[asm] Fix lots of invalid asm.js tests

test/mjsunit/asm/word32ror.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 rol = (function Module(stdlib, foreign, heap) {
   "use asm";
   function rol(x, y) {
     x = x | 0;
     y = y | 0;
-    return (x << y) | (x >>> (32 - y));
+    return (x << y) | (x >>> (32 - y)) | 0;
   }
   return { rol: rol };
 })(stdlib, foreign, heap).rol;
 
 assertEquals(10, rol(10, 0));
 assertEquals(2, rol(1, 1));
 assertEquals(0x40000000, rol(1, 30));
 assertEquals(-0x80000000, rol(1, 31));
 
 var ror = (function Module(stdlib, foreign, heap) {
   "use asm";
   function ror(x, y) {
     x = x | 0;
     y = y | 0;
-    return (x << (32 - y)) | (x >>> y);
+    return (x << (32 - y)) | (x >>> y) | 0;
   }
   return { ror: ror };
 })(stdlib, foreign, heap).ror;
 
 assertEquals(10, ror(10, 0));
 assertEquals(-0x80000000, ror(1, 1));
 assertEquals(0x40000000, ror(1, 2));
 assertEquals(2, ror(1, 31));