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- Add methods to ImmediateDominators & DominatorTree to allow updates
- Make DominatorTree::Node not inherit from std::vector git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3939 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -186,6 +186,23 @@ void DominatorTreeBase::reset() {
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Nodes.clear();
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}
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void DominatorTreeBase::Node2::setIDom(Node2 *NewIDom) {
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assert(IDom && "No immediate dominator?");
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if (IDom != NewIDom) {
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std::vector<Node*>::iterator I =
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std::find(IDom->Children.begin(), IDom->Children.end(), this);
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assert(I != IDom->Children.end() &&
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"Not in immediate dominator children set!");
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// I am no longer your child...
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IDom->Children.erase(I);
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// Switch to new dominator
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IDom = NewIDom;
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IDom->Children.push_back(this);
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}
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}
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void DominatorTree::calculate(const DominatorSet &DS) {
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Nodes[Root] = new Node(Root, 0); // Add a node for the root...
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