Add flag polymorphic_with_deopt (default true) and handle case when false: use megamorphic instead …

runtime/vm/intermediate_language_ia32.cc

Index: runtime/vm/intermediate_language_ia32.cc
diff --git a/runtime/vm/intermediate_language_ia32.cc b/runtime/vm/intermediate_language_ia32.cc
index 1e78e29e2a1730f2c555cf25726681b24d2301dc..2865b2611398e6a0fe35dc3859091dd47ff05400 100644
--- a/runtime/vm/intermediate_language_ia32.cc
+++ b/runtime/vm/intermediate_language_ia32.cc
@@ -24,8 +24,8 @@ namespace dart {
 
 DECLARE_FLAG(bool, emit_edge_counters);
 DECLARE_FLAG(int, optimization_counter_threshold);
-DECLARE_FLAG(bool, use_osr);
 DECLARE_FLAG(bool, throw_on_javascript_int_overflow);
+DECLARE_FLAG(bool, use_osr);
 
 // Generic summary for call instructions that have all arguments pushed
 // on the stack and return the result in a fixed register EAX.
@@ -5690,36 +5690,6 @@ LocationSummary* PolymorphicInstanceCallInstr::MakeLocationSummary(
 }
 
 
-void PolymorphicInstanceCallInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
-  ASSERT(ic_data().NumArgsTested() == 1);
-  if (!with_checks()) {
-    ASSERT(ic_data().HasOneTarget());
-    const Function& target = Function::ZoneHandle(ic_data().GetTargetAt(0));
-    compiler->GenerateStaticCall(deopt_id(),
-                                 instance_call()->token_pos(),
-                                 target,
-                                 instance_call()->ArgumentCount(),
-                                 instance_call()->argument_names(),
-                                 locs(),
-                                 ICData::Handle());
-    return;
-  }
-
-  Label* deopt = compiler->AddDeoptStub(
-      deopt_id(), ICData::kDeoptPolymorphicInstanceCallTestFail);
-  Label ok;
-  compiler->EmitTestAndCall(ic_data(),
-                            instance_call()->ArgumentCount(),
-                            instance_call()->argument_names(),
-                            deopt,
-                            &ok,
-                            deopt_id(),
-                            instance_call()->token_pos(),
-                            locs());
-  __ Bind(&ok);
-}
-
-
 LocationSummary* BranchInstr::MakeLocationSummary(Zone* zone,
                                                   bool opt) const {
   comparison()->InitializeLocationSummary(zone, opt);