1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are
6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided
11 // with the distribution.
12 // * Neither the name of Google Inc. nor the names of its
13 // contributors may be used to endorse or promote products derived
14 // from this software without specific prior written permission.
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 // This file defines all of the flags. It is separated into different section,
29 // for Debug, Release, Logging and Profiling, etc. To add a new flag, find the
30 // correct section, and use one of the DEFINE_ macros, without a trailing ';'.
32 // This include does not have a guard, because it is a template-style include,
33 // which can be included multiple times in different modes. It expects to have
34 // a mode defined before it's included. The modes are FLAG_MODE_... below:
36 // We want to declare the names of the variables for the header file. Normally
37 // this will just be an extern declaration, but for a readonly flag we let the
38 // compiler make better optimizations by giving it the value.
39 #if defined(FLAG_MODE_DECLARE)
40 #define FLAG_FULL(ftype, ctype, nam, def, cmt) \
41 extern ctype FLAG_##nam;
42 #define FLAG_READONLY(ftype, ctype, nam, def, cmt) \
43 static ctype const FLAG_##nam = def;
44 #define DEFINE_implication(whenflag, thenflag)
46 // We want to supply the actual storage and value for the flag variable in the
47 // .cc file. We only do this for writable flags.
48 #elif defined(FLAG_MODE_DEFINE)
49 #define FLAG_FULL(ftype, ctype, nam, def, cmt) \
50 ctype FLAG_##nam = def;
51 #define FLAG_READONLY(ftype, ctype, nam, def, cmt)
52 #define DEFINE_implication(whenflag, thenflag)
54 // We need to define all of our default values so that the Flag structure can
55 // access them by pointer. These are just used internally inside of one .cc,
56 // for MODE_META, so there is no impact on the flags interface.
57 #elif defined(FLAG_MODE_DEFINE_DEFAULTS)
58 #define FLAG_FULL(ftype, ctype, nam, def, cmt) \
59 static ctype const FLAGDEFAULT_##nam = def;
60 #define FLAG_READONLY(ftype, ctype, nam, def, cmt)
61 #define DEFINE_implication(whenflag, thenflag)
63 // We want to write entries into our meta data table, for internal parsing and
64 // printing / etc in the flag parser code. We only do this for writable flags.
65 #elif defined(FLAG_MODE_META)
66 #define FLAG_FULL(ftype, ctype, nam, def, cmt) \
67 { Flag::TYPE_##ftype, #nam, &FLAG_##nam, &FLAGDEFAULT_##nam, cmt, false },
68 #define FLAG_READONLY(ftype, ctype, nam, def, cmt)
69 #define DEFINE_implication(whenflag, thenflag)
71 // We produce the code to set flags when it is implied by another flag.
72 #elif defined(FLAG_MODE_DEFINE_IMPLICATIONS)
73 #define FLAG_FULL(ftype, ctype, nam, def, cmt)
74 #define FLAG_READONLY(ftype, ctype, nam, def, cmt)
75 #define DEFINE_implication(whenflag, thenflag) \
76 if (FLAG_##whenflag) FLAG_##thenflag = true;
79 #error No mode supplied when including flags.defs
82 #ifdef FLAG_MODE_DECLARE
83 // Structure used to hold a collection of arguments to the JavaScript code.
87 JSArguments(int argc, const char** argv);
90 const char*& operator[](int idx);
91 JSArguments& operator=(JSArguments args);
98 #define DEFINE_bool(nam, def, cmt) FLAG(BOOL, bool, nam, def, cmt)
99 #define DEFINE_int(nam, def, cmt) FLAG(INT, int, nam, def, cmt)
100 #define DEFINE_float(nam, def, cmt) FLAG(FLOAT, double, nam, def, cmt)
101 #define DEFINE_string(nam, def, cmt) FLAG(STRING, const char*, nam, def, cmt)
102 #define DEFINE_args(nam, def, cmt) FLAG(ARGS, JSArguments, nam, def, cmt)
105 // Flags in all modes.
107 #define FLAG FLAG_FULL
109 // Flags for language modes and experimental language features.
