[turbofan] Embed the actual backing store address for typed loads/stores.

src/compiler/js-typed-lowering.cc

 // 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.
 
 #include "src/compiler/access-builder.h"
 #include "src/compiler/graph-inl.h"
 #include "src/compiler/js-builtin-reducer.h"
 #include "src/compiler/js-typed-lowering.h"
 #include "src/compiler/node-aux-data-inl.h"
 #include "src/compiler/node-properties-inl.h"
@@ skipping 525 matching lines @@
   //   a) The typed array or it's buffer is neutered.
   if (base_type->IsConstant() && key_type->Is(Type::Integral32()) &&
       base_type->AsConstant()->Value()->IsJSTypedArray()) {
     // JSLoadProperty(typed-array, int32)
     Handle<JSTypedArray> array =
         Handle<JSTypedArray>::cast(base_type->AsConstant()->Value());
     if (IsExternalArrayElementsKind(array->map()->elements_kind())) {
       ExternalArrayType type = array->type();
       uint32_t byte_length;
       if (array->byte_length()->ToUint32(&byte_length)) {
-        Node* elements = graph()->NewNode(
-            simplified()->LoadField(AccessBuilder::ForJSObjectElements()), base,
-            graph()->start());
-        Node* pointer = graph()->NewNode(
-            simplified()->LoadField(AccessBuilder::ForExternalArrayPointer()),
-            elements, elements);
+        Handle<ExternalArray> elements =
+            Handle<ExternalArray>::cast(handle(array->elements()));
+        Node* pointer = jsgraph()->IntPtrConstant(
+            bit_cast<intptr_t>(elements->external_pointer()));
         Node* length = jsgraph()->Uint32Constant(
             static_cast<uint32_t>(byte_length / array->element_size()));
         Node* effect = NodeProperties::GetEffectInput(node);
         Node* control = NodeProperties::GetControlInput(node);
         Node* load = graph()->NewNode(
             simplified()->LoadElement(
                 AccessBuilder::ForTypedArrayElement(type, true)),
             pointer, key, length, effect, control);
         return ReplaceEagerly(node, load);
       }
@@ skipping 13 matching lines @@
   //   a) The typed array or its buffer is neutered.
   if (key_type->Is(Type::Integral32()) && base_type->IsConstant() &&
       base_type->AsConstant()->Value()->IsJSTypedArray()) {
     // JSStoreProperty(typed-array, int32, value)
     Handle<JSTypedArray> array =
         Handle<JSTypedArray>::cast(base_type->AsConstant()->Value());
     if (IsExternalArrayElementsKind(array->map()->elements_kind())) {
       ExternalArrayType type = array->type();
       uint32_t byte_length;
       if (array->byte_length()->ToUint32(&byte_length)) {
-        Node* elements = graph()->NewNode(
-            simplified()->LoadField(AccessBuilder::ForJSObjectElements()), base,
-            graph()->start());
-        Node* pointer = graph()->NewNode(
-            simplified()->LoadField(AccessBuilder::ForExternalArrayPointer()),
-            elements, elements);
+        Handle<ExternalArray> elements =
+            Handle<ExternalArray>::cast(handle(array->elements()));
+        Node* pointer = jsgraph()->IntPtrConstant(
+            bit_cast<intptr_t>(elements->external_pointer()));
         Node* length = jsgraph()->Uint32Constant(
             static_cast<uint32_t>(byte_length / array->element_size()));
         Node* effect = NodeProperties::GetEffectInput(node);
         Node* control = NodeProperties::GetControlInput(node);
         Node* store = graph()->NewNode(
             simplified()->StoreElement(
                 AccessBuilder::ForTypedArrayElement(type, true)),
             pointer, key, length, value, effect, control);
         return ReplaceEagerly(node, store);
       }
@@ skipping 94 matching lines @@
       return JSBuiltinReducer(jsgraph()).Reduce(node);
     default:
       break;
   }
   return NoChange();
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8