Enables many language tests for arm64.

tests/language/language.status

Index: tests/language/language.status
===================================================================
--- tests/language/language.status	(revision 35723)
+++ tests/language/language.status	(working copy)
@@ -124,5 +124,41 @@
 stack_overflow_test: Skip # Crashes. Issue 17440.
 stack_overflow_stacktrace_test: Skip # Crashes. Issue 17440.
 
+# arm64 port is WIP. No issue numbers until we're a bit further along.
 [ $compiler == none && $runtime == vm && $arch == simarm64 ]
-*: Skip
+vm/regress_16873_test: Skip # Pass, Slow
+
+# Unimplemented features
+vm/load_to_load_forwarding_vm_test: Crash
+vm/string_polymorphic_test: Crash
+vm/optimized_identical_test: Crash
+vm/optimization_test: Crash
+vm/math_vm_test: Crash
+vm/deopt_hoisted_smi_check_vm_test:Crash
+vm/reusable_boxes_test: Crash
+vm/allocation_sinking_vm_test: Crash
+double_modulo_test: Crash
+double_nan_comparison_test: Crash
+number_identity_test: Crash
+modulo_test: Crash
+double_int_addition_test: Crash
+guess_cid_test: Crash
+number_identity2_test: Crash
+arithmetic_canonicalization_test: Crash
+mint_arithmetic_test: Crash
+assign_op_test: Crash
+try_catch_optimized1_test: Crash
+arithmetic_test: Crash
+named_parameters_with_conversions_test: Crash
+branch_canonicalization_test: Crash
+no_such_method_dispatcher_test: Pass, Crash  # Passes in checked mode.
+issue7513_test: Crash
+
+# Bugs
+null_test/none: Skip # Timeout, Crash
+local_function_test: Crash
+invocation_mirror_test: Crash
+call_test: Crash
+interceptor_test: Crash
+closure_call_wrong_argument_count_negative_test: Crash
+call_closurization_test: Crash