[Turbofan]: Use new MachineTypes in access-builder.

src/compiler/simplified-operator-reducer.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 "src/compiler/simplified-operator-reducer.h"
 
 #include "src/compiler/js-graph.h"
 #include "src/compiler/machine-operator.h"
 #include "src/compiler/node-matchers.h"
 #include "src/compiler/operator-properties.h"
@@ skipping 49 matching lines @@
       if (m.HasValue()) return ReplaceInt32(m.Value()->BooleanValue());
       if (m.IsChangeBitToTagged()) return Replace(m.InputAt(0));
       break;
     }
     case IrOpcode::kChangeFloat64ToTagged: {
       Float64Matcher m(node->InputAt(0));
       if (m.HasValue()) return ReplaceNumber(m.Value());
       if (m.IsChangeTaggedToFloat64()) return Replace(m.node()->InputAt(0));
       break;
     }
-    case IrOpcode::kChangeInt31ToTaggedSigned:
+    case IrOpcode::kChangeInt31ToTaggedSigned: {
+      Int32Matcher m(node->InputAt(0));

[Michael Starzinger, 2016/08/22 12:59:46]

nit: Seems like a copy of the below, why the expansion?

[mvstanton, 2016/08/24 16:06:28]

Done.

+      if (m.HasValue()) return ReplaceNumber(m.Value());
+      if (m.IsChangeTaggedToInt32() || m.IsChangeTaggedSignedToInt32()) {
+        return Replace(m.InputAt(0));
+      }
+      break;
+    }
     case IrOpcode::kChangeInt32ToTagged: {
       Int32Matcher m(node->InputAt(0));
       if (m.HasValue()) return ReplaceNumber(m.Value());
       if (m.IsChangeTaggedToInt32() || m.IsChangeTaggedSignedToInt32()) {
         return Replace(m.InputAt(0));
       }
       break;
     }
     case IrOpcode::kChangeTaggedToFloat64:
     case IrOpcode::kTruncateTaggedToFloat64: {
@@ skipping 152 matching lines @@
   return jsgraph()->isolate();
 }
 
 MachineOperatorBuilder* SimplifiedOperatorReducer::machine() const {
   return jsgraph()->machine();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8