Never hchange nan-hole to hole or hole to nan-hole.

src/arm/lithium-codegen-arm.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 4826 matching lines @@
   Label done;
   if (convert_hole) {
     DwVfpRegister input_reg = ToDoubleRegister(instr->value());
     __ VFPCompareAndSetFlags(input_reg, input_reg);
     __ b(vc, &no_special_nan_handling);
     __ VmovHigh(scratch, input_reg);
     __ cmp(scratch, Operand(kHoleNanUpper32));
     // If not the hole NaN, force the NaN to be canonical.
     __ VFPCanonicalizeNaN(input_reg, ne);
     __ b(ne, &no_special_nan_handling);
-    __ Move(reg, factory()->the_hole_value());
+    __ Move(reg, factory()->undefined_value());
     __ b(&done);
   }
 
   __ bind(&no_special_nan_handling);
   DeferredNumberTagD* deferred = new(zone()) DeferredNumberTagD(this, instr);
   if (FLAG_inline_new) {
     __ LoadRoot(scratch, Heap::kHeapNumberMapRootIndex);
     // We want the untagged address first for performance
     __ AllocateHeapNumber(reg, temp1, temp2, scratch, deferred->entry(),
                           DONT_TAG_RESULT);
@@ skipping 998 matching lines @@
   __ sub(scratch, result, Operand::PointerOffsetFromSmiKey(index));
   __ ldr(result, FieldMemOperand(scratch,
                                  FixedArray::kHeaderSize - kPointerSize));
   __ bind(&done);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal