Avoid HeapObject check in HStoreNamedField.

src/arm/macro-assembler-arm.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <limits.h>  // For LONG_MIN, LONG_MAX.
 
 #include "v8.h"
 
 #if V8_TARGET_ARCH_ARM
 
@@ skipping 383 matching lines @@
 
 void MacroAssembler::Store(Register src,
                            const MemOperand& dst,
                            Representation r) {
   ASSERT(!r.IsDouble());
   if (r.IsInteger8() || r.IsUInteger8()) {
     strb(src, dst);
   } else if (r.IsInteger16() || r.IsUInteger16()) {
     strh(src, dst);
   } else {
+    if (r.IsHeapObject()) {
+      AssertNotSmi(src);
+    } else if (r.IsSmi()) {
+      AssertSmi(src);
+    }
     str(src, dst);
   }
 }
 
 
 void MacroAssembler::LoadRoot(Register destination,
                               Heap::RootListIndex index,
                               Condition cond) {
   if (CpuFeatures::IsSupported(MOVW_MOVT_IMMEDIATE_LOADS) &&
       isolate()->heap()->RootCanBeTreatedAsConstant(index) &&
@@ skipping 3624 matching lines @@
     sub(result, result, Operand(dividend));
   }
   if (ms.shift() > 0) mov(result, Operand(result, ASR, ms.shift()));
   add(result, result, Operand(dividend, LSR, 31));
 }
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM