};
#endif
+#if (defined CAN_USE_VFP3_INSTRUCTIONS) || !(defined ARM_TEST)
+# define ENABLE_VFP3_DEFAULT true
+#else
+# define ENABLE_VFP3_DEFAULT false
+#endif
+#if (defined CAN_USE_ARMV7_INSTRUCTIONS) || !(defined ARM_TEST)
+# define ENABLE_ARMV7_DEFAULT true
+#else
+# define ENABLE_ARMV7_DEFAULT false
+#endif
+#if (defined CAN_USE_VFP32DREGS) || !(defined ARM_TEST)
+# define ENABLE_32DREGS_DEFAULT true
+#else
+# define ENABLE_32DREGS_DEFAULT false
+#endif
+
#define DEFINE_bool(nam, def, cmt) FLAG(BOOL, bool, nam, def, cmt)
#define DEFINE_int(nam, def, cmt) FLAG(INT, int, nam, def, cmt)
#define DEFINE_float(nam, def, cmt) FLAG(FLOAT, double, nam, def, cmt)
// Flags for language modes and experimental language features.
DEFINE_bool(use_strict, false, "enforce strict mode")
+DEFINE_bool(es5_readonly, true,
+ "activate correct semantics for inheriting readonliness")
+DEFINE_bool(es52_globals, true,
+ "activate new semantics for global var declarations")
DEFINE_bool(harmony_typeof, false, "enable harmony semantics for typeof")
DEFINE_bool(harmony_scoping, false, "enable harmony block scoping")
DEFINE_bool(harmony_modules, false,
"enable harmony modules (implies block scoping)")
+DEFINE_bool(harmony_symbols, false,
+ "enable harmony symbols (a.k.a. private names)")
DEFINE_bool(harmony_proxies, false, "enable harmony proxies")
DEFINE_bool(harmony_collections, false,
"enable harmony collections (sets, maps, and weak maps)")
+DEFINE_bool(harmony_observation, false,
+ "enable harmony object observation (implies harmony collections")
+DEFINE_bool(harmony_typed_arrays, false,
+ "enable harmony typed arrays")
+DEFINE_bool(harmony_array_buffer, false,
+ "enable harmony array buffer")
+DEFINE_implication(harmony_typed_arrays, harmony_array_buffer)
+DEFINE_bool(harmony_generators, false, "enable harmony generators")
+DEFINE_bool(harmony_iteration, false, "enable harmony iteration (for-of)")
+DEFINE_bool(harmony_numeric_literals, false,
+ "enable harmony numeric literals (0o77, 0b11)")
+DEFINE_bool(harmony_strings, false, "enable harmony string")
+DEFINE_bool(harmony_arrays, false, "enable harmony arrays")
DEFINE_bool(harmony, false, "enable all harmony features (except typeof)")
DEFINE_implication(harmony, harmony_scoping)
DEFINE_implication(harmony, harmony_modules)
+DEFINE_implication(harmony, harmony_symbols)
DEFINE_implication(harmony, harmony_proxies)
DEFINE_implication(harmony, harmony_collections)
+DEFINE_implication(harmony, harmony_observation)
+DEFINE_implication(harmony, harmony_generators)
+DEFINE_implication(harmony, harmony_iteration)
+DEFINE_implication(harmony, harmony_numeric_literals)
+DEFINE_implication(harmony, harmony_strings)
+DEFINE_implication(harmony, harmony_arrays)
DEFINE_implication(harmony_modules, harmony_scoping)
+DEFINE_implication(harmony_observation, harmony_collections)
+// TODO[dslomov] add harmony => harmony_typed_arrays
// Flags for experimental implementation features.
+DEFINE_bool(packed_arrays, true, "optimizes arrays that have no holes")
DEFINE_bool(smi_only_arrays, true, "tracks arrays with only smi values")
+DEFINE_bool(compiled_keyed_stores, true, "use optimizing compiler to "
+ "generate keyed store stubs")
DEFINE_bool(clever_optimizations,
true,
"Optimize object size, Array shift, DOM strings and string +")
+DEFINE_bool(pretenuring, true, "allocate objects in old space")
+// TODO(hpayer): We will remove this flag as soon as we have pretenuring
+// support for specific allocation sites.
+DEFINE_bool(pretenuring_call_new, false, "pretenure call new")
+DEFINE_bool(track_fields, true, "track fields with only smi values")
+DEFINE_bool(track_double_fields, true, "track fields with double values")
+DEFINE_bool(track_heap_object_fields, true, "track fields with heap values")
+DEFINE_bool(track_computed_fields, true, "track computed boilerplate fields")
+DEFINE_implication(track_double_fields, track_fields)
+DEFINE_implication(track_heap_object_fields, track_fields)
+DEFINE_implication(track_computed_fields, track_fields)
+DEFINE_bool(smi_binop, true, "support smi representation in binary operations")
// Flags for data representation optimizations
DEFINE_bool(unbox_double_arrays, true, "automatically unbox arrays of doubles")
// Flags for Crankshaft.
DEFINE_bool(crankshaft, true, "use crankshaft")
-DEFINE_string(hydrogen_filter, "", "optimization filter")
+DEFINE_string(hydrogen_filter, "*", "optimization filter")
DEFINE_bool(use_range, true, "use hydrogen range analysis")
-DEFINE_bool(eliminate_dead_phis, true, "eliminate dead phis")
DEFINE_bool(use_gvn, true, "use hydrogen global value numbering")
DEFINE_bool(use_canonicalizing, true, "use hydrogen instruction canonicalizing")
DEFINE_bool(use_inlining, true, "use function inlining")
-DEFINE_bool(limit_inlining, true, "limit code size growth from inlining")
+DEFINE_bool(use_escape_analysis, false, "use hydrogen escape analysis")
+DEFINE_bool(use_allocation_folding, true, "use allocation folding")
+DEFINE_int(max_inlining_levels, 5, "maximum number of inlining levels")
+DEFINE_int(max_inlined_source_size, 600,
+ "maximum source size in bytes considered for a single inlining")
+DEFINE_int(max_inlined_nodes, 196,
+ "maximum number of AST nodes considered for a single inlining")
+DEFINE_int(max_inlined_nodes_cumulative, 400,
+ "maximum cumulative number of AST nodes considered for inlining")
DEFINE_bool(loop_invariant_code_motion, true, "loop invariant code motion")
+DEFINE_bool(fast_math, true, "faster (but maybe less accurate) math functions")
DEFINE_bool(collect_megamorphic_maps_from_stub_cache,
true,
"crankshaft harvests type feedback from stub cache")
DEFINE_bool(hydrogen_stats, false, "print statistics for hydrogen")
DEFINE_bool(trace_hydrogen, false, "trace generated hydrogen to file")
-DEFINE_string(trace_phase, "Z", "trace generated IR for specified phases")
+DEFINE_bool(trace_hydrogen_stubs, false, "trace generated hydrogen for stubs")
+DEFINE_string(trace_hydrogen_file, NULL, "trace hydrogen to given file name")
+DEFINE_string(trace_phase, "HLZ", "trace generated IR for specified phases")
DEFINE_bool(trace_inlining, false, "trace inlining decisions")
DEFINE_bool(trace_alloc, false, "trace register allocator")
DEFINE_bool(trace_all_uses, false, "trace all use positions")
DEFINE_bool(trace_range, false, "trace range analysis")
DEFINE_bool(trace_gvn, false, "trace global value numbering")
DEFINE_bool(trace_representation, false, "trace representation types")
+DEFINE_bool(trace_escape_analysis, false, "trace hydrogen escape analysis")
+DEFINE_bool(trace_allocation_folding, false, "trace allocation folding")
+DEFINE_bool(trace_track_allocation_sites, false,
+ "trace the tracking of allocation sites")
+DEFINE_bool(trace_migration, false, "trace object migration")
+DEFINE_bool(trace_generalization, false, "trace map generalization")
DEFINE_bool(stress_pointer_maps, false, "pointer map for every instruction")
DEFINE_bool(stress_environments, false, "environment for every instruction")
DEFINE_int(deopt_every_n_times,
0,
"deoptimize every n times a deopt point is passed")
+DEFINE_int(deopt_every_n_garbage_collections,
+ 0,
+ "deoptimize every n garbage collections")
+DEFINE_bool(print_deopt_stress, false, "print number of possible deopt points")
DEFINE_bool(trap_on_deopt, false, "put a break point before deoptimizing")
+DEFINE_bool(trap_on_stub_deopt, false,
+ "put a break point before deoptimizing a stub")
DEFINE_bool(deoptimize_uncommon_cases, true, "deoptimize uncommon cases")
DEFINE_bool(polymorphic_inlining, true, "polymorphic inlining")
DEFINE_bool(use_osr, true, "use on-stack replacement")
-
+DEFINE_bool(array_bounds_checks_elimination, true,
+ "perform array bounds checks elimination")
+DEFINE_bool(array_bounds_checks_hoisting, false,
+ "perform array bounds checks hoisting")
+DEFINE_bool(array_index_dehoisting, true,
+ "perform array index dehoisting")
+DEFINE_bool(analyze_environment_liveness, true,
+ "analyze liveness of environment slots and zap dead values")
+DEFINE_bool(dead_code_elimination, true, "use dead code elimination")
+DEFINE_bool(fold_constants, true, "use constant folding")
+DEFINE_bool(trace_dead_code_elimination, false, "trace dead code elimination")
+DEFINE_bool(unreachable_code_elimination, false,
+ "eliminate unreachable code (hidden behind soft deopts)")
+DEFINE_bool(track_allocation_sites, true,
+ "Use allocation site info to reduce transitions")
DEFINE_bool(trace_osr, false, "trace on-stack replacement")
DEFINE_int(stress_runs, 0, "number of stress runs")
DEFINE_bool(optimize_closures, true, "optimize closures")
+DEFINE_bool(lookup_sample_by_shared, true,
+ "when picking a function to optimize, watch for shared function "
+ "info, not JSFunction itself")
+DEFINE_bool(cache_optimized_code, true,
+ "cache optimized code for closures")
+DEFINE_bool(flush_optimized_code_cache, true,
+ "flushes the cache of optimized code for closures on every GC")
DEFINE_bool(inline_construct, true, "inline constructor calls")
DEFINE_bool(inline_arguments, true, "inline functions with arguments object")
+DEFINE_bool(inline_accessors, true, "inline JavaScript accessors")
DEFINE_int(loop_weight, 1, "loop weight for representation inference")
DEFINE_bool(optimize_for_in, true,
"optimize functions containing for-in loops")
+DEFINE_bool(opt_safe_uint32_operations, true,
+ "allow uint32 values on optimize frames if they are used only in "
+ "safe operations")
+
+DEFINE_bool(parallel_recompilation, true,
+ "optimizing hot functions asynchronously on a separate thread")
+DEFINE_bool(trace_parallel_recompilation, false, "track parallel recompilation")
+DEFINE_int(parallel_recompilation_queue_length, 8,
+ "the length of the parallel compilation queue")
+DEFINE_int(parallel_recompilation_delay, 0,
+ "artificial compilation delay in ms")
+DEFINE_bool(omit_map_checks_for_leaf_maps, true,
+ "do not emit check maps for constant values that have a leaf map, "
+ "deoptimize the optimized code if the layout of the maps changes.")
// Experimental profiler changes.
DEFINE_bool(experimental_profiler, true, "enable all profiler experiments")
DEFINE_bool(direct_self_opt, false,
"call recompile stub directly when self-optimizing")
DEFINE_bool(retry_self_opt, false, "re-try self-optimization if it failed")
-DEFINE_bool(count_based_interrupts, false,
- "trigger profiler ticks based on counting instead of timing")
DEFINE_bool(interrupt_at_exit, false,
"insert an interrupt check at function exit")
DEFINE_bool(weighted_back_edges, false,
"weight back edges by jump distance for interrupt triggering")
-DEFINE_int(interrupt_budget, 5900,
+ // 0x1700 fits in the immediate field of an ARM instruction.
