[turbofan] Machine operators are globally shared singletons.

test/cctest/compiler/test-machine-operator-reducer.cc

Index: test/cctest/compiler/test-machine-operator-reducer.cc
diff --git a/test/cctest/compiler/test-machine-operator-reducer.cc b/test/cctest/compiler/test-machine-operator-reducer.cc
index 45b63b15843f5bdc33a9b1cb2bda30a83a1fbcad..569fe87f583a12b6f811cf3b8bdb3431b85fe44a 100644
--- a/test/cctest/compiler/test-machine-operator-reducer.cc
+++ b/test/cctest/compiler/test-machine-operator-reducer.cc
@@ -53,7 +53,6 @@ class ReducerTester : public HandleAndZoneScope {
       : isolate(main_isolate()),
         binop(NULL),
         unop(NULL),
-        machine(main_zone()),
         common(main_zone()),
         graph(main_zone()),
         typer(main_zone()),
@@ -667,8 +666,9 @@ TEST(ReduceLoadStore) {
   }
 
   {
-    Node* store = R.graph.NewNode(R.machine.Store(kMachInt32, kNoWriteBarrier),
-                                  base, index, load);
+    Node* store = R.graph.NewNode(
+        R.machine.Store(StoreRepresentation(kMachInt32, kNoWriteBarrier)), base,
+        index, load);
     MachineOperatorReducer reducer(&R.jsgraph);
     Reduction reduction = reducer.Reduce(store);
     CHECK(!reduction.Changed());  // stores should not be reduced.