[turbofan] Add BoundsCheckMode to ElementAccess.

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"
 #include "src/handles.h"
 
 namespace v8 {
 namespace internal {
 
 // Forward declarations.
 template <class>
 class TypeImpl;
 struct ZoneTypeConfig;
@@ skipping 19 matching lines @@
   BaseTaggedness base_is_tagged;  // specifies if the base pointer is tagged.
   int offset;                     // offset of the field, without tag.
   Handle<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; }
 };
 
 
+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.
 struct ElementAccess {
+  BoundsCheckMode bounds_check;   // specifies the bounds checking mode.
   BaseTaggedness base_is_tagged;  // specifies if the base pointer is tagged.
   int header_size;                // size of the header, without tag.
   Type* type;                     // type of the element.
   MachineType machine_type;       // machine type of the element.
 
   int tag() const { return base_is_tagged == kTaggedBase ? kHeapObjectTag : 0; }
 };
 
 bool operator==(ElementAccess const& lhs, ElementAccess const& rhs);
 bool operator!=(ElementAccess const& lhs, ElementAccess const& rhs);
@@ skipping 81 matching lines @@
   Zone* const zone_;
 
   DISALLOW_COPY_AND_ASSIGN(SimplifiedOperatorBuilder);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_SIMPLIFIED_OPERATOR_H_