+DEFINE_int(interrupt_budget, 0x1700,
"execution budget before interrupt is triggered")
-DEFINE_int(type_info_threshold, 15,
+DEFINE_int(type_info_threshold, 25,
"percentage of ICs that must have type info to allow optimization")
DEFINE_int(self_opt_count, 130, "call count before self-optimization")
DEFINE_implication(experimental_profiler, self_optimization)
// Not implying direct_self_opt here because it seems to be a bad idea.
DEFINE_implication(experimental_profiler, retry_self_opt)
-DEFINE_implication(experimental_profiler, count_based_interrupts)
DEFINE_implication(experimental_profiler, interrupt_at_exit)
DEFINE_implication(experimental_profiler, weighted_back_edges)
"enable use of RDTSC instruction if available")
DEFINE_bool(enable_sahf, true,
"enable use of SAHF instruction if available (X64 only)")
-DEFINE_bool(enable_vfp3, true,
- "enable use of VFP3 instructions if available - this implies "
- "enabling ARMv7 instructions (ARM only)")
-DEFINE_bool(enable_armv7, true,
+DEFINE_bool(enable_vfp3, ENABLE_VFP3_DEFAULT,
+ "enable use of VFP3 instructions if available")
+DEFINE_bool(enable_armv7, ENABLE_ARMV7_DEFAULT,
"enable use of ARMv7 instructions if available (ARM only)")
-DEFINE_bool(enable_fpu, true,
- "enable use of MIPS FPU instructions if available (MIPS only)")
+DEFINE_bool(enable_neon, true,
+ "enable use of NEON instructions if available (ARM only)")
+DEFINE_bool(enable_sudiv, true,
+ "enable use of SDIV and UDIV instructions if available (ARM only)")
+DEFINE_bool(enable_movw_movt, false,
+ "enable loading 32-bit constant by means of movw/movt "
+ "instruction pairs (ARM only)")
+DEFINE_bool(enable_unaligned_accesses, true,
+ "enable unaligned accesses for ARMv7 (ARM only)")
+DEFINE_bool(enable_32dregs, ENABLE_32DREGS_DEFAULT,
+ "enable use of d16-d31 registers on ARM - this requires VFP3")
+DEFINE_bool(enable_vldr_imm, false,
+ "enable use of constant pools for double immediate (ARM only)")
// bootstrapper.cc
+DEFINE_bool(enable_i18n, true, "enable i18n extension")
DEFINE_string(expose_natives_as, NULL, "expose natives in global object")
DEFINE_string(expose_debug_as, NULL, "expose debug in global object")
DEFINE_bool(expose_gc, false, "expose gc extension")
+DEFINE_string(expose_gc_as,
+ NULL,
+ "expose gc extension under the specified name")
+DEFINE_implication(expose_gc_as, expose_gc)
DEFINE_bool(expose_externalize_string, false,
"expose externalize string extension")
DEFINE_int(stack_trace_limit, 10, "number of stack frames to capture")
"print a stack trace if an assertion failure occurs")
// codegen-ia32.cc / codegen-arm.cc
+DEFINE_bool(trace_codegen, false,
+ "print name of functions for which code is generated")
DEFINE_bool(trace, false, "trace function calls")
DEFINE_bool(mask_constants_with_cookie,
true,
DEFINE_bool(trace_opt_stats, false, "trace lazy optimization statistics")
DEFINE_bool(opt, true, "use adaptive optimizations")
DEFINE_bool(always_opt, false, "always try to optimize functions")
+DEFINE_bool(always_osr, false, "always try to OSR functions")
DEFINE_bool(prepare_always_opt, false, "prepare for turning on always opt")
-DEFINE_bool(trace_deopt, false, "trace deoptimization")
+DEFINE_bool(trace_deopt, false, "trace optimize function deoptimization")
+DEFINE_bool(trace_stub_failures, false,
+ "trace deoptimization of generated code stubs")
// compiler.cc
DEFINE_int(min_preparse_length, 1024,
"minimum length for automatic enable preparsing")
DEFINE_bool(always_full_compiler, false,
"try to use the dedicated run-once backend for all code")
-DEFINE_bool(trace_bailout, false,
- "print reasons for falling back to using the classic V8 backend")
+DEFINE_int(max_opt_count, 10,
+ "maximum number of optimization attempts before giving up.")
