Add optimized ICs for new CanvasArray types. This is a follow-on CL to...

src/objects.cc

 // Copyright 2006-2009 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 7295 matching lines @@
 static Object* ExternalArrayIntSetter(ExternalArrayClass* receiver,
                                       uint32_t index,
                                       Object* value) {
   ValueType cast_value = 0;
   if (index < static_cast<uint32_t>(receiver->length())) {
     if (value->IsSmi()) {
       int int_value = Smi::cast(value)->value();
       cast_value = static_cast<ValueType>(int_value);
     } else if (value->IsHeapNumber()) {
       double double_value = HeapNumber::cast(value)->value();
-      cast_value = static_cast<ValueType>(double_value);
+      cast_value = static_cast<ValueType>(DoubleToInt32(double_value));
     } else {
       // Clamp undefined to zero (default). All other types have been
       // converted to a number type further up in the call chain.
       ASSERT(value->IsUndefined());
     }
     receiver->set(index, cast_value);
   } else {
     return Top::Throw(*Factory::NewIndexError(index));
   }
   return Heap::NumberFromInt32(cast_value);
@@ skipping 31 matching lines @@
 
 
 Object* ExternalUnsignedIntArray::SetValue(uint32_t index, Object* value) {
   uint32_t cast_value = 0;
   if (index < static_cast<uint32_t>(length())) {
     if (value->IsSmi()) {
       int int_value = Smi::cast(value)->value();
       cast_value = static_cast<uint32_t>(int_value);
     } else if (value->IsHeapNumber()) {
       double double_value = HeapNumber::cast(value)->value();
-      cast_value = static_cast<uint32_t>(double_value);
+      cast_value = static_cast<uint32_t>(DoubleToUint32(double_value));
     } else {
       // Clamp undefined to zero (default). All other types have been
       // converted to a number type further up in the call chain.
       ASSERT(value->IsUndefined());
     }
     set(index, cast_value);
   } else {
     return Top::Throw(*Factory::NewIndexError(index));
   }
   return Heap::NumberFromUint32(cast_value);
@@ skipping 933 matching lines @@
   if (break_point_objects()->IsUndefined()) return 0;
   // Single beak point.
   if (!break_point_objects()->IsFixedArray()) return 1;
   // Multiple break points.
   return FixedArray::cast(break_point_objects())->length();
 }
 #endif
 
 
 } }  // namespace v8::internal