Store optimized flow graph statistics on the function itself.

runtime/vm/object.h

Index: runtime/vm/object.h
diff --git a/runtime/vm/object.h b/runtime/vm/object.h
index 0acf40a3caccfa70bc79fcc6d7221a98ed0c58cb..a0c5fbf11c20a0d36c9161182699d62b68573f51 100644
--- a/runtime/vm/object.h
+++ b/runtime/vm/object.h
@@ -1288,6 +1288,20 @@ class Function : public Object {
     raw_ptr()->deoptimization_counter_ = value;
   }
 
+  uint16_t optimized_instruction_count() const {

[srdjan, 2012/12/13 19:00:17]

I think it would be better to pass and return intptr_t-s instead of uint16_t-s.
That would also require a check in the setter that clamps the counter to max
uint16_t value and aserts that it is not less than 0.

[Vyacheslav Egorov (Google), 2012/12/13 19:14:11]

Done.

+    return raw_ptr()->optimized_instruction_count_;
+  }
+  void set_optimized_instruction_count(uint16_t value) const {
+    raw_ptr()->optimized_instruction_count_ = value;
+  }
+
+  uint16_t optimized_call_site_count() const {
+    return raw_ptr()->optimized_call_site_count_;
+  }
+  void set_optimized_call_site_count(uint16_t value) const {
+    raw_ptr()->optimized_call_site_count_ = value;
+  }
+
   bool is_optimizable() const;
   void set_is_optimizable(bool value) const;