[turbofan] Introduce initial support for TypedArrays.

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/operator.h"
@@ skipping 89 matching lines @@
 
 bool operator==(ElementAccess const&, ElementAccess const&);
 bool operator!=(ElementAccess const&, ElementAccess const&);
 
 size_t hash_value(ElementAccess const&);
 
 std::ostream& operator<<(std::ostream&, ElementAccess const&);
 
 ElementAccess const& ElementAccessOf(const Operator* op) WARN_UNUSED_RESULT;
 
+ExternalArrayType ExternalArrayTypeOf(const Operator* op) WARN_UNUSED_RESULT;
+
 enum class CheckFloat64HoleMode : uint8_t {
   kNeverReturnHole,  // Never return the hole (deoptimize instead).
   kAllowReturnHole   // Allow to return the hole (signaling NaN).
 };
 
 size_t hash_value(CheckFloat64HoleMode);
 
 std::ostream& operator<<(std::ostream&, CheckFloat64HoleMode);
 
 CheckFloat64HoleMode CheckFloat64HoleModeOf(const Operator*) WARN_UNUSED_RESULT;
@@ skipping 192 matching lines @@
 
   const Operator* LoadField(FieldAccess const&);
   const Operator* StoreField(FieldAccess const&);
 
   // load-buffer buffer, offset, length
   const Operator* LoadBuffer(BufferAccess);
 
   // store-buffer buffer, offset, length, value
   const Operator* StoreBuffer(BufferAccess);
 
-  // load-element [base + index], length
+  // load-element [base + index]
   const Operator* LoadElement(ElementAccess const&);
 
-  // store-element [base + index], length, value
+  // store-element [base + index], value
   const Operator* StoreElement(ElementAccess const&);
 
+  // load-typed-element buffer, [base + external + index]
+  const Operator* LoadTypedElement(ExternalArrayType const&);
+
+  // store-typed-element buffer, [base + external + index], value
+  const Operator* StoreTypedElement(ExternalArrayType const&);
+
  private:
   Zone* zone() const { return zone_; }
 
   const SimplifiedOperatorGlobalCache& cache_;
   Zone* const zone_;
 
   DISALLOW_COPY_AND_ASSIGN(SimplifiedOperatorBuilder);
 };
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_COMPILER_SIMPLIFIED_OPERATOR_H_