54e515220d
In addition to the previous change enabling forced FunctionDeclaration allocation when block code coverage is enabled, enable it now for all (non-best-effort) code coverage by reading off the coverage mode from the isolate (rather than relying on the presence of a source range map). Bug: chromium:927464 Change-Id: I26f86c9fbebc0df52d5cdeff3ca1095215a6d912 Reviewed-on: https://chromium-review.googlesource.com/c/1456041 Commit-Queue: Leszek Swirski <leszeks@chromium.org> Reviewed-by: Jakob Gruber <jgruber@chromium.org> Cr-Commit-Position: refs/heads/master@{#59626}
67 lines
1.4 KiB
JavaScript
67 lines
1.4 KiB
JavaScript
// Copyright 2017 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 --no-always-opt --no-stress-flush-bytecode
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// Flags: --no-stress-incremental-marking
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// Files: test/mjsunit/code-coverage-utils.js
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// Test precise code coverage.
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// Without precise coverage enabled, we lose coverage data to the GC.
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TestCoverage(
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"call an IIFE",
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`
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(function f() {})();
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`,
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undefined // The IIFE has been garbage-collected.
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);
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TestCoverage(
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"call locally allocated function",
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`
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for (var i = 0; i < 10; i++) {
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let f = () => 1;
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i += f();
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}
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`,
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undefined
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);
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// This does not happen with precise coverage enabled.
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%DebugTogglePreciseCoverage(true);
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TestCoverage(
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"call an IIFE",
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`
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(function f() {})();
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`,
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[{"start":0,"end":20,"count":1},{"start":1,"end":16,"count":1}]
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);
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TestCoverage(
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"call locally allocated function",
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`
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for (var i = 0; i < 10; i++) {
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let f = () => 1;
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i += f();
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}
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`,
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[{"start":0,"end":63,"count":1},{"start":41,"end":48,"count":5}]
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);
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TestCoverage(
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"https://crbug.com/927464",
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`
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!function f() { // 0000
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function unused() { nop(); } // 0100
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nop(); // 0150
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}(); // 0200
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`,
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[{"start":0,"end":199,"count":1},
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{"start":1,"end":151,"count":1},
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{"start":52,"end":80,"count":0}]
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);
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%DebugTogglePreciseCoverage(false);
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