-BasicBlock::BasicBlock(const std::string &name, Method *Parent)
- : Value(Type::LabelTy, Value::BasicBlockVal, name), InstList(this, 0),
- machineInstrVec(new MachineCodeForBasicBlock) {
- if (Parent)
- Parent->getBasicBlocks().push_back(this);
+
+namespace {
+ /// DummyInst - An instance of this class is used to mark the end of the
+ /// instruction list. This is not a real instruction.
+ struct VISIBILITY_HIDDEN DummyInst : public Instruction {
+ // allocate space for exactly zero operands
+ void *operator new(size_t s) {
+ return User::operator new(s, 0);
+ }
+ DummyInst() : Instruction(Type::VoidTy, OtherOpsEnd, 0, 0) {
+ // This should not be garbage monitored.
+ LeakDetector::removeGarbageObject(this);
+ }
+
+ Instruction *clone() const {
+ assert(0 && "Cannot clone EOL");abort();
+ return 0;
+ }
+ const char *getOpcodeName() const { return "*end-of-list-inst*"; }
+
+ // Methods for support type inquiry through isa, cast, and dyn_cast...
+ static inline bool classof(const DummyInst *) { return true; }
+ static inline bool classof(const Instruction *I) {
+ return I->getOpcode() == OtherOpsEnd;
+ }
+ static inline bool classof(const Value *V) {
+ return isa<Instruction>(V) && classof(cast<Instruction>(V));
+ }
+ };
+}
+
+Instruction *ilist_traits<Instruction>::createSentinel() {
+ return new DummyInst();
+}
+iplist<Instruction> &ilist_traits<Instruction>::getList(BasicBlock *BB) {
+ return BB->getInstList();