[turbofan] Don't treat the hole NaN as constant inside the compiler.

src/compiler/access-builder.cc

Index: src/compiler/access-builder.cc
diff --git a/src/compiler/access-builder.cc b/src/compiler/access-builder.cc
index f21e29ae9151918fb879f45b64254dcc7547c562..f7dbd54b5096dbf57a63efcbfa5e566c53494cab 100644
--- a/src/compiler/access-builder.cc
+++ b/src/compiler/access-builder.cc
@@ -15,6 +15,14 @@ namespace internal {
 namespace compiler {
 
 // static
+FieldAccess AccessBuilder::ForExternalDoubleValue() {
+  FieldAccess access = {kUntaggedBase,          0,
+                        MaybeHandle<Name>(),    Type::Number(),
+                        MachineType::Float64(), kNoWriteBarrier};
+  return access;
+}
+
+// static
 FieldAccess AccessBuilder::ForMap() {
   FieldAccess access = {
       kTaggedBase,           HeapObject::kMapOffset,   MaybeHandle<Name>(),