Support for mixed null/smi equality: do not deoptimize, emit same optimized code as if that was smi…

runtime/vm/flow_graph_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/globals.h"  // Needed here to get TARGET_ARCH_XXX.
 
 #include "vm/flow_graph_compiler.h"
 
 #include "vm/dart_entry.h"
 #include "vm/debugger.h"
@@ skipping 456 matching lines @@
   }
   // Even if an intrinsified version of the function was successfully
   // generated, it may fall through to the non-intrinsified method body.
   if (!FLAG_trace_functions) {
     return Intrinsifier::Intrinsify(parsed_function().function(), assembler());
   }
   return false;
 }
 
 
-void FlowGraphCompiler::GenerateInstanceCall(
+const ICData& FlowGraphCompiler::GenerateInstanceCall(
     intptr_t deopt_id,
     intptr_t token_pos,
     const String& function_name,
     intptr_t argument_count,
     const Array& argument_names,
     intptr_t checked_argument_count,
     LocationSummary* locs) {
   ASSERT(!IsLeaf());
   ICData& ic_data =
       ICData::ZoneHandle(ICData::New(parsed_function().function(),
@@ skipping 13 matching lines @@
     case 3:
       label_address = StubCode::ThreeArgsCheckInlineCacheEntryPoint();
       break;
     default:
       UNIMPLEMENTED();
   }
   ExternalLabel target_label("InlineCache", label_address);
 
   EmitInstanceCall(&target_label, ic_data, arguments_descriptor, argument_count,
                    deopt_id, token_pos, locs);
+  return ic_data;
 }
 
 
 void FlowGraphCompiler::GenerateStaticCall(intptr_t deopt_id,
                                            intptr_t token_pos,
                                            const Function& function,
                                            intptr_t argument_count,
                                            const Array& argument_names,
                                            LocationSummary* locs) {
   const Array& arguments_descriptor =
@@ skipping 378 matching lines @@
     case ABOVE:         return unsigned_left > unsigned_right;
     case ABOVE_EQUAL:   return unsigned_left >= unsigned_right;
     default:
       UNIMPLEMENTED();
       return false;
   }
 }
 
 
 }  // namespace dart