110 DEFINE_bool(use_strict, false, "enforce strict mode")
112 DEFINE_bool(harmony_typeof, false, "enable harmony semantics for typeof")
113 DEFINE_bool(harmony_scoping, false, "enable harmony block scoping")
114 DEFINE_bool(harmony_modules, false,
115 "enable harmony modules (implies block scoping)")
116 DEFINE_bool(harmony_proxies, false, "enable harmony proxies")
117 DEFINE_bool(harmony_collections, false,
118 "enable harmony collections (sets, maps, and weak maps)")
119 DEFINE_bool(harmony, false, "enable all harmony features (except typeof)")
120 DEFINE_implication(harmony, harmony_scoping)
121 DEFINE_implication(harmony, harmony_modules)
122 DEFINE_implication(harmony, harmony_proxies)
123 DEFINE_implication(harmony, harmony_collections)
124 DEFINE_implication(harmony_modules, harmony_scoping)
126 // Flags for experimental implementation features.
127 DEFINE_bool(smi_only_arrays, true, "tracks arrays with only smi values")
128 DEFINE_bool(clever_optimizations,
130 "Optimize object size, Array shift, DOM strings and string +")
132 // Flags for data representation optimizations
133 DEFINE_bool(unbox_double_arrays, true, "automatically unbox arrays of doubles")
134 DEFINE_bool(string_slices, true, "use string slices")
136 // Flags for Crankshaft.
137 DEFINE_bool(crankshaft, true, "use crankshaft")
138 DEFINE_string(hydrogen_filter, "", "hydrogen use/trace filter")
139 DEFINE_bool(use_range, true, "use hydrogen range analysis")
140 DEFINE_bool(eliminate_dead_phis, true, "eliminate dead phis")
141 DEFINE_bool(use_gvn, true, "use hydrogen global value numbering")
142 DEFINE_bool(use_canonicalizing, true, "use hydrogen instruction canonicalizing")
143 DEFINE_bool(use_inlining, true, "use function inlining")
144 DEFINE_bool(limit_inlining, true, "limit code size growth from inlining")
145 DEFINE_bool(loop_invariant_code_motion, true, "loop invariant code motion")
146 DEFINE_bool(collect_megamorphic_maps_from_stub_cache,
148 "crankshaft harvests type feedback from stub cache")
149 DEFINE_bool(hydrogen_stats, false, "print statistics for hydrogen")
150 DEFINE_bool(trace_hydrogen, false, "trace generated hydrogen to file")
151 DEFINE_bool(trace_inlining, false, "trace inlining decisions")
152 DEFINE_bool(trace_alloc, false, "trace register allocator")
153 DEFINE_bool(trace_all_uses, false, "trace all use positions")
154 DEFINE_bool(trace_range, false, "trace range analysis")
155 DEFINE_bool(trace_gvn, false, "trace global value numbering")
156 DEFINE_bool(trace_representation, false, "trace representation types")
157 DEFINE_bool(stress_pointer_maps, false, "pointer map for every instruction")
158 DEFINE_bool(stress_environments, false, "environment for every instruction")
159 DEFINE_int(deopt_every_n_times,
161 "deoptimize every n times a deopt point is passed")
162 DEFINE_bool(trap_on_deopt, false, "put a break point before deoptimizing")
163 DEFINE_bool(deoptimize_uncommon_cases, true, "deoptimize uncommon cases")
164 DEFINE_bool(polymorphic_inlining, true, "polymorphic inlining")
165 DEFINE_bool(use_osr, true, "use on-stack replacement")
167 DEFINE_bool(trace_osr, false, "trace on-stack replacement")
168 DEFINE_int(stress_runs, 0, "number of stress runs")
169 DEFINE_bool(optimize_closures, true, "optimize closures")
170 DEFINE_int(loop_weight, 1, "loop weight for representation inference")
172 DEFINE_bool(optimize_for_in, false,
173 "optimize functions containing for-in loops")
175 // Experimental profiler changes.
