[asm] Fix lots of invalid asm.js tests

test/mjsunit/asm/uint32mod.js

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 var stdlib = {};
 var foreign = {};
 var heap = new ArrayBuffer(64 * 1024);
 
 var mod = (function Module(stdlib, foreign, heap) {
   "use asm";
   function mod(dividend, divisor) {
-    dividend = dividend >>> 0;
-    divisor = divisor >>> 0;
-    return (dividend % divisor) >>> 0;
+    dividend = dividend | 0;
+    divisor = divisor | 0;
+    return ((dividend >>> 0) % (divisor >>> 0)) | 0;
   }
   return { mod: mod };
 })(stdlib, foreign, heap).mod;
 
 var divisors = [0, 1, 3, 4, 10, 42, 64, 100, 1024, 2147483647, 4294967295];
 for (var i in divisors) {
   var divisor = divisors[i];
   for (var dividend = 0; dividend < 4294967296; dividend += 3999773) {
-    assertEquals((dividend % divisor) >>> 0, mod(dividend, divisor));
+    assertEquals((dividend % divisor) | 0, mod(dividend, divisor));
   }
 }