Fix Array index dehoisting.

test/mjsunit/regress/regress-264203.js

Index: test/mjsunit/regress/regress-264203.js
diff --git a/test/mjsunit/regress/regress-2813.js b/test/mjsunit/regress/regress-264203.js
similarity index 90%
copy from test/mjsunit/regress/regress-2813.js
copy to test/mjsunit/regress/regress-264203.js
index 97ae43b316a2177596927cf5465fa2214cc11c61..fa0075662575d85241b6af82c5945cca32938991 100644
--- a/test/mjsunit/regress/regress-2813.js
+++ b/test/mjsunit/regress/regress-264203.js
@@ -28,17 +28,17 @@
 // Flags: --allow-natives-syntax
 
 function foo(x) {
-  var a = x + 1;
-  var b = x + 2;
-  if (x != 0) {
-    if (x > 0 & x < 100) {
-      return a;
-    }
+  var a = [1, 2, 3, 4, 5, 6, 7, 8];
+  a[x + 5];
+  var result;
+  for (var i = 0; i < 3; i++) {
+    result = a[0 - x];
   }
-  return 0;
+  return result;
 }
 
-assertEquals(0, foo(0));
-assertEquals(0, foo(0));
+foo(0);
+foo(0);
 %OptimizeFunctionOnNextCall(foo);
-assertEquals(3, foo(2));
+var r = foo(-2);
+assertEquals(3, r);