[ic] Don't share LoadGlobalIC slots inside typeof and outside typeof.

test/cctest/test-api-interceptors.cc

 // 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.
 
 #include <stdlib.h>
 
 #include "test/cctest/test-api.h"
 
 #include "include/v8-util.h"
 #include "src/api.h"
@@ skipping 855 matching lines @@
   i::Handle<i::JSReceiver> global_proxy =
       v8::Utils::OpenHandle<Object, i::JSReceiver>(context->Global());
   CHECK(global_proxy->IsJSGlobalProxy());
   i::Handle<i::JSGlobalObject> global(
       i::JSGlobalObject::cast(global_proxy->map()->prototype()));
   CHECK(global->map()->has_named_interceptor());
 
   v8::Local<Value> value = CompileRun(
       "var f = function() { "
       "  try {"
-      "    x;"
+      "    x1;"
+      "  } catch(e) {"
+      "  }"
+      "  return typeof x1 === 'undefined';"
+      "};"
+      "for (var i = 0; i < 10; i++) {"
+      "  f();"
+      "};"
+      "f();");
+  CHECK_EQ(true, value->BooleanValue(context.local()).FromJust());
+
+  value = CompileRun(
+      "var f = function() { "
+      "  try {"
+      "    x2;"
       "    return false;"
       "  } catch(e) {"
       "    return true;"
       "  }"
       "};"
       "for (var i = 0; i < 10; i++) {"
       "  f();"
       "};"
       "f();");
   CHECK_EQ(true, value->BooleanValue(context.local()).FromJust());
 
   value = CompileRun(
       "var f = function() { "
       "  try {"
-      "    typeof(x);"
+      "    typeof(x3);"
       "    return true;"
       "  } catch(e) {"
       "    return false;"
       "  }"
       "};"
       "for (var i = 0; i < 10; i++) {"
       "  f();"
       "};"
       "f();");
   CHECK_EQ(true, value->BooleanValue(context.local()).FromJust());
@@ skipping 3070 matching lines @@
             ->Set(env.local(), v8_str("Fun"),
                   fun_templ->GetFunction(env.local()).ToLocalChecked())
             .FromJust());
 
   CompileRun(
       "var f = new Fun();"
       "Number.prototype.__proto__ = f;"
       "var a = 42;"
       "for (var i = 0; i<3; i++) { a.foo; }");
 }