Skip to content

Instantly share code, notes, and snippets.

Embed
What would you like to do?
node 8 v8 options
$ node --v8-options > node_8_v8_options
SSE3=1 SSSE3=1 SSE4_1=1 SAHF=1 AVX=1 FMA3=1 BMI1=1 BMI2=1 LZCNT=1 POPCNT=1 ATOM=0
Usage:
shell [options] -e string
execute string in V8
shell [options] file1 file2 ... filek
run JavaScript scripts in file1, file2, ..., filek
shell [options]
shell [options] --shell [file1 file2 ... filek]
run an interactive JavaScript shell
d8 [options] file1 file2 ... filek
d8 [options]
d8 [options] --shell [file1 file2 ... filek]
run the new debugging shell
Options:
--experimental_extras (enable code compiled in via v8_experimental_extra_library_files)
type: bool default: false
--use_strict (enforce strict mode)
type: bool default: false
--es_staging (enable test-worthy harmony features (for internal use only))
type: bool default: false
--harmony (enable all completed harmony features)
type: bool default: false
--harmony_shipping (enable all shipped harmony features)
type: bool default: true
--harmony_array_prototype_values (enable "harmony Array.prototype.values" (in progress))
type: bool default: false
--harmony_function_sent (enable "harmony function.sent" (in progress))
type: bool default: false
--harmony_tailcalls (enable "harmony tail calls" (in progress))
type: bool default: false
--harmony_sharedarraybuffer (enable "harmony sharedarraybuffer" (in progress))
type: bool default: false
--harmony_do_expressions (enable "harmony do-expressions" (in progress))
type: bool default: false
--harmony_regexp_named_captures (enable "harmony regexp named captures" (in progress))
type: bool default: false
--harmony_regexp_property (enable "harmony unicode regexp property classes" (in progress))
type: bool default: false
--harmony_function_tostring (enable "harmony Function.prototype.toString" (in progress))
type: bool default: false
--harmony_class_fields (enable "harmony public fields in class literals" (in progress))
type: bool default: false
--harmony_async_iteration (enable "harmony async iteration" (in progress))
type: bool default: false
--harmony_dynamic_import (enable "harmony dynamic import" (in progress))
type: bool default: false
--harmony_promise_finally (enable "harmony Promise.prototype.finally" (in progress))
type: bool default: false
--harmony_regexp_lookbehind (enable "harmony regexp lookbehind")
type: bool default: false
--harmony_restrictive_generators (enable "harmony restrictions on generator declarations")
type: bool default: false
--harmony_object_rest_spread (enable "harmony object rest spread properties")
type: bool default: false
--harmony_template_escapes (enable "harmony invalid escapes in tagged template literals")
type: bool default: false
--harmony_trailing_commas (enable "harmony trailing commas in function parameter lists")
type: bool default: true
--datetime_format_to_parts (enable "Intl.DateTimeFormat.formatToParts")
type: bool default: true
--icu_case_mapping (enable "case mapping with ICU rather than Unibrow")
type: bool default: true
--future (Implies all staged features that we want to ship in the not-too-far future)
type: bool default: false
--ignition_staging (use ignition with all staged features)
type: bool default: false
--allocation_site_pretenuring (pretenure with allocation sites)
type: bool default: true
--mark_shared_functions_for_tier_up (mark shared functions for tier up)
type: bool default: true
--page_promotion (promote pages based on utilization)
type: bool default: true
--page_promotion_threshold (min percentage of live bytes on a page to enable fast evacuation)
type: int default: 70
--smi_binop (support smi representation in binary operations)
type: bool default: true
--trace_pretenuring (trace pretenuring decisions of HAllocate instructions)
type: bool default: false
--trace_pretenuring_statistics (trace allocation site pretenuring statistics)
type: bool default: false
--track_fields (track fields with only smi values)
type: bool default: true
--track_double_fields (track fields with double values)
type: bool default: true
--track_heap_object_fields (track fields with heap values)
type: bool default: true
--track_computed_fields (track computed boilerplate fields)
type: bool default: true
--track_field_types (track field types)
type: bool default: true
--type_profile (collect type information)
type: bool default: false
--optimize_for_size (Enables optimizations which favor memory size over execution speed)
type: bool default: false
--unbox_double_arrays (automatically unbox arrays of doubles)
type: bool default: true
--string_slices (use string slices)
type: bool default: true
--ignition (use ignition interpreter)
type: bool default: false
--ignition_deadcode (use ignition dead code elimination optimizer)
type: bool default: true
--ignition_osr (enable support for OSR from ignition code)
type: bool default: true
--ignition_peephole (use ignition peephole optimizer)
type: bool default: true
--ignition_reo (use ignition register equivalence optimizer)
type: bool default: true
--ignition_filter_expression_positions (filter expression positions before the bytecode pipeline)
type: bool default: true
--print_bytecode (print bytecode generated by ignition interpreter)
type: bool default: false
--print_bytecode_filter (filter for selecting which functions to print bytecode)
type: string default: *
--trace_ignition (trace the bytecodes executed by the ignition interpreter)
type: bool default: false
--trace_ignition_codegen (trace the codegen of ignition interpreter bytecode handlers)
type: bool default: false
--trace_ignition_dispatches (traces the dispatches to bytecode handlers by the ignition interpreter)
type: bool default: false
--trace_ignition_dispatches_output_file (the file to which the bytecode handler dispatch table is written (by default, the table is not written to a file))
type: string default: NULL
--crankshaft (use crankshaft)
type: bool default: true
--hydrogen_filter (optimization filter)
type: string default: *
--use_gvn (use hydrogen global value numbering)
type: bool default: true
--gvn_iterations (maximum number of GVN fix-point iterations)
type: int default: 3
--use_canonicalizing (use hydrogen instruction canonicalizing)
type: bool default: true
--use_inlining (use function inlining)
type: bool default: true
--use_escape_analysis (use hydrogen escape analysis)
type: bool default: true
--use_allocation_folding (use allocation folding)
type: bool default: true
--use_local_allocation_folding (only fold in basic blocks)
type: bool default: false
--use_write_barrier_elimination (eliminate write barriers targeting allocations in optimized code)
type: bool default: true
--max_inlining_levels (maximum number of inlining levels)
type: int default: 5
--max_inlined_source_size (maximum source size in bytes considered for a single inlining)
type: int default: 600
--max_inlined_nodes (maximum number of AST nodes considered for a single inlining)
type: int default: 200
--max_inlined_nodes_cumulative (maximum cumulative number of AST nodes considered for inlining)
type: int default: 400
--loop_invariant_code_motion (loop invariant code motion)
type: bool default: true
--fast_math (faster (but maybe less accurate) math functions)
type: bool default: true
--collect_megamorphic_maps_from_stub_cache (crankshaft harvests type feedback from stub cache)
type: bool default: false
--hydrogen_stats (print statistics for hydrogen)
type: bool default: false
--trace_check_elimination (trace check elimination phase)
type: bool default: false
--trace_environment_liveness (trace liveness of local variable slots)
type: bool default: false
--trace_hydrogen (trace generated hydrogen to file)
type: bool default: false
--trace_hydrogen_filter (hydrogen tracing filter)
type: string default: *
--trace_hydrogen_stubs (trace generated hydrogen for stubs)
type: bool default: false
--trace_hydrogen_file (trace hydrogen to given file name)
type: string default: NULL
--trace_phase (trace generated IR for specified phases)
type: string default: HLZ
--trace_inlining (trace inlining decisions)
type: bool default: false
--trace_load_elimination (trace load elimination)
type: bool default: false
--trace_store_elimination (trace store elimination)
type: bool default: false
--turbo_verify_store_elimination (verify store elimination more rigorously)
type: bool default: false
--trace_alloc (trace register allocator)
type: bool default: false
--trace_all_uses (trace all use positions)
type: bool default: false
--trace_range (trace range analysis)
type: bool default: false
--trace_gvn (trace global value numbering)
type: bool default: false
--trace_representation (trace representation types)
type: bool default: false
--trace_removable_simulates (trace removable simulates)
type: bool default: false
--trace_escape_analysis (trace hydrogen escape analysis)
type: bool default: false
--trace_allocation_folding (trace allocation folding)
type: bool default: false
--trace_track_allocation_sites (trace the tracking of allocation sites)
type: bool default: false
--trace_migration (trace object migration)
type: bool default: false
--trace_generalization (trace map generalization)
type: bool default: false
--stress_pointer_maps (pointer map for every instruction)
type: bool default: false
--stress_environments (environment for every instruction)
type: bool default: false
--deopt_every_n_times (deoptimize every n times a deopt point is passed)
type: int default: 0
--deopt_every_n_garbage_collections (deoptimize every n garbage collections)
type: int default: 0
--print_deopt_stress (print number of possible deopt points)
type: bool default: false
--trap_on_deopt (put a break point before deoptimizing)
type: bool default: false
--trap_on_stub_deopt (put a break point before deoptimizing a stub)
type: bool default: false
--deoptimize_uncommon_cases (deoptimize uncommon cases)
type: bool default: true
--polymorphic_inlining (polymorphic inlining)
type: bool default: true
--use_osr (use on-stack replacement)
type: bool default: true
--array_bounds_checks_elimination (perform array bounds checks elimination)
type: bool default: true
--trace_bce (trace array bounds check elimination)
type: bool default: false
--array_index_dehoisting (perform array index dehoisting)
type: bool default: true
--analyze_environment_liveness (analyze liveness of environment slots and zap dead values)
type: bool default: true
--load_elimination (use load elimination)
type: bool default: true
--check_elimination (use check elimination)
type: bool default: true
--store_elimination (use store elimination)
type: bool default: false
--dead_code_elimination (use dead code elimination)
type: bool default: true
--fold_constants (use constant folding)
type: bool default: true
--trace_dead_code_elimination (trace dead code elimination)
type: bool default: false
--unreachable_code_elimination (eliminate unreachable code)
type: bool default: true
--trace_osr (trace on-stack replacement)
type: bool default: false
--stress_runs (number of stress runs)
type: int default: 0
--lookup_sample_by_shared (when picking a function to optimize, watch for shared function info, not JSFunction itself)
type: bool default: true
--flush_optimized_code_cache (flushes the cache of optimized code for closures on every GC)
type: bool default: false
--inline_construct (inline constructor calls)
type: bool default: true
--inline_arguments (inline functions with arguments object)
type: bool default: true
--inline_accessors (inline JavaScript accessors)
type: bool default: true
--inline_into_try (inline into try blocks)
type: bool default: true
--escape_analysis_iterations (maximum number of escape analysis fix-point iterations)
type: int default: 1
--concurrent_recompilation (optimizing hot functions asynchronously on a separate thread)
type: bool default: true
--trace_concurrent_recompilation (track concurrent recompilation)
type: bool default: false
--concurrent_recompilation_queue_length (the length of the concurrent compilation queue)
type: int default: 8
--concurrent_recompilation_delay (artificial compilation delay in ms)
type: int default: 0
--block_concurrent_recompilation (block queued jobs until released)
type: bool default: false
--omit_map_checks_for_leaf_maps (do not emit check maps for constant values that have a leaf map, deoptimize the optimized code if the layout of the maps changes.)
type: bool default: true
--turbo (enable TurboFan compiler)
type: bool default: false
--turbo_sp_frame_access (use stack pointer-relative access to frame wherever possible)
type: bool default: false
--turbo_preprocess_ranges (run pre-register allocation heuristics)
type: bool default: true
--turbo_filter (optimization filter for TurboFan compiler)
type: string default: ~~
--trace_turbo (trace generated TurboFan IR)
type: bool default: false
--trace_turbo_graph (trace generated TurboFan graphs)
type: bool default: false
--trace_turbo_cfg_file (trace turbo cfg graph (for C1 visualizer) to a given file name)
type: string default: NULL
--trace_turbo_types (trace TurboFan's types)
type: bool default: true
--trace_turbo_scheduler (trace TurboFan's scheduler)
type: bool default: false
--trace_turbo_reduction (trace TurboFan's various reducers)
type: bool default: false
--trace_turbo_trimming (trace TurboFan's graph trimmer)
type: bool default: false
--trace_turbo_jt (trace TurboFan's jump threading)
type: bool default: false
--trace_turbo_ceq (trace TurboFan's control equivalence)
type: bool default: false
--trace_turbo_loop (trace TurboFan's loop optimizations)
type: bool default: false
--turbo_asm (enable TurboFan for asm.js code)
type: bool default: true
--turbo_verify (verify TurboFan graphs at each phase)
type: bool default: false
--turbo_verify_machine_graph (verify TurboFan machine graph before instruction selection)
type: string default: NULL
--trace_verify_csa (trace code stubs verification)
type: bool default: false
--csa_trap_on_node (trigger break point when a node with given id is created in given stub. The format is: StubName,NodeId)
type: string default: NULL
--turbo_stats (print TurboFan statistics)
type: bool default: false
--turbo_stats_nvp (print TurboFan statistics in machine-readable format)
type: bool default: false
--turbo_splitting (split nodes during scheduling in TurboFan)
type: bool default: true
--function_context_specialization (enable function context specialization in TurboFan)
type: bool default: false
--turbo_inlining (enable inlining in TurboFan)
type: bool default: true
--trace_turbo_inlining (trace TurboFan inlining)
type: bool default: false
--turbo_load_elimination (enable load elimination in TurboFan)
type: bool default: true
--trace_turbo_load_elimination (trace TurboFan load elimination)
type: bool default: false
--loop_assignment_analysis (perform loop assignment analysis)
type: bool default: true
--turbo_profiling (enable profiling in TurboFan)
type: bool default: false
--turbo_verify_allocation (verify register allocation in TurboFan)
type: bool default: false
--turbo_move_optimization (optimize gap moves in TurboFan)
type: bool default: true
--turbo_jt (enable jump threading in TurboFan)
type: bool default: true
--turbo_loop_peeling (Turbofan loop peeling)
type: bool default: true
--turbo_loop_variable (Turbofan loop variable optimization)
type: bool default: true
--turbo_cf_optimization (optimize control flow in TurboFan)
type: bool default: true
--turbo_frame_elision (elide frames in TurboFan)
type: bool default: true
--turbo_escape (enable escape analysis)
type: bool default: true
--turbo_instruction_scheduling (enable instruction scheduling in TurboFan)
type: bool default: false
--turbo_stress_instruction_scheduling (randomly schedule instructions to stress dependency tracking)
type: bool default: false
--turbo_store_elimination (enable store-store elimination in TurboFan)
type: bool default: true
--minimal (simplifies execution model to make porting easier (e.g. always use Ignition, never use Crankshaft)
type: bool default: false
--expose_wasm (expose WASM interface to JavaScript)
type: bool default: true
--assume_asmjs_origin (force wasm decoder to assume input is internal asm-wasm format)
type: bool default: false
--wasm_disable_structured_cloning (disable WASM structured cloning)
type: bool default: false
--wasm_num_compilation_tasks (number of parallel compilation tasks for wasm)
type: int default: 10
--wasm_max_mem_pages (maximum memory size of a wasm instance)
type: uint default: 16384
--wasm_max_table_size (maximum table size of a wasm instance)
type: uint default: 10000000
--trace_wasm_encoder (trace encoding of wasm code)
type: bool default: false
--trace_wasm_decoder (trace decoding of wasm code)
type: bool default: false
--trace_wasm_decode_time (trace decoding time of wasm code)
type: bool default: false
--trace_wasm_compiler (trace compiling of wasm code)
type: bool default: false
--trace_wasm_interpreter (trace interpretation of wasm code)
type: bool default: false
--trace_wasm_ast_start (start function for WASM AST trace (inclusive))
type: int default: 0
--trace_wasm_ast_end (end function for WASM AST trace (exclusive))
type: int default: 0
--trace_wasm_text_start (start function for WASM text generation (inclusive))
type: int default: 0
--trace_wasm_text_end (end function for WASM text generation (exclusive))
type: int default: 0
--skip_compiling_wasm_funcs (start compiling at function N)
type: int default: 0
--wasm_break_on_decoder_error (debug break when wasm decoder encounters an error)
type: bool default: false
--wasm_loop_assignment_analysis (perform loop assignment analysis for WASM)
type: bool default: true
--validate_asm (validate asm.js modules before compiling)
type: bool default: false
--suppress_asm_messages (don't emit asm.js related messages (for golden file testing))
type: bool default: false
--trace_asm_time (log asm.js timing info to the console)
type: bool default: false
--dump_wasm_module (dump WASM module bytes)
type: bool default: false
--dump_wasm_module_path (directory to dump wasm modules to)
type: string default: NULL
--typed_array_max_size_in_heap (threshold for in-heap typed array)
type: int default: 64
--wasm_simd_prototype (enable prototype simd opcodes for wasm)
type: bool default: false
--wasm_eh_prototype (enable prototype exception handling opcodes for wasm)
type: bool default: false
--wasm_mv_prototype (enable prototype multi-value support for wasm)
type: bool default: false
--wasm_atomics_prototype (enable prototype atomic opcodes for wasm)
type: bool default: false
--wasm_opt (enable wasm optimization)
type: bool default: true
--wasm_no_bounds_checks (disable bounds checks (performance testing only))
type: bool default: false
--wasm_no_stack_checks (disable stack checks (performance testing only))
type: bool default: false
--wasm_trap_handler (use signal handlers to catch out of bounds memory access in wasm (experimental, currently Linux x86_64 only))
type: bool default: false
--wasm_guard_pages (add guard pages to the end of WebWassembly memory (experimental, no effect on 32-bit))
type: bool default: false
--wasm_trap_if (enable the use of the trap_if operator for traps)
type: bool default: true
--wasm_code_fuzzer_gen_test (Generate a test case when running the wasm-code fuzzer)
type: bool default: false
--print_wasm_code (Print WebAssembly code)
type: bool default: false
--frame_count (number of stack frames inspected by the profiler)
type: int default: 1
--interrupt_budget (execution budget before interrupt is triggered)
type: int default: 6144
--type_info_threshold (percentage of ICs that must have type info to allow optimization)
type: int default: 25
--generic_ic_threshold (max percentage of megamorphic/generic ICs to allow optimization)
type: int default: 30
--self_opt_count (call count before self-optimization)
type: int default: 130
--trace_opt_verbose (extra verbose compilation tracing)
type: bool default: false
--min_semi_space_size (min size of a semi-space (in MBytes), the new space consists of twosemi-spaces)
type: int default: 0
--max_semi_space_size (max size of a semi-space (in MBytes), the new space consists of twosemi-spaces)
type: int default: 0
--semi_space_growth_factor (factor by which to grow the new space)
type: int default: 2
--experimental_new_space_growth_heuristic (Grow the new space based on the percentage of survivors instead of their absolute value.)
type: bool default: false
--max_old_space_size (max size of the old space (in Mbytes))
type: int default: 0
--initial_old_space_size (initial old space size (in Mbytes))
type: int default: 0
--gc_global (always perform global GCs)
type: bool default: false
--gc_interval (garbage collect after <n> allocations)
type: int default: -1
--retain_maps_for_n_gc (keeps maps alive for <n> old space garbage collections)
type: int default: 2
--trace_gc (print one trace line following each garbage collection)
type: bool default: false
--trace_gc_nvp (print one detailed trace line in name=value format after each garbage collection)
type: bool default: false
--trace_gc_ignore_scavenger (do not print trace line after scavenger collection)
type: bool default: false
--trace_idle_notification (print one trace line following each idle notification)
type: bool default: false
--trace_idle_notification_verbose (prints the heap state used by the idle notification)
type: bool default: false
--trace_gc_verbose (print more details following each garbage collection)
type: bool default: false
--trace_allocation_stack_interval (print stack trace after <n> free-list allocations)
type: int default: -1
--trace_fragmentation (report fragmentation for old space)
type: bool default: false
--trace_fragmentation_verbose (report fragmentation for old space (detailed))
type: bool default: false
--trace_evacuation (report evacuation statistics)
type: bool default: false
--trace_mutator_utilization (print mutator utilization, allocation speed, gc speed)
type: bool default: false
--flush_code (flush code that we expect not to use again)
type: bool default: true
--trace_code_flushing (trace code flushing progress)
type: bool default: false
--age_code (track un-executed functions to age code and flush only old code (required for code flushing))
type: bool default: true
--incremental_marking (use incremental marking)
type: bool default: true
--incremental_marking_wrappers (use incremental marking for marking wrappers)
type: bool default: true
--min_progress_during_incremental_marking_finalization (keep finalizing incremental marking as long as we discover at least this many unmarked objects)
type: int default: 32
--max_incremental_marking_finalization_rounds (at most try this many times to finalize incremental marking)
type: int default: 3
--minor_mc (perform young generation mark compact GCs)
type: bool default: false
--black_allocation (use black allocation)
type: bool default: true
--concurrent_sweeping (use concurrent sweeping)
type: bool default: true
--parallel_compaction (use parallel compaction)
type: bool default: true
--parallel_pointer_update (use parallel pointer update during compaction)
type: bool default: true
--trace_incremental_marking (trace progress of the incremental marking)
type: bool default: false
--track_gc_object_stats (track object counts and memory usage)
type: bool default: false
--trace_gc_object_stats (trace object counts and memory usage)
type: bool default: false
--gc_stats (Used by tracing internally to enable gc statistics)
type: int default: 0
--track_detached_contexts (track native contexts that are expected to be garbage collected)
type: bool default: true
--trace_detached_contexts (trace native contexts that are expected to be garbage collected)
type: bool default: false
--move_object_start (enable moving of object starts)
type: bool default: true
--memory_reducer (use memory reducer)
type: bool default: true
--heap_growing_percent (specifies heap growing factor as (1 + heap_growing_percent/100))
type: int default: 0
--v8_os_page_size (override OS page size (in KBytes))
type: int default: 0
--always_compact (Perform compaction on every full GC)
type: bool default: false
--never_compact (Never perform compaction on full GC - testing only)
type: bool default: false
--compact_code_space (Compact code space on full collections)
type: bool default: true
--cleanup_code_caches_at_gc (Flush code caches in maps during mark compact cycle.)
type: bool default: true
--use_marking_progress_bar (Use a progress bar to scan large objects in increments when incremental marking is active.)
type: bool default: true
--zap_code_space (Zap free memory in code space with 0xCC while sweeping.)
type: bool default: false
--force_marking_deque_overflows (force overflows of marking deque by reducing it's size to 64 words)
type: bool default: false
--stress_compaction (stress the GC compactor to flush out bugs (implies --force_marking_deque_overflows))
type: bool default: false
--manual_evacuation_candidates_selection (Test mode only flag. It allows an unit test to select evacuation candidates pages (requires --stress_compaction).)
type: bool default: false
--fast_promotion_new_space (fast promote new space on high survival rates)
type: bool default: false
--debug_code (generate extra code (assertions) for debugging)
type: bool default: false
--code_comments (emit comments in code disassembly)
type: bool default: false
--enable_sse3 (enable use of SSE3 instructions if available)
type: bool default: true
--enable_ssse3 (enable use of SSSE3 instructions if available)
type: bool default: true
--enable_sse4_1 (enable use of SSE4.1 instructions if available)
type: bool default: true
--enable_sahf (enable use of SAHF instruction if available (X64 only))
type: bool default: true
--enable_avx (enable use of AVX instructions if available)
type: bool default: true
--enable_fma3 (enable use of FMA3 instructions if available)
type: bool default: true
--enable_bmi1 (enable use of BMI1 instructions if available)
type: bool default: true
--enable_bmi2 (enable use of BMI2 instructions if available)
type: bool default: true
--enable_lzcnt (enable use of LZCNT instruction if available)
type: bool default: true
--enable_popcnt (enable use of POPCNT instruction if available)
type: bool default: true
--arm_arch (generate instructions for the selected ARM architecture if available: armv6, armv7, armv7+sudiv or armv8)
type: string default: armv8
--enable_vldr_imm (enable use of constant pools for double immediate (ARM only))
type: bool default: false
--force_long_branches (force all emitted branches to be in long mode (MIPS/PPC only))
type: bool default: false
--mcpu (enable optimization for specific cpu)
type: string default: auto
--enable_armv7 (deprecated (use --arm_arch instead))
type: maybe_bool default: unset
--enable_vfp3 (deprecated (use --arm_arch instead))
type: maybe_bool default: unset
--enable_32dregs (deprecated (use --arm_arch instead))
type: maybe_bool default: unset
--enable_neon (deprecated (use --arm_arch instead))
type: maybe_bool default: unset
--enable_sudiv (deprecated (use --arm_arch instead))
type: maybe_bool default: unset
--enable_armv8 (deprecated (use --arm_arch instead))
type: maybe_bool default: unset
--enable_regexp_unaligned_accesses (enable unaligned accesses for the regexp engine)
type: bool default: true
--script_streaming (enable parsing on background)
type: bool default: true
--disable_old_api_accessors (Disable old-style API accessors whose setters trigger through the prototype chain)
type: bool default: false
--expose_natives_as (expose natives in global object)
type: string default: NULL
--expose_free_buffer (expose freeBuffer extension)
type: bool default: false
--expose_gc (expose gc extension)
type: bool default: false
--expose_gc_as (expose gc extension under the specified name)
type: string default: NULL
--expose_externalize_string (expose externalize string extension)
type: bool default: false
--expose_trigger_failure (expose trigger-failure extension)
type: bool default: false
--stack_trace_limit (number of stack frames to capture)
type: int default: 10
--builtins_in_stack_traces (show built-in functions in stack traces)
type: bool default: false
--enable_fast_array_builtins (use optimized builtins)
type: bool default: false
--allow_unsafe_function_constructor (allow invoking the function constructor without security checks)
type: bool default: false
--inline_new (use fast inline allocation)
type: bool default: true
--trace_codegen (print name of functions for which code is generated)
type: bool default: false
--trace (trace function calls)
type: bool default: false
--mask_constants_with_cookie (use random jit cookie to mask large constants)
type: bool default: true
--lazy (use lazy compilation)
type: bool default: true
--trace_opt (trace lazy optimization)
type: bool default: false
--trace_opt_stats (trace lazy optimization statistics)
type: bool default: false
--trace_file_names (include file names in trace-opt/trace-deopt output)
type: bool default: false
--opt (use adaptive optimizations)
type: bool default: true
--always_opt (always try to optimize functions)
type: bool default: false
--always_osr (always try to OSR functions)
type: bool default: false
--prepare_always_opt (prepare for turning on always opt)
type: bool default: false
--trace_deopt (trace optimize function deoptimization)
type: bool default: false
--trace_stub_failures (trace deoptimization of generated code stubs)
type: bool default: false
--serialize_toplevel (enable caching of toplevel scripts)
type: bool default: true
--serialize_eager (compile eagerly when caching scripts)
type: bool default: false
--serialize_age_code (pre age code in the code cache)
type: bool default: false
--trace_serializer (print code serializer trace)
type: bool default: false
--max_opt_count (maximum number of optimization attempts before giving up.)
type: int default: 10
--compilation_cache (enable compilation cache)
type: bool default: true
--cache_prototype_transitions (cache prototype transitions)
type: bool default: true
--compiler_dispatcher (enable compiler dispatcher)
type: bool default: false
--compiler_dispatcher_eager_inner (enable background compilation of eager inner functions)
type: bool default: false
--trace_compiler_dispatcher (trace compiler dispatcher activity)
type: bool default: false
--trace_compiler_dispatcher_jobs (trace progress of individual jobs managed by the compiler dispatcher)
type: bool default: false
--cpu_profiler_sampling_interval (CPU profiler sampling interval in microseconds)
type: int default: 1000
--trace_js_array_abuse (trace out-of-bounds accesses to JS arrays)
type: bool default: false
--trace_external_array_abuse (trace out-of-bounds-accesses to external arrays)
type: bool default: false
--trace_array_abuse (trace out-of-bounds accesses to all arrays)
type: bool default: false
