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// Copyright 2016 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 --expose-gc
var training = {};
training.a = "nop";
training.slow = "nop";
delete training.slow; // Dictionary-mode properties => slow-mode for-in.
var keepalive = {};
keepalive.a = "nop"; // Keep a map early in the transition chain alive.
function GetReal() {
var r = {};
r.a = "nop";
r.b = "nop";
r.c = "dictionarize",
r.d = "gc";
r.e = "result";
return r;
};
function SideEffect(object, action) {
if (action === "dictionarize") {
delete object.a;
} else if (action === "gc") {
gc();
}
}
function foo(object) {
for (var key in object) {
SideEffect(object, object[key]);
}
return key;
}
// Collect type feedback for slow-mode for-in.
foo(training);
SideEffect({a: 0}, "dictionarize");
SideEffect({}, "gc");
// Compile for slow-mode objects...
%OptimizeFunctionOnNextCall(foo);
// ...and pass in a fast-mode object.
assertEquals("e", foo(GetReal()));
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