Use off-heap data for type feedback in PolymorphicInstanceCallInstr

runtime/vm/jit_optimizer.h

Index: runtime/vm/jit_optimizer.h
diff --git a/runtime/vm/jit_optimizer.h b/runtime/vm/jit_optimizer.h
index 23dd278db3d4671297dfbe95918f6e5a72f8ef35..4b323d55f11ac773c720d79d8133138c27c460b2 100644
--- a/runtime/vm/jit_optimizer.h
+++ b/runtime/vm/jit_optimizer.h
@@ -10,6 +10,7 @@
 
 namespace dart {
 
+struct CidRangeTarget;
 class CSEInstructionMap;
 template <typename T>
 class GrowableArray;
@@ -44,6 +45,12 @@ class JitOptimizer : public FlowGraphVisitor {
     flow_graph_->InsertBefore(next, instr, env, use_kind);
   }
 
+  // Creates the off-heap PolymorphicTargets object that reflects the contents
+  // of the on-VM-heap IC data. Also expands the class-ids to neighbouring
+  // classes that inherit the same method.
+  static PolymorphicTargets* CreatePolymorphicTargets(Zone* zone,
+                                                      const ICData& ic_data);
+
  private:
   // Attempt to build ICData for call using propagated class-ids.
   bool TryCreateICData(InstanceCallInstr* call);
@@ -52,12 +59,6 @@ class JitOptimizer : public FlowGraphVisitor {
 
   bool TryReplaceWithIndexedOp(InstanceCallInstr* call);
 
-  void TryExpandClassesInICData(const ICData& ic_data);
-  bool LookupMethodFor(int class_id,
-                       const ArgumentsDescriptor& args_desc,
-                       const String& name,
-                       Function* fn_return);
-
   bool TryReplaceWithBinaryOp(InstanceCallInstr* call, Token::Kind op_kind);
   bool TryReplaceWithUnaryOp(InstanceCallInstr* call, Token::Kind op_kind);