--trace_debug_json (trace debugging JSON request/response)
type: bool default: false
--enable_liveedit (enable liveedit experimental feature)
type: bool default: true
--trace_side_effect_free_debug_evaluate (print debug messages for side-effect-free debug-evaluate for testing)
type: bool default: false
--hard_abort (abort by crashing)
type: bool default: true
--stack_size (default size of stack region v8 is allowed to use (in kBytes))
type: int default: 984
--max_stack_trace_source_length (maximum length of function source code printed in a stack trace.)
type: int default: 300
--always_inline_smi_code (always inline smi code in non-opt code)
type: bool default: false
--verify_operand_stack_depth (emit debug code that verifies the static tracking of the operand stack depth)
type: bool default: false
--clear_exceptions_on_js_entry (clear pending exceptions when entering JavaScript)
type: bool default: false
--histogram_interval (time interval in ms for aggregating memory histograms)
type: int default: 600000
--trace_object_groups (print object groups detected during each garbage collection)
type: bool default: false
--heap_profiler_trace_objects (Dump heap object allocations/movements/size_updates)
type: bool default: false
--sampling_heap_profiler_suppress_randomness (Use constant sample intervals to eliminate test flakiness)
type: bool default: false
--use_idle_notification (Use idle notification to reduce memory footprint.)
type: bool default: true
--use_ic (use inline caching)
type: bool default: true
--trace_ic (trace inline cache state transitions)
type: bool default: false
--ic_stats (inline cache state transitions statistics)
type: int default: 0
--native_code_counters (generate extra code for manipulating stats counters)
type: bool default: false
--thin_strings (Enable ThinString support)
type: bool default: false
--trace_weak_arrays (Trace WeakFixedArray usage)
type: bool default: false
--trace_prototype_users (Trace updates to prototype user tracking)
type: bool default: false
--use_verbose_printer (allows verbose printing)
type: bool default: true
--trace_for_in_enumerate (Trace for-in enumerate slow-paths)
type: bool default: false
--allow_natives_syntax (allow natives syntax)
type: bool default: false
--trace_parse (trace parsing and preparsing)
type: bool default: false
--trace_preparse (trace preparsing decisions)
type: bool default: false
--lazy_inner_functions (enable lazy parsing inner functions)
type: bool default: true
--aggressive_lazy_inner_functions (even lazier inner function parsing)
type: bool default: false
--preparser_scope_analysis (perform scope analysis for preparsed inner functions)
type: bool default: false
--trace_sim (Trace simulator execution)
type: bool default: false
--debug_sim (Enable debugging the simulator)
type: bool default: false
--check_icache (Check icache flushes in ARM and MIPS simulator)
type: bool default: false
--stop_sim_at (Simulator stop after x number of instructions)
type: int default: 0
--sim_stack_alignment (Stack alingment in bytes in simulator (4 or 8, 8 is default))
type: int default: 8
--sim_stack_size (Stack size of the ARM64, MIPS64 and PPC64 simulator in kBytes (default is 2 MB))
type: int default: 2048
--log_regs_modified (When logging register values, only print modified registers.)
type: bool default: true
--log_colour (When logging, try to use coloured output.)
type: bool default: true
--ignore_asm_unimplemented_break (Don't break for ASM_UNIMPLEMENTED_BREAK macros.)
type: bool default: false
--trace_sim_messages (Trace simulator debug messages. Implied by --trace-sim.)
type: bool default: false
--stack_trace_on_illegal (print stack trace when an illegal exception is thrown)
type: bool default: false
--abort_on_uncaught_exception (abort program (dump core) when an uncaught exception is thrown)
type: bool default: false
--abort_on_stack_overflow (Abort program when stack overflow (as opposed to throwing RangeError). This is useful for fuzzing where the spec behaviour would introduce nondeterminism.)
type: bool default: false
--randomize_hashes (randomize hashes to avoid predictable hash collisions (with snapshots this option cannot override the baked-in seed))
type: bool default: true
--hash_seed (Fixed seed to use to hash property keys (0 means random)(with snapshots this option cannot override the baked-in seed))
type: int default: 0
--random_seed (Default seed for initializing random generator (0, the default, means to use system random).)
type: int default: 0
--trace_rail (trace RAIL mode)
type: bool default: false
--print_all_exceptions (print exception object and stack trace on each thrown exception)
type: bool default: false
--runtime_call_stats (report runtime call counts and times)
type: bool default: false
--runtime_stats (internal usage only for controlling runtime statistics)
type: int default: 0
--profile_deserialization (Print the time it takes to deserialize the snapshot.)
type: bool default: false
--serialization_statistics (Collect statistics on serialized objects.)
type: bool default: false
--regexp_optimization (generate optimized regexp code)
type: bool default: true
--testing_bool_flag (testing_bool_flag)
type: bool default: true
--testing_maybe_bool_flag (testing_maybe_bool_flag)
type: maybe_bool default: unset
--testing_int_flag (testing_int_flag)
type: int default: 13
--testing_float_flag (float-flag)
type: float default: 2.5
--testing_string_flag (string-flag)
type: string default: Hello, world!
--testing_prng_seed (Seed used for threading test randomness)
type: int default: 42
--startup_src (Write V8 startup as C++ src. (mksnapshot only))
type: string default: NULL
--startup_blob (Write V8 startup blob file. (mksnapshot only))
type: string default: NULL
--profile_hydrogen_code_stub_compilation (Print the time it takes to lazily compile hydrogen code stubs.)
type: bool default: false
--help (Print usage message, including flags, on console)
type: bool default: true
--dump_counters (Dump counters on exit)
type: bool default: false
--dump_counters_nvp (Dump counters as name-value pairs on exit)
type: bool default: false
--map_counters (Map counters to a file)
type: string default:
--js_arguments (Pass all remaining arguments to the script. Alias for "--".)
type: arguments default:
--log (Minimal logging (no API, code, GC, suspect, or handles samples).)
type: bool default: false
--log_all (Log all events to the log file.)
type: bool default: false
--log_api (Log API events to the log file.)
type: bool default: false
--log_code (Log code events to the log file without profiling.)
type: bool default: false
--log_gc (Log heap samples on garbage collection for the hp2ps tool.)
type: bool default: false
--log_handles (Log global handle events.)
type: bool default: false
--log_suspect (Log suspect operations.)
type: bool default: false
--prof (Log statistical profiling information (implies --log-code).)
type: bool default: false
--prof_cpp (Like --prof, but ignore generated code.)
type: bool default: false
--prof_browser_mode (Used with --prof, turns on browser-compatible mode for profiling.)
type: bool default: true
--logfile (Specify the name of the log file.)
type: string default: v8.log
--logfile_per_isolate (Separate log files for each isolate.)
type: bool default: true
--ll_prof (Enable low-level linux profiler.)
type: bool default: false
--perf_basic_prof (Enable perf linux profiler (basic support).)
type: bool default: false
--perf_basic_prof_only_functions (Only report function code ranges to perf (i.e. no stubs).)
type: bool default: false
--perf_prof (Enable perf linux profiler (experimental annotate support).)
type: bool default: false
--perf_prof_unwinding_info (Enable unwinding info for perf linux profiler (experimental).)
type: bool default: false
--gc_fake_mmap (Specify the name of the file for fake gc mmap used in ll_prof)
type: string default: /tmp/__v8_gc__
--log_internal_timer_events (Time internal events.)
type: bool default: false
--log_timer_events (Time events including external callbacks.)
type: bool default: false
--log_instruction_stats (Log AArch64 instruction statistics.)
type: bool default: false
--log_instruction_file (AArch64 instruction statistics log file.)
type: string default: arm64_inst.csv
--log_instruction_period (AArch64 instruction statistics logging period.)
type: int default: 4194304
--redirect_code_traces (output deopt information and disassembly into file code-<pid>-<isolate id>.asm)
type: bool default: false
--redirect_code_traces_to (output deopt information and disassembly into the given file)
type: string default: NULL
--hydrogen_track_positions (track source code positions when building IR)
type: bool default: false
--print_opt_source (print source code of optimized and inlined functions)
type: bool default: false
--trace_elements_transitions (trace elements transitions)
type: bool default: false
--trace_creation_allocation_sites (trace the creation of allocation sites)
type: bool default: false
--print_code_stubs (print code stubs)
type: bool default: false
--test_secondary_stub_cache (test secondary stub cache by disabling the primary one)
type: bool default: false
--test_primary_stub_cache (test primary stub cache by disabling the secondary one)
type: bool default: false
--test_small_max_function_context_stub_size (enable testing the function context size overflow path by making the maximum size smaller)
type: bool default: false
--print_code (print generated code)
type: bool default: false
--print_opt_code (print optimized code)
type: bool default: false
--print_opt_code_filter (filter for printing optimized code)
type: string default: *
--print_unopt_code (print unoptimized code before printing optimized code based on it)
type: bool default: false
--print_code_verbose (print more information for code)
type: bool default: false
--print_builtin_code (print generated code for builtins)
type: bool default: false
--sodium (print generated code output suitable for use with the Sodium code viewer)
type: bool default: false
--print_all_code (enable all flags related to printing code)
type: bool default: false
--predictable (enable predictable mode)
type: bool default: false
--single_threaded (disable the use of background tasks)
type: bool default: false
@ayovev

