Execute deoptimization instruction in reverse order.

runtime/vm/code_generator.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/code_generator.h"
 
 #include "vm/assembler_macros.h"
 #include "vm/ast.h"
 #include "vm/code_patcher.h"
 #include "vm/compiler.h"
@@ skipping 1570 matching lines @@
       0 : function.num_fixed_parameters();
   intptr_t to_frame_size =
       1  // Deoptimized function's return address.
       + (caller_frame.fp() - caller_frame.sp()) / kWordSize
       + 3  // caller-fp, pc, pc-marker.
       + num_args;
   DeoptimizationContext deopt_context(start,
                                       to_frame_size,
                                       Array::Handle(code.object_table()),
                                       num_args);
-  for (intptr_t to_index = 0; to_index < len; to_index++) {
+  for (intptr_t to_index = len - 1; to_index >= 0; to_index--) {
     deopt_instructions[to_index]->Execute(&deopt_context, to_index);
   }
   if (FLAG_trace_deopt) {
     for (intptr_t i = 0; i < len; i++) {
       OS::Print("*%d. [0x%0" PRIxPTR "] 0x%012" PRIxPTR " [%s]\n",
           i,
           &start[i],
           start[i],
           deopt_instructions[i]->ToCString());
     }
@@ skipping 74 matching lines @@
                 current->slot(),
                 current->value());
     }
 
     delete current;
   }
 }
 
 
 }  // namespace dart