// compilation-cache.cc
DEFINE_bool(compilation_cache, true, "enable compilation cache")
// debug.cc
DEFINE_bool(trace_debug_json, false, "trace debugging JSON request/response")
+DEFINE_bool(trace_js_array_abuse, false,
+ "trace out-of-bounds accesses to JS arrays")
+DEFINE_bool(trace_external_array_abuse, false,
+ "trace out-of-bounds-accesses to external arrays")
+DEFINE_bool(trace_array_abuse, false,
+ "trace out-of-bounds accesses to all arrays")
+DEFINE_implication(trace_array_abuse, trace_js_array_abuse)
+DEFINE_implication(trace_array_abuse, trace_external_array_abuse)
DEFINE_bool(debugger_auto_break, true,
"automatically set the debug break flag when debugger commands are "
"in the queue")
DEFINE_bool(trace_gc_nvp, false,
"print one detailed trace line in name=value format "
"after each garbage collection")
+DEFINE_bool(trace_gc_ignore_scavenger, false,
+ "do not print trace line after scavenger collection")
DEFINE_bool(print_cumulative_gc_stat, false,
"print cumulative GC statistics in name=value format on exit")
DEFINE_bool(trace_gc_verbose, false,
"print more details following each garbage collection")
DEFINE_bool(trace_fragmentation, false,
"report fragmentation for old pointer and data pages")
+DEFINE_bool(trace_external_memory, false,
+ "print amount of external allocated memory after each time "
+ "it is adjusted.")
DEFINE_bool(collect_maps, true,
"garbage collect maps from which no objects can be reached")
+DEFINE_bool(weak_embedded_maps_in_optimized_code, true,
+ "make maps embedded in optimized code weak")
DEFINE_bool(flush_code, true,
- "flush code that we expect not to use again before full gc")
+ "flush code that we expect not to use again (during full gc)")
+DEFINE_bool(flush_code_incrementally, true,
+ "flush code that we expect not to use again (incrementally)")
+DEFINE_bool(trace_code_flushing, false, "trace code flushing progress")
+DEFINE_bool(age_code, true,
+ "track un-executed functions to age code and flush only "
+ "old code (required for code flushing)")
DEFINE_bool(incremental_marking, true, "use incremental marking")
DEFINE_bool(incremental_marking_steps, true, "do incremental marking steps")
DEFINE_bool(trace_incremental_marking, false,
"trace progress of the incremental marking")
+DEFINE_bool(track_gc_object_stats, false,
+ "track object counts and memory usage")
+DEFINE_bool(parallel_sweeping, true, "enable parallel sweeping")
+DEFINE_bool(concurrent_sweeping, false, "enable concurrent sweeping")
+DEFINE_int(sweeper_threads, 0,
+ "number of parallel and concurrent sweeping threads")
+DEFINE_bool(parallel_marking, false, "enable parallel marking")
+DEFINE_int(marking_threads, 0, "number of parallel marking threads")
+#ifdef VERIFY_HEAP
+DEFINE_bool(verify_heap, false, "verify heap pointers before and after GC")
+#endif
// v8.cc
DEFINE_bool(use_idle_notification, true,
"Use idle notification to reduce memory footprint.")
-
-DEFINE_bool(send_idle_notification, false,
- "Send idle notifcation between stress runs.")
// ic.cc
DEFINE_bool(use_ic, true, "use inline caching")
-#ifdef LIVE_OBJECT_LIST
-// liveobjectlist.cc
-DEFINE_string(lol_workdir, NULL, "path for lol temp files")
-DEFINE_bool(verify_lol, false, "perform debugging verification for lol")
-#endif
-
// macro-assembler-ia32.cc
DEFINE_bool(native_code_counters, false,
"generate extra code for manipulating stats counters")
"Never perform compaction on full GC - testing only")
DEFINE_bool(compact_code_space, true,
"Compact code space on full non-incremental collections")
+DEFINE_bool(incremental_code_compaction, true,
+ "Compact code space on full incremental collections")
DEFINE_bool(cleanup_code_caches_at_gc, true,
"Flush inline caches prior to mark compact collection and "
"flush code caches in maps during mark compact cycle.")
