Prohibit from eliminating non-local temporary variables

js/js.translator/testData/js-optimizer/temporary-assignment/skipsGlobalDeclarations.optimized.js

@@ -0,0 +1,24 @@
+var $tmp;
+
+function test(n) {
+    if (n >= 0) {
+        $tmp = n;
+    }
+    else {
+        $tmp = -n;
+    }
+    var result = $tmp;
+    return result;
+}
+
+function box() {
+    var result = test(20);
+    if (result != 20) return "fail1: " + result;
+
+    result = test(-20);
+    if (result != 20) return "fail2: " + result;
+
+    if ($tmp != 20) return "fail3: " + result;
+
+    return "OK"
+}