diff --git a/pkg/vm/bin/gen_kernel.dart b/pkg/vm/bin/gen_kernel.dart
index f48b3295dbf..16212bf43c0 100644
--- a/pkg/vm/bin/gen_kernel.dart
+++ b/pkg/vm/bin/gen_kernel.dart
@@ -43,7 +43,7 @@ final ArgParser _argParser = new ArgParser(allowTrailingOptions: true)
       help: 'Whether asserts will be enabled.', defaultsTo: false)
   ..addFlag('enable-constant-evaluation',
       help: 'Whether kernel constant evaluation will be enabled.',
-      defaultsTo: false)
+      defaultsTo: true)
   ..addMultiOption('entry-points',
       help: 'Path to JSON file with the list of entry points')
   ..addFlag('gen-bytecode',
diff --git a/pkg/vm/lib/kernel_front_end.dart b/pkg/vm/lib/kernel_front_end.dart
index 985b68560f9..7d3cec8321c 100644
--- a/pkg/vm/lib/kernel_front_end.dart
+++ b/pkg/vm/lib/kernel_front_end.dart
@@ -58,7 +58,7 @@ Future<Component> compileToKernel(Uri source, CompilerOptions options,
     bool genBytecode: false,
     bool dropAST: false,
     bool enableAsserts: false,
-    bool enableConstantEvaluation: false}) async {
+    bool enableConstantEvaluation: true}) async {
   // Replace error handler to detect if there are compilation errors.
   final errorDetector =
       new ErrorDetector(previousErrorHandler: options.onProblem);
diff --git a/tests/language_2/language_2_kernel.status b/tests/language_2/language_2_kernel.status
index cde173940eb..7927e906f63 100644
--- a/tests/language_2/language_2_kernel.status
+++ b/tests/language_2/language_2_kernel.status
@@ -68,11 +68,8 @@ bad_override_test/02: MissingCompileTimeError # Issue 32984
 call_non_method_field_test/01: MissingCompileTimeError # Issue 32975
 call_non_method_field_test/02: MissingCompileTimeError # Issue 32975
 check_member_static_test/01: MissingCompileTimeError # Issue 32613
-compile_time_constant_o_test/01: MissingCompileTimeError # Issue 32983
-compile_time_constant_o_test/02: MissingCompileTimeError # Issue 32983
 const_cast2_test/01: CompileTimeError # Issue 32517
 const_cast2_test/none: CompileTimeError # Issue 32517
-const_dynamic_type_literal_test/02: MissingCompileTimeError # Issue 32983
 const_instance_field_test/01: MissingCompileTimeError # Fasta bug: Const instance field. Issue 32326.
 const_map2_test/00: MissingCompileTimeError # KernelVM bug: Constant evaluation.
 const_map3_test/00: MissingCompileTimeError # KernelVM bug: Constant evaluation.
@@ -106,10 +103,6 @@ generic_methods_bounds_test/01: MissingCompileTimeError # Issue 33018
 generic_methods_overriding_test/01: MissingCompileTimeError # Issue 32613
 generic_methods_recursive_bound_test/02: MissingCompileTimeError # Issue 33018
 getter_override_test/03: MissingCompileTimeError # Issue 32984
-identical_const_test/01: MissingCompileTimeError # Issue 32983
-identical_const_test/02: MissingCompileTimeError # Issue 32983
-identical_const_test/03: MissingCompileTimeError # Issue 32983
-identical_const_test/04: MissingCompileTimeError # Issue 32983
 issue31596_override_test/07: MissingCompileTimeError
 issue31596_override_test/08: MissingCompileTimeError
 issue31596_super_test/02: MissingCompileTimeError
@@ -450,10 +443,15 @@ export_ambiguous_main_test: Crash # Issue 32618
 [ $compiler != dart2js && $compiler != dartk && $compiler != dartkp && $fasta ]
 const_optional_args_test/01: MissingCompileTimeError
 