176 DEFINE_bool(experimental_profiler, false, "enable all profiler experiments")
177 DEFINE_bool(watch_ic_patching, false, "profiler considers IC stability")
178 DEFINE_int(frame_count, 2, "number of stack frames inspected by the profiler")
179 DEFINE_bool(self_optimization, false,
180 "primitive functions trigger their own optimization")
181 DEFINE_bool(count_based_interrupts, false,
182 "trigger profiler ticks based on counting instead of timing")
183 DEFINE_bool(interrupt_at_exit, false,
184 "insert an interrupt check at function exit")
185 DEFINE_bool(weighted_back_edges, false,
186 "weight back edges by jump distance for interrupt triggering")
187 DEFINE_int(interrupt_budget, 10000,
188 "execution budget before interrupt is triggered")
189 DEFINE_int(type_info_threshold, 0,
190 "percentage of ICs that must have type info to allow optimization")
192 DEFINE_implication(experimental_profiler, watch_ic_patching)
193 DEFINE_implication(experimental_profiler, self_optimization)
194 DEFINE_implication(experimental_profiler, count_based_interrupts)
195 DEFINE_implication(experimental_profiler, interrupt_at_exit)
196 DEFINE_implication(experimental_profiler, weighted_back_edges)
198 DEFINE_bool(trace_opt_verbose, false, "extra verbose compilation tracing")
199 DEFINE_implication(trace_opt_verbose, trace_opt)
201 // assembler-ia32.cc / assembler-arm.cc / assembler-x64.cc
202 DEFINE_bool(debug_code, false,
203 "generate extra code (assertions) for debugging")
204 DEFINE_bool(code_comments, false, "emit comments in code disassembly")
205 DEFINE_bool(enable_sse2, true,
206 "enable use of SSE2 instructions if available")
207 DEFINE_bool(enable_sse3, true,
208 "enable use of SSE3 instructions if available")
209 DEFINE_bool(enable_sse4_1, true,
210 "enable use of SSE4.1 instructions if available")
211 DEFINE_bool(enable_cmov, true,
212 "enable use of CMOV instruction if available")
213 DEFINE_bool(enable_rdtsc, true,
214 "enable use of RDTSC instruction if available")
215 DEFINE_bool(enable_sahf, true,
216 "enable use of SAHF instruction if available (X64 only)")
217 DEFINE_bool(enable_vfp3, true,
218 "enable use of VFP3 instructions if available - this implies "
219 "enabling ARMv7 instructions (ARM only)")
220 DEFINE_bool(enable_armv7, true,
221 "enable use of ARMv7 instructions if available (ARM only)")
222 DEFINE_bool(enable_fpu, true,
223 "enable use of MIPS FPU instructions if available (MIPS only)")
226 DEFINE_string(expose_natives_as, NULL, "expose natives in global object")
227 DEFINE_string(expose_debug_as, NULL, "expose debug in global object")
228 DEFINE_bool(expose_gc, false, "expose gc extension")
229 DEFINE_bool(expose_externalize_string, false,
230 "expose externalize string extension")
231 DEFINE_int(stack_trace_limit, 10, "number of stack frames to capture")
232 DEFINE_bool(builtins_in_stack_traces, false,
233 "show built-in functions in stack traces")
234 DEFINE_bool(disable_native_files, false, "disable builtin natives files")
237 DEFINE_bool(inline_new, true, "use fast inline allocation")
240 DEFINE_bool(stack_trace_on_abort, true,
241 "print a stack trace if an assertion failure occurs")
243 // codegen-ia32.cc / codegen-arm.cc
244 DEFINE_bool(trace, false, "trace function calls")
245 DEFINE_bool(mask_constants_with_cookie,
247 "use random jit cookie to mask large constants")
250 DEFINE_bool(lazy, true, "use lazy compilation")
251 DEFINE_bool(trace_opt, false, "trace lazy optimization")
252 DEFINE_bool(trace_opt_stats, false, "trace lazy optimization statistics")
253 DEFINE_bool(opt, true, "use adaptive optimizations")
254 DEFINE_bool(always_opt, false, "always try to optimize functions")
255 DEFINE_bool(prepare_always_opt, false, "prepare for turning on always opt")
256 DEFINE_bool(trace_deopt, false, "trace deoptimization")
259 DEFINE_int(min_preparse_length, 1024,
260 "minimum length for automatic enable preparsing")
261 DEFINE_bool(always_full_compiler, false,
262 "try to use the dedicated run-once backend for all code")
263 DEFINE_bool(trace_bailout, false,
264 "print reasons for falling back to using the classic V8 backend")
266 // compilation-cache.cc
267 DEFINE_bool(compilation_cache, true, "enable compilation cache")
269 DEFINE_bool(cache_prototype_transitions, true, "cache prototype transitions")
272 DEFINE_bool(trace_debug_json, false, "trace debugging JSON request/response")
273 DEFINE_bool(debugger_auto_break, true,
274 "automatically set the debug break flag when debugger commands are "
276 DEFINE_bool(enable_liveedit, true, "enable liveedit experimental feature")
279 DEFINE_int(stack_size, kPointerSize * 128,
280 "default size of stack region v8 is allowed to use (in kBytes)")
283 DEFINE_int(max_stack_trace_source_length, 300,
284 "maximum length of function source code printed in a stack trace.")
