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// Copyright 2012 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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// * 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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// 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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// This file defines all of the flags. It is separated into different section,
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// for Debug, Release, Logging and Profiling, etc. To add a new flag, find the
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// correct section, and use one of the DEFINE_ macros, without a trailing ';'.
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// This include does not have a guard, because it is a template-style include,
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// which can be included multiple times in different modes. It expects to have
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// a mode defined before it's included. The modes are FLAG_MODE_... below:
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// We want to declare the names of the variables for the header file. Normally
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// this will just be an extern declaration, but for a readonly flag we let the
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// compiler make better optimizations by giving it the value.
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#if defined(FLAG_MODE_DECLARE)
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#define FLAG_FULL(ftype, ctype, nam, def, cmt) \
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extern ctype FLAG_##nam;
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#define FLAG_READONLY(ftype, ctype, nam, def, cmt) \
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static ctype const FLAG_##nam = def;
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#define DEFINE_implication(whenflag, thenflag)
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// We want to supply the actual storage and value for the flag variable in the
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// .cc file. We only do this for writable flags.
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#elif defined(FLAG_MODE_DEFINE)
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#define FLAG_FULL(ftype, ctype, nam, def, cmt) \
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ctype FLAG_##nam = def;
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#define FLAG_READONLY(ftype, ctype, nam, def, cmt)
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#define DEFINE_implication(whenflag, thenflag)
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// We need to define all of our default values so that the Flag structure can
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// access them by pointer. These are just used internally inside of one .cc,
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// for MODE_META, so there is no impact on the flags interface.
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#elif defined(FLAG_MODE_DEFINE_DEFAULTS)
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#define FLAG_FULL(ftype, ctype, nam, def, cmt) \
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static ctype const FLAGDEFAULT_##nam = def;
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#define FLAG_READONLY(ftype, ctype, nam, def, cmt)
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#define DEFINE_implication(whenflag, thenflag)
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// We want to write entries into our meta data table, for internal parsing and
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// printing / etc in the flag parser code. We only do this for writable flags.
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#elif defined(FLAG_MODE_META)
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#define FLAG_FULL(ftype, ctype, nam, def, cmt) \
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{ Flag::TYPE_##ftype, #nam, &FLAG_##nam, &FLAGDEFAULT_##nam, cmt, false },
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#define FLAG_READONLY(ftype, ctype, nam, def, cmt)
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#define DEFINE_implication(whenflag, thenflag)
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// We produce the code to set flags when it is implied by another flag.
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#elif defined(FLAG_MODE_DEFINE_IMPLICATIONS)
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#define FLAG_FULL(ftype, ctype, nam, def, cmt)
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#define FLAG_READONLY(ftype, ctype, nam, def, cmt)
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#define DEFINE_implication(whenflag, thenflag) \
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if (FLAG_##whenflag) FLAG_##thenflag = true;
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#error No mode supplied when including flags.defs
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#ifdef FLAG_MODE_DECLARE
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// Structure used to hold a collection of arguments to the JavaScript code.
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#define JSARGUMENTS_INIT {{}}
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inline int argc() const {
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return static_cast<int>(storage_[0]);
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inline const char** argv() const {
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return reinterpret_cast<const char**>(storage_[1]);
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inline const char*& operator[] (int idx) const {
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inline JSArguments& operator=(JSArguments args) {
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set_argc(args.argc());
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set_argv(args.argv());
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static JSArguments Create(int argc, const char** argv) {
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void set_argc(int argc) {
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void set_argv(const char** argv) {
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storage_[1] = reinterpret_cast<AtomicWord>(argv);
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// Contains argc and argv. Unfortunately we have to store these two fields
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// into a single one to avoid making the initialization macro (which would be
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// "{ 0, NULL }") contain a coma.
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AtomicWord storage_[2];
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#define DEFINE_bool(nam, def, cmt) FLAG(BOOL, bool, nam, def, cmt)
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#define DEFINE_int(nam, def, cmt) FLAG(INT, int, nam, def, cmt)
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#define DEFINE_float(nam, def, cmt) FLAG(FLOAT, double, nam, def, cmt)
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#define DEFINE_string(nam, def, cmt) FLAG(STRING, const char*, nam, def, cmt)
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#define DEFINE_args(nam, def, cmt) FLAG(ARGS, JSArguments, nam, def, cmt)
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// Flags in all modes.
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#define FLAG FLAG_FULL
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// Flags for language modes and experimental language features.
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DEFINE_bool(use_strict, false, "enforce strict mode")
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DEFINE_bool(es5_readonly, false,
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"activate correct semantics for inheriting readonliness")
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DEFINE_bool(es52_globals, true,
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"activate new semantics for global var declarations")
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DEFINE_bool(harmony_typeof, false, "enable harmony semantics for typeof")
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DEFINE_bool(harmony_scoping, false, "enable harmony block scoping")
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DEFINE_bool(harmony_modules, false,
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"enable harmony modules (implies block scoping)")
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DEFINE_bool(harmony_proxies, false, "enable harmony proxies")
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DEFINE_bool(harmony_collections, false,
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"enable harmony collections (sets, maps, and weak maps)")
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DEFINE_bool(harmony, false, "enable all harmony features (except typeof)")
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DEFINE_implication(harmony, harmony_scoping)
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DEFINE_implication(harmony, harmony_modules)
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DEFINE_implication(harmony, harmony_proxies)
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DEFINE_implication(harmony, harmony_collections)
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DEFINE_implication(harmony_modules, harmony_scoping)
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// Flags for experimental implementation features.
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DEFINE_bool(packed_arrays, true, "optimizes arrays that have no holes")
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DEFINE_bool(smi_only_arrays, true, "tracks arrays with only smi values")
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DEFINE_bool(clever_optimizations,
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"Optimize object size, Array shift, DOM strings and string +")
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// Flags for data representation optimizations
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DEFINE_bool(unbox_double_arrays, true, "automatically unbox arrays of doubles")
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DEFINE_bool(string_slices, true, "use string slices")
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// Flags for Crankshaft.
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DEFINE_bool(crankshaft, true, "use crankshaft")
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DEFINE_string(hydrogen_filter, "", "optimization filter")
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DEFINE_bool(use_range, true, "use hydrogen range analysis")
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DEFINE_bool(eliminate_dead_phis, true, "eliminate dead phis")
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DEFINE_bool(use_gvn, true, "use hydrogen global value numbering")
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DEFINE_bool(use_canonicalizing, true, "use hydrogen instruction canonicalizing")
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DEFINE_bool(use_inlining, true, "use function inlining")
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DEFINE_int(max_inlined_source_size, 600,
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"maximum source size in bytes considered for a single inlining")
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DEFINE_int(max_inlined_nodes, 196,
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"maximum number of AST nodes considered for a single inlining")
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DEFINE_int(max_inlined_nodes_cumulative, 196,
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"maximum cumulative number of AST nodes considered for inlining")
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DEFINE_bool(loop_invariant_code_motion, true, "loop invariant code motion")
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DEFINE_bool(collect_megamorphic_maps_from_stub_cache,
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"crankshaft harvests type feedback from stub cache")
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DEFINE_bool(hydrogen_stats, false, "print statistics for hydrogen")
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DEFINE_bool(trace_hydrogen, false, "trace generated hydrogen to file")
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DEFINE_string(trace_phase, "Z", "trace generated IR for specified phases")
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DEFINE_bool(trace_inlining, false, "trace inlining decisions")
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DEFINE_bool(trace_alloc, false, "trace register allocator")
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DEFINE_bool(trace_all_uses, false, "trace all use positions")
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DEFINE_bool(trace_range, false, "trace range analysis")
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DEFINE_bool(trace_gvn, false, "trace global value numbering")
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DEFINE_bool(trace_representation, false, "trace representation types")
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DEFINE_bool(stress_pointer_maps, false, "pointer map for every instruction")
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DEFINE_bool(stress_environments, false, "environment for every instruction")
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DEFINE_int(deopt_every_n_times,
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"deoptimize every n times a deopt point is passed")
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DEFINE_bool(trap_on_deopt, false, "put a break point before deoptimizing")
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DEFINE_bool(deoptimize_uncommon_cases, true, "deoptimize uncommon cases")
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DEFINE_bool(polymorphic_inlining, true, "polymorphic inlining")
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DEFINE_bool(use_osr, true, "use on-stack replacement")
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DEFINE_bool(array_bounds_checks_elimination, true,
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"perform array bounds checks elimination")
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DEFINE_bool(array_index_dehoisting, false,
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"perform array index dehoisting")
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DEFINE_bool(trace_osr, false, "trace on-stack replacement")
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DEFINE_int(stress_runs, 0, "number of stress runs")
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DEFINE_bool(optimize_closures, true, "optimize closures")
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DEFINE_bool(lookup_sample_by_shared, true,
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"when picking a function to optimize, watch for shared function "
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"info, not JSFunction itself")
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DEFINE_bool(cache_optimized_code, true,
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"cache optimized code for closures")
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DEFINE_bool(inline_construct, true, "inline constructor calls")
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DEFINE_bool(inline_arguments, true, "inline functions with arguments object")
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DEFINE_bool(inline_accessors, false, "inline JavaScript accessors")
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DEFINE_int(loop_weight, 1, "loop weight for representation inference")
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DEFINE_bool(optimize_for_in, true,
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"optimize functions containing for-in loops")
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DEFINE_bool(parallel_recompilation, false,
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"optimizing hot functions asynchronously on a separate thread")
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DEFINE_bool(trace_parallel_recompilation, false, "track parallel recompilation")
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DEFINE_int(parallel_recompilation_queue_length, 2,
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"the length of the parallel compilation queue")
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// Experimental profiler changes.
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DEFINE_bool(experimental_profiler, true, "enable all profiler experiments")
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DEFINE_bool(watch_ic_patching, false, "profiler considers IC stability")
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DEFINE_int(frame_count, 1, "number of stack frames inspected by the profiler")
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DEFINE_bool(self_optimization, false,
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"primitive functions trigger their own optimization")
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DEFINE_bool(direct_self_opt, false,
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"call recompile stub directly when self-optimizing")
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DEFINE_bool(retry_self_opt, false, "re-try self-optimization if it failed")
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DEFINE_bool(count_based_interrupts, false,
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"trigger profiler ticks based on counting instead of timing")
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DEFINE_bool(interrupt_at_exit, false,
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"insert an interrupt check at function exit")
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DEFINE_bool(weighted_back_edges, false,
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"weight back edges by jump distance for interrupt triggering")
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DEFINE_int(interrupt_budget, 5900,
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"execution budget before interrupt is triggered")
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DEFINE_int(type_info_threshold, 15,
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"percentage of ICs that must have type info to allow optimization")
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DEFINE_int(self_opt_count, 130, "call count before self-optimization")
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DEFINE_implication(experimental_profiler, watch_ic_patching)
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DEFINE_implication(experimental_profiler, self_optimization)
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// Not implying direct_self_opt here because it seems to be a bad idea.
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DEFINE_implication(experimental_profiler, retry_self_opt)
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DEFINE_implication(experimental_profiler, count_based_interrupts)
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DEFINE_implication(experimental_profiler, interrupt_at_exit)
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DEFINE_implication(experimental_profiler, weighted_back_edges)
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DEFINE_bool(trace_opt_verbose, false, "extra verbose compilation tracing")
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DEFINE_implication(trace_opt_verbose, trace_opt)
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// assembler-ia32.cc / assembler-arm.cc / assembler-x64.cc
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DEFINE_bool(debug_code, false,
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"generate extra code (assertions) for debugging")
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DEFINE_bool(code_comments, false, "emit comments in code disassembly")
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DEFINE_bool(enable_sse2, true,
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"enable use of SSE2 instructions if available")
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DEFINE_bool(enable_sse3, true,
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"enable use of SSE3 instructions if available")
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DEFINE_bool(enable_sse4_1, true,
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"enable use of SSE4.1 instructions if available")
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DEFINE_bool(enable_cmov, true,
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"enable use of CMOV instruction if available")
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DEFINE_bool(enable_rdtsc, true,
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"enable use of RDTSC instruction if available")
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DEFINE_bool(enable_sahf, true,
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"enable use of SAHF instruction if available (X64 only)")
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DEFINE_bool(enable_vfp3, true,
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"enable use of VFP3 instructions if available - this implies "
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"enabling ARMv7 and VFP2 instructions (ARM only)")
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DEFINE_bool(enable_vfp2, true,
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"enable use of VFP2 instructions if available")
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DEFINE_bool(enable_armv7, true,
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"enable use of ARMv7 instructions if available (ARM only)")
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DEFINE_bool(enable_fpu, true,
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"enable use of MIPS FPU instructions if available (MIPS only)")
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DEFINE_string(expose_natives_as, NULL, "expose natives in global object")
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DEFINE_string(expose_debug_as, NULL, "expose debug in global object")
