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PR-URL: https://github.com/nodejs/node/pull/44741 Fixes: https://github.com/nodejs/node/issues/44650 Fixes: https://github.com/nodejs/node/issues/37472 Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl> Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>
68 lines
2.0 KiB
JavaScript
68 lines
2.0 KiB
JavaScript
// Copyright 2021 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 --turbo-optimize-apply --turbofan
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// Flags: --no-always-turbofan
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// These tests do not work well if we flush the feedback vector, which causes
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// deoptimization.
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// Flags: --no-stress-flush-code --no-flush-bytecode
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// The test relies on optimizing/deoptimizing at predictable moments, so
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// this is not suitable for deoptimization fuzzing.
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// Flags: --deopt-every-n-times=0 --interrupt-budget=1024
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// Tests for optimization of CallWithSpread and CallWithArrayLike.
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// Test deopt when array map changes.
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(function () {
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"use strict";
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var sum_js_got_interpreted = true;
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function sum_js(a, b, c) {
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sum_js_got_interpreted = %IsBeingInterpreted();
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return a + b + c;
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}
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function foo(x, y, z, str) {
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let v = [x, y, z];
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if (str) {
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v[0] = str;
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}
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return sum_js.apply(null, v);
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}
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%PrepareFunctionForOptimization(sum_js);
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for (let i = 0; i < 5; i++) {
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%PrepareFunctionForOptimization(foo);
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assertEquals(78, foo(26, 6, 46, null));
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assertTrue(sum_js_got_interpreted);
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// Compile function foo; inlines 'sum_js' into 'foo'.
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%OptimizeFunctionOnNextCall(foo);
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assertEquals(78, foo(26, 6, 46, null));
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assertOptimized(foo);
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%PrepareFunctionForOptimization(foo);
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if (i < 3) {
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assertFalse(sum_js_got_interpreted);
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} else {
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// i: 3: Speculation mode prevents optimization of sum_js.apply() call.
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assertTrue(sum_js_got_interpreted);
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}
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// This should deoptimize:
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// i: 0: Deopt soft: insufficient type feedback for generic keyed access.
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// i: 1,2: Deopt eager: wrong map.
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// i: 3: Won't deopt anymore.
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assertEquals("v8646", foo(26, 6, 46, "v8"));
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assertTrue(sum_js_got_interpreted);
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if (i < 3) {
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assertUnoptimized(foo);
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} else {
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assertOptimized(foo);
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%PrepareFunctionForOptimization(foo);
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}
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}
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})();
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