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

24 lines
818 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_heap_number(n) {
let f64 = 17.72;
if (n < 0) {
// We won't execute this code when collecting feedback, which means that
// Maglev will do an unconditional deopt here (and {f64} will thus have no
// use besides the frame state for this deopt).
return f64 + 5;
}
return n + 2;
}
%PrepareFunctionForOptimization(dematerialized_heap_number);
assertEquals(7, dematerialized_heap_number(5));
%OptimizeFunctionOnNextCall(dematerialized_heap_number);
assertEquals(7, dematerialized_heap_number(5));
assertEquals(22.72, dematerialized_heap_number(-1));