287 DEFINE_bool(always_inline_smi_code, false,
288 "always inline smi code in non-opt code")
291 DEFINE_int(max_new_space_size, 0, "max size of the new generation (in kBytes)")
292 DEFINE_int(max_old_space_size, 0, "max size of the old generation (in Mbytes)")
293 DEFINE_int(max_executable_size, 0, "max size of executable memory (in Mbytes)")
294 DEFINE_bool(gc_global, false, "always perform global GCs")
295 DEFINE_int(gc_interval, -1, "garbage collect after <n> allocations")
296 DEFINE_bool(trace_gc, false,
297 "print one trace line following each garbage collection")
298 DEFINE_bool(trace_gc_nvp, false,
299 "print one detailed trace line in name=value format "
300 "after each garbage collection")
301 DEFINE_bool(print_cumulative_gc_stat, false,
302 "print cumulative GC statistics in name=value format on exit")
303 DEFINE_bool(trace_gc_verbose, false,
304 "print more details following each garbage collection")
305 DEFINE_bool(trace_fragmentation, false,
306 "report fragmentation for old pointer and data pages")
307 DEFINE_bool(collect_maps, true,
308 "garbage collect maps from which no objects can be reached")
309 DEFINE_bool(flush_code, true,
310 "flush code that we expect not to use again before full gc")
311 DEFINE_bool(incremental_marking, true, "use incremental marking")
312 DEFINE_bool(incremental_marking_steps, true, "do incremental marking steps")
313 DEFINE_bool(trace_incremental_marking, false,
314 "trace progress of the incremental marking")
317 DEFINE_bool(use_idle_notification, true,
318 "Use idle notification to reduce memory footprint.")
320 DEFINE_bool(use_ic, true, "use inline caching")
322 #ifdef LIVE_OBJECT_LIST
324 DEFINE_string(lol_workdir, NULL, "path for lol temp files")
325 DEFINE_bool(verify_lol, false, "perform debugging verification for lol")
328 // macro-assembler-ia32.cc
329 DEFINE_bool(native_code_counters, false,
330 "generate extra code for manipulating stats counters")
333 DEFINE_bool(always_compact, false, "Perform compaction on every full GC")
334 DEFINE_bool(lazy_sweeping, true,
335 "Use lazy sweeping for old pointer and data spaces")
336 DEFINE_bool(never_compact, false,
337 "Never perform compaction on full GC - testing only")
338 DEFINE_bool(compact_code_space, true,
339 "Compact code space on full non-incremental collections")
340 DEFINE_bool(cleanup_code_caches_at_gc, true,
341 "Flush inline caches prior to mark compact collection and "
342 "flush code caches in maps during mark compact cycle.")
343 DEFINE_int(random_seed, 0,
344 "Default seed for initializing random generator "
345 "(0, the default, means to use system random).")
348 DEFINE_bool(use_verbose_printer, true, "allows verbose printing")
351 DEFINE_bool(allow_natives_syntax, false, "allow natives syntax")
353 // simulator-arm.cc and simulator-mips.cc
354 DEFINE_bool(trace_sim, false, "Trace simulator execution")
355 DEFINE_bool(check_icache, false,
356 "Check icache flushes in ARM and MIPS simulator")
357 DEFINE_int(stop_sim_at, 0, "Simulator stop after x number of instructions")
358 DEFINE_int(sim_stack_alignment, 8,
359 "Stack alingment in bytes in simulator (4 or 8, 8 is default)")
362 DEFINE_bool(trace_exception, false,
363 "print stack trace when throwing exceptions")
364 DEFINE_bool(preallocate_message_memory, false,
365 "preallocate some memory to build stack traces.")
