Add PostDominatorTree::getDescendants.

This patch adds the counter-part to DominatorTree::getDescendants.
It also fixes a couple of comments I noticed out of date in the
DominatorTree class.

llvm-svn: 195778

2 files changed, 8 insertions, 2 deletions

diff --git a/llvm/include/llvm/Analysis/Dominators.h b/llvm/include/llvm/Analysis/Dominators.h
index 3aa0beb6bb1..e35e101de39 100644
--- a/llvm/include/llvm/Analysis/Dominators.h
+++ b/llvm/include/llvm/Analysis/Dominators.h
@@ -346,7 +346,7 @@ public:
   DomTreeNodeBase<NodeT> *getRootNode() { return RootNode; }
   const DomTreeNodeBase<NodeT> *getRootNode() const { return RootNode; }
 
-  /// Get all nodes dominated by R, including R itself. Return true on success.
+  /// Get all nodes dominated by R, including R itself.
   void getDescendants(NodeT *R, SmallVectorImpl<NodeT *> &Result) const {
     const DomTreeNodeBase<NodeT> *RN = getNode(R);
     SmallVector<const DomTreeNodeBase<NodeT> *, 8> WL;
@@ -769,7 +769,7 @@ public:
     return DT->getRootNode();
   }
 
-  /// Get all nodes dominated by R, including R itself. Return true on success.
+  /// Get all nodes dominated by R, including R itself.
   void getDescendants(BasicBlock *R,
                      SmallVectorImpl<BasicBlock *> &Result) const {
     DT->getDescendants(R, Result);
diff --git a/llvm/include/llvm/Analysis/PostDominators.h b/llvm/include/llvm/Analysis/PostDominators.h
index 88ebab4edec..c99ecb38c5d 100644
--- a/llvm/include/llvm/Analysis/PostDominators.h
+++ b/llvm/include/llvm/Analysis/PostDominators.h
@@ -79,6 +79,12 @@ struct PostDominatorTree : public FunctionPass {
     return DT->findNearestCommonDominator(A, B);
   }
 
+  /// Get all nodes post-dominated by R, including R itself.
+  void getDescendants(BasicBlock *R,
+                      SmallVectorImpl<BasicBlock *> &Result) const {
+    DT->getDescendants(R, Result);
+  }
+
   virtual void releaseMemory() {
     DT->releaseMemory();
   }