Check in codegen test expectations.

test/codegen/expect/language/compile_time_constant_c_test_01_multi.js

+dart_library.library('language/compile_time_constant_c_test_01_multi', null, /* Imports */[
+  'dart_sdk'
+], function load__compile_time_constant_c_test_01_multi(exports, dart_sdk) {
+  'use strict';
+  const core = dart_sdk.core;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const compile_time_constant_c_test_01_multi = Object.create(null);
+  let dynamicTodynamic = () => (dynamicTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [dart.dynamic])))();
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  compile_time_constant_c_test_01_multi.m0 = dart.const(dart.map([499, 400 + 99]));
+  compile_time_constant_c_test_01_multi.m1 = dart.const(dart.map(["foo" + "bar", 42]));
+  compile_time_constant_c_test_01_multi.m2 = dart.const(dart.map());
+  compile_time_constant_c_test_01_multi.m3 = dart.const(dart.map());
+  compile_time_constant_c_test_01_multi.use = function(x) {
+    return x;
+  };
+  dart.fn(compile_time_constant_c_test_01_multi.use, dynamicTodynamic());
+  compile_time_constant_c_test_01_multi.main = function() {
+    compile_time_constant_c_test_01_multi.use(compile_time_constant_c_test_01_multi.m0);
+    compile_time_constant_c_test_01_multi.use(compile_time_constant_c_test_01_multi.m1);
+    compile_time_constant_c_test_01_multi.use(compile_time_constant_c_test_01_multi.m2);
+    compile_time_constant_c_test_01_multi.use(compile_time_constant_c_test_01_multi.m3);
+  };
+  dart.fn(compile_time_constant_c_test_01_multi.main, VoidTodynamic());
+  // Exports:
+  exports.compile_time_constant_c_test_01_multi = compile_time_constant_c_test_01_multi;
+});