Store arguments descriptor in ICData. Remove loading of arguments descriptor at unoptimized call si…

runtime/vm/deopt_instructions.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/deopt_instructions.h"
 
 #include "vm/assembler.h"
 #include "vm/code_patcher.h"
 #include "vm/intermediate_language.h"
 #include "vm/locations.h"
@@ skipping 262 matching lines @@
     uword continue_at_pc = code.GetPcForDeoptId(deopt_id_,
                                                 PcDescriptors::kDeopt);
     ASSERT(continue_at_pc != 0);
     *to_addr = continue_at_pc;
 
     uword pc = code.GetPcForDeoptId(deopt_id_, PcDescriptors::kIcCall);
     if (pc != 0) {
       // If the deoptimization happened at an IC call, update the IC data
       // to avoid repeated deoptimization at the same site next time around.
       ICData& ic_data = ICData::Handle();
-      CodePatcher::GetInstanceCallAt(pc, code, &ic_data, NULL);
+      CodePatcher::GetInstanceCallAt(pc, code, &ic_data);
       if (!ic_data.IsNull()) {
         ic_data.set_deopt_reason(deopt_context->deopt_reason());
       }
     }
   }
 
   intptr_t object_table_index() const { return object_table_index_; }
   intptr_t deopt_id() const { return deopt_id_; }
 
  private:
@@ skipping 804 matching lines @@
                           Smi* offset,
                           DeoptInfo* info,
                           Smi* reason) {
   intptr_t i = index * kEntrySize;
   *offset ^= table.At(i);
   *info ^= table.At(i + 1);
   *reason ^= table.At(i + 2);
 }
 
 }  // namespace dart