Inherit CallGraphSCCPass directly from Pass.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33514 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Transforms/IPO/ArgumentPromotion.cpp

@@ -72,7 +72,7 @@ namespace {
                                "Promote 'by reference' arguments to scalars");
 }
 
-ModulePass *llvm::createArgumentPromotionPass() {
+Pass *llvm::createArgumentPromotionPass() {
   return new ArgPromotion();
 }