Cleanup access to guarded_fields

runtime/vm/compiler.cc

 // Copyright (c) 2012, 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/compiler.h"
 
 #include "vm/assembler.h"
 
 #include "vm/ast_printer.h"
 #include "vm/block_scheduler.h"
@@ skipping 471 matching lines @@
       bool code_is_valid = true;
       if (!thread()->cha()->leaf_classes().is_empty()) {
         if (cha_invalidation_gen_at_start() !=
             isolate()->cha_invalidation_gen()) {
           code_is_valid = false;
           if (trace_compiler) {
             THR_Print("--> FAIL: CHA invalidation.");
           }
         }
       }
-      if (!flow_graph->guarded_fields()->is_empty()) {
+      if (!flow_graph->parsed_function().guarded_fields()->is_empty()) {
         if (field_invalidation_gen_at_start() !=
             isolate()->field_invalidation_gen()) {
           code_is_valid = false;
           if (trace_compiler) {
             THR_Print("--> FAIL: Field invalidation.");
           }
         }
       }
       if (parsed_function()->HasDeferredPrefixes()) {
         if (prefix_invalidation_gen_at_start() !=
@@ skipping 16 matching lines @@
     }
 
     // Register code with the classes it depends on because of CHA and
     // fields it depends on because of store guards, unless we cannot
     // deopt.
     for (intptr_t i = 0;
          i < thread()->cha()->leaf_classes().length();
          ++i) {
       thread()->cha()->leaf_classes()[i]->RegisterCHACode(code);
     }
-    for (intptr_t i = 0;
-         i < flow_graph->guarded_fields()->length();
-         i++) {
-      const Field* field = (*flow_graph->guarded_fields())[i];
+    const ZoneGrowableArray<const Field*>& guarded_fields =
+        *flow_graph->parsed_function().guarded_fields();
+    for (intptr_t i = 0; i < guarded_fields.length(); i++) {
+      const Field* field = guarded_fields[i];
       field->RegisterDependentCode(code);
     }
   } else {  // not optimized.
     if (function.ic_data_array() == Array::null()) {
       function.SaveICDataMap(
           graph_compiler->deopt_id_to_ic_data(),
           Array::Handle(zone, graph_compiler->edge_counters_array()));
     }
     function.set_unoptimized_code(code);
     function.AttachCode(code);
@@ skipping 1349 matching lines @@
 }
 
 
 void BackgroundCompiler::EnsureInit(Thread* thread) {
   UNREACHABLE();
 }
 
 #endif  // DART_PRECOMPILED_RUNTIME
 
 }  // namespace dart