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DEFINE_bool(expose_gc, false, "expose gc extension")
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DEFINE_bool(expose_externalize_string, false,
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"expose externalize string extension")
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DEFINE_int(stack_trace_limit, 10, "number of stack frames to capture")
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DEFINE_bool(builtins_in_stack_traces, false,
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"show built-in functions in stack traces")
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DEFINE_bool(disable_native_files, false, "disable builtin natives files")
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DEFINE_bool(inline_new, true, "use fast inline allocation")
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DEFINE_bool(stack_trace_on_abort, true,
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"print a stack trace if an assertion failure occurs")
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// codegen-ia32.cc / codegen-arm.cc
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DEFINE_bool(trace, false, "trace function calls")
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DEFINE_bool(mask_constants_with_cookie,
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"use random jit cookie to mask large constants")
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DEFINE_bool(lazy, true, "use lazy compilation")
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DEFINE_bool(trace_opt, false, "trace lazy optimization")
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DEFINE_bool(trace_opt_stats, false, "trace lazy optimization statistics")
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DEFINE_bool(opt, true, "use adaptive optimizations")
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DEFINE_bool(always_opt, false, "always try to optimize functions")
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DEFINE_bool(prepare_always_opt, false, "prepare for turning on always opt")
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DEFINE_bool(trace_deopt, false, "trace deoptimization")
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DEFINE_int(min_preparse_length, 1024,
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"minimum length for automatic enable preparsing")
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DEFINE_bool(always_full_compiler, false,
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"try to use the dedicated run-once backend for all code")
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DEFINE_bool(trace_bailout, false,
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"print reasons for falling back to using the classic V8 backend")
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// compilation-cache.cc
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DEFINE_bool(compilation_cache, true, "enable compilation cache")
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DEFINE_bool(cache_prototype_transitions, true, "cache prototype transitions")
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DEFINE_bool(trace_debug_json, false, "trace debugging JSON request/response")
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DEFINE_bool(debugger_auto_break, true,
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"automatically set the debug break flag when debugger commands are "
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DEFINE_bool(enable_liveedit, true, "enable liveedit experimental feature")
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DEFINE_bool(break_on_abort, true, "always cause a debug break before aborting")
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// Slightly less than 1MB on 64-bit, since Windows' default stack size for
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// the main execution thread is 1MB for both 32 and 64-bit.
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DEFINE_int(stack_size, kPointerSize * 123,
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"default size of stack region v8 is allowed to use (in kBytes)")
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DEFINE_int(max_stack_trace_source_length, 300,
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"maximum length of function source code printed in a stack trace.")
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DEFINE_bool(always_inline_smi_code, false,
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"always inline smi code in non-opt code")
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DEFINE_int(max_new_space_size, 0, "max size of the new generation (in kBytes)")
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DEFINE_int(max_old_space_size, 0, "max size of the old generation (in Mbytes)")
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DEFINE_int(max_executable_size, 0, "max size of executable memory (in Mbytes)")
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DEFINE_bool(gc_global, false, "always perform global GCs")
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DEFINE_int(gc_interval, -1, "garbage collect after <n> allocations")
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DEFINE_bool(trace_gc, false,
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"print one trace line following each garbage collection")
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DEFINE_bool(trace_gc_nvp, false,
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"print one detailed trace line in name=value format "
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"after each garbage collection")
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DEFINE_bool(print_cumulative_gc_stat, false,
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"print cumulative GC statistics in name=value format on exit")
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DEFINE_bool(trace_gc_verbose, false,
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"print more details following each garbage collection")
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DEFINE_bool(trace_fragmentation, false,
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"report fragmentation for old pointer and data pages")
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DEFINE_bool(collect_maps, true,
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"garbage collect maps from which no objects can be reached")
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DEFINE_bool(flush_code, true,
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"flush code that we expect not to use again before full gc")
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DEFINE_bool(incremental_marking, true, "use incremental marking")
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DEFINE_bool(incremental_marking_steps, true, "do incremental marking steps")
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DEFINE_bool(trace_incremental_marking, false,
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"trace progress of the incremental marking")
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DEFINE_bool(track_gc_object_stats, false,
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"track object counts and memory usage")
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DEFINE_bool(use_idle_notification, true,
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"Use idle notification to reduce memory footprint.")
