[asm] Fix lots of invalid asm.js tests

test/mjsunit/asm/switch.js

Index: test/mjsunit/asm/switch.js
diff --git a/test/mjsunit/asm/switch.js b/test/mjsunit/asm/switch.js
index 5cb6329e4331053b7d202fa379830ff466564a72..d02e661eeb7be0a7aac6a64adea3dd827741ee0e 100644
--- a/test/mjsunit/asm/switch.js
+++ b/test/mjsunit/asm/switch.js
@@ -11,11 +11,12 @@ var switch1 = (function(stdlib, foreign, heap) {
   "use asm";
   function switch1(i) {
     i = i|0;
-    switch (i) {
+    switch (i | 0) {
       case 0: return 1;
       case 1: return 2;
       default: return i|0;
     }
+    return i | 0;
   }
   return { switch1: switch1 };
 })(stdlib, foreign, heap).switch1;
@@ -32,7 +33,7 @@ var switch2 = (function(stdlib, foreign, heap) {
   function switch2(i) {
     i = i|0;
     var j = 0;
-    switch (i) {
+    switch (i | 0) {
       case 0: j = 1; break;
       case 1: j = 2; break;
       case 2: j = 3; break;
@@ -56,7 +57,7 @@ var switch3 = (function(stdlib, foreign, heap) {
   function switch3(i) {
     i = i|0;
     var j = 0;
-    switch (i) {
+    switch (i | 0) {
       case 0:
       case 1: j = 1; break;
       case 2:
@@ -85,7 +86,7 @@ var switch4 = (function(stdlib, foreign, heap) {
   "use asm";
   function switch4(i) {
     i = i|0;
-    switch (i) {
+    switch (i | 0) {
       case -1:
       case 1:
         return 0;
@@ -105,6 +106,7 @@ var switch4 = (function(stdlib, foreign, heap) {
       default:
         return 4;
     }
+    return 0;  // needed for validation
   }
   return { switch4: switch4 };
 })(stdlib, foreign, heap).switch4;