[asm] Fix lots of invalid asm.js tests

test/mjsunit/asm/do-while-false.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.
 
 function Module() {
   "use asm";
 
   function d0() {
     do { } while(false);
     return 110;
@@ skipping 23 matching lines @@
 
   function d5(a) {
     a = a | 0;
     do { if (a) return 118; } while(false);
     return 119;
   }
 
   function d6(a) {
     a = a | 0;
     do {
-      if (a == 0) return 120;
-      if (a == 1) break;
-      if (a == 2) return 122;
-      if (a == 3) continue;
-      if (a == 4) return 124;
+      if ((a | 0) == 0) return 120;
+      if ((a | 0) == 1) break;
+      if ((a | 0) == 2) return 122;
+      if ((a | 0) == 3) continue;
+      if ((a | 0) == 4) return 124;
     } while(false);
     return 125;
   }
 
   return {d0: d0, d1: d1, d2: d2, d3: d3, d4: d4, d5: d5, d6: d6};
 }
 
 var m = Module();
 
 assertEquals(110, m.d0());
@@ skipping 10 matching lines @@
 
 assertEquals(118, m.d5(1));
 assertEquals(119, m.d5(0));
 
 assertEquals(120, m.d6(0));
 assertEquals(125, m.d6(1));
 assertEquals(122, m.d6(2));
 assertEquals(125, m.d6(3));
 assertEquals(124, m.d6(4));
 assertEquals(125, m.d6(5));