v8/test/mjsunit/regress/regress-crbug-656275.js

// 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

var a = 1;

function foo(x) {
  a = Math.fround(x + 1);
};
%PrepareFunctionForOptimization(foo);
foo(1);
foo(1);
%OptimizeFunctionOnNextCall(foo);
foo(1.3);