From: Nick Lewycky <nicholas@mxc.ca>
Date: Tue, 12 Sep 2006 00:18:28 +0000 (+0000)
Subject: Add ability to remove nodes from DominatorTree, for when a BasicBlock
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=f19fb9b4f45acce221ba3c20f37d66ffc1735b54;p=oota-llvm.git

Add ability to remove nodes from DominatorTree, for when a BasicBlock
is being removed.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30270 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/llvm/Analysis/Dominators.h b/include/llvm/Analysis/Dominators.h
index 085225505e3..55650f40b55 100644
--- a/include/llvm/Analysis/Dominators.h
+++ b/include/llvm/Analysis/Dominators.h
@@ -399,6 +399,14 @@ public:
     N->setIDom(NewIDom);
   }
 
+  /// removeNode - Removes a node from the dominator tree.  Block must not
+  /// dominate any other blocks.  Invalidates any node pointing to removed
+  /// block.
+  void removeNode(BasicBlock *BB) {
+    assert(getNode(BB) && "Removing node that isn't in dominator tree.");
+    Nodes.erase(BB);
+  }
+
   /// print - Convert to human readable form
   ///
   virtual void print(std::ostream &OS, const Module* = 0) const;