Fix issue 12369: compare kind of unary math instruction and not only the inputs to determine if at…

tests/language/math_vm_test.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 // Tests that the VM does not crash on weird corner cases of class Math.
 // VMOptions=--optimization_counter_threshold=100
 
 library math_vm_test;
 
 import "package:expect/expect.dart";
 import 'dart:math';
@@ skipping 26 matching lines @@
     Expect.equals(false, testParseInt(5));
     Expect.equals(false, testSqrt(const FakeNumber()));
   }
 }
 
 testDoublePow() {
   Expect.equals((1 << 32).toDouble(), pow(2.0, 32));
 }
 
 
+testSinCos(a) {
+  double sVal = sin(a);
+  double cVal = cos(a);
+  return sVal + cVal;
+}
+
 main() {
+  const double value = 1.54;
+  final firstRes = testSinCos(value);
   for (int i = 0; i < 200; i++) {
     MathTest.testMain();
     testDoublePow();
+    testSinCos(value);
   }
+  Expect.equals(firstRes, testSinCos(value));
 }