With --noopt run unoptimized code through optimizer, more optimizations can be done later.

runtime/vm/intermediate_language.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/intermediate_language.h"
 
 #include "vm/bit_vector.h"
 #include "vm/constant_propagator.h"
 #include "vm/cpu.h"
 #include "vm/dart_entry.h"
@@ skipping 2920 matching lines @@
     case Token::kSUB: return stub_code->SmiSubInlineCacheEntryPoint();
     case Token::kEQ:  return stub_code->SmiEqualInlineCacheEntryPoint();
     default:          return 0;
   }
 }
 
 
 void InstanceCallInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   Zone* zone = compiler->zone();
   const ICData* call_ic_data = NULL;
-  if (!FLAG_propagate_ic_data || !compiler->is_optimizing()) {
+  if (!FLAG_propagate_ic_data || !compiler->is_optimizing() ||
+      (ic_data() == NULL)) {
     const Array& arguments_descriptor =
         Array::Handle(zone, ArgumentsDescriptor::New(ArgumentCount(),
-                                                        argument_names()));
+                                                     argument_names()));
     call_ic_data = compiler->GetOrAddInstanceCallICData(
         deopt_id(), function_name(), arguments_descriptor,
         checked_argument_count());
   } else {
     call_ic_data = &ICData::ZoneHandle(zone, ic_data()->raw());
   }
-  if (compiler->is_optimizing()) {
+  if (compiler->is_optimizing() && HasICData()) {
     ASSERT(HasICData());
     if (ic_data()->NumberOfUsedChecks() > 0) {
       const ICData& unary_ic_data =
           ICData::ZoneHandle(zone, ic_data()->AsUnaryClassChecks());
       compiler->GenerateInstanceCall(deopt_id(),
                                      token_pos(),
                                      ArgumentCount(),
                                      locs(),
                                      unary_ic_data);
     } else {
@@ skipping 85 matching lines @@
 
 
 LocationSummary* StaticCallInstr::MakeLocationSummary(Zone* zone,
                                                       bool optimizing) const {
   return MakeCallSummary(zone);
 }
 
 
 void StaticCallInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
   const ICData* call_ic_data = NULL;
-  if (!FLAG_propagate_ic_data || !compiler->is_optimizing()) {
+  if (!FLAG_propagate_ic_data || !compiler->is_optimizing() ||
+      (ic_data() == NULL)) {
     const Array& arguments_descriptor =
         Array::Handle(ArgumentsDescriptor::New(ArgumentCount(),
                                                argument_names()));
     MethodRecognizer::Kind recognized_kind =
         MethodRecognizer::RecognizeKind(function());
     int num_args_checked = 0;
     switch (recognized_kind) {
       case MethodRecognizer::kDoubleFromInteger:
       case MethodRecognizer::kMathMin:
       case MethodRecognizer::kMathMax:
@@ skipping 531 matching lines @@
     case Token::kTRUNCDIV: return 0;
     case Token::kMOD: return 1;
     default: UNIMPLEMENTED(); return -1;
   }
 }
 
 
 #undef __
 
 }  // namespace dart