Using SubtypeTestCache object instead of an array, that way we do not need to patch and can communi…

runtime/vm/code_generator_ia32.h

Index: runtime/vm/code_generator_ia32.h
===================================================================
--- runtime/vm/code_generator_ia32.h	(revision 7292)
+++ runtime/vm/code_generator_ia32.h	(working copy)
@@ -198,17 +198,18 @@
 
   void GenerateInlinedFinallyBlocks(SourceLabel* label);
 
-  void GenerateInlineInstanceof(intptr_t node_id,
-                                intptr_t token_index,
-                                const AbstractType& type,
-                                Label* is_instance_lbl,
-                                Label* is_not_instance_lbl);
+  RawSubtypeTestCache* GenerateInlineInstanceof(intptr_t node_id,
+                                                intptr_t token_index,
+                                                const AbstractType& type,
+                                                Label* is_instance_lbl,
+                                                Label* is_not_instance_lbl);
 
-  void GenerateInstantiatedTypeWithArgumentsTest(intptr_t node_id,
-                                                 intptr_t token_index,
-                                                 const AbstractType& dst_type,
-                                                 Label* is_instance_lbl,
-                                                 Label* is_not_instance_lbl);
+  RawSubtypeTestCache*  GenerateInstantiatedTypeWithArgumentsTest(
+      intptr_t node_id,
+      intptr_t token_index,
+      const AbstractType& dst_type,
+      Label* is_instance_lbl,
+      Label* is_not_instance_lbl);
   void GenerateInstantiatedTypeNoArgumentsTest(intptr_t node_id,
                                                intptr_t token_index,
                                                const AbstractType& dst_type,
@@ -217,11 +218,12 @@
   void GenerateUninstantiatedTypeTest(const AbstractType& dst_type,
                                       intptr_t token_index,
                                       Label* is_instance_lbl);
-  void GenerateSubtype1TestCacheLookup(intptr_t node_id,
-                                       intptr_t token_index,
-                                       const Class& type_class,
-                                       Label* is_instance_lbl,
-                                       Label* is_not_instance_lbl);
+  RawSubtypeTestCache* GenerateSubtype1TestCacheLookup(
+      intptr_t node_id,
+      intptr_t token_index,
+      const Class& type_class,
+      Label* is_instance_lbl,
+      Label* is_not_instance_lbl);
 
   void HandleBackwardBranch(intptr_t loop_id, intptr_t token_index);