[turbofan] Fix lowering of typed loads/stores.

src/compiler/simplified-operator.h

 // 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.
 
 #ifndef V8_COMPILER_SIMPLIFIED_OPERATOR_H_
 #define V8_COMPILER_SIMPLIFIED_OPERATOR_H_
 
 #include <iosfwd>
 
 #include "src/compiler/machine-type.h"
@@ skipping 20 matching lines @@
 enum BaseTaggedness { kUntaggedBase, kTaggedBase };
 
 std::ostream& operator<<(std::ostream&, BaseTaggedness);
 
 // An access descriptor for loads/stores of fixed structures like field
 // accesses of heap objects. Accesses from either tagged or untagged base
 // pointers are supported; untagging is done automatically during lowering.
 struct FieldAccess {
   BaseTaggedness base_is_tagged;  // specifies if the base pointer is tagged.
   int offset;                     // offset of the field, without tag.
-  Handle<Name> name;              // debugging only.
+  MaybeHandle<Name> name;         // debugging only.
   Type* type;                     // type of the field.
   MachineType machine_type;       // machine type of the field.
 
   int tag() const { return base_is_tagged == kTaggedBase ? kHeapObjectTag : 0; }
 };
 
+bool operator==(FieldAccess const& lhs, FieldAccess const& rhs);
+bool operator!=(FieldAccess const& lhs, FieldAccess const& rhs);
+
+std::ostream& operator<<(std::ostream&, FieldAccess const&);
+
 
 enum BoundsCheckMode { kNoBoundsCheck, kTypedArrayBoundsCheck };
 
 std::ostream& operator<<(std::ostream&, BoundsCheckMode);
 
 
 // An access descriptor for loads/stores of indexed structures like characters
 // in strings or off-heap backing stores. Accesses from either tagged or
 // untagged base pointers are supported; untagging is done automatically during
 // lowering.
@@ skipping 93 matching lines @@
   Zone* const zone_;
 
   DISALLOW_COPY_AND_ASSIGN(SimplifiedOperatorBuilder);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_SIMPLIFIED_OPERATOR_H_