Added optimization for div/mod by constant power of 2.

test/mjsunit/div-mod.js

 // Copyright 2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 136 matching lines @@
   for (var i = 0; i < example_numbers.length; i++) {
     for (var j = 0; j < example_numbers.length; j++) {
       var a = example_numbers[i];
       var b = example_numbers[j];
       doTest(a,b);
       doTest(-a,b);
       doTest(a,-b);
       doTest(-a,-b);
     }
   }
-})()
+})();
+
+
+(function () {
+  // Edge cases
+  var zero = 0;
+  var minsmi32 = -0x40000000;
+  var minsmi64 = -0x80000000;
+  var somenum = 3532;
+  assertEquals(-0, zero / -1, "0 / -1");
+  assertEquals(1, minsmi32 / -0x40000000, "minsmi/minsmi-32");
+  assertEquals(1, minsmi64 / -0x80000000, "minsmi/minsmi-64");
+  assertEquals(somenum, somenum % -0x40000000, "%minsmi-32");
+  assertEquals(somenum, somenum % -0x80000000, "%minsmi-64");
+})();