First part of new ICData infrastructure: use a wrapper object instead of an array.

runtime/vm/compiler.cc

 // Copyright (c) 2011, 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/code_generator.h"
 #include "vm/code_index_table.h"
@@ skipping 34 matching lines @@
 
 
 // Extracts IC data associated with a node id.
 // TODO(srdjan): Check performance impact of node id search loop.
 static void ExtractTypeFeedback(const Code& code,
                                 SequenceNode* sequence_node) {
   ASSERT(!code.IsNull() && !code.is_optimized());
   GrowableArray<AstNode*> all_nodes;
   sequence_node->CollectAllNodes(&all_nodes);
   GrowableArray<intptr_t> node_ids;
-  GrowableArray<const Array*> arrays;
-  code.ExtractIcDataArraysAtCalls(&node_ids, &arrays);
+  GrowableArray<const ICData*> ic_data_objs;
+  code.ExtractIcDataArraysAtCalls(&node_ids, &ic_data_objs);
   for (intptr_t i = 0; i < node_ids.length(); i++) {
     intptr_t node_id = node_ids[i];
     bool found_node = false;
     for (intptr_t n = 0; n < all_nodes.length(); n++) {
       if (all_nodes[n]->HasId(node_id)) {
         found_node = true;
         // Make sure we assign ic data array only once.
-        ASSERT(all_nodes[n]->ICDataAtId(node_id).NumberOfChecks() == 0);
-        all_nodes[n]->SetIcDataArrayAtId(node_id, *arrays[i]);
+        ASSERT(all_nodes[n]->ICDataAtId(node_id).IsNull());
+        all_nodes[n]->SetIcDataAtId(node_id, *ic_data_objs[i]);
       }
     }
     ASSERT(found_node);
   }
 }
 
 
 RawError* Compiler::Compile(const Library& library, const Script& script) {
   Isolate* isolate = Isolate::Current();
   Error& error = Error::Handle();
@@ skipping 257 matching lines @@
   } else {
     result = isolate->object_store()->sticky_error();
     isolate->object_store()->clear_sticky_error();
   }
   isolate->set_long_jump_base(base);
   return result.raw();
 }
 
 
 }  // namespace dart