Make default_parameter_values a ZoneGrowableArray instead of an array in new space

runtime/vm/flow_graph_compiler_arm64.cc

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_ARM64.
 #if defined(TARGET_ARCH_ARM64)
 
 #include "vm/flow_graph_compiler.h"
 
 #include "vm/ast_printer.h"
@@ skipping 843 matching lines @@
       // R5 is arg_pos as Smi.
       // Point to next named entry.
       __ add(R6, R6, Operand(ArgumentsDescriptor::named_entry_size()));
       // Negate and untag R5 so we can use in scaled address mode.
       __ subs(R5, ZR, Operand(R5, ASR, 1));
       Address argument_addr(R7, R5, UXTX, Address::Scaled);  // R5 is untagged.
       __ ldr(R5, argument_addr);
       __ b(&assign_optional_parameter);
       __ Bind(&load_default_value);
       // Load R5 with default argument.
-      const Object& value = Object::ZoneHandle(
-          zone(), parsed_function().default_parameter_values().At(
-              param_pos - num_fixed_params));
+      const Instance& value = parsed_function().DefaultParameterValueAt(
+          param_pos - num_fixed_params);
       __ LoadObject(R5, value);
       __ Bind(&assign_optional_parameter);
       // Assign R5 to fp[kFirstLocalSlotFromFp - param_pos].
       // We do not use the final allocation index of the variable here, i.e.
       // scope->VariableAt(i)->index(), because captured variables still need
       // to be copied to the context that is not yet allocated.
       const intptr_t computed_param_pos = kFirstLocalSlotFromFp - param_pos;
       __ StoreToOffset(R5, FP, computed_param_pos * kWordSize);
     }
     delete[] opt_param;
@@ skipping 12 matching lines @@
     __ SmiUntag(R8);
     for (int i = 0; i < num_opt_pos_params; i++) {
       Label next_parameter;
       // Handle this optional positional parameter only if k or fewer positional
       // arguments have been passed, where k is param_pos, the position of this
       // optional parameter in the formal parameter list.
       const int param_pos = num_fixed_params + i;
       __ CompareImmediate(R8, param_pos);
       __ b(&next_parameter, GT);
       // Load R5 with default argument.
-      const Object& value = Object::ZoneHandle(
-          zone(), parsed_function().default_parameter_values().At(i));
+      const Object& value = parsed_function().DefaultParameterValueAt(i);
       __ LoadObject(R5, value);
       // Assign R5 to fp[kFirstLocalSlotFromFp - param_pos].
       // We do not use the final allocation index of the variable here, i.e.
       // scope->VariableAt(i)->index(), because captured variables still need
       // to be copied to the context that is not yet allocated.
       const intptr_t computed_param_pos = kFirstLocalSlotFromFp - param_pos;
       __ StoreToOffset(R5, FP, computed_param_pos * kWordSize);
       __ Bind(&next_parameter);
     }
     if (check_correct_named_args) {
@@ skipping 929 matching lines @@
 void ParallelMoveResolver::RestoreFpuScratch(FpuRegister reg) {
   __ PopDouble(reg);
 }
 
 
 #undef __
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM64