flag-definitions.h revision c7cc028aaeedbbfa11c11d0b7b243b3d9e837ed9
1// Copyright 2011 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 4// met: 5// 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. 15// 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. 27 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 ';'. 31// 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: 35 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) 45 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) 53 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) 62 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) 70 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; 77 78#else 79#error No mode supplied when including flags.defs 80#endif 81 82#ifdef FLAG_MODE_DECLARE 83// Structure used to hold a collection of arguments to the JavaScript code. 84struct JSArguments { 85public: 86 JSArguments(); 87 JSArguments(int argc, const char** argv); 88 int argc() const; 89 const char** argv(); 90 const char*& operator[](int idx); 91 JSArguments& operator=(JSArguments args); 92private: 93 int argc_; 94 const char** argv_; 95}; 96#endif 97 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) 103 104// 105// Flags in all modes. 106// 107#define FLAG FLAG_FULL 108 109// Flags for experimental language features. 110DEFINE_bool(harmony_typeof, false, "enable harmony semantics for typeof") 111DEFINE_bool(harmony_scoping, false, "enable harmony block scoping") 112DEFINE_bool(harmony_proxies, false, "enable harmony proxies") 113DEFINE_bool(harmony_collections, false, 114 "enable harmony collections (sets, maps, and weak maps)") 115DEFINE_bool(harmony, false, "enable all harmony features") 116DEFINE_implication(harmony, harmony_typeof) 117DEFINE_implication(harmony, harmony_scoping) 118DEFINE_implication(harmony, harmony_proxies) 119DEFINE_implication(harmony, harmony_collections) 120 121// Flags for experimental implementation features. 122DEFINE_bool(unbox_double_arrays, true, "automatically unbox arrays of doubles") 123DEFINE_bool(smi_only_arrays, false, "tracks arrays with only smi values") 124DEFINE_bool(string_slices, true, "use string slices") 125 126DEFINE_bool(clever_optimizations, 127 true, 128 "Optimize object size, Array shift, DOM strings and string +") 129 130// Flags for Crankshaft. 131DEFINE_bool(crankshaft, true, "use crankshaft") 132DEFINE_string(hydrogen_filter, "", "hydrogen use/trace filter") 133DEFINE_bool(use_hydrogen, true, "use generated hydrogen for compilation") 134DEFINE_bool(build_lithium, true, "use lithium chunk builder") 135DEFINE_bool(alloc_lithium, true, "use lithium register allocator") 136DEFINE_bool(use_lithium, true, "use lithium code generator") 137DEFINE_bool(use_range, true, "use hydrogen range analysis") 138DEFINE_bool(eliminate_dead_phis, true, "eliminate dead phis") 139DEFINE_bool(use_gvn, true, "use hydrogen global value numbering") 140DEFINE_bool(use_canonicalizing, true, "use hydrogen instruction canonicalizing") 141DEFINE_bool(use_inlining, true, "use function inlining") 142DEFINE_bool(limit_inlining, true, "limit code size growth from inlining") 143DEFINE_bool(eliminate_empty_blocks, true, "eliminate empty blocks") 144DEFINE_bool(loop_invariant_code_motion, true, "loop invariant code motion") 145DEFINE_bool(collect_megamorphic_maps_from_stub_cache, 146 true, 147 "crankshaft harvests type feedback from stub cache") 148DEFINE_bool(hydrogen_stats, false, "print statistics for hydrogen") 149DEFINE_bool(trace_hydrogen, false, "trace generated hydrogen to file") 150DEFINE_bool(trace_inlining, false, "trace inlining decisions") 