Adding JRecord and boxing mechanics.

tests/corelib_2/corelib_2.status

Index: tests/corelib_2/corelib_2.status
diff --git a/tests/corelib_2/corelib_2.status b/tests/corelib_2/corelib_2.status
index dc2376fc101fa3060b1ddc99995183f66924fe82..346d67eab16d40228ad06ea3d644919928212c5c 100644
--- a/tests/corelib_2/corelib_2.status
+++ b/tests/corelib_2/corelib_2.status
@@ -485,12 +485,15 @@ const_list_literal_test: Crash
 const_list_set_range_test: Crash
 core_runtime_types_test: Crash
 data_uri_test: Crash
+date_time_test: Crash # Failed assertion: boolean expression must not be null
+duration_test: Crash # Failed assertion: boolean expression must not be null
 dynamic_nosuchmethod_test: Crash # 'file:*/pkg/compiler/lib/src/ssa/locals_handler.dart': Failed assertion: line 425 pos 12: '!isStoredInClosureField(local)': Local local(NoSuchMethodError.toString#comma) is stored in a closure field.
 error_stack_trace1_test: Crash # 'file:*/pkg/compiler/lib/src/js_model/closure.dart': Failed assertion: line 197 pos 9: 'closure != null': Corresponding closure class not found for j:getter(Iterable.iterator). Closures found for (j:closure_call(Closure_fromTearOff_closure.call), j:closure_call(Maps_mapToString_closure.call), j:closure_call(unwrapException_closure.call))
 error_stack_trace2_test: Crash # Assertion failure: Unexpected constructor j:constructor(A.) in ConstructorDataImpl._getConstructorConstant
 expando_test: Crash # 'file:*/pkg/compiler/lib/src/ssa/locals_handler.dart': Failed assertion: line 425 pos 12: '!isStoredInClosureField(local)': Local local(Maps.mapToString#first) is stored in a closure field.
 for_in_test: Crash
 growable_list_test: Crash
+has_next_iterator_test: Crash # Failed assertion: boolean expression must not be null
 hash_map2_test: Crash
 hash_map_test: Crash # 'file:*/pkg/compiler/lib/src/ssa/locals_handler.dart': Failed assertion: line 425 pos 12: '!isStoredInClosureField(local)': Local local(Maps.mapToString#first) is stored in a closure field.
 hash_set_test/01: Crash
@@ -547,7 +550,9 @@ linked_hash_map_from_iterables_test: Crash
 linked_hash_map_test: Crash
 list_as_map_test: Crash
 list_contains_argument_order_test: Crash
+list_fixed_test: Crash # Failed assertion: boolean expression must not be null
 list_get_range_test: Crash
+list_growable_test: Crash # Failed assertion: boolean expression must not be null
 list_insert_all_test: Crash
 list_insert_test: Crash
 list_map_test: Crash
@@ -555,7 +560,7 @@ list_replace_range_test: Crash
 list_reversed_test: Crash
 list_set_all_test: Crash
 list_set_range_test: Crash
-list_sort_test: RuntimeError
+list_sort_test: Crash # Failed assertion: boolean expression must not be null
 list_test/01: Crash
 list_test/none: Crash
 list_unmodifiable_test: Crash
@@ -614,7 +619,7 @@ set_retainAll_test: Crash
 set_test: Crash
 set_to_string_test: Crash
 shuffle_test: Crash
-sort_test: RuntimeError
+sort_test: Crash # Failed assertion: boolean expression must not be null
 splay_tree_from_iterable_test: Crash
 splay_tree_from_iterables_test: Crash
 splay_tree_test/01: Crash
@@ -708,10 +713,12 @@ const_list_set_range_test: Crash
 core_runtime_types_static_test: Crash
 core_runtime_types_test: Crash
 data_uri_test: Crash
+date_time_test: Crash # Stack Overflow
+duration_test: Crash # Stack Overflow
 dynamic_nosuchmethod_test: Crash
 error_stack_trace1_test: Crash
 error_stack_trace2_test: Crash
-expando_test: RuntimeError
+expando_test: Crash # Stack Overflow
 for_in_test: Crash
 from_environment_const_type_test/02: Crash
 from_environment_const_type_test/03: Crash
@@ -738,7 +745,9 @@ from_environment_const_type_undefined_test/13: Crash
 from_environment_const_type_undefined_test/14: Crash
 from_environment_const_type_undefined_test/16: Crash
 growable_list_test: Crash
+has_next_iterator_test: Crash # Stack Overflow
 hash_map2_test: Crash
+hash_map_test: Crash # Stack Overflow
 hash_set_test/01: Crash
 hash_set_test/none: Crash
 hash_set_type_check_test: Crash # NoSuchMethodError: The getter 'name' was called on null.
