Compress deopt instructions in memory using variable length encoding.

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 844 matching lines @@
   DeoptInfoBuilder builder(zone(), incoming_arg_count);
 
   intptr_t deopt_info_table_size = DeoptTable::SizeFor(deopt_infos_.length());
   if (deopt_info_table_size == 0) {
     code.set_deopt_info_array(Object::empty_array());
     code.set_object_table(Object::empty_array());
   } else {
     const Array& array =
         Array::Handle(Array::New(deopt_info_table_size, Heap::kOld));
     Smi& offset = Smi::Handle();
-    DeoptInfo& info = DeoptInfo::Handle();
+    TypedData& info = TypedData::Handle();
     Smi& reason_and_flags = Smi::Handle();
     for (intptr_t i = 0; i < deopt_infos_.length(); i++) {
       offset = Smi::New(deopt_infos_[i]->pc_offset());
       info = deopt_infos_[i]->CreateDeoptInfo(this, &builder, array);
       reason_and_flags = DeoptTable::EncodeReasonAndFlags(
           deopt_infos_[i]->reason(),
           deopt_infos_[i]->flags());
       DeoptTable::SetEntry(array, i, offset, info, reason_and_flags);
     }
     code.set_deopt_info_array(array);
@@ skipping 804 matching lines @@
 
 
 void FlowGraphCompiler::FrameStateClear() {
   ASSERT(!is_optimizing());
   frame_state_.TruncateTo(0);
 }
 #endif
 
 
 }  // namespace dart