151DEFINE_bool(trace_alloc, false, "trace register allocator") 152DEFINE_bool(trace_all_uses, false, "trace all use positions") 153DEFINE_bool(trace_range, false, "trace range analysis") 154DEFINE_bool(trace_gvn, false, "trace global value numbering") 155DEFINE_bool(trace_representation, false, "trace representation types") 156DEFINE_bool(stress_pointer_maps, false, "pointer map for every instruction") 157DEFINE_bool(stress_environments, false, "environment for every instruction") 158DEFINE_int(deopt_every_n_times, 159 0, 160 "deoptimize every n times a deopt point is passed") 161DEFINE_bool(trap_on_deopt, false, "put a break point before deoptimizing") 162DEFINE_bool(deoptimize_uncommon_cases, true, "deoptimize uncommon cases") 163DEFINE_bool(polymorphic_inlining, true, "polymorphic inlining") 164DEFINE_bool(use_osr, true, "use on-stack replacement") 165 166DEFINE_bool(trace_osr, false, "trace on-stack replacement") 167DEFINE_int(stress_runs, 0, "number of stress runs") 168DEFINE_bool(optimize_closures, true, "optimize closures") 169 170// assembler-ia32.cc / assembler-arm.cc / assembler-x64.cc 171DEFINE_bool(debug_code, false, 172 "generate extra code (assertions) for debugging") 173DEFINE_bool(code_comments, false, "emit comments in code disassembly") 174DEFINE_bool(peephole_optimization, true, 175 "perform peephole optimizations in assembly code") 176DEFINE_bool(enable_sse2, true, 177 "enable use of SSE2 instructions if available") 178DEFINE_bool(enable_sse3, true, 179 "enable use of SSE3 instructions if available") 180DEFINE_bool(enable_sse4_1, true, 181 "enable use of SSE4.1 instructions if available") 182DEFINE_bool(enable_cmov, true, 183 "enable use of CMOV instruction if available") 184DEFINE_bool(enable_rdtsc, true, 185 "enable use of RDTSC instruction if available") 186DEFINE_bool(enable_sahf, true, 187 "enable use of SAHF instruction if available (X64 only)") 188DEFINE_bool(enable_vfp3, true, 189 "enable use of VFP3 instructions if available - this implies " 190 "enabling ARMv7 instructions (ARM only)") 191DEFINE_bool(enable_armv7, true, 192 "enable use of ARMv7 instructions if available (ARM only)") 193DEFINE_bool(enable_fpu, true, 194 "enable use of MIPS FPU instructions if available (MIPS only)") 195 196// bootstrapper.cc 197DEFINE_string(expose_natives_as, NULL, "expose natives in global object") 198DEFINE_string(expose_debug_as, NULL, "expose debug in global object") 199DEFINE_bool(expose_gc, false, "expose gc extension") 200DEFINE_bool(expose_externalize_string, false, 201 "expose externalize string extension") 202DEFINE_int(stack_trace_limit, 10, "number of stack frames to capture") 203DEFINE_bool(builtins_in_stack_traces, false, 204 "show built-in functions in stack traces") 205DEFINE_bool(disable_native_files, false, "disable builtin natives files") 206 207// builtins-ia32.cc 208DEFINE_bool(inline_new, true, "use fast inline allocation") 209 210// checks.cc 211DEFINE_bool(stack_trace_on_abort, true, 212 "print a stack trace if an assertion failure occurs") 213 214// codegen-ia32.cc / codegen-arm.cc 215DEFINE_bool(trace, false, "trace function calls") 216DEFINE_bool(mask_constants_with_cookie, 217 true, 218 "use random jit cookie to mask large constants") 219 220// codegen.cc 221DEFINE_bool(lazy, true, "use lazy compilation") 222DEFINE_bool(trace_opt, false, "trace lazy optimization") 223DEFINE_bool(trace_opt_stats, false, "trace lazy optimization statistics") 224DEFINE_bool(opt, true, "use adaptive optimizations") 225DEFINE_bool(opt_eagerly, false, "be more eager when adaptively optimizing") 226DEFINE_bool(always_opt, false, "always