Deletion barrier: Distinguish+verify field initialization in ia32 generated code.

runtime/vm/assembler_x64.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // NOLINT
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/assembler.h"
 #include "vm/cpu.h"
 #include "vm/heap.h"
@@ skipping 3077 matching lines @@
 #if defined(DEBUG)
   Label done;
   testq(value, Immediate(kHeapObjectTag));
   j(ZERO, &done);
   Stop("Smi expected");
   Bind(&done);
 #endif  // defined(DEBUG)
 }
 
 
-void Assembler::ZeroSmiField(const Address& dest) {
+void Assembler::ZeroInitSmiField(const Address& dest) {
   // TODO(koda): Add VerifySmi once we distinguish initalization.
   VerifyHeapWord(dest);
   Immediate zero(Smi::RawValue(0));
   movq(dest, zero);
   if (VerifiedMemory::enabled()) {
     Register temp = RCX;
     pushq(temp);
     leaq(temp, dest);
     movq(Address(temp, VerifiedMemory::offset()), zero);
     popq(temp);
@@ skipping 820 matching lines @@
 
 
 const char* Assembler::FpuRegisterName(FpuRegister reg) {
   ASSERT((0 <= reg) && (reg < kNumberOfXmmRegisters));
   return xmm_reg_names[reg];
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64