Do not set target in deoptimized code in keyed store IC.

BUG=chromium:460937
R=ishell@chromium.org
LOG=n

Review URL: https://codereview.chromium.org/989093002

Cr-Commit-Position: refs/heads/master@{#27064}

src/ic/ic.cc

@@ -2181,7 +2181,9 @@ MaybeHandle<Object> KeyedStoreIC::Store(Handle<Object> object,
     TRACE_GENERIC_IC(isolate(), "KeyedStoreIC", "slow stub");
   }
   DCHECK(!stub.is_null());
+  if (!AddressIsDeoptimizedCode()) {
     set_target(*stub);
+  }
   TRACE_IC("StoreIC", key);
 
   return store_handle;

test/mjsunit/regress/regress-460937.js

+// Copyright 2015 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
+
+function f() {
+  var a = new Array(100000);
+  var i = 0;
+  while (!%HasFastDoubleElements(a)) {
+    a[i] = i;
+    i += 0.1;
+  }
+  a[1] = 1.5;
+}
+
+f();
+%OptimizeFunctionOnNextCall(f);
+f();