VM-codegen: Add IL instruction to check if a Smi is in a constant range

runtime/vm/flow_graph_compiler.cc

 // Copyright (c) 2013, 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_XXX.
 
 #include "vm/flow_graph_compiler.h"
 
 #include "vm/bit_vector.h"
 #include "vm/cha.h"
@@ skipping 1749 matching lines @@
   CallTargets* targets = new (zone) CallTargets(zone);
   targets->Add(new (zone) TargetInfo(cid, cid, &fn, /* count = */ 1));
 
   return targets;
 }
 
 
 bool FlowGraphCompiler::LookupMethodFor(int class_id,
                                         const String& name,
                                         const ArgumentsDescriptor& args_desc,
-                                        Function* fn_return) {
+                                        Function* fn_return,
+                                        bool* class_is_abstract_return) {
   Thread* thread = Thread::Current();
   Isolate* isolate = thread->isolate();
   Zone* zone = thread->zone();
   if (class_id < 0) return false;
   if (class_id >= isolate->class_table()->NumCids()) return false;
 
   RawClass* raw_class = isolate->class_table()->At(class_id);
   if (raw_class == NULL) return false;
   Class& cls = Class::Handle(zone, raw_class);
   if (cls.IsNull()) return false;
   if (!cls.is_finalized()) return false;
   if (Array::Handle(cls.functions()).IsNull()) return false;
 
+  if (class_is_abstract_return != NULL) {
+    *class_is_abstract_return = cls.is_abstract();
+  }
   const bool allow_add = false;
   Function& target_function =
       Function::Handle(zone, Resolver::ResolveDynamicForReceiverClass(
                                  cls, name, args_desc, allow_add));
   if (target_function.IsNull()) return false;
   *fn_return ^= target_function.raw();
   return true;
 }
 
 
@@ skipping 224 matching lines @@
 
 
 void FlowGraphCompiler::FrameStateClear() {
   ASSERT(!is_optimizing());
   frame_state_.TruncateTo(0);
 }
 #endif  // defined(DEBUG) && !defined(TARGET_ARCH_DBC)
 
 
 }  // namespace dart