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}
66 lines
2.5 KiB
JavaScript
66 lines
2.5 KiB
JavaScript
// Copyright 2009 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Flags: --expose-debug-as debug --noanalyze-environment-liveness
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// Get the Debug object exposed from the debug context global object.
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Debug = debug.Debug
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var listenerComplete = false;
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var exception = false;
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function listener(event, exec_state, event_data, data) {
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try {
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if (event == Debug.DebugEvent.Break) {
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var a = exec_state.frame(0).evaluate("a");
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assertEquals('object', a.type());
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assertEquals('Object', a.className());
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// Indicate that all was processed.
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listenerComplete = true;
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}
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} catch (e) {
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print(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 callDebugger() {
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// Add set constructor field to a non-function value.
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var a = {constructor:true};
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debugger;
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}
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callDebugger();
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// Make sure that the debug event listener vas invoked.
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assertFalse(exception, "exception in listener")
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assertTrue(listenerComplete, "listener did not run to completion");
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