Move div by zero testing into its own test.

tests/language/integer_division_by_zero_test.dart

 // Copyright (c) 2013, 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.
-// Test division by power of two.
+// Test integer division by zero.
 // Test that results before and after optimization are the same.
 // VMOptions=--optimization-counter-threshold=10 --no-use-osr
 
 import "package:expect/expect.dart";
 
-// [function, [list of tuples argument/result]].
-var expectedResults =
-  [ [divBy1,
-      [[134217730, 134217730],
-       [-134217730, -134217730],
-       [10, 10],
-       [-10, -10]]],
-    [divByNeg1,
-      [[134217730, -134217730],
-       [-134217730, 134217730],
-       [10, -10],
-       [-10, 10]]],
-    [divBy2,
-      [[134217730, 67108865],
-       [-134217730, -67108865],
-       [10, 5],
-       [-10, -5]]],
-    [divByNeg2,
-      [[134217730, -67108865],
-       [-134217730, 67108865],
-       [10, -5],
-       [-10, 5]]],
-    [divBy4,
-      [[134217730, 33554432],
-       [-134217730, -33554432],
-       [10, 2],
-       [-10, -2]]],
-    [divByNeg4,
-      [[134217730, -33554432],
-       [-134217730, 33554432],
-       [10, -2],
-       [-10, 2]]],
-    [divBy134217728,
-      [[134217730, 1],
-       [-134217730, -1],
-       [10, 0],
-       [-10, 0]]],
-    [divByNeg134217728,
-      [[134217730, -1],
-       [-134217730, 1],
-       [10, 0],
-       [-10, 0]]],
-    // Use different functions for 64 bit arguments.
-    [divBy4_,
-      [[549755813990, 137438953497],
-       [-549755813990, -137438953497],
-       [288230925907525632, 72057731476881408],
-       [-288230925907525632, -72057731476881408]]],
-    [divByNeg4_,
-      [[549755813990, -137438953497],
-       [-549755813990, 137438953497],
-       [288230925907525632, -72057731476881408],
-       [-288230925907525632, 72057731476881408]]],
-    [divBy549755813888,
-      [[549755813990, 1],
-       [-549755813990, -1],
-       [288230925907525632, 524289],
-       [-288230925907525632, -524289]]],
-    [divByNeg549755813888,
-      [[549755813990, -1],
-       [-549755813990, 1],
-       [288230925907525632, -524289],
-       [-288230925907525632, 524289]]],
-  ];
-
 divBy0(a) => a ~/ 0;
-divBy1(a) => a ~/ 1;
-divByNeg1(a) => a ~/ -1;
-divBy2(a) => a ~/ 2;
-divByNeg2(a) => a ~/ -2;
-divBy4(a) => a ~/ 4;
-divByNeg4(a) => a ~/ -4;
-divBy134217728(a) => a ~/ 134217728;
-divByNeg134217728(a) => a ~/ -134217728;
-
-divBy4_(a) => a ~/ 4;
-divByNeg4_(a) => a ~/ -4;
-divBy549755813888(a) => a ~/ 549755813888;
-divByNeg549755813888(a) => a ~/ -549755813888;
 
 main() {
-  for (int i = 0; i < 20; i++) {
-    for (var e in expectedResults) {
-      Function f = e[0];
-      List values = e[1];
-      for (var v in values) {
-        int arg = v[0];
-        int res = v[1];
-        Expect.equals(res, f(arg));
-      }
-    }
-    Expect.throws(() => divBy0(4),
-                  (e) => e is IntegerDivisionByZeroException
-                         || e is UnsupportedError);
-  }
+  Expect.throws(() => divBy0(4),
+                (e) => e is IntegerDivisionByZeroException);
 }