[turbofan] Properly represent the float64 hole.

src/compiler/js-create-lowering.cc

Index: src/compiler/js-create-lowering.cc
diff --git a/src/compiler/js-create-lowering.cc b/src/compiler/js-create-lowering.cc
index 19418c7aad0660a841e0d65fbba74047ffa55d6f..432b5c620b5a15cc9559af1f9d7436ca39ffca8b 100644
--- a/src/compiler/js-create-lowering.cc
+++ b/src/compiler/js-create-lowering.cc
@@ -1103,17 +1103,7 @@ Node* JSCreateLowering::AllocateElements(Node* effect, Node* control,
   ElementAccess access = IsFastDoubleElementsKind(elements_kind)
                              ? AccessBuilder::ForFixedDoubleArrayElement()
                              : AccessBuilder::ForFixedArrayElement();
-  Node* value;
-  if (IsFastDoubleElementsKind(elements_kind)) {
-    // Load the hole NaN pattern from the canonical location.
-    value = effect = graph()->NewNode(
-        simplified()->LoadField(AccessBuilder::ForExternalDoubleValue()),
-        jsgraph()->ExternalConstant(
-            ExternalReference::address_of_the_hole_nan()),
-        effect, control);
-  } else {
-    value = jsgraph()->TheHoleConstant();
-  }
+  Node* value = jsgraph()->TheHoleConstant();
 
   // Actually allocate the backing store.
   AllocationBuilder a(jsgraph(), effect, control);
@@ -1261,18 +1251,9 @@ Node* JSCreateLowering::AllocateFastLiteralElements(
   if (elements_map->instance_type() == FIXED_DOUBLE_ARRAY_TYPE) {
     Handle<FixedDoubleArray> elements =
         Handle<FixedDoubleArray>::cast(boilerplate_elements);
-    Node* the_hole_value = nullptr;
     for (int i = 0; i < elements_length; ++i) {
       if (elements->is_the_hole(i)) {
-        if (the_hole_value == nullptr) {
-          // Load the hole NaN pattern from the canonical location.
-          the_hole_value = effect = graph()->NewNode(
-              simplified()->LoadField(AccessBuilder::ForExternalDoubleValue()),
-              jsgraph()->ExternalConstant(
-                  ExternalReference::address_of_the_hole_nan()),
-              effect, control);
-        }
-        elements_values[i] = the_hole_value;
+        elements_values[i] = jsgraph()->TheHoleConstant();
       } else {
         elements_values[i] = jsgraph()->Constant(elements->get_scalar(i));
       }