Alexander Markov
9fda4c1101
This is a workaround to https://github.com/dart-lang/sdk/issues/37944. Closure call instructions are not tracked by code coverage, so this change avoids generating them in bytecode if incremental kernel compiler is used - when vm-service is enabled with command-line option and code coverage may be needed. Change-Id: Ifb3bc5e90a9f8ccb04073994d761bc301bc274ab Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/114045 Reviewed-by: Régis Crelier <regis@google.com> Reviewed-by: Ryan Macnak <rmacnak@google.com> Commit-Queue: Alexander Markov <alexmarkov@google.com>
92 lines
3.1 KiB
Dart
92 lines
3.1 KiB
Dart
// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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library vm.bytecode.options;
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/// Collection of options for bytecode generator.
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class BytecodeOptions {
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static Map<String, String> commandLineFlags = {
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'annotations': 'Emit Dart annotations',
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'local-var-info': 'Emit debug information about local variables',
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'debugger-stops': 'Emit bytecode instructions for stopping in the debugger',
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'show-bytecode-size-stat': 'Show bytecode size breakdown',
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'source-positions': 'Emit source positions',
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'instance-field-initializers': 'Emit separate instance field initializers',
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'keep-unreachable-code':
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'Do not remove unreachable code (useful if collecting code coverage)',
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'avoid-closure-call-instructions':
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'Do not emit closure call instructions (useful if collecting code '
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'coverage, as closure call instructions are not tracked by code '
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'coverage)',
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};
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bool enableAsserts;
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bool causalAsyncStacks;
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bool emitSourcePositions;
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bool emitSourceFiles;
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bool emitLocalVarInfo;
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bool emitDebuggerStops;
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bool emitAnnotations;
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bool emitInstanceFieldInitializers;
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bool omitAssertSourcePositions;
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bool keepUnreachableCode;
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bool avoidClosureCallInstructions;
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bool showBytecodeSizeStatistics;
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Map<String, String> environmentDefines;
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BytecodeOptions(
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{this.enableAsserts = false,
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this.causalAsyncStacks,
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this.emitSourcePositions = false,
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this.emitSourceFiles = false,
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this.emitLocalVarInfo = false,
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this.emitDebuggerStops = false,
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this.emitAnnotations = false,
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this.emitInstanceFieldInitializers = false,
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this.omitAssertSourcePositions = false,
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this.keepUnreachableCode = false,
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this.avoidClosureCallInstructions = false,
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this.showBytecodeSizeStatistics = false,
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this.environmentDefines = const <String, String>{}}) {
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causalAsyncStacks ??=
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environmentDefines['dart.developer.causal_async_stacks'] == 'true';
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}
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void parseCommandLineFlags(List<String> flags) {
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if (flags == null) {
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return;
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}
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for (String flag in flags) {
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switch (flag) {
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case 'source-positions':
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emitSourcePositions = true;
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break;
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case 'local-var-info':
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emitLocalVarInfo = true;
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break;
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case 'debugger-stops':
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emitDebuggerStops = true;
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break;
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case 'annotations':
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emitAnnotations = true;
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break;
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case 'instance-field-initializers':
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emitInstanceFieldInitializers = true;
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break;
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case 'keep-unreachable-code':
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keepUnreachableCode = true;
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break;
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case 'avoid-closure-call-instructions':
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avoidClosureCallInstructions = true;
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break;
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case 'show-bytecode-size-stat':
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showBytecodeSizeStatistics = true;
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break;
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default:
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throw 'Unexpected bytecode flag $flag';
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}
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}
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}
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}
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