back()->dump();
+
+ cerr <<"\nOld User=\n";
+ User->dump();
+ }
+#endif
assert(AbstractTypeUsers.size() != OldSize &&
"AbsTyUser did not remove self from user list!");
}
// Remove a single self use, even though there may be several here. This will
// probably 'delete this', so no instance variables may be used after this
// occurs...
- assert(AbstractTypeUsers.back() == this && "Only self uses should be left!");
+ //
+ assert((NewTy == this || AbstractTypeUsers.back() == this) &&
+ "Only self uses should be left!");
removeAbstractTypeUser(this);
}
++isRefining;
#ifdef DEBUG_MERGE_TYPES
- cerr << "typeIsREFINED type: " << (void*)this <<" "<<getDescription() << endl;
+ cerr << "typeIsREFINED type: " << (void*)this <<" "<<getDescription() << "\n";
#endif
- for (unsigned i = 0; i < AbstractTypeUsers.size(); ) {
- AbstractTypeUser *ATU = AbstractTypeUsers[i];
+
+ // In this loop we have to be very careful not to get into infinite loops and
+ // other problem cases. Specifically, we loop through all of the abstract
+ // type users in the user list, notifying them that the type has been refined.
+ // At their choice, they may or may not choose to remove themselves from the
+ // list of users. Regardless of whether they do or not, we have to be sure
+ // that we only notify each user exactly once. Because the refineAbstractType
+ // method can cause an arbitrary permutation to the user list, we cannot loop
+ // through it in any particular order and be guaranteed that we will be
+ // successful at this aim. Because of this, we keep track of all the users we
+ // have visited and only visit users we have not seen. Because this user list
+ // should be small, we use a vector instead of a full featured set to keep
+ // track of what users we have notified so far.
+ //
+ vector<AbstractTypeUser*> Refined;
+ while (1) {
+ unsigned i;
+ for (i = AbstractTypeUsers.size(); i != 0; --i)
+ if (find(Refined.begin(), Refined.end(), AbstractTypeUsers[i-1]) ==
+ Refined.end())
+ break; // Found an unrefined user?
+
+ if (i == 0) break; // Noone to refine left, break out of here!
+
+ AbstractTypeUser *ATU = AbstractTypeUsers[--i];
+ Refined.push_back(ATU); // Keep track of which users we have refined!
+
#ifdef DEBUG_MERGE_TYPES
- cerr << " typeIsREFINED user " << i << " of abstract type ["
+ cerr << " typeIsREFINED user " << i << "[" << ATU << "] of abstract type ["
<< (void*)this << " " << getDescription() << "]\n";
#endif
ATU->refineAbstractType(this, this);
-
- // If the user didn't remove itself from the list, continue...
- if (AbstractTypeUsers.size() > i && AbstractTypeUsers[i] == ATU) {
- ++i;
- }
}
--isRefining;
for (unsigned i = 0; i < AbstractTypeUsers.size(); ++i) {
if (AbstractTypeUsers[i] != this) {
// Debugging hook
- cerr << "FOUND FAILURE\n";
+ cerr << "FOUND FAILURE\nUser: ";
+ AbstractTypeUsers[i]->dump();
+ cerr << "\nCatch:\n";
AbstractTypeUsers[i]->refineAbstractType(this, this);
assert(0 && "Type became concrete,"
" but it still has abstract type users hanging around!");
<< OldType->getDescription() << "], " << (void*)NewType << " ["
<< NewType->getDescription() << "])\n";
#endif
-
- if (!OldType->isAbstract()) {
- if (ResultType == OldType) ResultType.removeUserFromConcrete();
- for (unsigned i = 0; i < ParamTys.size(); ++i)
- if (ParamTys[i] == OldType) ParamTys[i].removeUserFromConcrete();
- }
-
- if (OldType != NewType) {
- if (ResultType == OldType) ResultType = NewType;
-
- for (unsigned i = 0; i < ParamTys.size(); ++i)
- if (ParamTys[i] == OldType) ParamTys[i] = NewType;
+ // Find the type element we are refining...
+ if (ResultType == OldType) {
+ ResultType.removeUserFromConcrete();
+ ResultType = NewType;
}
+ for (unsigned i = 0, e = ParamTys.size(); i != e; ++i)
+ if (ParamTys[i] == OldType) {
+ ParamTys[i].removeUserFromConcrete();
+ ParamTys[i] = NewType;
+ }
const FunctionType *MT = FunctionTypes.containsEquivalent(this);
if (MT && MT != this) {
<< NewType->getDescription() << "])\n";
#endif
- if (!OldType->isAbstract()) {
- assert(getElementType() == OldType);
- ElementType.removeUserFromConcrete();
- }
-
+ assert(getElementType() == OldType);
+ ElementType.removeUserFromConcrete();
ElementType = NewType;
+
const ArrayType *AT = ArrayTypes.containsEquivalent(this);
if (AT && AT != this) {
refineAbstractTypeTo(AT); // Different type altogether...
<< OldType->getDescription() << "], " << (void*)NewType << " ["
<< NewType->getDescription() << "])\n";
#endif
- if (!OldType->isAbstract()) {
- for (unsigned i = 0; i < ETypes.size(); ++i)
- if (ETypes[i] == OldType)
- ETypes[i].removeUserFromConcrete();
- }
+ for (unsigned i = 0, e = ETypes.size(); i != e; ++i)
+ if (ETypes[i] == OldType) {
+ ETypes[i].removeUserFromConcrete();
- if (OldType != NewType) {
- // Update old type to new type in the array...
- for (unsigned i = 0; i < ETypes.size(); ++i)
- if (ETypes[i] == OldType)
- ETypes[i] = NewType;
- }
+ // Update old type to new type in the array...
+ ETypes[i] = NewType;
+ }
const StructType *ST = StructTypes.containsEquivalent(this);
if (ST && ST != this) {
<< NewType->getDescription() << "])\n";
#endif
- if (!OldType->isAbstract()) {
- assert(ElementType == OldType);
- ElementType.removeUserFromConcrete();
- }
-
+ assert(ElementType == OldType);
+ ElementType.removeUserFromConcrete();
ElementType = NewType;
- const PointerType *PT = PointerTypes.containsEquivalent(this);
+ const PointerType *PT = PointerTypes.containsEquivalent(this);
if (PT && PT != this) {
refineAbstractTypeTo(PT); // Different type altogether...
} else {
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