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DEFINE_bool(send_idle_notification, false,
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"Send idle notifcation between stress runs.")
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DEFINE_bool(use_ic, true, "use inline caching")
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#ifdef LIVE_OBJECT_LIST
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DEFINE_string(lol_workdir, NULL, "path for lol temp files")
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DEFINE_bool(verify_lol, false, "perform debugging verification for lol")
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// macro-assembler-ia32.cc
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DEFINE_bool(native_code_counters, false,
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"generate extra code for manipulating stats counters")
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DEFINE_bool(always_compact, false, "Perform compaction on every full GC")
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DEFINE_bool(lazy_sweeping, true,
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"Use lazy sweeping for old pointer and data spaces")
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DEFINE_bool(never_compact, false,
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"Never perform compaction on full GC - testing only")
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DEFINE_bool(compact_code_space, true,
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"Compact code space on full non-incremental collections")
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DEFINE_bool(cleanup_code_caches_at_gc, true,
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"Flush inline caches prior to mark compact collection and "
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"flush code caches in maps during mark compact cycle.")
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DEFINE_int(random_seed, 0,
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"Default seed for initializing random generator "
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"(0, the default, means to use system random).")
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DEFINE_bool(use_verbose_printer, true, "allows verbose printing")
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DEFINE_bool(allow_natives_syntax, false, "allow natives syntax")
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DEFINE_bool(trace_parse, false, "trace parsing and preparsing")
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// simulator-arm.cc and simulator-mips.cc
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DEFINE_bool(trace_sim, false, "Trace simulator execution")
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DEFINE_bool(check_icache, false,
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"Check icache flushes in ARM and MIPS simulator")
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DEFINE_int(stop_sim_at, 0, "Simulator stop after x number of instructions")
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DEFINE_int(sim_stack_alignment, 8,
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"Stack alingment in bytes in simulator (4 or 8, 8 is default)")
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DEFINE_bool(trace_exception, false,
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"print stack trace when throwing exceptions")
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DEFINE_bool(preallocate_message_memory, false,
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"preallocate some memory to build stack traces.")
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DEFINE_bool(randomize_hashes,
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"randomize hashes to avoid predictable hash collisions "
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"(with snapshots this option cannot override the baked-in seed)")
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DEFINE_int(hash_seed,
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"Fixed seed to use to hash property keys (0 means random)"
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"(with snapshots this option cannot override the baked-in seed)")
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DEFINE_bool(preemption, false,
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"activate a 100ms timer that switches between V8 threads")
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DEFINE_bool(regexp_optimization, true, "generate optimized regexp code")
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// Testing flags test/cctest/test-{flags,api,serialization}.cc
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DEFINE_bool(testing_bool_flag, true, "testing_bool_flag")
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DEFINE_int(testing_int_flag, 13, "testing_int_flag")
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DEFINE_float(testing_float_flag, 2.5, "float-flag")
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DEFINE_string(testing_string_flag, "Hello, world!", "string-flag")
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DEFINE_int(testing_prng_seed, 42, "Seed used for threading test randomness")
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DEFINE_string(testing_serialization_file, "C:\\Windows\\Temp\\serdes",
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"file in which to testing_serialize heap")
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DEFINE_string(testing_serialization_file, "/tmp/serdes",
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"file in which to serialize heap")
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DEFINE_string(extra_code, NULL, "A filename with extra code to be included in"
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" the snapshot (mksnapshot only)")
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DEFINE_bool(help, false, "Print usage message, including flags, on console")
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DEFINE_bool(dump_counters, false, "Dump counters on exit")
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#ifdef ENABLE_DEBUGGER_SUPPORT
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DEFINE_bool(debugger, false, "Enable JavaScript debugger")
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DEFINE_bool(remote_debugger, false, "Connect JavaScript debugger to the "
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"debugger agent in another process")
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DEFINE_bool(debugger_agent, false, "Enable debugger agent")
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DEFINE_int(debugger_port, 5858, "Port to use for remote debugging")
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#endif // ENABLE_DEBUGGER_SUPPORT
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DEFINE_string(map_counters, "", "Map counters to a file")
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DEFINE_args(js_arguments, JSARGUMENTS_INIT,
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"Pass all remaining arguments to the script. Alias for \"--\".")