366 DEFINE_bool(randomize_hashes,
368 "randomize hashes to avoid predictable hash collisions "
369 "(with snapshots this option cannot override the baked-in seed)")
370 DEFINE_int(hash_seed,
372 "Fixed seed to use to hash property keys (0 means random)"
373 "(with snapshots this option cannot override the baked-in seed)")
376 DEFINE_bool(preemption, false,
377 "activate a 100ms timer that switches between V8 threads")
380 DEFINE_bool(regexp_optimization, true, "generate optimized regexp code")
382 // Testing flags test/cctest/test-{flags,api,serialization}.cc
383 DEFINE_bool(testing_bool_flag, true, "testing_bool_flag")
384 DEFINE_int(testing_int_flag, 13, "testing_int_flag")
385 DEFINE_float(testing_float_flag, 2.5, "float-flag")
386 DEFINE_string(testing_string_flag, "Hello, world!", "string-flag")
387 DEFINE_int(testing_prng_seed, 42, "Seed used for threading test randomness")
389 DEFINE_string(testing_serialization_file, "C:\\Windows\\Temp\\serdes",
390 "file in which to testing_serialize heap")
392 DEFINE_string(testing_serialization_file, "/tmp/serdes",
393 "file in which to serialize heap")
400 DEFINE_bool(help, false, "Print usage message, including flags, on console")
401 DEFINE_bool(dump_counters, false, "Dump counters on exit")
403 #ifdef ENABLE_DEBUGGER_SUPPORT
404 DEFINE_bool(debugger, false, "Enable JavaScript debugger")
405 DEFINE_bool(remote_debugger, false, "Connect JavaScript debugger to the "
406 "debugger agent in another process")
407 DEFINE_bool(debugger_agent, false, "Enable debugger agent")
408 DEFINE_int(debugger_port, 5858, "Port to use for remote debugging")
409 #endif // ENABLE_DEBUGGER_SUPPORT
411 DEFINE_string(map_counters, "", "Map counters to a file")
412 DEFINE_args(js_arguments, JSArguments(),
413 "Pass all remaining arguments to the script. Alias for \"--\".")
416 DEFINE_bool(debug_compile_events, false, "Enable debugger compile events")
417 DEFINE_bool(debug_script_collected_events, false,
418 "Enable debugger script collected events")
420 DEFINE_bool(debug_compile_events, true, "Enable debugger compile events")
421 DEFINE_bool(debug_script_collected_events, true,
422 "Enable debugger script collected events")
427 // GDB JIT integration flags.
430 DEFINE_bool(gdbjit, false, "enable GDBJIT interface (disables compacting GC)")
431 DEFINE_bool(gdbjit_full, false, "enable GDBJIT interface for all code objects")
432 DEFINE_bool(gdbjit_dump, false, "dump elf objects with debug info to disk")
433 DEFINE_string(gdbjit_dump_filter, "",
434 "dump only objects containing this substring")
437 DEFINE_bool(force_marking_deque_overflows, false,
438 "force overflows of marking deque by reducing it's size "
441 DEFINE_bool(stress_compaction, false,
442 "stress the GC compactor to flush out bugs (implies "
443 "--force_marking_deque_overflows)")
450 #define FLAG FLAG_FULL
452 #define FLAG FLAG_READONLY
456 DEFINE_bool(enable_slow_asserts, false,
457 "enable asserts that are slow to execute")
459 // codegen-ia32.cc / codegen-arm.cc
460 DEFINE_bool(trace_codegen, false,
461 "print name of functions for which code is generated")
462 DEFINE_bool(print_source, false, "pretty print source code")
463 DEFINE_bool(print_builtin_source, false,
464 "pretty print source code for builtins")
465 DEFINE_bool(print_ast, false, "print source AST")
466 DEFINE_bool(print_builtin_ast, false, "print source AST for builtins")
467 DEFINE_string(stop_at, "", "function name where to insert a breakpoint")
470 DEFINE_bool(print_builtin_scopes, false, "print scopes for builtins")
471 DEFINE_bool(print_scopes, false, "print scopes")
474 DEFINE_bool(trace_contexts, false, "trace contexts operations")
477 DEFINE_bool(gc_greedy, false, "perform GC prior to some allocations")
478 DEFINE_bool(gc_verbose, false, "print stuff during garbage collection")
479 DEFINE_bool(heap_stats, false, "report heap statistics before and after GC")
480 DEFINE_bool(code_stats, false, "report code statistics after GC")
481 DEFINE_bool(verify_heap, false, "verify heap pointers before and after GC")
482 DEFINE_bool(print_handles, false, "report handles after GC")
483 DEFINE_bool(print_global_handles, false, "report global handles after GC")
486 DEFINE_bool(trace_ic, false, "trace inline cache state transitions")
489 DEFINE_bool(trace_normalization,
491 "prints when objects are turned into dictionaries.")
