[turbofan] Make FieldAccess::name usable in practice.

src/compiler/js-native-context-specialization.cc

Index: src/compiler/js-native-context-specialization.cc
diff --git a/src/compiler/js-native-context-specialization.cc b/src/compiler/js-native-context-specialization.cc
index 6280c81f386b41260562558a8cbc501e84760bea..ebe80c9bb91de1895356f0e13bfcf85821e053c9 100644
--- a/src/compiler/js-native-context-specialization.cc
+++ b/src/compiler/js-native-context-specialization.cc
@@ -253,7 +253,9 @@ Reduction JSNativeContextSpecialization::ReduceNamedAccess(
             simplified()->LoadField(AccessBuilder::ForJSObjectProperties()),
             this_storage, this_effect, this_control);
       }
-      FieldAccess field_access = {kTaggedBase, field_index.offset(), name,
+      const char* field_name =
+          AccessBuilder::GetNameForTracing(name, graph()->zone());
+      FieldAccess field_access = {kTaggedBase, field_index.offset(), field_name,
                                   field_type, MachineType::AnyTagged()};
       if (access_mode == AccessMode::kLoad) {
         if (field_type->Is(Type::UntaggedFloat64())) {
@@ -263,7 +265,7 @@ Reduction JSNativeContextSpecialization::ReduceNamedAccess(
                 graph()->NewNode(simplified()->LoadField(field_access),
                                  this_storage, this_effect, this_control);
             field_access.offset = HeapNumber::kValueOffset;
-            field_access.name = MaybeHandle<Name>();
+            field_access.name = "HeapNumber::value";
           }
           field_access.machine_type = MachineType::Float64();
         }
@@ -308,7 +310,7 @@ Reduction JSNativeContextSpecialization::ReduceNamedAccess(
                   graph()->NewNode(simplified()->LoadField(field_access),
                                    this_storage, this_effect, this_control);
               field_access.offset = HeapNumber::kValueOffset;
-              field_access.name = MaybeHandle<Name>();
+              field_access.name = "HeapNumber::value";
               field_access.machine_type = MachineType::Float64();
             }
           } else {