Check in codegen test expectations.

test/codegen/expect/language/field_optimization3_test.js

+dart_library.library('language/field_optimization3_test', null, /* Imports */[
+  'dart_sdk',
+  'expect'
+], function load__field_optimization3_test(exports, dart_sdk, expect) {
+  'use strict';
+  const core = dart_sdk.core;
+  const dart = dart_sdk.dart;
+  const dartx = dart_sdk.dartx;
+  const expect$ = expect.expect;
+  const field_optimization3_test = Object.create(null);
+  let VoidTodynamic = () => (VoidTodynamic = dart.constFn(dart.definiteFunctionType(dart.dynamic, [])))();
+  field_optimization3_test.A = class A extends core.Object {
+    new() {
+      this.a = 0;
+      this.b = 0;
+    }
+    foo() {
+      let c = dart.notNull(this.b) + 27;
+      for (let i = 0; i < 1; i++) {
+        for (let j = 0; j < 1; j++) {
+          expect$.Expect.equals(50, c + 23);
+        }
+      }
+      return dart.notNull(this.a) > 0.2;
+    }
+    setA(value) {
+      this.a = core.int._check(value);
+    }
+    setB(value) {
+      this.b = core.int._check(value);
+    }
+    ['>'](other) {
+      return dart.equals(other, 0.2);
+    }
+  };
+  dart.setSignature(field_optimization3_test.A, {
+    methods: () => ({
+      foo: dart.definiteFunctionType(dart.dynamic, []),
+      setA: dart.definiteFunctionType(dart.dynamic, [dart.dynamic]),
+      setB: dart.definiteFunctionType(dart.dynamic, [dart.dynamic]),
+      '>': dart.definiteFunctionType(dart.dynamic, [dart.dynamic])
+    })
+  });
+  field_optimization3_test.main = function() {
+    let a = new field_optimization3_test.A();
+    expect$.Expect.isFalse(a.foo());
+    a.setA(new field_optimization3_test.A());
+    a.setB(0);
+    expect$.Expect.isTrue(a.foo());
+  };
+  dart.fn(field_optimization3_test.main, VoidTodynamic());
+  // Exports:
+  exports.field_optimization3_test = field_optimization3_test;
+});