try to optimize functions") 227DEFINE_bool(prepare_always_opt, false, "prepare for turning on always opt") 228DEFINE_bool(deopt, true, "support deoptimization") 229DEFINE_bool(trace_deopt, false, "trace deoptimization") 230 231// compiler.cc 232DEFINE_int(min_preparse_length, 1024, 233 "minimum length for automatic enable preparsing") 234DEFINE_bool(always_full_compiler, false, 235 "try to use the dedicated run-once backend for all code") 236DEFINE_bool(trace_bailout, false, 237 "print reasons for falling back to using the classic V8 backend") 238 239// compilation-cache.cc 240DEFINE_bool(compilation_cache, true, "enable compilation cache") 241 242DEFINE_bool(cache_prototype_transitions, true, "cache prototype transitions") 243 244// debug.cc 245DEFINE_bool(trace_debug_json, false, "trace debugging JSON request/response") 246DEFINE_bool(debugger_auto_break, true, 247 "automatically set the debug break flag when debugger commands are " 248 "in the queue") 249DEFINE_bool(enable_liveedit, true, "enable liveedit experimental feature") 250 251// execution.cc 252DEFINE_int(stack_size, kPointerSize * 128, 253 "default size of stack region v8 is allowed to use (in KkBytes)") 254 255// frames.cc 256DEFINE_int(max_stack_trace_source_length, 300, 257 "maximum length of function source code printed in a stack trace.") 258 259// full-codegen.cc 260DEFINE_bool(always_inline_smi_code, false, 261 "always inline smi code in non-opt code") 262 263// heap.cc 264DEFINE_int(max_new_space_size, 0, "max size of the new generation (in kBytes)") 265DEFINE_int(max_old_space_size, 0, "max size of the old generation (in Mbytes)") 266DEFINE_int(max_executable_size, 0, "max size of executable memory (in Mbytes)") 267DEFINE_bool(gc_global, false, "always perform global GCs") 268DEFINE_int(gc_interval, -1, "garbage collect after <n> allocations") 269DEFINE_bool(trace_gc, false, 270 "print one trace line following each garbage collection") 271DEFINE_bool(trace_gc_nvp, false, 272 "print one detailed trace line in name=value format " 273 "after each garbage collection") 274DEFINE_bool(print_cumulative_gc_stat, false, 275 "print cumulative GC statistics in name=value format on exit") 276DEFINE_bool(trace_gc_verbose, false, 277 "print more details following each garbage collection") 278DEFINE_bool(trace_fragmentation, false, 279 "report fragmentation for old pointer and data pages") 280DEFINE_bool(collect_maps, true, 281 "garbage collect maps from which no objects can be reached") 282DEFINE_bool(flush_code, true, 283 "flush code that we expect not to use again before full gc") 284DEFINE_bool(incremental_marking, true, "use incremental marking") 285DEFINE_bool(incremental_marking_steps, true, "do incremental marking steps") 286DEFINE_bool(trace_incremental_marking, false, 287 "trace progress of the incremental marking") 288 289// v8.cc 290DEFINE_bool(use_idle_notification, true, 291 "Use idle notification to reduce memory footprint.") 292// ic.cc 293DEFINE_bool(use_ic, true, "use inline caching") 294 295#ifdef LIVE_OBJECT_LIST 296// liveobjectlist.cc 297DEFINE_string(lol_workdir, NULL, "path for lol temp files") 298DEFINE_bool(verify_lol, false, "perform debugging verification for lol") 299#endif 300 301// macro-assembler-ia32.cc 302DEFINE_bool(native_code_counters, false, 303 "generate extra code for manipulating stats counters") 304 305// mark-compact.cc 306DEFINE_bool(always_compact, false, "Perform compaction on every full GC") 307DEFINE_bool(lazy_sweeping, true, 308 "Use lazy sweeping for old pointer and data spaces") 309DEFINE_bool(cleanup_caches_in_maps_at_gc, true, 310 "Flush code caches in maps during mark compact cycle.") 