[turbofan] Inline the allocation fast path.

test/unittests/compiler/change-lowering-unittest.cc

Index: test/unittests/compiler/change-lowering-unittest.cc
diff --git a/test/unittests/compiler/change-lowering-unittest.cc b/test/unittests/compiler/change-lowering-unittest.cc
index 582ef0a1bb74c9ee286c6f648ccef052c71839c7..ee893bf5fd93190db646c504c8f032722deded43 100644
--- a/test/unittests/compiler/change-lowering-unittest.cc
+++ b/test/unittests/compiler/change-lowering-unittest.cc
@@ -38,11 +38,12 @@ class ChangeLoweringTest : public TypedGraphTest {
   }
 
   Reduction Reduce(Node* node) {
+    GraphReducer graph_reducer(zone(), graph());
     MachineOperatorBuilder machine(zone(), WordRepresentation());
     JSOperatorBuilder javascript(zone());
     JSGraph jsgraph(isolate(), graph(), common(), &javascript, nullptr,
                     &machine);
-    ChangeLowering reducer(&jsgraph);
+    ChangeLowering reducer(&graph_reducer, &jsgraph);
     return reducer.Reduce(node);
   }