CodeGeneration: Admit that we change the code.

No need to pretend anymore that we do not update the LLVM-IR.

llvm-svn: 131358
diff --git a/polly/lib/CodeGeneration.cpp b/polly/lib/CodeGeneration.cpp
index b83fabb..898540c 100644
--- a/polly/lib/CodeGeneration.cpp
+++ b/polly/lib/CodeGeneration.cpp
@@ -1470,7 +1470,7 @@
 
     mergeControlFlow(splitBlock, &builder);
 
-    return false;
+    return true;
   }
 
   virtual void printScop(raw_ostream &OS) const {