JIT precompilated snapshots.

runtime/vm/raw_object.h

Index: runtime/vm/raw_object.h
diff --git a/runtime/vm/raw_object.h b/runtime/vm/raw_object.h
index 12d5234d300793fde8aa53ac350e64348c00eaa2..30dfb090abe42eff252afe3a79b62715edaa6bd7 100644
--- a/runtime/vm/raw_object.h
+++ b/runtime/vm/raw_object.h
@@ -721,6 +721,7 @@ class RawClass : public RawObject {
       case Snapshot::kAppNoJIT:
         return reinterpret_cast<RawObject**>(&ptr()->direct_subclasses_);
       case Snapshot::kMessage:
+      case Snapshot::kNone:
         break;
     }
     UNREACHABLE();
@@ -949,6 +950,7 @@ class RawField : public RawObject {
       case Snapshot::kAppNoJIT:
         return reinterpret_cast<RawObject**>(&ptr()->initializer_);
       case Snapshot::kMessage:
+      case Snapshot::kNone:
         break;
     }
     UNREACHABLE();
@@ -1029,6 +1031,7 @@ class RawScript : public RawObject {
       case Snapshot::kScript:
         return reinterpret_cast<RawObject**>(&ptr()->tokens_);
       case Snapshot::kMessage:
+      case Snapshot::kNone:
         break;
     }
     UNREACHABLE();
@@ -1515,6 +1518,7 @@ class RawICData : public RawObject {
       case Snapshot::kAppWithJIT:
         return to();
       case Snapshot::kMessage:
+      case Snapshot::kNone:
         break;
     }
     UNREACHABLE();
@@ -1646,6 +1650,7 @@ class RawLibraryPrefix : public RawInstance {
       case Snapshot::kAppNoJIT:
         return reinterpret_cast<RawObject**>(&ptr()->importer_);
       case Snapshot::kMessage:
+      case Snapshot::kNone:
         break;
     }
     UNREACHABLE();