123c38a5aa
When --maglev is set, tier up to Maglev from unoptimized tiers based on --interrupt-budget-for-maglev, initially set to 40KB (which should very roughly by 1/10th of the time until the TF tierup decision is made). On the first interrupt, a non-concurrent optimization to Maglev is requested, which the next call to the marked function will perform. - There is no support for tiering from Maglev to TF yet. - Maglev's language support is minimal and tests are not expected to pass with --maglev. - Disable --maglev by default for now. Drive-by: fixes related to Maglev flag definitions. Bug: v8:7700 Change-Id: I121bb3f4f3830fdd20e1d4a12d3e04f08a99be38 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3500302 Reviewed-by: Leszek Swirski <leszeks@chromium.org> Commit-Queue: Jakob Gruber <jgruber@chromium.org> Cr-Commit-Position: refs/heads/main@{#79328}
26 lines
529 B
JavaScript
26 lines
529 B
JavaScript
// Copyright 2022 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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//
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// Flags: --allow-natives-syntax --maglev
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function f(i, j) {
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var x = 1;
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var y = 2;
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if (i) {
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x = y;
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if (j) {
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x = 3
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}
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}
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return x;
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}
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%PrepareFunctionForOptimization(f);
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assertEquals(1, f(false, true));
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%OptimizeMaglevOnNextCall(f);
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assertEquals(1, f(false, false));
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assertEquals(2, f(true, false));
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assertEquals(3, f(true, true));
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