//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
BasicBlock::BasicBlock(const std::string &Name, Function *NewParent,
- BasicBlock *InsertBefore)
- : Value(Type::LabelTy, Value::BasicBlockVal), Parent(0) {
+ BasicBlock *InsertBefore, BasicBlock *Dest)
+ : User(Type::LabelTy, Value::BasicBlockVal, &unwindDest, 0), Parent(0) {
// Make sure that we get added to a function
LeakDetector::addGarbageObject(this);
}
setName(Name);
+ unwindDest.init(NULL, this);
+ setUnwindDest(Dest);
}
getParent()->getBasicBlockList().erase(this);
}
+const BasicBlock *BasicBlock::getUnwindDest() const {
+ return cast_or_null<const BasicBlock>(unwindDest.get());
+}
+
+BasicBlock *BasicBlock::getUnwindDest() {
+ return cast_or_null<BasicBlock>(unwindDest.get());
+}
+
+void BasicBlock::setUnwindDest(BasicBlock *dest) {
+ NumOperands = unwindDest ? 1 : 0;
+ unwindDest.set(dest);
+}
+
/// moveBefore - Unlink this basic block from its current function and
/// insert it into the function that MovePos lives in, right before MovePos.
void BasicBlock::moveBefore(BasicBlock *MovePos) {
}
void BasicBlock::dropAllReferences() {
+ setUnwindDest(NULL);
for(iterator I = begin(), E = end(); I != E; ++I)
I->dropAllReferences();
}
find(pred_begin(this), pred_end(this), Pred) != pred_end(this)) &&
"removePredecessor: BB is not a predecessor!");
+ if (Pred == getUnwindDest())
+ setUnwindDest(NULL);
+
if (InstList.empty()) return;
PHINode *APN = dyn_cast<PHINode>(&front());
if (!APN) return; // Quick exit.