Revert r153613 as it's causing large compile-time regressions on the nightly testers.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@153660 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/CGStmt.cpp b/lib/CodeGen/CGStmt.cpp
index 489386d..670167b 100644
--- a/lib/CodeGen/CGStmt.cpp
+++ b/lib/CodeGen/CGStmt.cpp
@@ -722,8 +722,7 @@
   if (RV.isScalar()) {
     Builder.CreateStore(RV.getScalarVal(), ReturnValue);
   } else if (RV.isAggregate()) {
-    EmitAggregateCopy(ReturnValue, RV.getAggregateAddr(), Ty,
-                      /*volatile*/ false, 0, /*destIsCompleteObject*/ true);
+    EmitAggregateCopy(ReturnValue, RV.getAggregateAddr(), Ty);
   } else {
     StoreComplexToAddr(RV.getComplexVal(), ReturnValue, false);
   }
@@ -770,8 +769,7 @@
     EmitAggExpr(RV, AggValueSlot::forAddr(ReturnValue, Alignment, Qualifiers(),
                                           AggValueSlot::IsDestructed,
                                           AggValueSlot::DoesNotNeedGCBarriers,
-                                          AggValueSlot::IsNotAliased,
-                                          AggValueSlot::IsCompleteObject));
+                                          AggValueSlot::IsNotAliased));
   }
 
   EmitBranchThroughCleanup(ReturnBlock);