Implement in-heap backing store for typed arrays.

src/ia32/lithium-ia32.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 1563 matching lines @@
     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)
 
   virtual void PrintDataTo(StringStream* stream) V8_OVERRIDE;
   uint32_t additional_index() const { return hydrogen()->index_offset(); }
   bool key_is_smi() {
     return hydrogen()->key()->representation().IsTagged();
   }
 };
 
 
 inline static bool ExternalArrayOpRequiresTemp(
     Representation key_representation,
     ElementsKind elements_kind) {
   // Operations that require the key to be divided by two to be converted into
   // an index cannot fold the scale operation into a load and need an extra
   // temp register to do the work.
   return key_representation.IsSmi() &&
       (elements_kind == EXTERNAL_BYTE_ELEMENTS ||
        elements_kind == EXTERNAL_UNSIGNED_BYTE_ELEMENTS ||
-       elements_kind == EXTERNAL_PIXEL_ELEMENTS);
+       elements_kind == EXTERNAL_PIXEL_ELEMENTS ||
+       elements_kind == UINT8_ELEMENTS ||
+       elements_kind == INT8_ELEMENTS ||
+       elements_kind == UINT8_CLAMPED_ELEMENTS);
 }
 
 
 class LLoadKeyedGeneric V8_FINAL : public LTemplateInstruction<1, 3, 0> {
  public:
   LLoadKeyedGeneric(LOperand* context, LOperand* obj, LOperand* key) {
     inputs_[0] = context;
     inputs_[1] = obj;
     inputs_[2] = key;
   }
@@ skipping 609 matching lines @@
 
 class LStoreKeyed V8_FINAL : public LTemplateInstruction<0, 3, 0> {
  public:
   LStoreKeyed(LOperand* obj, LOperand* key, LOperand* val) {
     inputs_[0] = obj;
     inputs_[1] = key;
     inputs_[2] = val;
   }
 
   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)
 
@@ skipping 606 matching lines @@
 
   DISALLOW_COPY_AND_ASSIGN(LChunkBuilder);
 };
 
 #undef DECLARE_HYDROGEN_ACCESSOR
 #undef DECLARE_CONCRETE_INSTRUCTION
 
 } }  // namespace v8::internal
 
 #endif  // V8_IA32_LITHIUM_IA32_H_