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Kmake/deps/v8/test/mjsunit/turboshaft/maglev-frontend/dematerialized-rest.js
2026-05-26 23:36:42 -07:00

26 lines
851 B
JavaScript

// Copyright 2024 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 --turbolev --turbofan
function dematerialized_rest(n, ...rest) {
if (n < 0) {
// We won't execute this code when collecting feedback, which means that
// Maglev will do an unconditional deopt here (and {rest} will thus have
// no use besides the frame state for this deopt).
n + 5;
return rest;
}
return n + 2;
}
%PrepareFunctionForOptimization(dematerialized_rest);
assertEquals(7, dematerialized_rest(5, 2, 3));
assertEquals(7, dematerialized_rest(5, 2, 3, 4));
%OptimizeFunctionOnNextCall(dematerialized_rest);
assertEquals(7, dematerialized_rest(5, 2, 3));
assertEquals([2, 3, 4], dematerialized_rest(-1, 2, 3, 4));