494 DEFINE_bool(trace_lazy, false, "trace lazy compilation")
497 DEFINE_bool(collect_heap_spill_statistics, false,
498 "report heap spill statistics along with heap_stats "
499 "(requires heap_stats)")
501 DEFINE_bool(trace_isolates, false, "trace isolate state changes")
504 DEFINE_bool(log_state_changes, false, "Log state changes.")
507 DEFINE_bool(regexp_possessive_quantifier,
509 "enable possessive quantifier syntax for testing")
510 DEFINE_bool(trace_regexp_bytecodes, false, "trace regexp bytecode execution")
511 DEFINE_bool(trace_regexp_assembler,
513 "trace regexp macro assembler calls.")
516 // Logging and profiling flags
519 #define FLAG FLAG_FULL
522 DEFINE_bool(log, false,
523 "Minimal logging (no API, code, GC, suspect, or handles samples).")
524 DEFINE_bool(log_all, false, "Log all events to the log file.")
525 DEFINE_bool(log_runtime, false, "Activate runtime system %Log call.")
526 DEFINE_bool(log_api, false, "Log API events to the log file.")
527 DEFINE_bool(log_code, false,
528 "Log code events to the log file without profiling.")
529 DEFINE_bool(log_gc, false,
530 "Log heap samples on garbage collection for the hp2ps tool.")
531 DEFINE_bool(log_handles, false, "Log global handle events.")
532 DEFINE_bool(log_snapshot_positions, false,
533 "log positions of (de)serialized objects in the snapshot.")
534 DEFINE_bool(log_suspect, false, "Log suspect operations.")
535 DEFINE_bool(prof, false,
536 "Log statistical profiling information (implies --log-code).")
537 DEFINE_bool(prof_auto, true,
538 "Used with --prof, starts profiling automatically")
539 DEFINE_bool(prof_lazy, false,
540 "Used with --prof, only does sampling and logging"
541 " when profiler is active (implies --noprof_auto).")
542 DEFINE_bool(prof_browser_mode, true,
543 "Used with --prof, turns on browser-compatible mode for profiling.")
544 DEFINE_bool(log_regexp, false, "Log regular expression execution.")
545 DEFINE_bool(sliding_state_window, false,
546 "Update sliding state window counters.")
547 DEFINE_string(logfile, "v8.log", "Specify the name of the log file.")
548 DEFINE_bool(ll_prof, false, "Enable low-level linux profiler.")
551 // Disassembler only flags
554 #ifdef ENABLE_DISASSEMBLER
555 #define FLAG FLAG_FULL
557 #define FLAG FLAG_READONLY
561 DEFINE_bool(trace_elements_transitions, false, "trace elements transitions")
564 DEFINE_bool(print_code_stubs, false, "print code stubs")
566 // codegen-ia32.cc / codegen-arm.cc
567 DEFINE_bool(print_code, false, "print generated code")
568 DEFINE_bool(print_opt_code, false, "print optimized code")
569 DEFINE_bool(print_unopt_code, false, "print unoptimized code before "
570 "printing optimized code based on it")
571 DEFINE_bool(print_code_verbose, false, "print more information for code")
572 DEFINE_bool(print_builtin_code, false, "print generated code for builtins")
574 #ifdef ENABLE_DISASSEMBLER
575 DEFINE_bool(print_all_code, false, "enable all flags related to printing code")
576 DEFINE_implication(print_all_code, print_code)
577 DEFINE_implication(print_all_code, print_opt_code)
578 DEFINE_implication(print_all_code, print_unopt_code)
579 DEFINE_implication(print_all_code, print_code_verbose)
580 DEFINE_implication(print_all_code, print_builtin_code)
581 DEFINE_implication(print_all_code, print_code_stubs)
582 DEFINE_implication(print_all_code, code_comments)
584 DEFINE_implication(print_all_code, trace_codegen)
596 #undef DEFINE_implication
598 #undef FLAG_MODE_DECLARE
599 #undef FLAG_MODE_DEFINE
600 #undef FLAG_MODE_DEFINE_DEFAULTS
601 #undef FLAG_MODE_META
602 #undef FLAG_MODE_DEFINE_IMPLICATIONS