Fix unsigned comparisons.

test/mjsunit/regress/regress-3380.js

Index: test/mjsunit/regress/regress-3380.js
diff --git a/test/mjsunit/regress/regress-349885.js b/test/mjsunit/regress/regress-3380.js
similarity index 62%
copy from test/mjsunit/regress/regress-349885.js
copy to test/mjsunit/regress/regress-3380.js
index dd3e79526041b0362434608b81429d83e18ae8ef..2fae459b3b46e768e4612359bcdc964350a9d5dd 100644
--- a/test/mjsunit/regress/regress-349885.js
+++ b/test/mjsunit/regress/regress-3380.js
@@ -4,12 +4,13 @@
 
 // Flags: --allow-natives-syntax
 
-// The bug 349885
-
 function foo(a) {
-  a[292755462] = new Object();
+  return (a[0] >>> 0) > 0;
 }
-foo(new Array(5));
-foo(new Array(5));
+
+var a = new Uint32Array([4]);
+var b = new Uint32Array([0x80000000]);
+assertTrue(foo(a));
+assertTrue(foo(a));
 %OptimizeFunctionOnNextCall(foo);
-foo(new Array(10));
+assertTrue(foo(b))