Implement target cache for constructor calls.

src/x64/full-codegen-x64.cc

 // Copyright 2011 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 2253 matching lines @@
   }
 
   // Call the construct call builtin that handles allocation and
   // constructor invocation.
   SetSourcePosition(expr->position());
 
   // Load function and argument count into rdi and rax.
   __ Set(rax, arg_count);
   __ movq(rdi, Operand(rsp, arg_count * kPointerSize));
 
-  Handle<Code> construct_builtin =
-      isolate()->builtins()->JSConstructCall();
-  __ Call(construct_builtin, RelocInfo::CONSTRUCT_CALL);
+  // Record call targets in unoptimized code, but not in the snapshot.
+  CallFunctionFlags flags;
+  if (!Serializer::enabled()) {
+    flags = RECORD_CALL_TARGET;
+    Handle<Object> uninitialized =
+        TypeFeedbackCells::UninitializedSentinel(isolate());
+    Handle<JSGlobalPropertyCell> cell =
+        isolate()->factory()->NewJSGlobalPropertyCell(uninitialized);
+    RecordTypeFeedbackCell(expr->id(), cell);
+    __ Move(rbx, cell);
+  } else {
+    flags = NO_CALL_FUNCTION_FLAGS;
+  }
+
+  CallConstructStub stub(flags);
+  __ Call(stub.GetCode(), RelocInfo::CONSTRUCT_CALL);
   context()->Plug(rax);
 }
 
 
 void FullCodeGenerator::EmitIsSmi(CallRuntime* expr) {
   ZoneList<Expression*>* args = expr->arguments();
   ASSERT(args->length() == 1);
 
   VisitForAccumulatorValue(args->at(0));
 
@@ skipping 2059 matching lines @@
   *context_length = 0;
   return previous_;
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64