Alexander Markov
9503969664
DebugCheck bytecode instruction is generated after parameter variables are declared and copied into their locations in the prologue. It helps debugger to stop in the beginning of a function at the point where parameters can be inspected. It is generated only if '--bytecode-options=debugger-stops' is specified. Change-Id: I0f3b1ea8dc45d762a5dcee75b5d3a4ffc0b2a1b1 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/108371 Reviewed-by: Ryan Macnak <rmacnak@google.com> Reviewed-by: Régis Crelier <regis@google.com> Commit-Queue: Alexander Markov <alexmarkov@google.com>
70 lines
2.1 KiB
Dart
70 lines
2.1 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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};
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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 omitAssertSourcePositions;
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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.omitAssertSourcePositions = 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 '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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