DBC: A bit of Polymorphic instance call

runtime/vm/intermediate_language_dbc.cc

 // Copyright (c) 2016, 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/globals.h"  // Needed here to get TARGET_ARCH_DBC.
 #if defined(TARGET_ARCH_DBC)
 
 #include "vm/intermediate_language.h"
 
 #include "vm/cpu.h"
@@ skipping 224 matching lines @@
 }
 
 
 LocationSummary* PolymorphicInstanceCallInstr::MakeLocationSummary(
     Zone* zone, bool optimizing) const {
   return MakeCallSummary(zone);
 }
 
 
 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));
+    const Array& arguments_descriptor =
+        Array::Handle(ArgumentsDescriptor::New(
+            instance_call()->ArgumentCount(),
+            instance_call()->argument_names()));
+    const intptr_t argdesc_kidx = __ AddConstant(arguments_descriptor);
+
+    __ PushConstant(target);
+    __ StaticCall(instance_call()->ArgumentCount(), argdesc_kidx);
+    compiler->AddCurrentDescriptor(RawPcDescriptors::kOther,
+        deopt_id(), instance_call()->token_pos());
+    compiler->RecordAfterCall(this);
+    __ PopLocal(locs()->out(0).reg());
+    return;
+  }
   Unsupported(compiler);
   UNREACHABLE();
 }
 
 
 EMIT_NATIVE_CODE(Stop, 0) {
   __ Stop(message());
 }
 
 
@@ skipping 1208 matching lines @@
   __ IfULe(length, index);
   compiler->EmitDeopt(deopt_id(),
                       ICData::kDeoptCheckArrayBound,
                       (generalized_ ? ICData::kGeneralized : 0) |
                       (licm_hoisted_ ? ICData::kHoisted : 0));
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_DBC