[turbofan] Properly deal with out-of-bounds fields in EscapeAnalysis.

test/mjsunit/regress/regress-crbug-658185.js

Index: test/mjsunit/regress/regress-crbug-658185.js
diff --git a/test/mjsunit/regress/regress-crbug-630923.js b/test/mjsunit/regress/regress-crbug-658185.js
similarity index 57%
copy from test/mjsunit/regress/regress-crbug-630923.js
copy to test/mjsunit/regress/regress-crbug-658185.js
index ff0d2dd05efbedec15a515545eac2184c36c59f3..60de8d6458d3af2e4b16338eda36ed01a64001f2 100644
--- a/test/mjsunit/regress/regress-crbug-630923.js
+++ b/test/mjsunit/regress/regress-crbug-658185.js
@@ -2,15 +2,19 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --allow-natives-syntax
+// Flags: --allow-natives-syntax --turbo-escape
 
-var o = {};
-function bar(o) {
-  return 1 + (o.t ? 1 : 2);
-}
+var t = 0;
 function foo() {
-  bar(o);
+  var o = {x:1};
+  var p = {y:2.5, x:0};
+  o = [];
+  for (var i = 0; i < 2; ++i) {
+    t = o.x;
+    o = p;
+  }
 }
 foo();
+foo();
 %OptimizeFunctionOnNextCall(foo);
 foo();