Ensure we perform the same checks for all optimizing compilations.

runtime/vm/compiler.cc

 // Copyright (c) 2012, 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"
@@ skipping 250 matching lines @@
     // LongJump.
     {
       TimerScope timer(FLAG_compiler_stats,
                        &CompilerStats::graphbuilder_timer,
                        isolate);
       Array& ic_data_array = Array::Handle();
       if (optimized) {
         ASSERT(function.HasCode());
         // Extract type feedback before the graph is built, as the graph
         // builder uses it to attach it to nodes.
-        // Do not use type feedback to optimize a function that was
-        // deoptimized too often.
-        if (function.deoptimization_counter() <
-            FLAG_deoptimization_counter_threshold) {
-          const Code& unoptimized_code =
-              Code::Handle(function.unoptimized_code());
-          ic_data_array = unoptimized_code.ExtractTypeFeedbackArray();
-        }
+        ASSERT(function.deoptimization_counter() <
+               FLAG_deoptimization_counter_threshold);
+        const Code& unoptimized_code =
+            Code::Handle(function.unoptimized_code());
+        ic_data_array = unoptimized_code.ExtractTypeFeedbackArray();
       }
 
       // Build the flow graph.
       FlowGraphBuilder builder(parsed_function,
                                ic_data_array,
                                NULL,  // NULL = not inlining.
                                osr_id);
       flow_graph = builder.BuildGraph();
     }
 
@@ skipping 591 matching lines @@
       Object::Handle(isolate->object_store()->sticky_error());
     isolate->object_store()->clear_sticky_error();
     isolate->set_long_jump_base(base);
     return result.raw();
   }
   UNREACHABLE();
   return Object::null();
 }
 
 }  // namespace dart