918fe04351
PR-URL: https://github.com/nodejs/node/pull/58070 Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com> Reviewed-By: Darshan Sen <raisinten@gmail.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
59 lines
1.5 KiB
JavaScript
59 lines
1.5 KiB
JavaScript
// Copyright 2024 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --allow-natives-syntax --turbolev --turbofan
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// Flags: --no-always-turbofan --no-maglev-loop-peeling
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// Creating an object with 2 Smi fields.
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let o = { x : 42, y : 19 };
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// Making {o}'s fields non-const.
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o.x = 43;
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o.y = 20;
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let holey_double_arr = [ -0.0, 2.2, , 4.4 ];
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function foo(x, y) {
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let holey_f64_1 = holey_double_arr[0];
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let phi_1 = holey_f64_1; // HoleyFloat64 input to the phi
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for (let i = 0.5; i < x; i += 1) {
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i += phi_1; // Float64 use to the phi
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phi_1 = 51; // Smi input to the phi
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}
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o.x = phi_1;
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let holey_f64_2 = holey_double_arr[1];
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let phi_2 = holey_f64_2; // HoleyFloat64 input to the phi
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for (let i = 0.5; i < y; i += 1) {
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i += phi_2; // Float64 use to the phi
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phi_2 = 40; // Smi input to the phi
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}
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o.y = phi_2;
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}
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%PrepareFunctionForOptimization(foo);
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foo(4, 5);
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assertEquals({x : 51, y : 40}, o);
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%OptimizeFunctionOnNextCall(foo);
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foo(4, 5);
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assertEquals({x : 51, y : 40}, o);
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assertOptimized(foo);
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// Triggering a deopt because of -0.0
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foo(0, 5);
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assertEquals({x : -0.0, y : 40}, o);
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assertSame(o.x, -0.0);
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assertUnoptimized(foo);
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%OptimizeFunctionOnNextCall(foo);
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foo(4, 5);
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assertEquals({x : 51, y : 40}, o);
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assertOptimized(foo);
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// Triggering deopt because of regular non-smi float64
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foo(4, 0);
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assertEquals({x : 51, y : 2.2}, o);
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assertUnoptimized(foo);
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