+MachineBasicBlock::~MachineBasicBlock() {
+ LeakDetector::removeGarbageObject(this);
+}
+
+
+// MBBs start out as #-1. When a MBB is added to a MachineFunction, it
+// gets the next available unique MBB number. If it is removed from a
+// MachineFunction, it goes back to being #-1.
+void ilist_traits<MachineBasicBlock>::addNodeToList(MachineBasicBlock* N) {
+ assert(N->Parent == 0 && "machine instruction already in a basic block");
+ N->Parent = Parent;
+ N->Number = Parent->addToMBBNumbering(N);
+ LeakDetector::removeGarbageObject(N);
+}
+
+void ilist_traits<MachineBasicBlock>::removeNodeFromList(MachineBasicBlock* N) {
+ assert(N->Parent != 0 && "machine instruction not in a basic block");
+ N->Parent->removeFromMBBNumbering(N->Number);
+ N->Number = -1;
+ N->Parent = 0;
+ LeakDetector::addGarbageObject(N);
+}
+
+
+MachineInstr* ilist_traits<MachineInstr>::createSentinel() {
+ MachineInstr* dummy = new MachineInstr(0, 0);
+ LeakDetector::removeGarbageObject(dummy);
+ return dummy;
+}
+
+void ilist_traits<MachineInstr>::addNodeToList(MachineInstr* N) {
+ assert(N->parent == 0 && "machine instruction already in a basic block");
+ N->parent = parent;
+ LeakDetector::removeGarbageObject(N);
+}
+
+void ilist_traits<MachineInstr>::removeNodeFromList(MachineInstr* N) {
+ assert(N->parent != 0 && "machine instruction not in a basic block");
+ N->parent = 0;
+ LeakDetector::addGarbageObject(N);
+}
+
+void ilist_traits<MachineInstr>::transferNodesFromList(
+ iplist<MachineInstr, ilist_traits<MachineInstr> >& toList,
+ ilist_iterator<MachineInstr> first,
+ ilist_iterator<MachineInstr> last) {
+ if (parent != toList.parent)
+ for (; first != last; ++first)
+ first->parent = toList.parent;
+}