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// Copyright 2023 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: --maglev --allow-natives-syntax
function f(x) {
x++; // Making sure {x} has a Float64 alternative
let phi = x || 0; // Creating a Phi whose inputs are Smi and Float64. Phi
// untagging will make this a Float64 phi.
phi + 1; // Float64 operation with {phi}, which will cause insert a
// CheckedNumberToFloat64(phi). After phi untagging, the
// CheckedNumberToFloat64 will be killed, resulting in the addition
// to take {phi} directly as input.
phi << 4; // Int operation with {phi}, which will produce a
// TruncateNumberToInt32(phi). TruncateNumberToInt32 doesn't check
// if the input is a Number, and call into runtime if necessary to
// to the truncation, so it can't deopt. After Phi untagging, this
// should be replaced by a Float64->Int32 truncation
// (TruncateFloat64ToInt32), which shouldn't deopt either (because
// we can't replace a non-deopting node by a deopting one).
}
%PrepareFunctionForOptimization(f);
f(1.5);
%OptimizeMaglevOnNextCall(f);
f(1.5);
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