This comment has been minimized.

Copy link

ayovev commented Aug 4, 2018

Thank you for this!

@juneyoung

This comment has been minimized.

Copy link

juneyoung commented Sep 11, 2018

Thanks for the summary!

@Xotabu4

This comment has been minimized.

Copy link

Xotabu4 commented Feb 9, 2019

node --version
v10.13.0
node --v8-options
SSE3=1 SSSE3=1 SSE4_1=1 SAHF=1 AVX=1 FMA3=1 BMI1=1 BMI2=1 LZCNT=1 POPCNT=1 ATOM=0
Synopsis:
  shell [options] [--shell] [<file>...]
  d8 [options] [-e <string>] [--shell] [[--module] <file>...]

  -e        execute a string in V8
  --shell   run an interactive JavaScript shell
  --module  execute a file as a JavaScript module

Options:
  --experimental-extras (enable code compiled in via v8_experimental_extra_library_files)
        type: bool  default: false
  --use-strict (enforce strict mode)
        type: bool  default: false
  --es-staging (enable test-worthy harmony features (for internal use only))
        type: bool  default: false
  --harmony (enable all completed harmony features)
        type: bool  default: false
  --harmony-shipping (enable all shipped harmony features)
        type: bool  default: true
  --harmony-do-expressions (enable "harmony do-expressions" (in progress))
        type: bool  default: false
  --harmony-class-fields (enable "harmony fields in class literals" (in progress))
        type: bool  default: false
  --harmony-static-fields (enable "harmony static fields in class literals" (in progress))
        type: bool  default: false
  --harmony-array-flatten (enable "harmony Array.prototype.flat{ten,Map}" (in progress))
        type: bool  default: false
  --harmony-locale (enable "Intl.Locale" (in progress))
        type: bool  default: false
  --harmony-public-fields (enable "harmony public fields in class literals")
        type: bool  default: false
  --harmony-private-fields (enable "harmony private fields in class literals")
        type: bool  default: false
  --harmony-numeric-separator (enable "harmony numeric separator between digits")
        type: bool  default: false
  --harmony-string-matchall (enable "harmony String.prototype.matchAll")
        type: bool  default: false
  --harmony-string-trimming (enable "harmony String.prototype.trim{Start,End}")
        type: bool  default: true
  --harmony-sharedarraybuffer (enable "harmony sharedarraybuffer")
        type: bool  default: true
  --harmony-regexp-named-captures (enable "harmony regexp named captures")
        type: bool  default: true
  --harmony-regexp-property (enable "harmony Unicode regexp property classes")
        type: bool  default: true
  --harmony-function-tostring (enable "harmony Function.prototype.toString")
        type: bool  default: true
  --harmony-promise-finally (enable "harmony Promise.prototype.finally")
        type: bool  default: true
  --harmony-optional-catch-binding (enable "allow omitting binding in catch blocks")
        type: bool  default: true
  --harmony-import-meta (enable "harmony import.meta property")
        type: bool  default: true
  --harmony-bigint (enable "harmony arbitrary precision integers")
        type: bool  default: true
  --harmony-dynamic-import (enable "harmony dynamic import")
        type: bool  default: true
  --harmony-array-prototype-values (enable "harmony Array.prototype.values")
        type: bool  default: true
  --icu-timezone-data (get information about timezones from ICU)
        type: bool  default: true
  --future (Implies all staged features that we want to ship in the not-too-far future)
        type: bool  default: false
  --allocation-site-pretenuring (pretenure with allocation sites)
        type: bool  default: true
  --page-promotion (promote pages based on utilization)
        type: bool  default: true
  --page-promotion-threshold (min percentage of live bytes on a page to enable fast evacuation)
        type: int  default: 70
  --trace-pretenuring (trace pretenuring decisions of HAllocate instructions)
        type: bool  default: false
  --trace-pretenuring-statistics (trace allocation site pretenuring statistics)
        type: bool  default: false
  --track-fields (track fields with only smi values)
        type: bool  default: true
  --track-double-fields (track fields with double values)
        type: bool  default: true
  --track-heap-object-fields (track fields with heap values)
        type: bool  default: true
  --track-computed-fields (track computed boilerplate fields)
        type: bool  default: true
  --track-field-types (track field types)
        type: bool  default: true
  --trace-block-coverage (trace collected block coverage information)
        type: bool  default: false
  --feedback-normalization (feed back normalization to constructors)
        type: bool  default: false
  --optimize-for-size (Enables optimizations which favor memory size over execution speed)
        type: bool  default: false
  --unbox-double-arrays (automatically unbox arrays of doubles)
        type: bool  default: true
  --interrupt-budget (interrupt budget which should be used for the profiler counter)
        type: int  default: 147456
  --ignition-elide-noneffectful-bytecodes (elide bytecodes which won't have any external effect)
        type: bool  default: true
  --ignition-reo (use ignition register equivalence optimizer)
        type: bool  default: true
  --ignition-filter-expression-positions (filter expression positions before the bytecode pipeline)
        type: bool  default: true
  --ignition-share-named-property-feedback (share feedback slots when loading the same named property from the same object)
        type: bool  default: false
  --print-bytecode (print bytecode generated by ignition interpreter)
        type: bool  default: false
  --print-bytecode-filter (filter for selecting which functions to print bytecode)
        type: string  default: *
  --trace-ignition-codegen (trace the codegen of ignition interpreter bytecode handlers)
        type: bool  default: false
  --trace-ignition-dispatches (traces the dispatches to bytecode handlers by the ignition interpreter)
        type: bool  default: false
  --trace-ignition-dispatches-output-file (the file to which the bytecode handler dispatch table is written (by default, the table is not written to a file))
        type: string  default: nullptr
  --fast-math (faster (but maybe less accurate) math functions)
        type: bool  default: true
  --trace-track-allocation-sites (trace the tracking of allocation sites)
        type: bool  default: false
  --trace-migration (trace object migration)
        type: bool  default: false
  --trace-generalization (trace map generalization)
        type: bool  default: false
  --concurrent-recompilation (optimizing hot functions asynchronously on a separate thread)
        type: bool  default: true
  --trace-concurrent-recompilation (track concurrent recompilation)
        type: bool  default: false
  --concurrent-recompilation-queue-length (the length of the concurrent compilation queue)
        type: int  default: 8
  --concurrent-recompilation-delay (artificial compilation delay in ms)
        type: int  default: 0
  --block-concurrent-recompilation (block queued jobs until released)
        type: bool  default: false
  --stress-runs (number of stress runs)
        type: int  default: 0
  --deopt-every-n-times (deoptimize every n times a deopt point is passed)
        type: int  default: 0
  --print-deopt-stress (print number of possible deopt points)
        type: bool  default: false
  --turbo-sp-frame-access (use stack pointer-relative access to frame wherever possible)
        type: bool  default: false
  --turbo-preprocess-ranges (run pre-register allocation heuristics)
        type: bool  default: true
  --turbo-filter (optimization filter for TurboFan compiler)
        type: string  default: *
  --trace-turbo (trace generated TurboFan IR)
        type: bool  default: false
  --trace-turbo-path (directory to dump generated TurboFan IR to)
        type: string  default: nullptr
  --trace-turbo-filter (filter for tracing turbofan compilation)
        type: string  default: *
  --trace-turbo-graph (trace generated TurboFan graphs)
        type: bool  default: false
  --trace-turbo-scheduled (trace TurboFan IR with schedule)
        type: bool  default: false
  --trace-turbo-cfg-file (trace turbo cfg graph (for C1 visualizer) to a given file name)
        type: string  default: nullptr
  --trace-turbo-types (trace TurboFan's types)
        type: bool  default: true
  --trace-turbo-scheduler (trace TurboFan's scheduler)
        type: bool  default: false
  --trace-turbo-reduction (trace TurboFan's various reducers)
        type: bool  default: false
  --trace-turbo-trimming (trace TurboFan's graph trimmer)
        type: bool  default: false
  --trace-turbo-jt (trace TurboFan's jump threading)
        type: bool  default: false
  --trace-turbo-ceq (trace TurboFan's control equivalence)
        type: bool  default: false
  --trace-turbo-loop (trace TurboFan's loop optimizations)
        type: bool  default: false
  --trace-alloc (trace register allocator)
        type: bool  default: false
  --trace-all-uses (trace all use positions)
        type: bool  default: false
  --trace-representation (trace representation types)
        type: bool  default: false
  --turbo-verify (verify TurboFan graphs at each phase)
        type: bool  default: false
  --turbo-verify-machine-graph (verify TurboFan machine graph before instruction selection)
        type: string  default: nullptr
  --trace-verify-csa (trace code stubs verification)
        type: bool  default: false
  --csa-trap-on-node (trigger break point when a node with given id is created in given stub. The format is: StubName,NodeId)
        type: string  default: nullptr
  --turbo-stats (print TurboFan statistics)
        type: bool  default: false
  --turbo-stats-nvp (print TurboFan statistics in machine-readable format)
        type: bool  default: false
  --turbo-splitting (split nodes during scheduling in TurboFan)
        type: bool  default: true
  --function-context-specialization (enable function context specialization in TurboFan)
        type: bool  default: false
  --turbo-inlining (enable inlining in TurboFan)
        type: bool  default: true
  --max-inlined-bytecode-size (maximum size of bytecode for a single inlining)
        type: int  default: 500
  --max-inlined-bytecode-size-cumulative (maximum cumulative size of bytecode considered for inlining)
        type: int  default: 1000
  --max-inlined-bytecode-size-absolute (maximum cumulative size of bytecode considered for inlining)
        type: int  default: 5000
  --reserve-inline-budget-scale-factor (maximum cumulative size of bytecode considered for inlining)
        type: float  default: 1.2
  --max-inlined-bytecode-size-small (maximum size of bytecode considered for small function inlining)
        type: int  default: 30
  --min-inlining-frequency (minimum frequency for inlining)
        type: float  default: 0.15
  --polymorphic-inlining (polymorphic inlining)
        type: bool  default: true
  --stress-inline (set high thresholds for inlining to inline as much as possible)
        type: bool  default: false
  --trace-turbo-inlining (trace TurboFan inlining)
        type: bool  default: false
  --inline-accessors (inline JavaScript accessors)
        type: bool  default: true
  --inline-into-try (inline into try blocks)
        type: bool  default: true
  --turbo-inline-array-builtins (inline array builtins in TurboFan code)
        type: bool  default: true
  --use-osr (use on-stack replacement)
        type: bool  default: true
  --trace-osr (trace on-stack replacement)
        type: bool  default: false
  --analyze-environment-liveness (analyze liveness of environment slots and zap dead values)
        type: bool  default: true
  --trace-environment-liveness (trace liveness of local variable slots)
        type: bool  default: false
  --turbo-load-elimination (enable load elimination in TurboFan)
        type: bool  default: true
  --trace-turbo-load-elimination (trace TurboFan load elimination)
        type: bool  default: false
  --turbo-profiling (enable profiling in TurboFan)
        type: bool  default: false
  --turbo-verify-allocation (verify register allocation in TurboFan)
        type: bool  default: false
  --turbo-move-optimization (optimize gap moves in TurboFan)
        type: bool  default: true
  --turbo-jt (enable jump threading in TurboFan)
        type: bool  default: true
  --turbo-loop-peeling (Turbofan loop peeling)
        type: bool  default: true
  --turbo-loop-variable (Turbofan loop variable optimization)
        type: bool  default: true
  --turbo-cf-optimization (optimize control flow in TurboFan)
        type: bool  default: true
  --turbo-escape (enable escape analysis)
        type: bool  default: true
  --turbo-allocation-folding (Turbofan allocation folding)
        type: bool  default: true
  --turbo-instruction-scheduling (enable instruction scheduling in TurboFan)
        type: bool  default: false
  --turbo-stress-instruction-scheduling (randomly schedule instructions to stress dependency tracking)
        type: bool  default: false
  --turbo-store-elimination (enable store-store elimination in TurboFan)
        type: bool  default: true
  --trace-store-elimination (trace store elimination)
        type: bool  default: false
  --turbo-rewrite-far-jumps (rewrite far to near jumps (ia32,x64))
        type: bool  default: true
  --experimental-inline-promise-constructor (inline the Promise constructor in TurboFan)
        type: bool  default: true
  --untrusted-code-mitigations (Enable mitigations for executing untrusted code)
        type: bool  default: false
  --branch-load-poisoning (Mask loads with branch conditions.)
        type: bool  default: false
  --minimal (simplifies execution model to make porting easier (e.g. always use Ignition, never optimize))
        type: bool  default: false
  --expose-wasm (expose wasm interface to JavaScript)
        type: bool  default: true
  --assume-asmjs-origin (force wasm decoder to assume input is internal asm-wasm format)
        type: bool  default: false
  --wasm-disable-structured-cloning (disable wasm structured cloning)
        type: bool  default: false
  --wasm-num-compilation-tasks (number of parallel compilation tasks for wasm)
        type: int  default: 10
  --wasm-write-protect-code-memory (write protect code memory on the wasm native heap)
        type: bool  default: false
  --wasm-trace-serialization (trace serialization/deserialization)
        type: bool  default: false
  --wasm-async-compilation (enable actual asynchronous compilation for WebAssembly.compile)
        type: bool  default: true
  --wasm-test-streaming (use streaming compilation instead of async compilation for tests)
        type: bool  default: false
  --wasm-max-mem-pages (maximum memory size of a wasm instance)
        type: uint  default: 32767
  --wasm-max-table-size (maximum table size of a wasm instance)
        type: uint  default: 10000000
  --wasm-tier-up (enable basic tiering up to the optimizing compiler)
        type: bool  default: false
  --trace-wasm-ast-start (start function for wasm AST trace (inclusive))
        type: int  default: 0
  --trace-wasm-ast-end (end function for wasm AST trace (exclusive))
        type: int  default: 0
  --liftoff (enable liftoff, the experimental wasm baseline compiler)
        type: bool  default: false
  --skip-compiling-wasm-funcs (start compiling at function N)
        type: uint  default: 0
  --wasm-trace-memory (print all memory updates performed in wasm code)
        type: bool  default: false
  --validate-asm (validate asm.js modules before compiling)
        type: bool  default: true
  --suppress-asm-messages (don't emit asm.js related messages (for golden file testing))
        type: bool  default: false
  --trace-asm-time (log asm.js timing info to the console)
        type: bool  default: false
  --trace-asm-scanner (log tokens encountered by asm.js scanner)
        type: bool  default: false
  --trace-asm-parser (verbose logging of asm.js parse failures)
        type: bool  default: false
  --stress-validate-asm (try to validate everything as asm.js)
        type: bool  default: false
  --dump-wasm-module-path (directory to dump wasm modules to)
        type: string  default: nullptr
  --experimental-wasm-simd (enable prototype simd opcodes for wasm)
        type: bool  default: false
  --experimental-wasm-eh (enable prototype exception handling opcodes for wasm)
        type: bool  default: false
  --experimental-wasm-mv (enable prototype multi-value support for wasm)
        type: bool  default: false
  --experimental-wasm-threads (enable prototype threads for wasm)
        type: bool  default: false
  --experimental-wasm-sat-f2i-conversions (enable non-trapping float-to-int conversions for wasm)
        type: bool  default: false
  --experimental-wasm-se (enable prototype sign extension opcodes for wasm)
        type: bool  default: false
  --experimental-wasm-anyref (enable prototype anyref support for wasm)
        type: bool  default: false
  --experimental-wasm-mut-global (enable prototype import/export mutable global support for wasm)
        type: bool  default: false
  --wasm-opt (enable wasm optimization)
        type: bool  default: false
  --wasm-no-bounds-checks (disable bounds checks (performance testing only))
        type: bool  default: false
  --wasm-no-stack-checks (disable stack checks (performance testing only))
        type: bool  default: false
  --wasm-trap-handler (use signal handlers to catch out of bounds memory access in wasm (currently Linux x86_64 only))
        type: bool  default: true
  --wasm-fuzzer-gen-test (Generate a test case when running a wasm fuzzer)
        type: bool  default: false
  --print-wasm-code (Print WebAssembly code)
        type: bool  default: false
  --wasm-interpret-all (Execute all wasm code in the wasm interpreter)
        type: bool  default: false
  --asm-wasm-lazy-compilation (enable lazy compilation for asm-wasm modules)
        type: bool  default: false
  --wasm-lazy-compilation (enable lazy compilation for all wasm modules)
        type: bool  default: false
  --frame-count (number of stack frames inspected by the profiler)
        type: int  default: 1
  --type-info-threshold (percentage of ICs that must have type info to allow optimization)
        type: int  default: 25
  --stress-sampling-allocation-profiler (Enables sampling allocation profiler with X as a sample interval)
        type: int  default: 0
  --min-semi-space-size (min size of a semi-space (in MBytes), the new space consists of two semi-spaces)
        type: size_t  default: 0
  --max-semi-space-size (max size of a semi-space (in MBytes), the new space consists of two semi-spaces)
        type: size_t  default: 0
  --semi-space-growth-factor (factor by which to grow the new space)
        type: int  default: 2
  --experimental-new-space-growth-heuristic (Grow the new space based on the percentage of survivors instead of their absolute value.)
        type: bool  default: false
  --max-old-space-size (max size of the old space (in Mbytes))
        type: size_t  default: 0
  --initial-old-space-size (initial old space size (in Mbytes))
        type: size_t  default: 0
  --gc-global (always perform global GCs)
        type: bool  default: false
  --random-gc-interval (Collect garbage after random(0, X) allocations. It overrides gc_interval.)
        type: int  default: 0
  --gc-interval (garbage collect after <n> allocations)
        type: int  default: -1
  --retain-maps-for-n-gc (keeps maps alive for <n> old space garbage collections)
        type: int  default: 2
  --trace-gc (print one trace line following each garbage collection)
        type: bool  default: false
  --trace-gc-nvp (print one detailed trace line in name=value format after each garbage collection)
        type: bool  default: false
  --trace-gc-ignore-scavenger (do not print trace line after scavenger collection)
        type: bool  default: false
  --trace-idle-notification (print one trace line following each idle notification)
        type: bool  default: false
  --trace-idle-notification-verbose (prints the heap state used by the idle notification)
        type: bool  default: false
  --trace-gc-verbose (print more details following each garbage collection)
        type: bool  default: false
  --trace-allocation-stack-interval (print stack trace after <n> free-list allocations)
        type: int  default: -1
  --trace-duplicate-threshold-kb (print duplicate objects in the heap if their size is more than given threshold)
        type: int  default: 0
  --trace-fragmentation (report fragmentation for old space)
        type: bool  default: false
  --trace-fragmentation-verbose (report fragmentation for old space (detailed))
        type: bool  default: false
  --trace-evacuation (report evacuation statistics)
        type: bool  default: false
  --trace-mutator-utilization (print mutator utilization, allocation speed, gc speed)
        type: bool  default: false
  --incremental-marking (use incremental marking)
        type: bool  default: true
  --incremental-marking-wrappers (use incremental marking for marking wrappers)
        type: bool  default: true
  --trace-unmapper (Trace the unmapping)
        type: bool  default: false
  --parallel-scavenge (parallel scavenge)
        type: bool  default: true
  --trace-parallel-scavenge (trace parallel scavenge)
        type: bool  default: false
  --write-protect-code-memory (write protect code memory)
        type: bool  default: true
  --concurrent-marking (use concurrent marking)
        type: bool  default: true
  --parallel-marking (use parallel marking in atomic pause)
        type: bool  default: true
  --trace-concurrent-marking (trace concurrent marking)
        type: bool  default: false
  --black-allocation (use black allocation)
        type: bool  default: true
  --concurrent-store-buffer (use concurrent store buffer processing)
        type: bool  default: true
  --concurrent-sweeping (use concurrent sweeping)
        type: bool  default: true
  --parallel-compaction (use parallel compaction)
        type: bool  default: true
  --parallel-pointer-update (use parallel pointer update during compaction)
        type: bool  default: true