+DEFINE_bool(use_marking_progress_bar, true,
+ "Use a progress bar to scan large objects in increments when "
+ "incremental marking is active.")
DEFINE_int(random_seed, 0,
"Default seed for initializing random generator "
"(0, the default, means to use system random).")
// parser.cc
DEFINE_bool(allow_natives_syntax, false, "allow natives syntax")
+DEFINE_bool(trace_parse, false, "trace parsing and preparsing")
// simulator-arm.cc and simulator-mips.cc
DEFINE_bool(trace_sim, false, "Trace simulator execution")
"Stack alingment in bytes in simulator (4 or 8, 8 is default)")
// isolate.cc
+DEFINE_bool(abort_on_uncaught_exception, false,
+ "abort program (dump core) when an uncaught exception is thrown")
DEFINE_bool(trace_exception, false,
"print stack trace when throwing exceptions")
DEFINE_bool(preallocate_message_memory, false,
"file in which to serialize heap")
#endif
+// mksnapshot.cc
+DEFINE_string(extra_code, NULL, "A filename with extra code to be included in"
+ " the snapshot (mksnapshot only)")
+
//
// Dev shell flags
//
"enable asserts that are slow to execute")
// codegen-ia32.cc / codegen-arm.cc
-DEFINE_bool(trace_codegen, false,
- "print name of functions for which code is generated")
DEFINE_bool(print_source, false, "pretty print source code")
DEFINE_bool(print_builtin_source, false,
"pretty print source code for builtins")
DEFINE_bool(gc_verbose, false, "print stuff during garbage collection")
DEFINE_bool(heap_stats, false, "report heap statistics before and after GC")
DEFINE_bool(code_stats, false, "report code statistics after GC")
-DEFINE_bool(verify_heap, false, "verify heap pointers before and after GC")
+DEFINE_bool(verify_native_context_separation, false,
+ "verify that code holds on to at most one native context after GC")
DEFINE_bool(print_handles, false, "report handles after GC")
DEFINE_bool(print_global_handles, false, "report global handles after GC")
DEFINE_bool(trace_isolates, false, "trace isolate state changes")
-// VM state
-DEFINE_bool(log_state_changes, false, "Log state changes.")
-
// Regexp
DEFINE_bool(regexp_possessive_quantifier,
false,
DEFINE_bool(log_suspect, false, "Log suspect operations.")
DEFINE_bool(prof, false,
"Log statistical profiling information (implies --log-code).")
-DEFINE_bool(prof_auto, true,
- "Used with --prof, starts profiling automatically")
DEFINE_bool(prof_lazy, false,
"Used with --prof, only does sampling and logging"
- " when profiler is active (implies --noprof_auto).")
+ " when profiler is active.")
DEFINE_bool(prof_browser_mode, true,
"Used with --prof, turns on browser-compatible mode for profiling.")
DEFINE_bool(log_regexp, false, "Log regular expression execution.")
-DEFINE_bool(sliding_state_window, false,
- "Update sliding state window counters.")
DEFINE_string(logfile, "v8.log", "Specify the name of the log file.")
DEFINE_bool(ll_prof, false, "Enable low-level linux profiler.")
+DEFINE_string(gc_fake_mmap, "/tmp/__v8_gc__",
+ "Specify the name of the file for fake gc mmap used in ll_prof")
+DEFINE_bool(log_internal_timer_events, false, "Time internal events.")
+DEFINE_bool(log_timer_events, false,
+ "Time events including external callbacks.")
+DEFINE_implication(log_timer_events, log_internal_timer_events)
+DEFINE_implication(log_internal_timer_events, prof)
//
// Disassembler only flags
projects / platform / upstream / nodejs.git / blobdiff