-[ $compiler != dart2js && $fasta ]
+# The precomilation configuration uses a kernel2kernel constants evaluator
+# which is is more correct than fasta/vm in JIT mode (i.e. it catches more
+# compile-time errors).
+[ $compiler != dart2js && $compiler != dartkp && $fasta ]
 compile_time_constant_c_test/02: MissingCompileTimeError
 const_constructor_nonconst_field_test/01: MissingCompileTimeError
 const_syntax_test/05: MissingCompileTimeError
+
+[ $compiler != dart2js && $fasta ]
 mixin_super_2_test/01: MissingCompileTimeError
 mixin_super_2_test/03: MissingCompileTimeError
 mixin_supertype_subclass_test/02: MissingCompileTimeError
@@ -859,11 +857,6 @@ check_member_static_test/02: MissingCompileTimeError # Issue 32613: override che
 checked_setter3_test/01: MissingCompileTimeError
 checked_setter3_test/02: MissingCompileTimeError
 checked_setter3_test/03: MissingCompileTimeError
-compile_time_constant_k_test/01: MissingCompileTimeError
-compile_time_constant_k_test/02: MissingCompileTimeError
-compile_time_constant_k_test/03: MissingCompileTimeError
-compile_time_constant_o_test/01: RuntimeError # KernelVM bug: Constant map duplicated key.
-compile_time_constant_o_test/02: RuntimeError # KernelVM bug: Constant map duplicated key.
 compile_time_constant_static5_test/11: CompileTimeError # Issue 31537
 compile_time_constant_static5_test/16: CompileTimeError # Issue 31537
 compile_time_constant_static5_test/21: CompileTimeError # Issue 31537
@@ -872,11 +865,9 @@ conditional_import_string_test: CompileTimeError # KernelVM bug: Deferred loadin
 conditional_import_test: CompileTimeError # KernelVM bug: Deferred loading kernel issue 30273.
 config_import_corelib_test: CompileTimeError # Issue 31533
 config_import_test: RuntimeError # KernelVM bug: Configurable imports.
-const_dynamic_type_literal_test/02: RuntimeError # KernelVM bug: Constant map duplicated key.
 const_evaluation_test: SkipByDesign
 const_list_test: RuntimeError
 const_map4_test: RuntimeError
-const_nested_test: RuntimeError # KernelVM bug: Constant evaluation.
 constructor12_test: RuntimeError
 constructor3_test: Fail, OK, Pass
 ct_const2_test: Skip # Incompatible flag: --compile_all
@@ -976,8 +967,6 @@ local_function_test/none: RuntimeError
 main_not_a_function_test: Skip
 main_test/03: RuntimeError
 many_overridden_no_such_method_test: SkipByDesign
-map_literal3_test/01: MissingCompileTimeError
-map_literal3_test/02: MissingCompileTimeError
 map_literal3_test/03: MissingCompileTimeError
 method_override4_test/01: MissingCompileTimeError
 method_override4_test/02: MissingCompileTimeError
@@ -1105,6 +1094,28 @@ recursive_generic_test: RuntimeError # Compares a (dynamic) toString call to 'C<
 tearoff_dynamic_test: RuntimeError # Compares call to "foo" (noSuchMethod) with string "foo"
 type_variable_promotion_test: RuntimeError # Compares runtime type to the string "List<B>"
 
+# The precomilation configuration uses a kernel2kernel constants evaluator
+# which is is more correct than fasta/vm in JIT mode (i.e. it catches more
+# compile-time errors).
+[ $compiler != dartkp && $fasta ]
+compile_time_constant_o_test/01: MissingCompileTimeError # Issue 32983
+compile_time_constant_o_test/02: MissingCompileTimeError # Issue 32983
+const_dynamic_type_literal_test/02: MissingCompileTimeError # Issue 32983
+identical_const_test/01: MissingCompileTimeError # Issue 32983
+identical_const_test/02: MissingCompileTimeError # Issue 32983
+identical_const_test/03: MissingCompileTimeError # Issue 32983
+identical_const_test/04: MissingCompileTimeError # Issue 32983
+
+# The precomilation configuration uses a kernel2kernel constants evaluator
+# which is is more correct than fasta/vm in JIT mode (i.e. it catches more
+# compile-time errors).
+[ $compiler != dartkp && $fasta && $strong ]
+compile_time_constant_k_test/01: MissingCompileTimeError
+compile_time_constant_k_test/02: MissingCompileTimeError
+compile_time_constant_k_test/03: MissingCompileTimeError
+map_literal3_test/01: MissingCompileTimeError
+map_literal3_test/02: MissingCompileTimeError
+
 [ $compiler == fasta && $strong ]
 bad_override_test/03: MissingCompileTimeError
 check_member_static_test/02: MissingCompileTimeError
@@ -1298,16 +1309,11 @@ setter_override2_test/02: MissingCompileTimeError
 variable_shadow_class_test/01: MissingCompileTimeError
 
 [ $fasta && $strong ]
-compile_time_constant_k_test/01: MissingCompileTimeError
-compile_time_constant_k_test/02: MissingCompileTimeError
-compile_time_constant_k_test/03: MissingCompileTimeError
 compile_time_constant_static2_test/04: MissingCompileTimeError
 compile_time_constant_static3_test/04: MissingCompileTimeError
 initializing_formal_type_annotation_test/01: MissingCompileTimeError
 initializing_formal_type_annotation_test/02: MissingCompileTimeError
 issue18628_2_test/01: MissingCompileTimeError
-map_literal3_test/01: MissingCompileTimeError
-map_literal3_test/02: MissingCompileTimeError
 map_literal3_test/03: MissingCompileTimeError
 redirecting_factory_infinite_steps_test/01: MissingCompileTimeError
 redirecting_factory_malbounded_test/01: MissingCompileTimeError