Compress deopt instructions in memory using variable length encoding.

runtime/vm/raw_object.cc

Index: runtime/vm/raw_object.cc
diff --git a/runtime/vm/raw_object.cc b/runtime/vm/raw_object.cc
index 0ef0d80a5b7ff824573f368b3b477d69a06b9f20..c4ce43c6d99b5709e5e4923b24d7cb09cf739d8f 100644
--- a/runtime/vm/raw_object.cc
+++ b/runtime/vm/raw_object.cc
@@ -169,13 +169,6 @@ intptr_t RawObject::SizeFromClass() const {
       instance_size = ExceptionHandlers::InstanceSize(num_handlers);
       break;
     }
-    case kDeoptInfoCid: {
-      const RawDeoptInfo* raw_deopt_info =
-          reinterpret_cast<const RawDeoptInfo*>(this);
-      intptr_t num_entries = Smi::Value(raw_deopt_info->ptr()->length_);
-      instance_size = DeoptInfo::InstanceSize(num_entries);
-      break;
-    }
     case kJSRegExpCid: {
       const RawJSRegExp* raw_jsregexp =
           reinterpret_cast<const RawJSRegExp*>(this);
@@ -586,15 +579,6 @@ intptr_t RawExceptionHandlers::VisitExceptionHandlersPointers(
 }
 
 
-intptr_t RawDeoptInfo::VisitDeoptInfoPointers(
-    RawDeoptInfo* raw_obj, ObjectPointerVisitor* visitor) {
-  RawDeoptInfo* obj = raw_obj->ptr();
-  intptr_t length = Smi::Value(obj->length_);
-  visitor->VisitPointer(reinterpret_cast<RawObject**>(&obj->length_));
-  return DeoptInfo::InstanceSize(length);
-}
-
-
 intptr_t RawContext::VisitContextPointers(RawContext* raw_obj,
                                           ObjectPointerVisitor* visitor) {
   intptr_t num_variables = raw_obj->ptr()->num_variables_;