  --detect-ineffective-gcs-near-heap-limit (trigger out-of-memory failure to avoid GC storm near heap limit)
        type: bool  default: true
  --trace-incremental-marking (trace progress of the incremental marking)
        type: bool  default: false
  --trace-stress-marking (trace stress marking progress)
        type: bool  default: false
  --trace-stress-scavenge (trace stress scavenge progress)
        type: bool  default: false
  --track-gc-object-stats (track object counts and memory usage)
        type: bool  default: false
  --trace-gc-object-stats (trace object counts and memory usage)
        type: bool  default: false
  --trace-zone-stats (trace zone memory usage)
        type: bool  default: false
  --track-retaining-path (enable support for tracking retaining path)
        type: bool  default: false
  --concurrent-array-buffer-freeing (free array buffer allocations on a background thread)
        type: bool  default: true
  --gc-stats (Used by tracing internally to enable gc statistics)
        type: int  default: 0
  --track-detached-contexts (track native contexts that are expected to be garbage collected)
        type: bool  default: true
  --trace-detached-contexts (trace native contexts that are expected to be garbage collected)
        type: bool  default: false
  --move-object-start (enable moving of object starts)
        type: bool  default: true
  --memory-reducer (use memory reducer)
        type: bool  default: true
  --heap-growing-percent (specifies heap growing factor as (1 + heap_growing_percent/100))
        type: int  default: 0
  --v8-os-page-size (override OS page size (in KBytes))
        type: int  default: 0
  --always-compact (Perform compaction on every full GC)
        type: bool  default: false
  --never-compact (Never perform compaction on full GC - testing only)
        type: bool  default: false
  --compact-code-space (Compact code space on full collections)
        type: bool  default: true
  --use-marking-progress-bar (Use a progress bar to scan large objects in increments when incremental marking is active.)
        type: bool  default: true
  --force-marking-deque-overflows (force overflows of marking deque by reducing it's size to 64 words)
        type: bool  default: false
  --stress-compaction (stress the GC compactor to flush out bugs (implies --force_marking_deque_overflows))
        type: bool  default: false
  --stress-compaction-random (Stress GC compaction by selecting random percent of pages as evacuation candidates. It overrides stress_compaction.)
        type: bool  default: false
  --stress-incremental-marking (force incremental marking for small heaps and run it more often)
        type: bool  default: false
  --fuzzer-gc-analysis (prints number of allocations and enables analysis mode for gc fuzz testing, e.g. --stress-marking, --stress-scavenge)
        type: bool  default: false
  --stress-marking (force marking at random points between 0 and X (inclusive) percent of the regular marking start limit)
        type: int  default: 0
  --stress-scavenge (force scavenge at random points between 0 and X (inclusive) percent of the new space capacity)
        type: int  default: 0
  --disable-abortjs (disables AbortJS runtime function)
        type: bool  default: false
  --manual-evacuation-candidates-selection (Test mode only flag. It allows an unit test to select evacuation candidates pages (requires --stress_compaction).)
        type: bool  default: false
  --fast-promotion-new-space (fast promote new space on high survival rates)
        type: bool  default: false
  --debug-code (generate extra code (assertions) for debugging)
        type: bool  default: false
  --code-comments (emit comments in code disassembly; for more readable source positions you should add --no-concurrent_recompilation)
        type: bool  default: false
  --enable-sse3 (enable use of SSE3 instructions if available)
        type: bool  default: true
  --enable-ssse3 (enable use of SSSE3 instructions if available)
        type: bool  default: true
  --enable-sse4-1 (enable use of SSE4.1 instructions if available)
        type: bool  default: true
  --enable-sahf (enable use of SAHF instruction if available (X64 only))
        type: bool  default: true
  --enable-avx (enable use of AVX instructions if available)
        type: bool  default: true
  --enable-fma3 (enable use of FMA3 instructions if available)
        type: bool  default: true
  --enable-bmi1 (enable use of BMI1 instructions if available)
        type: bool  default: true
  --enable-bmi2 (enable use of BMI2 instructions if available)
        type: bool  default: true
  --enable-lzcnt (enable use of LZCNT instruction if available)
        type: bool  default: true
  --enable-popcnt (enable use of POPCNT instruction if available)
        type: bool  default: true
  --arm-arch (generate instructions for the selected ARM architecture if available: armv6, armv7, armv7+sudiv or armv8)
        type: string  default: armv8
  --enable-vldr-imm (enable use of constant pools for double immediate (ARM only))
        type: bool  default: false
  --force-long-branches (force all emitted branches to be in long mode (MIPS/PPC only))
        type: bool  default: false
  --mcpu (enable optimization for specific cpu)
        type: string  default: auto
  --enable-armv7 (deprecated (use --arm_arch instead))
        type: maybe_bool  default: unset
  --enable-vfp3 (deprecated (use --arm_arch instead))
        type: maybe_bool  default: unset
  --enable-32dregs (deprecated (use --arm_arch instead))
        type: maybe_bool  default: unset
  --enable-neon (deprecated (use --arm_arch instead))
        type: maybe_bool  default: unset
  --enable-sudiv (deprecated (use --arm_arch instead))
        type: maybe_bool  default: unset
  --enable-armv8 (deprecated (use --arm_arch instead))
        type: maybe_bool  default: unset
  --enable-regexp-unaligned-accesses (enable unaligned accesses for the regexp engine)
        type: bool  default: true
  --script-streaming (enable parsing on background)
        type: bool  default: true
  --disable-old-api-accessors (Disable old-style API accessors whose setters trigger through the prototype chain)
        type: bool  default: false
  --expose-natives-as (expose natives in global object)
        type: string  default: nullptr
  --expose-free-buffer (expose freeBuffer extension)
        type: bool  default: false
  --expose-gc (expose gc extension)
        type: bool  default: false
  --expose-gc-as (expose gc extension under the specified name)
        type: string  default: nullptr
  --expose-externalize-string (expose externalize string extension)
        type: bool  default: false
  --expose-trigger-failure (expose trigger-failure extension)
        type: bool  default: false
  --stack-trace-limit (number of stack frames to capture)
        type: int  default: 10
  --builtins-in-stack-traces (show built-in functions in stack traces)
        type: bool  default: false
  --enable-experimental-builtins (enable new csa-based experimental builtins)
        type: bool  default: false
  --disallow-code-generation-from-strings (disallow eval and friends)
        type: bool  default: false
  --allow-unsafe-function-constructor (allow invoking the function constructor without security checks)
        type: bool  default: false
  --force-slow-path (always take the slow path for builtins)
        type: bool  default: false
  --inline-new (use fast inline allocation)
        type: bool  default: true
  --trace (trace function calls)
        type: bool  default: false
  --lazy (use lazy compilation)
        type: bool  default: true
  --trace-opt (trace lazy optimization)
        type: bool  default: false
  --trace-opt-verbose (extra verbose compilation tracing)
        type: bool  default: false
  --trace-opt-stats (trace lazy optimization statistics)
        type: bool  default: false
  --trace-deopt (trace optimize function deoptimization)
        type: bool  default: false
  --trace-file-names (include file names in trace-opt/trace-deopt output)
        type: bool  default: false
  --trace-interrupts (trace interrupts when they are handled)
        type: bool  default: false
  --opt (use adaptive optimizations)
        type: bool  default: true
  --always-opt (always try to optimize functions)
        type: bool  default: false
  --always-osr (always try to OSR functions)
        type: bool  default: false
  --prepare-always-opt (prepare for turning on always opt)
        type: bool  default: false
  --trace-serializer (print code serializer trace)
        type: bool  default: false
  --compilation-cache (enable compilation cache)
        type: bool  default: true
  --cache-prototype-transitions (cache prototype transitions)
        type: bool  default: true
  --compiler-dispatcher (enable compiler dispatcher)
        type: bool  default: false
  --trace-compiler-dispatcher (trace compiler dispatcher activity)
        type: bool  default: false
  --trace-compiler-dispatcher-jobs (trace progress of individual jobs managed by the compiler dispatcher)
        type: bool  default: false
  --cpu-profiler-sampling-interval (CPU profiler sampling interval in microseconds)
        type: int  default: 1000
  --trace-js-array-abuse (trace out-of-bounds accesses to JS arrays)
        type: bool  default: false
  --trace-external-array-abuse (trace out-of-bounds-accesses to external arrays)
        type: bool  default: false
  --trace-array-abuse (trace out-of-bounds accesses to all arrays)
        type: bool  default: false
  --enable-liveedit (enable liveedit experimental feature)
        type: bool  default: true
  --trace-side-effect-free-debug-evaluate (print debug messages for side-effect-free debug-evaluate for testing)
        type: bool  default: false
  --hard-abort (abort by crashing)
        type: bool  default: true
  --expose-inspector-scripts (expose injected-script-source.js for debugging)
        type: bool  default: false
  --stack-size (default size of stack region v8 is allowed to use (in kBytes))
        type: int  default: 984
  --max-stack-trace-source-length (maximum length of function source code printed in a stack trace.)
        type: int  default: 300
  --clear-exceptions-on-js-entry (clear pending exceptions when entering JavaScript)
        type: bool  default: false
  --histogram-interval (time interval in ms for aggregating memory histograms)
        type: int  default: 600000
  --heap-profiler-trace-objects (Dump heap object allocations/movements/size_updates)
        type: bool  default: false
  --heap-profiler-use-embedder-graph (Use the new EmbedderGraph API to get embedder nodes)
        type: bool  default: true
  --heap-snapshot-string-limit (truncate strings to this length in the heap snapshot)
        type: int  default: 1024
  --sampling-heap-profiler-suppress-randomness (Use constant sample intervals to eliminate test flakiness)
        type: bool  default: false
  --use-idle-notification (Use idle notification to reduce memory footprint.)
        type: bool  default: true
  --use-ic (use inline caching)
        type: bool  default: true
