Improve escape analysis

test/mjsunit/compiler/escape-analysis-9.js

Index: test/mjsunit/compiler/escape-analysis-9.js
diff --git a/test/mjsunit/compiler/escape-analysis-7.js b/test/mjsunit/compiler/escape-analysis-9.js
similarity index 93%
copy from test/mjsunit/compiler/escape-analysis-7.js
copy to test/mjsunit/compiler/escape-analysis-9.js
index 30105f429a15f8a4186ab64e22fcdc89ce32a3cc..a19786b3609d36f54d4b9a86f211b1732e48503c 100644
--- a/test/mjsunit/compiler/escape-analysis-7.js
+++ b/test/mjsunit/compiler/escape-analysis-9.js
@@ -28,24 +28,25 @@
 // Flags: --allow-natives-syntax --turbo-escape
 //
 
-function f(a) {
-  "use strict";
+function f() {
   return arguments;
 }
 
 function g(a) {
   "use strict";
-  var x = f(1,2,3);
+  var o = f(1,2);
   if (a) {
-    x[1] = 5;
+    o[0] = 5;
   } else {
-    x[1] = 7;
+    o[0] = 7;
   }
 
-  return x[1];
+  return o[0];
 }
 
 assertEquals(7, g());
 assertEquals(7, g());
 %OptimizeFunctionOnNextCall(g);
+assertEquals(5, g(true));
+assertEquals(7, g(false));
 assertEquals(7, g());