A64: ElementsKind TODOs

src/a64/lithium-codegen-a64.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 2517 matching lines @@
     ASSERT(result.is(cp));
   }
 }
 
 
 void LCodeGen::DoCheckValue(LCheckValue* instr) {
   Register reg = ToRegister(instr->value());
   Handle<HeapObject> object = instr->hydrogen()->object().handle();
   AllowDeferredHandleDereference smi_check;
   if (isolate()->heap()->InNewSpace(*object)) {
-    Register temp = ToRegister(instr->temp());
+    UseScratchRegisterScope temps(masm());
+    Register temp = temps.AcquireX();
     Handle<Cell> cell = isolate()->factory()->NewCell(object);
     __ Mov(temp, Operand(Handle<Object>(cell)));
     __ Ldr(temp, FieldMemOperand(temp, Cell::kValueOffset));
     __ Cmp(reg, temp);
   } else {
     __ Cmp(reg, Operand(object));
   }
   DeoptimizeIf(ne, instr->environment());
 }
 
@@ skipping 3287 matching lines @@
   __ Bind(&out_of_object);
   __ Ldr(result, FieldMemOperand(object, JSObject::kPropertiesOffset));
   // Index is equal to negated out of object property index plus 1.
   __ Sub(result, result, Operand::UntagSmiAndScale(index, kPointerSizeLog2));
   __ Ldr(result, FieldMemOperand(result,
                                  FixedArray::kHeaderSize - kPointerSize));
   __ Bind(&done);
 }
 
 } }  // namespace v8::internal