[turbofan] Utilize maps from field type tracking to eliminate map checks.

test/unittests/compiler/escape-analysis-unittest.cc

 // Copyright 2015 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/escape-analysis.h"
 #include "src/bit-vector.h"
 #include "src/compiler/escape-analysis-reducer.h"
 #include "src/compiler/graph-visualizer.h"
 #include "src/compiler/js-graph.h"
 #include "src/compiler/node-properties.h"
@@ skipping 130 matching lines @@
     return control_ = graph()->NewNode(common()->IfTrue(), control_);
   }
 
   Node* IfFalse() { return graph()->NewNode(common()->IfFalse(), control_); }
 
   Node* Merge2(Node* control1, Node* control2) {
     return control_ = graph()->NewNode(common()->Merge(2), control1, control2);
   }
 
   FieldAccess FieldAccessAtIndex(int offset) {
-    FieldAccess access = {kTaggedBase,
-                          offset,
-                          MaybeHandle<Name>(),
-                          Type::Any(),
-                          MachineType::AnyTagged(),
+    FieldAccess access = {kTaggedBase,         offset,
+                          MaybeHandle<Name>(), MaybeHandle<Map>(),
+                          Type::Any(),         MachineType::AnyTagged(),
                           kFullWriteBarrier};
     return access;
   }
 
   ElementAccess MakeElementAccess(int header_size) {
     ElementAccess access = {kTaggedBase, header_size, Type::Any(),
                             MachineType::AnyTagged(), kFullWriteBarrier};
     return access;
   }
 
@@ skipping 344 matching lines @@
   ASSERT_EQ(object1, NodeProperties::GetValueInput(object_state, 0));
   ASSERT_EQ(object_state, NodeProperties::GetValueInput(object_state, 1));
 
   Node* object_state2 = NodeProperties::GetValueInput(state_values1, 0);
   ASSERT_EQ(object_state, object_state2);
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8