Force anything that #includes llvm/Transforms/Utils/UnifyFunctionExitNodes.h

to link in the implementation.  Thanks to Anton Korobeynikov for figuring out
what was going on here.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28660 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/Transforms/Utils/UnifyFunctionExitNodes.h b/include/llvm/Transforms/Utils/UnifyFunctionExitNodes.h
index 81c71fb..526851b 100644 (file)
--- a/include/llvm/Transforms/Utils/UnifyFunctionExitNodes.h
+++ b/include/llvm/Transforms/Utils/UnifyFunctionExitNodes.h
@@ -38,10 +38,16 @@ public:
   BasicBlock *getUnreachableBlock() const { return UnreachableBlock; }
 
   virtual bool runOnFunction(Function &F);
+  
+  // Force linking the impl of this class into anything that uses this header.
+  static int stub;
 };
 
 Pass *createUnifyFunctionExitNodesPass();
 
+static IncludeFile
+UNIFY_FUNCTION_EXIT_NODES_INCLUDE_FILE(&UnifyFunctionExitNodes::stub);
+
 } // End llvm namespace
 
 #endif

diff --git a/lib/Transforms/Utils/UnifyFunctionExitNodes.cpp b/lib/Transforms/Utils/UnifyFunctionExitNodes.cpp
index d3c7b32..fa4e386 100644 (file)
--- a/lib/Transforms/Utils/UnifyFunctionExitNodes.cpp
+++ b/lib/Transforms/Utils/UnifyFunctionExitNodes.cpp
@@ -25,6 +25,8 @@ using namespace llvm;
 static RegisterOpt<UnifyFunctionExitNodes>
 X("mergereturn", "Unify function exit nodes");
 
+int UnifyFunctionExitNodes::stub;
+
 Pass *llvm::createUnifyFunctionExitNodesPass() {
   return new UnifyFunctionExitNodes();
 }