In optimized code use IC calls for instance calls that have no IC data instead of deoptimizing. The…

runtime/vm/intermediate_language.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/intermediate_language.h"
 
 #include "vm/bit_vector.h"
 #include "vm/dart_entry.h"
 #include "vm/flow_graph_allocator.h"
 #include "vm/flow_graph_builder.h"
@@ skipping 1851 matching lines @@
 
 void InstanceCallInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   ICData& call_ic_data = ICData::ZoneHandle(ic_data()->raw());
   if (!FLAG_propagate_ic_data || !compiler->is_optimizing()) {
     call_ic_data = ICData::New(compiler->parsed_function().function(),
                                function_name(),
                                deopt_id(),
                                checked_argument_count());
   }
   if (compiler->is_optimizing()) {
-    if (HasICData() && (ic_data()->NumberOfChecks() > 0)) {
+    ASSERT(HasICData());
+    if (ic_data()->NumberOfChecks() > 0) {
       const ICData& unary_ic_data =
           ICData::ZoneHandle(ic_data()->AsUnaryClassChecks());
       compiler->GenerateInstanceCall(deopt_id(),
                                      token_pos(),
                                      ArgumentCount(),
                                      argument_names(),
                                      locs(),
                                      unary_ic_data);
     } else {
-      Label* deopt =
-          compiler->AddDeoptStub(deopt_id(), kDeoptInstanceCallNoICData);
-      __ jmp(deopt);
+      // Call was not visited yet, use original ICData in order to populate it.
+      compiler->GenerateInstanceCall(deopt_id(),
+                                     token_pos(),
+                                     ArgumentCount(),
+                                     argument_names(),
+                                     locs(),
+                                     call_ic_data);
     }
   } else {
+    // Unoptimized code.
     ASSERT(!HasICData());
     compiler->AddCurrentDescriptor(PcDescriptors::kDeoptBefore,
                                    deopt_id(),
                                    token_pos());
     compiler->GenerateInstanceCall(deopt_id(),
                                    token_pos(),
                                    ArgumentCount(),
                                    argument_names(),
                                    locs(),
                                    call_ic_data);
@@ skipping 746 matching lines @@
       return Array::length_offset();
     default:
       UNREACHABLE();
       return -1;
   }
 }
 
 #undef __
 
 }  // namespace dart