@@ -796,7 +805,9 @@ linked_hash_map_from_iterables_test: Crash # Assertion failure: Cannot find valu
 linked_hash_map_test: Crash # Assertion failure: Cannot find value local(LinkedHashMapTest_testMain_closure.call#keys) in (local(LinkedHashMapTest_testMain_closure.call#v), local(LinkedHashMapTest.testMain#testForEachKey)) for j:closure_call(LinkedHashMapTest_testMain_closure.call).
 list_as_map_test: Crash # Assertion failure: Cannot find value local(Maps_mapToString_closure.call#first) in (local(Maps_mapToString_closure.call#k), local(Maps_mapToString_closure.call#v), local(Maps.mapToString#)) for j:closure_call(Maps_mapToString_closure.call).
 list_contains_argument_order_test: Crash # NoSuchMethodError: The getter 'enclosingClass' was called on null.
+list_fixed_test: Crash # Stack Overflow
 list_get_range_test: Crash # UnimplementedError: KernelClosedWorldMixin.getAppliedMixin
+list_growable_test: Crash # Stack Overflow
 list_insert_all_test: Crash # UnimplementedError: KernelClosedWorldMixin.getAppliedMixin
 list_insert_test: Crash # UnimplementedError: KernelClosedWorldMixin.getAppliedMixin
 list_map_test: Crash
@@ -804,19 +815,22 @@ list_replace_range_test: Crash
 list_reversed_test: Crash
 list_set_all_test: Crash
 list_set_range_test: Crash
-list_sort_test: RuntimeError
+list_sort_test: Crash # Stack Overflow
 list_test/01: Crash
 list_test/none: Crash
 list_unmodifiable_test: Crash
 main_test: Crash
+map_contains_key_test: Crash # Stack Overflow
 map_contains_value_test: Crash
 map_from_iterable_test: Crash
 map_from_iterables_test: Crash
 map_from_test: Crash
+map_index_test: Crash # Stack Overflow
 map_keys2_test: Crash
 map_keys_test: Crash
+map_remove_test: Crash # Stack Overflow
 map_test: Crash # Issue 27394
-map_to_string_test: RuntimeError
+map_to_string_test: Crash # Stack Overflow
 map_values2_test: Crash
 map_values3_test: Crash
 map_values4_test: Crash
@@ -834,7 +848,7 @@ reg_exp4_test: Crash
 reg_exp5_test: Crash
 reg_exp_all_matches_test: Crash
 reg_exp_start_end_test: Crash
-regexp/ascii-regexp-subject_test: Timeout
+regexp/ascii-regexp-subject_test: Crash # Stack Overflow
 regexp/capture_test: Crash
 regexp/ecma-regex-examples_test: Crash
 regexp/extended-characters-more_test: Crash
@@ -861,7 +875,7 @@ set_retainAll_test: Crash
 set_test: Crash
 set_to_string_test: Crash
 shuffle_test: Crash
-sort_test: RuntimeError
+sort_test: Crash # Stack Overflow
 splay_tree_from_iterable_test: Crash
 splay_tree_from_iterables_test: Crash
 splay_tree_test/01: Crash