v8/test/mjsunit/compiler/deopt-eager-var-mutation-ite.js

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// Copyright 2017 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
var foo = { x : 0, y : 1 }
function f(b) {
h(b);
return foo.x;
}
function h(b) {
g(b);
return foo.x;
}
function g(b) {
if (b) {
foo = { x : 536 };
} // It should trigger an eager deoptimization when b=true.
}
f(false); f(false);
%OptimizeFunctionOnNextCall(f);
f(false);
assertEquals(f(true), 536);