Removed flag optimize-constructed-arrays.

src/x64/lithium-codegen-x64.cc

 // Copyright 2013 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 3854 matching lines @@
                     CALL_AS_FUNCTION,
                     RDI_UNINITIALIZED);
 }
 
 
 void LCodeGen::DoCallNew(LCallNew* instr) {
   ASSERT(ToRegister(instr->constructor()).is(rdi));
   ASSERT(ToRegister(instr->result()).is(rax));
 
   __ Set(rax, instr->arity());
-  if (FLAG_optimize_constructed_arrays) {
-    // No cell in ebx for construct type feedback in optimized code
-    Handle<Object> undefined_value(isolate()->factory()->undefined_value());
-    __ Move(rbx, undefined_value);
-  }
+  // No cell in ebx for construct type feedback in optimized code
+  Handle<Object> undefined_value(isolate()->factory()->undefined_value());
+  __ Move(rbx, undefined_value);
   CallConstructStub stub(NO_CALL_FUNCTION_FLAGS);
   CallCode(stub.GetCode(isolate()), RelocInfo::CONSTRUCT_CALL, instr);
 }
 
 
 void LCodeGen::DoCallNewArray(LCallNewArray* instr) {
   ASSERT(ToRegister(instr->constructor()).is(rdi));
   ASSERT(ToRegister(instr->result()).is(rax));
-  ASSERT(FLAG_optimize_constructed_arrays);
 
   __ Set(rax, instr->arity());
   __ Move(rbx, instr->hydrogen()->property_cell());
   ElementsKind kind = instr->hydrogen()->elements_kind();
   bool disable_allocation_sites =
       (AllocationSiteInfo::GetMode(kind) == TRACK_ALLOCATION_SITE);
 
   if (instr->arity() == 0) {
     ArrayNoArgumentConstructorStub stub(kind, disable_allocation_sites);
     CallCode(stub.GetCode(isolate()), RelocInfo::CONSTRUCT_CALL, instr);
@@ skipping 1762 matching lines @@
                                FixedArray::kHeaderSize - kPointerSize));
   __ bind(&done);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_X64