implement some prototypes


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@23920 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/DataStructure/GraphChecker.cpp b/lib/Analysis/DataStructure/GraphChecker.cpp
index fa083d9..6f2befa 100644
--- a/lib/Analysis/DataStructure/GraphChecker.cpp
+++ b/lib/Analysis/DataStructure/GraphChecker.cpp
@@ -77,6 +77,11 @@
   RegisterAnalysis<DSGC> X("datastructure-gc", "DSA Graph Checking Pass");
 }
 
+FunctionPass *llvm::createDataStructureGraphCheckerPass() {
+  return new DSGC();
+}
+
+
 DSGC::DSGC() {
   if (!AbortIfAnyCollapsed && AbortIfCollapsed.empty() &&
       CheckFlags.empty() && AbortIfMerged.empty()) {