[turbofan] Store nodes use only MachineRepresentation, not MachineType.

test/cctest/compiler/test-changes-lowering.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <limits>
 
 #include "src/ast/scopes.h"
 #include "src/compiler/change-lowering.h"
 #include "src/compiler/control-builders.h"
 #include "src/compiler/js-graph.h"
@@ skipping 187 matching lines @@
     }
 }
 
 
 TEST(RunChangeTaggedToFloat64) {
   ChangesLoweringTester<int32_t> t(MachineType::AnyTagged());
   double result;
 
   t.BuildStoreAndLower(t.simplified()->ChangeTaggedToFloat64(),
                        t.machine()->Store(StoreRepresentation(
-                           MachineType::Float64(), kNoWriteBarrier)),
+                           MachineRepresentation::kFloat64, kNoWriteBarrier)),
                        &result);
 
   {
     FOR_INT32_INPUTS(i) {
       int32_t input = *i;
 
       if (Smi::IsValid(input)) {
         t.Call(Smi::FromInt(input));
         CHECK_EQ(input, static_cast<int32_t>(result));
       }
@@ skipping 62 matching lines @@
   {
     Object* result = t.Call(0);
     Object* false_obj = t.heap()->false_value();
     CHECK_EQ(false_obj, result);
   }
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8