diff --git a/include/llvm/Pass.h b/include/llvm/Pass.h
index a0fa060fbf9..9e43b5e0a3a 100644
--- a/include/llvm/Pass.h
+++ b/include/llvm/Pass.h
@@ -136,12 +136,7 @@ public:
   /// automatically as the transform is performed.
   ///
   template<typename AnalysisType>
-  AnalysisType *getAnalysisToUpdate() const {
-    assert(Resolver && "Pass not resident in a PassManager object!");
-    const PassInfo *PI = getClassPassInfo<AnalysisType>();
-    if (PI == 0) return 0;
-    return dynamic_cast<AnalysisType*>(Resolver->getAnalysisToUpdate(PI));
-  }
+  AnalysisType *getAnalysisToUpdate() const; // Defined in PassAnalysisSupport.h
 
   /// mustPreserveAnalysisID - This method serves the same function as
   /// getAnalysisToUpdate, but works if you just have an AnalysisID.  This
diff --git a/include/llvm/PassAnalysisSupport.h b/include/llvm/PassAnalysisSupport.h
index 97588c3ae34..d27d6696497 100644
--- a/include/llvm/PassAnalysisSupport.h
+++ b/include/llvm/PassAnalysisSupport.h
@@ -110,4 +110,20 @@ protected:
   void setAnalysisResolver(Pass *P, AnalysisResolver *AR);
 };
 
+/// getAnalysisToUpdate<AnalysisType>() - This function is used by subclasses
+/// to get to the analysis information that might be around that needs to be
+/// updated.  This is different than getAnalysis in that it can fail (ie the
+/// analysis results haven't been computed), so should only be used if you
+/// provide the capability to update an analysis that exists.  This method is
+/// often used by transformation APIs to update analysis results for a pass
+/// automatically as the transform is performed.
+///
+template<typename AnalysisType>
+AnalysisType *Pass::getAnalysisToUpdate() const {
+  assert(Resolver && "Pass not resident in a PassManager object!");
+  const PassInfo *PI = getClassPassInfo<AnalysisType>();
+  if (PI == 0) return 0;
+  return dynamic_cast<AnalysisType*>(Resolver->getAnalysisToUpdate(PI));
+}
+
 #endif