311DEFINE_bool(never_compact, false, 312 "Never perform compaction on full GC - testing only") 313DEFINE_bool(compact_code_space, false, "Compact code space") 314DEFINE_bool(cleanup_code_caches_at_gc, true, 315 "Flush inline caches prior to mark compact collection and " 316 "flush code caches in maps during mark compact cycle.") 317DEFINE_int(random_seed, 0, 318 "Default seed for initializing random generator " 319 "(0, the default, means to use system random).") 320 321DEFINE_bool(canonicalize_object_literal_maps, true, 322 "Canonicalize maps for object literals.") 323 324DEFINE_int(max_map_space_pages, MapSpace::kMaxMapPageIndex - 1, 325 "Maximum number of pages in map space which still allows to encode " 326 "forwarding pointers. That's actually a constant, but it's useful " 327 "to control it with a flag for better testing.") 328 329// mksnapshot.cc 330DEFINE_bool(h, false, "print this message") 331DEFINE_bool(new_snapshot, true, "use new snapshot implementation") 332 333// objects.cc 334DEFINE_bool(use_verbose_printer, true, "allows verbose printing") 335 336// parser.cc 337DEFINE_bool(allow_natives_syntax, false, "allow natives syntax") 338 339// simulator-arm.cc and simulator-mips.cc 340DEFINE_bool(trace_sim, false, "Trace simulator execution") 341DEFINE_bool(check_icache, false, 342 "Check icache flushes in ARM and MIPS simulator") 343DEFINE_int(stop_sim_at, 0, "Simulator stop after x number of instructions") 344DEFINE_int(sim_stack_alignment, 8, 345 "Stack alingment in bytes in simulator (4 or 8, 8 is default)") 346 347// isolate.cc 348DEFINE_bool(trace_exception, false, 349 "print stack trace when throwing exceptions") 350DEFINE_bool(preallocate_message_memory, false, 351 "preallocate some memory to build stack traces.") 352DEFINE_bool(randomize_hashes, 353 true, 354 "randomize hashes to avoid predictable hash collisions " 355 "(with snapshots this option cannot override the baked-in seed)") 356DEFINE_int(hash_seed, 357 0, 358 "Fixed seed to use to hash property keys (0 means random)" 359 "(with snapshots this option cannot override the baked-in seed)") 360 361// v8.cc 362DEFINE_bool(preemption, false, 363 "activate a 100ms timer that switches between V8 threads") 364 365// Regexp 366DEFINE_bool(regexp_optimization, true, "generate optimized regexp code") 367 368// Testing flags test/cctest/test-{flags,api,serialization}.cc 369DEFINE_bool(testing_bool_flag, true, "testing_bool_flag") 370DEFINE_int(testing_int_flag, 13, "testing_int_flag") 371DEFINE_float(testing_float_flag, 2.5, "float-flag") 372DEFINE_string(testing_string_flag, "Hello, world!", "string-flag") 373DEFINE_int(testing_prng_seed, 42, "Seed used for threading test randomness") 374#ifdef WIN32 375DEFINE_string(testing_serialization_file, "C:\\Windows\\Temp\\serdes", 376 "file in which to testing_serialize heap") 377#else 378DEFINE_string(testing_serialization_file, "/tmp/serdes", 379 "file in which to serialize heap") 380#endif 381 382// 383// Dev shell flags 384// 385 386DEFINE_bool(help, false, "Print usage message, including flags, on console") 387DEFINE_bool(dump_counters, false, "Dump counters on exit") 388 389#ifdef ENABLE_DEBUGGER_SUPPORT 390DEFINE_bool(debugger, false, "Enable JavaScript debugger") 391DEFINE_bool(remote_debugger, false, "Connect JavaScript debugger to the " 392 "debugger agent in another process") 393DEFINE_bool(debugger_agent, false, "Enable debugger agent") 394DEFINE_int(debugger_port, 5858, "Port to use for remote debugging") 395#endif // ENABLE_DEBUGGER_SUPPORT 396 397DEFINE_string(map_counters, "", "Map counters to a file") 398DEFINE_args(js_arguments, JSArguments(), 399 "Pass all remaining arguments to the script. Alias for \"--\".") 400 401#if defined(WEBOS__) 402DEFINE_bool(debug_compile_events, false, "Enable debugger compile events") 403DEFINE_bool(debug_script_collected_events, false, 404 "Enable debugger script collected events") 405#else 406DEFINE_bool(debug_compile_events, true, "Enable debugger compile events") 407DEFINE_bool(debug_script_collected_events, true, 408 "Enable debugger script collected events") 409#endif 410 411 412// 413// GDB JIT integration flags. 414// 415 416DEFINE_bool(gdbjit, false, "enable GDBJIT interface (disables compacting GC)") 417DEFINE_bool(gdbjit_full, false, "enable GDBJIT interface for all code objects") 418DEFINE_bool(gdbjit_dump, false, "dump elf objects with debug info to disk") 419DEFINE_string(gdbjit_dump_filter, "", 420 "dump only objects containing this substring") 421 422// mark-compact.cc 423DEFINE_bool(force_marking_deque_overflows, false, 424 "force overflows of marking deque by reducing it's size " 425 "to 64 words") 426 427DEFINE_bool(stress_compaction, false, 428 "stress the GC compactor to flush out bugs (implies " 429 "--force_marking_deque_overflows)") 430 431// 432// Debug only flags 433// 434#undef FLAG 435#ifdef DEBUG 436#define FLAG FLAG_FULL 437#else 438#define FLAG FLAG_READONLY 439#endif 440 441// checks.cc 442DEFINE_bool(enable_slow_asserts, false, 443 "enable asserts that are slow to execute") 444 445// codegen-ia32.cc / codegen-arm.cc 446DEFINE_bool(trace_codegen, false, 447 "print name of functions for which code is generated") 448DEFINE_bool(print_source, false, "pretty print source code") 449DEFINE_bool(print_builtin_source, false, 450 "pretty print source code for builtins") 451DEFINE_bool(print_ast, false, "print source AST") 452DEFINE_bool(print_builtin_ast, false, "print source AST for builtins") 453DEFINE_bool(print_json_ast, false, "print source AST as JSON") 454DEFINE_bool(print_builtin_json_ast, false, 455 "print source AST for builtins as JSON") 456DEFINE_string(stop_at, "", "function name where to insert a breakpoint") 457 458// compiler.cc 459DEFINE_bool(print_builtin_scopes, false, "print scopes for builtins") 460DEFINE_bool(print_scopes, false, "print scopes") 461 462// contexts.cc 463DEFINE_bool(trace_contexts, false, "trace contexts operations") 464 465// heap.cc 466DEFINE_bool(gc_greedy, false, "perform GC prior to some allocations") 467DEFINE_bool(gc_verbose, false, "print stuff during garbage collection") 468DEFINE_bool(heap_stats, false, "report heap statistics before and after GC") 469DEFINE_bool(code_stats, false, "report code statistics after GC") 470DEFINE_bool(verify_heap, false, "verify heap pointers before and after GC") 471DEFINE_bool(print_handles, false, "report handles after GC") 472DEFINE_bool(print_global_handles, false, "report global handles after GC") 473 474// ic.cc 475DEFINE_bool(trace_ic, false, "trace inline cache state transitions") 476 477// objects.cc 478DEFINE_bool(trace_normalization, 479 false, 480 "prints when objects are turned into dictionaries.") 481 482// runtime.cc 483DEFINE_bool(trace_lazy, false, "trace lazy compilation") 484 485// serialize.cc 486DEFINE_bool(debug_serialization, false, 487 "write debug information into the snapshot.") 488 489// spaces.cc 490DEFINE_bool(collect_heap_spill_statistics, false, 491 "report heap spill statistics along with heap_stats " 492 "(requires heap_stats)") 493 494DEFINE_bool(trace_isolates, false, "trace isolate state changes") 495 496// VM state 497DEFINE_bool(log_state_changes, false, "Log state changes.") 498 499// Regexp 500DEFINE_bool(regexp_possessive_quantifier, 501 false, 502 "enable possessive quantifier syntax for testing") 503DEFINE_bool(trace_regexp_bytecodes, false, "trace regexp bytecode execution") 504DEFINE_bool(trace_regexp_assembler, 505 false, 506 "trace regexp macro assembler calls.") 507 508// 509// Logging and profiling flags 510// 511#undef FLAG 512#define FLAG FLAG_FULL 513 514// log.cc 515DEFINE_bool(log, false, 516 "Minimal logging (no API, code, GC, suspect, or handles samples).") 517DEFINE_bool(log_all, false, "Log all events to the log file.") 518DEFINE_bool(log_runtime, false, "Activate runtime system %Log call.") 519DEFINE_bool(log_api, false, "Log API events to the log file.") 520DEFINE_bool(log_code, false, 521 "Log code events to the log file without profiling.") 522DEFINE_bool(log_gc, false, 523 "Log heap samples on garbage collection for the hp2ps tool.") 524DEFINE_bool(log_handles, false, "Log global handle events.") 525DEFINE_bool(log_snapshot_positions, false, 526 "log positions of (de)serialized objects in the snapshot.") 527DEFINE_bool(log_suspect, false, "Log suspect operations.") 528DEFINE_bool(prof, false, 529 "Log statistical profiling information (implies --log-code).") 530DEFINE_bool(prof_auto, true, 531 "Used with --prof, starts profiling automatically") 532DEFINE_bool(prof_lazy, false, 533 "Used with --prof, only does sampling and logging" 534 " when profiler is active (implies --noprof_auto).") 535DEFINE_bool(prof_browser_mode, true, 536 "Used with --prof, turns on browser-compatible mode for profiling.") 537DEFINE_bool(log_regexp, false, "Log regular expression execution.") 538DEFINE_bool(sliding_state_window, false, 539 "Update sliding state window counters.") 540DEFINE_string(logfile, "v8.log", "Specify the name of the log file.") 541DEFINE_bool(ll_prof, false, "Enable low-level linux profiler.") 542 543// 544// Disassembler only flags 545// 546#undef FLAG 547#ifdef ENABLE_DISASSEMBLER 548#define FLAG FLAG_FULL 549#else 550#define FLAG FLAG_READONLY 551#endif 552 553// elements.cc 554DEFINE_bool(trace_elements_transitions, false, "trace elements transitions") 555 556// code-stubs.cc 557DEFINE_bool(print_code_stubs, false, "print code stubs") 558 559// codegen-ia32.cc / codegen-arm.cc 560DEFINE_bool(print_code, false, "print generated code") 561DEFINE_bool(print_opt_code, false, "print optimized code") 562DEFINE_bool(print_unopt_code, false, "print unoptimized code before " 563 "printing optimized code based on it") 564DEFINE_bool(print_code_verbose, false, "print more information for code") 565DEFINE_bool(print_builtin_code, false, "print generated code for builtins") 566 567#ifdef ENABLE_DISASSEMBLER 568DEFINE_bool(print_all_code, false, "enable all flags related to printing code") 569DEFINE_implication(print_all_code, print_code) 570DEFINE_implication(print_all_code, print_opt_code) 571DEFINE_implication(print_all_code, print_unopt_code) 572DEFINE_implication(print_all_code, print_code_verbose) 573DEFINE_implication(print_all_code, print_builtin_code) 574DEFINE_implication(print_all_code, print_code_stubs) 575DEFINE_implication(print_all_code, code_comments) 576#ifdef DEBUG 577DEFINE_implication(print_all_code, trace_codegen) 578#endif 579#endif 580 581// Cleanup... 582#undef FLAG_FULL 583#undef FLAG_READONLY 584#undef FLAG 585 586#undef DEFINE_bool 587#undef DEFINE_int 588#undef DEFINE_string 589#undef DEFINE_implication 590 591#undef FLAG_MODE_DECLARE 592#undef FLAG_MODE_DEFINE 593#undef FLAG_MODE_DEFINE_DEFAULTS 594#undef FLAG_MODE_META 595#undef FLAG_MODE_DEFINE_IMPLICATIONS 596