Don't inline functions above the deoptimization threshold.

runtime/vm/deopt_instructions.cc

Index: runtime/vm/deopt_instructions.cc
diff --git a/runtime/vm/deopt_instructions.cc b/runtime/vm/deopt_instructions.cc
index c2baadf9768c7371afca74b2bfb07b8af888944a..d9507d6051ddc86f63cc7af11997901566aae8cf 100644
--- a/runtime/vm/deopt_instructions.cc
+++ b/runtime/vm/deopt_instructions.cc
@@ -421,6 +421,13 @@ class DeoptPcMarkerInstr : public DeoptInstr {
                          AssemblerMacros::kOffsetOfSavedPCfromEntrypoint;
     intptr_t* to_addr = deopt_context->GetToFrameAddressAt(to_index);
     *to_addr = pc_marker;
+    // Increment the deoptimization counter. This effectively increments each
+    // function occurring in the optimized frame.
+    function.set_deoptimization_counter(function.deoptimization_counter() + 1);
+    // Clear invocation counter so that the function gets optimized only after

[Kevin Millikin (Google), 2012/10/04 11:37:59]

Comment should say 'reoptimized'.  Maybe we should say 'hopefully' in there
somewhere :)

[zerny-google, 2012/10/04 12:18:41]

Done. :)

+    // more feedback has been collected.
+    function.set_usage_counter(0);
+    if (function.HasOptimizedCode()) function.SwitchToUnoptimizedCode();
   }
 
  private: