Fix for failing asserts in HBoundsCheck code generation on x64: use proper cmp operation width inst…

test/mjsunit/regress/regress-crbug-349465.js

Index: test/mjsunit/regress/regress-crbug-349465.js
diff --git a/test/mjsunit/regress/regress-crbug-349465.js b/test/mjsunit/regress/regress-crbug-349465.js
new file mode 100644
index 0000000000000000000000000000000000000000..335ea1e1a41337f5107161e7294038a662fc7d58
--- /dev/null
+++ b/test/mjsunit/regress/regress-crbug-349465.js
@@ -0,0 +1,17 @@
+// Copyright 2014 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --allow-natives-syntax --debug-code --use-gvn
+
+function f(a, base) {
+  a[base] = 1;
+  a[base + 4] = 2;
+  a[base] = 3;
+}
+var a1 = new Array(1024);
+var a2 = new Array(128);
+f(a1, 1);
+f(a2, -2);
+%OptimizeFunctionOnNextCall(f);
+f(a1, -2);