DBC: Support large offsets in optimized field access.

tests/language/language.status

 # 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.
 
 # This directory contains tests that are intended to show the
 # current state of the language.
 
 [ ($compiler == none || $compiler == precompiler || $compiler == dart2app || $compiler == dart2appjit) ]
 tearoff_constructor_basic_test: Skip # Crashes in checked mode -- hausner investigating
 generic_methods_type_expression_test: RuntimeError # Issue 25869
@@ skipping 221 matching lines @@
 library_env_test/has_no_io_support: RuntimeError, OK
 
 [ ($compiler == none || $compiler == dart2app || $compiler == dart2appjit) && $noopt == false && $mode != product ]
 # The following tests are supposed to fail.
 library_env_test/has_no_mirror_support: RuntimeError, OK
 
 [ $noopt || $compiler == precompiler || $mode == product ]
 # The following tests are supposed to fail.
 library_env_test/has_mirror_support: RuntimeError, OK
 
-[ $arch == simdbc || $arch == simdbc64 ]
-# TODO(vegorov) Encoding limitation: StoreField bytecode only supports 256
-# fields in an object.
-large_class_declaration_test: Skip
-
 [ $compiler == precompiler && $runtime == dart_precompiled && $system == android ]
 vm/optimized_guarded_field_isolates_test: Skip # Issue #26373
 issue23244_test: Skip # Issue #26373
 
 [ $hot_reload || $hot_reload_rollback ]
 static_closure_identical_test: Pass, Fail # Closure identity
 cha_deopt1_test: Crash # Requires deferred libraries
 cha_deopt2_test: Crash # Requires deferred libraries
 cha_deopt3_test: Crash # Requires deferred libraries
 deferred_call_empty_before_load_test: Crash # Requires deferred libraries
@@ skipping 35 matching lines @@
 assert_initializer_test/*: MissingCompileTimeError, OK  # asserts shouldn't fail in unchecked mode.
 assert_initializer_test/none: pass
 
 [$runtime == vm && $compiler == none && $checked]
 # The VM doesn't enforce that potentially const expressions are actually
 # const expressions when the constructor is called with `const`.
 assert_initializer_test/4*: MissingCompileTimeError # Issue 392.
 
 [$runtime == vm && $compiler == none]
 duplicate_part_test/01: MissingCompileTimeError # Issue 27516