Revert of Remove ExternalArray, derived types, and element kinds

src/ppc/lithium-ppc.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_PPC_LITHIUM_PPC_H_
 #define V8_PPC_LITHIUM_PPC_H_
 
 #include "src/hydrogen.h"
 #include "src/lithium.h"
 #include "src/lithium-allocator.h"
@@ skipping 1569 matching lines @@
 class LLoadKeyed final : public LTemplateInstruction<1, 2, 0> {
  public:
   LLoadKeyed(LOperand* elements, LOperand* key) {
     inputs_[0] = elements;
     inputs_[1] = key;
   }
 
   LOperand* elements() { return inputs_[0]; }
   LOperand* key() { return inputs_[1]; }
   ElementsKind elements_kind() const { return hydrogen()->elements_kind(); }
+  bool is_external() const { return hydrogen()->is_external(); }
   bool is_fixed_typed_array() const {
     return hydrogen()->is_fixed_typed_array();
   }
+  bool is_typed_elements() const {
+    return is_external() || is_fixed_typed_array();
+  }
 
   DECLARE_CONCRETE_INSTRUCTION(LoadKeyed, "load-keyed")
   DECLARE_HYDROGEN_ACCESSOR(LoadKeyed)
 
   void PrintDataTo(StringStream* stream) override;
   uint32_t base_offset() const { return hydrogen()->base_offset(); }
 };
 
 
 class LLoadKeyedGeneric final : public LTemplateInstruction<1, 3, 1> {
@@ skipping 554 matching lines @@
 
 
 class LStoreKeyed final : public LTemplateInstruction<0, 3, 0> {
  public:
   LStoreKeyed(LOperand* object, LOperand* key, LOperand* value) {
     inputs_[0] = object;
     inputs_[1] = key;
     inputs_[2] = value;
   }
 
+  bool is_external() const { return hydrogen()->is_external(); }
   bool is_fixed_typed_array() const {
     return hydrogen()->is_fixed_typed_array();
   }
+  bool is_typed_elements() const {
+    return is_external() || is_fixed_typed_array();
+  }
   LOperand* elements() { return inputs_[0]; }
   LOperand* key() { return inputs_[1]; }
   LOperand* value() { return inputs_[2]; }
   ElementsKind elements_kind() const { return hydrogen()->elements_kind(); }
 
   DECLARE_CONCRETE_INSTRUCTION(StoreKeyed, "store-keyed")
   DECLARE_HYDROGEN_ACCESSOR(StoreKeyed)
 
   void PrintDataTo(StringStream* stream) override;
   bool NeedsCanonicalization() {
@@ skipping 618 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(LChunkBuilder);
 };
 
 #undef DECLARE_HYDROGEN_ACCESSOR
 #undef DECLARE_CONCRETE_INSTRUCTION
 }
 }  // namespace v8::internal
 
 #endif  // V8_PPC_LITHIUM_PPC_H_