2bf71f888f
Replaces the graph-based liveness analyzer in the bytecode graph builder with an initial bytecode-based liveness analysis pass, which is added to the existing loop extent analysis. Now the StateValues in the graph have their inputs initialised to optimized_out, rather than being modified after the graph is built. Review-Url: https://codereview.chromium.org/2523893003 Cr-Commit-Position: refs/heads/master@{#41355}
55 lines
1.8 KiB
JavaScript
55 lines
1.8 KiB
JavaScript
// Copyright 2015 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: --noanalyze-environment-liveness
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Debug = debug.Debug
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listenerComplete = false;
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breakPointCount = 0;
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exception = null;
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function listener(event, exec_state, event_data, data) {
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if (event != Debug.DebugEvent.Break) return;
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try {
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breakPointCount++;
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if (breakPointCount == 1) {
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// Break point in initializer for parameter `a`, invoked by
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// initializer for parameter `b`
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assertEquals('default', exec_state.frame(0).evaluate('mode').value());
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assertTrue(exec_state.frame(1).evaluate('b').isUndefined());
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assertTrue(exec_state.frame(1).evaluate('c').isUndefined());
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} else if (breakPointCount == 2) {
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// Break point in IIFE initializer for parameter `c`
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assertEquals('modeFn', exec_state.frame(1).evaluate('a.name').value());
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assertEquals('default', exec_state.frame(1).evaluate('b').value());
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assertTrue(exec_state.frame(1).evaluate('c').isUndefined());
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} else if (breakPointCount == 3) {
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// Break point in function body --- `c` parameter is shadowed
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assertEquals('modeFn', exec_state.frame(0).evaluate('a.name').value());
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assertEquals('default', exec_state.frame(0).evaluate('b').value());
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assertEquals('local', exec_state.frame(0).evaluate('d').value());
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}
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} catch (e) {
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exception = e;
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}
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};
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// Add the debug event listener.
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Debug.setListener(listener);
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function f(a = function modeFn(mode) { debugger; return mode; },
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b = a("default"),
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c = (function() { debugger; })()) {
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var d = 'local';
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debugger;
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};
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f();
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// Make sure that the debug event listener vas invoked.
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assertEquals(3, breakPointCount);
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assertNull(exception);
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