Allocation Info Tracking, continued.

src/hydrogen.cc

 // 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 8320 matching lines @@
     HInstruction* call = PreProcessCall(
         new(zone()) HCallNew(context, function, argument_count));
     call->set_position(expr->position());
     return ast_context()->ReturnInstruction(call, expr->id());
   } else {
     // The constructor function is both an operand to the instruction and an
     // argument to the construct call.
     CHECK_ALIVE(VisitArgument(expr->expression()));
     HValue* constructor = HPushArgument::cast(Top())->argument();
     CHECK_ALIVE(VisitArgumentList(expr->arguments()));
-    HInstruction* call =
-        new(zone()) HCallNew(context, constructor, argument_count);
+    HCallNew* call;
+    if (!(expr->target().is_null()) &&
+        *(expr->target()) == isolate()->global_context()->array_function()) {
+      Handle<Object> feedback = oracle()->GetInfo(expr->CallNewFeedbackId());
+      ASSERT(feedback->IsSmi());
+      Handle<JSGlobalPropertyCell> cell =
+          isolate()->factory()->NewJSGlobalPropertyCell(feedback);
+      AddInstruction(new(zone()) HCheckFunction(constructor,
+          Handle<JSFunction>(isolate()->global_context()->array_function())));
+      call = new(zone()) HCallNewArray(context, constructor, argument_count,
+                                       cell);
+    } else {
+      call = new(zone()) HCallNew(context, constructor, argument_count);
+    }
     Drop(argument_count);
     call->set_position(expr->position());
     return ast_context()->ReturnInstruction(call, expr->id());
   }
 }
 
 
 // Support for generating inlined runtime functions.
 
 // Lookup table for generators for runtime calls that are generated inline.
@@ skipping 2278 matching lines @@
     }
   }
 
 #ifdef DEBUG
   if (graph_ != NULL) graph_->Verify(false);  // No full verify.
   if (allocator_ != NULL) allocator_->Verify();
 #endif
 }
 
 } }  // namespace v8::internal