relax some types

llvm-svn: 32980
diff --git a/llvm/lib/Transforms/Scalar/LowerGC.cpp b/llvm/lib/Transforms/Scalar/LowerGC.cpp
index e0d6933..fa06bd0 100644
--- a/llvm/lib/Transforms/Scalar/LowerGC.cpp
+++ b/llvm/lib/Transforms/Scalar/LowerGC.cpp
@@ -37,7 +37,7 @@
 
     /// GCRead/GCWrite - These are the functions provided by the garbage
     /// collector for read/write barriers.
-    Function *GCRead, *GCWrite;
+    Constant *GCRead, *GCWrite;
 
     /// RootChain - This is the global linked-list that contains the chain of GC
     /// roots.