MIPS64: Implement optimization utilizing signaling NaN for holes in double arrays.

src/ic/mips64/ic-mips64.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 "src/v8.h"
 
 #if V8_TARGET_ARCH_MIPS64
 
 #include "src/codegen.h"
@@ skipping 658 matching lines @@
   __ lw(scratch_value, MemOperand(address));
   __ Branch(&fast_double_without_map_check, ne, scratch_value,
             Operand(kHoleNanUpper32));
   __ JumpIfDictionaryInPrototypeChain(receiver, elements_map, scratch_value,
                                       slow);
 
   __ bind(&fast_double_without_map_check);
   __ StoreNumberToDoubleElements(value, key,
                                  elements,  // Overwritten.
                                  a3,        // Scratch regs...
-                                 a4, a5, &transition_double_elements);
+                                 a4, &transition_double_elements);
   if (increment_length == kIncrementLength) {
     // Add 1 to receiver->length.
     __ Daddu(scratch_value, key, Operand(Smi::FromInt(1)));
     __ sd(scratch_value, FieldMemOperand(receiver, JSArray::kLengthOffset));
   }
   __ Ret();
 
   __ bind(&transition_smi_elements);
   // Transition the array appropriately depending on the value type.
   __ ld(a4, FieldMemOperand(value, HeapObject::kMapOffset));
@@ skipping 297 matching lines @@
     patcher.ChangeBranchCondition(ne);
   } else {
     DCHECK(Assembler::IsBne(branch_instr));
     patcher.ChangeBranchCondition(eq);
   }
 }
 }
 }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_MIPS64