Fix some null checks to actually test the part that needs checking.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36298 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/Analysis/Dominators.h b/include/llvm/Analysis/Dominators.h
index 1d7e2f3..45eed7f 100644 (file)
--- a/include/llvm/Analysis/Dominators.h
+++ b/include/llvm/Analysis/Dominators.h
@@ -323,16 +323,15 @@ public:
   
   /// Return the immediate dominator of A.
   BasicBlock *getIDom(BasicBlock *A) const {
-    if (!A) return 0;
-    
     ETNode *NodeA = getNode(A);
+    if (!NodeA) return 0;
     const ETNode *idom = NodeA->getFather();
     return idom ? idom->getData<BasicBlock>() : 0;
   }
   
   void getChildren(BasicBlock *A, std::vector<BasicBlock*>& children) const {
-    if (!A) return;
     ETNode *NodeA = getNode(A);
+    if (!NodeA) return;
     const ETNode* son = NodeA->getSon();
     
     if (!son) return;