Revert r110396 to fix buildbots.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@110410 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Transforms/IPO/ConstantMerge.cpp b/lib/Transforms/IPO/ConstantMerge.cpp
index 75282fa..5c6bc86 100644
--- a/lib/Transforms/IPO/ConstantMerge.cpp
+++ b/lib/Transforms/IPO/ConstantMerge.cpp
@@ -31,7 +31,7 @@
 namespace {
   struct ConstantMerge : public ModulePass {
     static char ID; // Pass identification, replacement for typeid
-    ConstantMerge() : ModulePass(ID) {}
+    ConstantMerge() : ModulePass(&ID) {}
 
     // run - For this pass, process all of the globals in the module,
     // eliminating duplicate constants.