Implement in-heap backing store for typed arrays.

src/objects-debug.cc

Index: src/objects-debug.cc
diff --git a/src/objects-debug.cc b/src/objects-debug.cc
index ed93e1dc9e188ae1beea1f8114cecdf6642f468d..414f2bcf1a66e51f3de3319af278ed4fa18cbac6 100644
--- a/src/objects-debug.cc
+++ b/src/objects-debug.cc
@@ -132,6 +132,33 @@ void HeapObject::HeapObjectVerify() {
     case EXTERNAL_DOUBLE_ARRAY_TYPE:
       ExternalDoubleArray::cast(this)->ExternalDoubleArrayVerify();
       break;
+    case FIXED_UINT8_ARRAY_TYPE:
+      FixedUint8Array::cast(this)->FixedTypedArrayVerify();
+      break;
+    case FIXED_INT8_ARRAY_TYPE:
+      FixedInt8Array::cast(this)->FixedTypedArrayVerify();
+      break;
+    case FIXED_UINT16_ARRAY_TYPE:
+      FixedUint16Array::cast(this)->FixedTypedArrayVerify();
+      break;
+    case FIXED_INT16_ARRAY_TYPE:
+      FixedInt16Array::cast(this)->FixedTypedArrayVerify();
+      break;
+    case FIXED_UINT32_ARRAY_TYPE:
+      FixedUint32Array::cast(this)->FixedTypedArrayVerify();
+      break;
+    case FIXED_INT32_ARRAY_TYPE:
+      FixedInt32Array::cast(this)->FixedTypedArrayVerify();
+      break;
+    case FIXED_FLOAT32_ARRAY_TYPE:
+      FixedFloat32Array::cast(this)->FixedTypedArrayVerify();
+      break;
+    case FIXED_FLOAT64_ARRAY_TYPE:
+      FixedFloat64Array::cast(this)->FixedTypedArrayVerify();
+      break;
+    case FIXED_UINT8_CLAMPED_ARRAY_TYPE:
+      FixedUint8ClampedArray::cast(this)->FixedTypedArrayVerify();
+      break;
     case CODE_TYPE:
       Code::cast(this)->CodeVerify();
       break;
@@ -307,6 +334,14 @@ void ExternalDoubleArray::ExternalDoubleArrayVerify() {
 }
 
 
+template <class Traits>
+void FixedTypedArray<Traits>::FixedTypedArrayVerify() {
+  CHECK(IsHeapObject() &&
+        HeapObject::cast(this)->map()->instance_type() ==
+            Traits::kInstanceType);
+}
+
+
 bool JSObject::ElementsAreSafeToExamine() {
   return (FLAG_use_gvn && FLAG_use_allocation_folding) ||
       reinterpret_cast<Map*>(elements()) !=
@@ -1087,9 +1122,18 @@ void JSObject::IncrementSpillStatistics(SpillInformation* info) {
     case EXTERNAL_UNSIGNED_INT_ELEMENTS:
     case EXTERNAL_FLOAT_ELEMENTS:
     case EXTERNAL_DOUBLE_ELEMENTS:
-    case EXTERNAL_PIXEL_ELEMENTS: {
+    case EXTERNAL_PIXEL_ELEMENTS:
+    case UINT8_ELEMENTS:
+    case INT8_ELEMENTS:
+    case UINT16_ELEMENTS:
+    case INT16_ELEMENTS:
+    case UINT32_ELEMENTS:
+    case INT32_ELEMENTS:
+    case FLOAT32_ELEMENTS:
+    case FLOAT64_ELEMENTS:
+    case UINT8_CLAMPED_ELEMENTS: {
       info->number_of_objects_with_fast_elements_++;
-      ExternalPixelArray* e = ExternalPixelArray::cast(elements());
+      FixedArrayBase* e = FixedArrayBase::cast(elements());
       info->number_of_fast_used_elements_ += e->length();
       break;
     }