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DEFINE_bool(debug_compile_events, false, "Enable debugger compile events")
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DEFINE_bool(debug_script_collected_events, false,
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"Enable debugger script collected events")
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DEFINE_bool(debug_compile_events, true, "Enable debugger compile events")
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DEFINE_bool(debug_script_collected_events, true,
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"Enable debugger script collected events")
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// GDB JIT integration flags.
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DEFINE_bool(gdbjit, false, "enable GDBJIT interface (disables compacting GC)")
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DEFINE_bool(gdbjit_full, false, "enable GDBJIT interface for all code objects")
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DEFINE_bool(gdbjit_dump, false, "dump elf objects with debug info to disk")
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DEFINE_string(gdbjit_dump_filter, "",
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"dump only objects containing this substring")
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DEFINE_bool(force_marking_deque_overflows, false,
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"force overflows of marking deque by reducing it's size "
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DEFINE_bool(stress_compaction, false,
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"stress the GC compactor to flush out bugs (implies "
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"--force_marking_deque_overflows)")
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#define FLAG FLAG_FULL
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#define FLAG FLAG_READONLY
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DEFINE_bool(enable_slow_asserts, false,
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"enable asserts that are slow to execute")
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// codegen-ia32.cc / codegen-arm.cc
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DEFINE_bool(trace_codegen, false,
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"print name of functions for which code is generated")
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DEFINE_bool(print_source, false, "pretty print source code")
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DEFINE_bool(print_builtin_source, false,
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"pretty print source code for builtins")
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DEFINE_bool(print_ast, false, "print source AST")
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DEFINE_bool(print_builtin_ast, false, "print source AST for builtins")
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DEFINE_string(stop_at, "", "function name where to insert a breakpoint")
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DEFINE_bool(print_builtin_scopes, false, "print scopes for builtins")
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DEFINE_bool(print_scopes, false, "print scopes")
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DEFINE_bool(trace_contexts, false, "trace contexts operations")
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DEFINE_bool(gc_greedy, false, "perform GC prior to some allocations")
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DEFINE_bool(gc_verbose, false, "print stuff during garbage collection")
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DEFINE_bool(heap_stats, false, "report heap statistics before and after GC")
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DEFINE_bool(code_stats, false, "report code statistics after GC")
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DEFINE_bool(verify_heap, false, "verify heap pointers before and after GC")
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DEFINE_bool(verify_global_context_separation, false,
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"verify that code holds on to at most one global context after GC")
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DEFINE_bool(print_handles, false, "report handles after GC")
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DEFINE_bool(print_global_handles, false, "report global handles after GC")
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DEFINE_bool(trace_ic, false, "trace inline cache state transitions")
565
DEFINE_bool(print_interfaces, false, "print interfaces")
566
DEFINE_bool(print_interface_details, false, "print interface inference details")
567
DEFINE_int(print_interface_depth, 5, "depth for printing interfaces")
570
DEFINE_bool(trace_normalization,
572
"prints when objects are turned into dictionaries.")
575
DEFINE_bool(trace_lazy, false, "trace lazy compilation")
578
DEFINE_bool(collect_heap_spill_statistics, false,
579
"report heap spill statistics along with heap_stats "
580
"(requires heap_stats)")
582
DEFINE_bool(trace_isolates, false, "trace isolate state changes")
585
DEFINE_bool(log_state_changes, false, "Log state changes.")