  --trace-ic (trace inline cache state transitions for tools/ic-processor)
        type: bool  default: false
  --ic-stats (inline cache state transitions statistics)
        type: int  default: 0
  --native-code-counters (generate extra code for manipulating stats counters)
        type: bool  default: false
  --thin-strings (Enable ThinString support)
        type: bool  default: true
  --trace-prototype-users (Trace updates to prototype user tracking)
        type: bool  default: false
  --use-verbose-printer (allows verbose printing)
        type: bool  default: true
  --trace-for-in-enumerate (Trace for-in enumerate slow-paths)
        type: bool  default: false
  --trace-maps (trace map creation)
        type: bool  default: false
  --trace-maps-details (also log map details)
        type: bool  default: true
  --allow-natives-syntax (allow natives syntax)
        type: bool  default: false
  --lazy-inner-functions (enable lazy parsing inner functions)
        type: bool  default: true
  --aggressive-lazy-inner-functions (even lazier inner function parsing)
        type: bool  default: false
  --preparser-scope-analysis (perform scope analysis for preparsed inner functions)
        type: bool  default: true
  --trace-sim (Trace simulator execution)
        type: bool  default: false
  --debug-sim (Enable debugging the simulator)
        type: bool  default: false
  --check-icache (Check icache flushes in ARM and MIPS simulator)
        type: bool  default: false
  --stop-sim-at (Simulator stop after x number of instructions)
        type: int  default: 0
  --sim-stack-alignment (Stack alingment in bytes in simulator (4 or 8, 8 is default))
        type: int  default: 8
  --sim-stack-size (Stack size of the ARM64, MIPS64 and PPC64 simulator in kBytes (default is 2 MB))
        type: int  default: 2048
  --log-colour (When logging, try to use coloured output.)
        type: bool  default: true
  --ignore-asm-unimplemented-break (Don't break for ASM_UNIMPLEMENTED_BREAK macros.)
        type: bool  default: false
  --trace-sim-messages (Trace simulator debug messages. Implied by --trace-sim.)
        type: bool  default: false
  --stack-trace-on-illegal (print stack trace when an illegal exception is thrown)
        type: bool  default: false
  --abort-on-uncaught-exception (abort program (dump core) when an uncaught exception is thrown)
        type: bool  default: false
  --abort-on-stack-or-string-length-overflow (Abort program when the stack overflows or a string exceeds maximum length (as opposed to throwing RangeError). This is useful for fuzzing where the spec behaviour would introduce nondeterminism.)
        type: bool  default: false
  --randomize-hashes (randomize hashes to avoid predictable hash collisions (with snapshots this option cannot override the baked-in seed))
        type: bool  default: true
  --rehash-snapshot (rehash strings from the snapshot to override the baked-in seed)
        type: bool  default: true
  --hash-seed (Fixed seed to use to hash property keys (0 means random)(with snapshots this option cannot override the baked-in seed))
        type: uint64  default: 0
  --random-seed (Default seed for initializing random generator (0, the default, means to use system random).)
        type: int  default: 0
  --fuzzer-random-seed (Default seed for initializing fuzzer random generator (0, the default, means to use v8's random number generator seed).)
        type: int  default: 0
  --trace-rail (trace RAIL mode)
        type: bool  default: false
  --print-all-exceptions (print exception object and stack trace on each thrown exception)
        type: bool  default: false
  --runtime-call-stats (report runtime call counts and times)
        type: bool  default: false
  --runtime-stats (internal usage only for controlling runtime statistics)
        type: int  default: 0
  --lazy-deserialization (Deserialize code lazily from the snapshot.)
        type: bool  default: true
  --lazy-handler-deserialization (Deserialize bytecode handlers lazily from the snapshot.)
        type: bool  default: true
  --trace-lazy-deserialization (Trace lazy deserialization.)
        type: bool  default: false
  --profile-deserialization (Print the time it takes to deserialize the snapshot.)
        type: bool  default: false
  --serialization-statistics (Collect statistics on serialized objects.)
        type: bool  default: false
  --regexp-optimization (generate optimized regexp code)
        type: bool  default: true
  --regexp-mode-modifiers (enable inline flags in regexp.)
        type: bool  default: false
  --testing-bool-flag (testing_bool_flag)
        type: bool  default: true
  --testing-maybe-bool-flag (testing_maybe_bool_flag)
        type: maybe_bool  default: unset
  --testing-int-flag (testing_int_flag)
        type: int  default: 13
  --testing-float-flag (float-flag)
        type: float  default: 2.5
  --testing-string-flag (string-flag)
        type: string  default: Hello, world!
  --testing-prng-seed (Seed used for threading test randomness)
        type: int  default: 42
  --embedded-src (Path for the generated embedded data file. (mksnapshot only))
        type: string  default: nullptr
  --embedded-variant (Label to disambiguate symbols in embedded data file. (mksnapshot only))
        type: string  default: nullptr
  --startup-src (Write V8 startup as C++ src. (mksnapshot only))
        type: string  default: nullptr
  --startup-blob (Write V8 startup blob file. (mksnapshot only))
        type: string  default: nullptr
  --help (Print usage message, including flags, on console)
        type: bool  default: true
  --dump-counters (Dump counters on exit)
        type: bool  default: false
  --dump-counters-nvp (Dump counters as name-value pairs on exit)
        type: bool  default: false
  --use-external-strings (Use external strings for source code)
        type: bool  default: false
  --map-counters (Map counters to a file)
        type: string  default: 
  --js-arguments (Pass all remaining arguments to the script. Alias for "--".)
        type: arguments  default: 
  --log (Minimal logging (no API, code, GC, suspect, or handles samples).)
        type: bool  default: false
  --log-all (Log all events to the log file.)
        type: bool  default: false
  --log-api (Log API events to the log file.)
        type: bool  default: false
  --log-code (Log code events to the log file without profiling.)
        type: bool  default: false
  --log-handles (Log global handle events.)
        type: bool  default: false
  --log-suspect (Log suspect operations.)
        type: bool  default: false
  --log-source-code (Log source code.)
        type: bool  default: false
  --log-function-events (Log function events (parse, compile, execute) separately.)
        type: bool  default: false
  --prof (Log statistical profiling information (implies --log-code).)
        type: bool  default: false
  --detailed-line-info (Always generate detailed line information for CPU profiling.)
        type: bool  default: true
  --prof-sampling-interval (Interval for --prof samples (in microseconds).)
        type: int  default: 1000
  --prof-cpp (Like --prof, but ignore generated code.)
        type: bool  default: false
  --prof-browser-mode (Used with --prof, turns on browser-compatible mode for profiling.)
        type: bool  default: true
  --logfile (Specify the name of the log file.)
        type: string  default: v8.log
  --logfile-per-isolate (Separate log files for each isolate.)
        type: bool  default: true
  --ll-prof (Enable low-level linux profiler.)
        type: bool  default: false
  --interpreted-frames-native-stack (Show interpreted frames on the native stack (useful for external profilers).)
        type: bool  default: false
  --perf-basic-prof (Enable perf linux profiler (basic support).)
        type: bool  default: false
  --perf-basic-prof-only-functions (Only report function code ranges to perf (i.e. no stubs).)
        type: bool  default: false
  --perf-prof (Enable perf linux profiler (experimental annotate support).)
        type: bool  default: false
  --perf-prof-unwinding-info (Enable unwinding info for perf linux profiler (experimental).)
        type: bool  default: false
  --gc-fake-mmap (Specify the name of the file for fake gc mmap used in ll_prof)
        type: string  default: /tmp/__v8_gc__
  --log-internal-timer-events (Time internal events.)
        type: bool  default: false
  --log-timer-events (Time events including external callbacks.)
        type: bool  default: false
  --log-instruction-stats (Log AArch64 instruction statistics.)
        type: bool  default: false
  --log-instruction-file (AArch64 instruction statistics log file.)
        type: string  default: arm64_inst.csv
  --log-instruction-period (AArch64 instruction statistics logging period.)
        type: int  default: 4194304
  --redirect-code-traces (output deopt information and disassembly into file code-<pid>-<isolate id>.asm)
        type: bool  default: false
  --redirect-code-traces-to (output deopt information and disassembly into the given file)
        type: string  default: nullptr
  --print-opt-source (print source code of optimized and inlined functions)
        type: bool  default: false
  --trace-elements-transitions (trace elements transitions)
        type: bool  default: false
  --trace-creation-allocation-sites (trace the creation of allocation sites)
        type: bool  default: false
  --print-code-stubs (print code stubs)
        type: bool  default: false
  --test-secondary-stub-cache (test secondary stub cache by disabling the primary one)
        type: bool  default: false
  --test-primary-stub-cache (test primary stub cache by disabling the secondary one)
        type: bool  default: false
  --test-small-max-function-context-stub-size (enable testing the function context size overflow path by making the maximum size smaller)
        type: bool  default: false
  --print-code (print generated code)
        type: bool  default: false
  --print-opt-code (print optimized code)
        type: bool  default: false
  --print-opt-code-filter (filter for printing optimized code)
        type: string  default: *
  --print-code-verbose (print more information for code)
        type: bool  default: false
  --print-builtin-code (print generated code for builtins)
        type: bool  default: false
  --print-builtin-size (print code size for builtins)
        type: bool  default: false
  --sodium (print generated code output suitable for use with the Sodium code viewer)
        type: bool  default: false
  --print-all-code (enable all flags related to printing code)
        type: bool  default: false
  --predictable (enable predictable mode)
        type: bool  default: false
  --single-threaded (disable the use of background tasks)
        type: bool  default: false
  --single-threaded-gc (disable the use of background gc tasks)
        type: bool  default: false
@fleksin

This comment has been minimized.

Copy link

fleksin commented Mar 6, 2019

--trace_hydrogen_xxx flags is not available in node 8+.
Is there an equivalent in node 8+?

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
You can’t perform that action at this time.