[turbofan] Fix MachineOperatorReducer to use JSGraph as well.

src/compiler/pipeline.cc

Index: src/compiler/pipeline.cc
diff --git a/src/compiler/pipeline.cc b/src/compiler/pipeline.cc
index 1daf4177a5eb5c9b7e87f9c1793d3b0462b4d882..6a4ddfe8901e4b3613c995bc4155062c0420202c 100644
--- a/src/compiler/pipeline.cc
+++ b/src/compiler/pipeline.cc
@@ -257,7 +257,7 @@ Handle<Code> Pipeline::GenerateCode() {
       MachineOperatorBuilder machine(zone());
       SimplifiedOperatorReducer simple_reducer(&jsgraph, &machine);
       ChangeLowering lowering(&jsgraph, &linkage, &machine);
-      MachineOperatorReducer mach_reducer(&graph);
+      MachineOperatorReducer mach_reducer(&jsgraph);
       GraphReducer graph_reducer(&graph);
       // TODO(titzer): Figure out if we should run all reducers at once here.
       graph_reducer.AddReducer(&simple_reducer);