Make default_parameter_values a ZoneGrowableArray instead of an array in new space

runtime/vm/flow_graph_compiler_x64.cc

 // Copyright (c) 2013, 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_X64.
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/flow_graph_compiler.h"
 
 #include "vm/ast_printer.h"
@@ skipping 855 matching lines @@
       // RAX is arg_pos as Smi.
       // Point to next named entry.
       __ AddImmediate(
           RDI, Immediate(ArgumentsDescriptor::named_entry_size()));
       __ negq(RAX);
       Address argument_addr(RBX, RAX, TIMES_4, 0);  // RAX is a negative Smi.
       __ movq(RAX, argument_addr);
       __ jmp(&assign_optional_parameter, Assembler::kNearJump);
       __ Bind(&load_default_value);
       // Load RAX 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().DefaultParameterAt(param_pos - num_fixed_params);
       __ LoadObject(RAX, value);
       __ Bind(&assign_optional_parameter);
       // Assign RAX 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;
       const Address param_addr(RBP, computed_param_pos * kWordSize);
       __ movq(param_addr, RAX);
     }
@@ skipping 13 matching lines @@
     __ SmiUntag(RCX);
     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(RCX, Immediate(param_pos));
       __ j(GREATER, &next_parameter, Assembler::kNearJump);
       // Load RAX with default argument.
-      const Object& value = Object::ZoneHandle(zone(),
-          parsed_function().default_parameter_values().At(i));
+      const Object& value = parsed_function().DefaultParameterAt(i);
       __ LoadObject(RAX, value);
       // Assign RAX 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;
       const Address param_addr(RBP, computed_param_pos * kWordSize);
       __ movq(param_addr, RAX);
       __ Bind(&next_parameter);
     }
@@ skipping 873 matching lines @@
   __ movups(reg, Address(RSP, 0));
   __ AddImmediate(RSP, Immediate(kFpuRegisterSize));
 }
 
 
 #undef __
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64