ARM64: Use default-NaN mode to canonicalize NaNs.

src/arm64/lithium-codegen-arm64.cc

 // Copyright 2013 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 "v8.h"
 
 #include "arm64/lithium-codegen-arm64.h"
 #include "arm64/lithium-gap-resolver-arm64.h"
 #include "code-stubs.h"
 #include "stub-cache.h"
@@ skipping 5082 matching lines @@
   } else {
     store_base = ToRegister(instr->temp());
     Register key = ToRegister(instr->key());
     bool key_is_tagged = instr->hydrogen()->key()->representation().IsSmi();
     CalcKeyedArrayBaseRegister(store_base, elements, key, key_is_tagged,
                                instr->hydrogen()->elements_kind());
     offset = FixedDoubleArray::OffsetOfElementAt(instr->additional_index());
   }
 
   if (instr->NeedsCanonicalization()) {
-    DoubleRegister dbl_scratch = double_scratch();
-    __ Fmov(dbl_scratch,
-            FixedDoubleArray::canonical_not_the_hole_nan_as_double());
-    __ Fmaxnm(dbl_scratch, dbl_scratch, value);
-    __ Str(dbl_scratch, FieldMemOperand(store_base, offset));
+    __ CanonicalizeNaN(double_scratch(), value);
+    __ Str(double_scratch(), FieldMemOperand(store_base, offset));
   } else {
     __ Str(value, FieldMemOperand(store_base, offset));
   }
 }
 
 
 void LCodeGen::DoStoreKeyedFixed(LStoreKeyedFixed* instr) {
   Register value = ToRegister(instr->value());
   Register elements = ToRegister(instr->elements());
   Register scratch = no_reg;
@@ skipping 758 matching lines @@
   __ 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(deferred->exit());
   __ Bind(&done);
 }
 
 } }  // namespace v8::internal