588
DEFINE_bool(regexp_possessive_quantifier,
590
"enable possessive quantifier syntax for testing")
591
DEFINE_bool(trace_regexp_bytecodes, false, "trace regexp bytecode execution")
592
DEFINE_bool(trace_regexp_assembler,
594
"trace regexp macro assembler calls.")
597
// Logging and profiling flags
600
#define FLAG FLAG_FULL
603
DEFINE_bool(log, false,
604
"Minimal logging (no API, code, GC, suspect, or handles samples).")
605
DEFINE_bool(log_all, false, "Log all events to the log file.")
606
DEFINE_bool(log_runtime, false, "Activate runtime system %Log call.")
607
DEFINE_bool(log_api, false, "Log API events to the log file.")
608
DEFINE_bool(log_code, false,
609
"Log code events to the log file without profiling.")
610
DEFINE_bool(log_gc, false,
611
"Log heap samples on garbage collection for the hp2ps tool.")
612
DEFINE_bool(log_handles, false, "Log global handle events.")
613
DEFINE_bool(log_snapshot_positions, false,
614
"log positions of (de)serialized objects in the snapshot.")
615
DEFINE_bool(log_suspect, false, "Log suspect operations.")
616
DEFINE_bool(prof, false,
617
"Log statistical profiling information (implies --log-code).")
618
DEFINE_bool(prof_auto, true,
619
"Used with --prof, starts profiling automatically")
620
DEFINE_bool(prof_lazy, false,
621
"Used with --prof, only does sampling and logging"
622
" when profiler is active (implies --noprof_auto).")
623
DEFINE_bool(prof_browser_mode, true,
624
"Used with --prof, turns on browser-compatible mode for profiling.")
625
DEFINE_bool(log_regexp, false, "Log regular expression execution.")
626
DEFINE_bool(sliding_state_window, false,
627
"Update sliding state window counters.")
628
DEFINE_string(logfile, "v8.log", "Specify the name of the log file.")
629
DEFINE_bool(ll_prof, false, "Enable low-level linux profiler.")
633
// Disassembler only flags
636
#ifdef ENABLE_DISASSEMBLER
637
#define FLAG FLAG_FULL
639
#define FLAG FLAG_READONLY
643
DEFINE_bool(trace_elements_transitions, false, "trace elements transitions")
646
DEFINE_bool(print_code_stubs, false, "print code stubs")
647
DEFINE_bool(test_secondary_stub_cache,
649
"test secondary stub cache by disabling the primary one")
651
DEFINE_bool(test_primary_stub_cache,
653
"test primary stub cache by disabling the secondary one")
655
// codegen-ia32.cc / codegen-arm.cc
656
DEFINE_bool(print_code, false, "print generated code")
657
DEFINE_bool(print_opt_code, false, "print optimized code")
658
DEFINE_bool(print_unopt_code, false, "print unoptimized code before "
659
"printing optimized code based on it")
660
DEFINE_bool(print_code_verbose, false, "print more information for code")
661
DEFINE_bool(print_builtin_code, false, "print generated code for builtins")
663
#ifdef ENABLE_DISASSEMBLER
664
DEFINE_bool(print_all_code, false, "enable all flags related to printing code")
665
DEFINE_implication(print_all_code, print_code)
666
DEFINE_implication(print_all_code, print_opt_code)
667
DEFINE_implication(print_all_code, print_unopt_code)
668
DEFINE_implication(print_all_code, print_code_verbose)
669
DEFINE_implication(print_all_code, print_builtin_code)
670
DEFINE_implication(print_all_code, print_code_stubs)
671
DEFINE_implication(print_all_code, code_comments)
673
DEFINE_implication(print_all_code, trace_codegen)
685
#undef DEFINE_implication
687
#undef FLAG_MODE_DECLARE
688
#undef FLAG_MODE_DEFINE
689
#undef FLAG_MODE_DEFINE_DEFAULTS
690
#undef FLAG_MODE_META
691
#undef FLAG_MODE_DEFINE_IMPLICATIONS
added
removed
src/third_party/v8/src/flag-definitions.h
