Implement destructor for PostDominatorTree to eliminate a memory leak.

llvm-svn: 50607

llvm/include/llvm/Analysis/PostDominators.h

@@ -29,6 +29,8 @@ struct PostDominatorTree : public FunctionPass {
     DT = new DominatorTreeBase<BasicBlock>(true);
   }
 
+  ~PostDominatorTree();
+
   virtual bool runOnFunction(Function &F);
 
   virtual void getAnalysisUsage(AnalysisUsage &AU) const {

llvm/lib/Analysis/PostDominators.cpp

@@ -37,6 +37,11 @@ bool PostDominatorTree::runOnFunction(Function &F) {
   return false;
 }
 
+PostDominatorTree::~PostDominatorTree()
+{
+  delete DT;
+}
+
 //===----------------------------------------------------------------------===//
 //  PostDominanceFrontier Implementation
 //===----------------------------------------------------------------------===//