| // Copyright 2012 the V8 project authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // This file defines all of the flags. It is separated into different section, |
| // for Debug, Release, Logging and Profiling, etc. To add a new flag, find the |
| // correct section, and use one of the DEFINE_ macros, without a trailing ';'. |
| // |
| // This include does not have a guard, because it is a template-style include, |
| // which can be included multiple times in different modes. It expects to have |
| // a mode defined before it's included. The modes are FLAG_MODE_... below: |
| |
| #define DEFINE_IMPLICATION(whenflag, thenflag) \ |
| DEFINE_VALUE_IMPLICATION(whenflag, thenflag, true) |
| |
| #define DEFINE_NEG_IMPLICATION(whenflag, thenflag) \ |
| DEFINE_VALUE_IMPLICATION(whenflag, thenflag, false) |
| |
| #define DEFINE_NEG_NEG_IMPLICATION(whenflag, thenflag) \ |
| DEFINE_NEG_VALUE_IMPLICATION(whenflag, thenflag, false) |
| |
| // We want to declare the names of the variables for the header file. Normally |
| // this will just be an extern declaration, but for a readonly flag we let the |
| // compiler make better optimizations by giving it the value. |
| #if defined(FLAG_MODE_DECLARE) |
| #define FLAG_FULL(ftype, ctype, nam, def, cmt) \ |
| V8_EXPORT_PRIVATE extern ctype FLAG_##nam; |
| #define FLAG_READONLY(ftype, ctype, nam, def, cmt) \ |
| static ctype const FLAG_##nam = def; |
| |
| // We want to supply the actual storage and value for the flag variable in the |
| // .cc file. We only do this for writable flags. |
| #elif defined(FLAG_MODE_DEFINE) |
| #ifdef USING_V8_SHARED |
| #define FLAG_FULL(ftype, ctype, nam, def, cmt) \ |
| V8_EXPORT_PRIVATE extern ctype FLAG_##nam; |
| #else |
| #define FLAG_FULL(ftype, ctype, nam, def, cmt) \ |
| V8_EXPORT_PRIVATE ctype FLAG_##nam = def; |
| #endif |
| |
| // We need to define all of our default values so that the Flag structure can |
| // access them by pointer. These are just used internally inside of one .cc, |
| // for MODE_META, so there is no impact on the flags interface. |
| #elif defined(FLAG_MODE_DEFINE_DEFAULTS) |
| #define FLAG_FULL(ftype, ctype, nam, def, cmt) \ |
| static ctype const FLAGDEFAULT_##nam = def; |
| |
| // We want to write entries into our meta data table, for internal parsing and |
| // printing / etc in the flag parser code. We only do this for writable flags. |
| #elif defined(FLAG_MODE_META) |
| #define FLAG_FULL(ftype, ctype, nam, def, cmt) \ |
| { Flag::TYPE_##ftype, #nam, &FLAG_##nam, &FLAGDEFAULT_##nam, cmt, false } \ |
| , |
| #define FLAG_ALIAS(ftype, ctype, alias, nam) \ |
| { \ |
| Flag::TYPE_##ftype, #alias, &FLAG_##nam, &FLAGDEFAULT_##nam, \ |
| "alias for --" #nam, false \ |
| } \ |
| , |
| |
| // We produce the code to set flags when it is implied by another flag. |
| #elif defined(FLAG_MODE_DEFINE_IMPLICATIONS) |
| #define DEFINE_VALUE_IMPLICATION(whenflag, thenflag, value) \ |
| if (FLAG_##whenflag) FLAG_##thenflag = value; |
| |
| #define DEFINE_NEG_VALUE_IMPLICATION(whenflag, thenflag, value) \ |
| if (!FLAG_##whenflag) FLAG_##thenflag = value; |
| |
| #else |
| #error No mode supplied when including flags.defs |
| #endif |
| |
| // Dummy defines for modes where it is not relevant. |
| #ifndef FLAG_FULL |
| #define FLAG_FULL(ftype, ctype, nam, def, cmt) |
| #endif |
| |
| #ifndef FLAG_READONLY |
| #define FLAG_READONLY(ftype, ctype, nam, def, cmt) |
| #endif |
| |
| #ifndef FLAG_ALIAS |
| #define FLAG_ALIAS(ftype, ctype, alias, nam) |
| #endif |
| |
| #ifndef DEFINE_VALUE_IMPLICATION |
| #define DEFINE_VALUE_IMPLICATION(whenflag, thenflag, value) |
| #endif |
| |
| #ifndef DEFINE_NEG_VALUE_IMPLICATION |
| #define DEFINE_NEG_VALUE_IMPLICATION(whenflag, thenflag, value) |
| #endif |
| |
| #define COMMA , |
| |
| #ifdef FLAG_MODE_DECLARE |
| // Structure used to hold a collection of arguments to the JavaScript code. |
| struct JSArguments { |
| public: |
| inline const char*& operator[](int idx) const { return argv[idx]; } |
| static JSArguments Create(int argc, const char** argv) { |
| JSArguments args; |
| args.argc = argc; |
| args.argv = argv; |
| return args; |
| } |
| int argc; |
| const char** argv; |
| }; |
| |
| struct MaybeBoolFlag { |
| static MaybeBoolFlag Create(bool has_value, bool value) { |
| MaybeBoolFlag flag; |
| flag.has_value = has_value; |
| flag.value = value; |
| return flag; |
| } |
| bool has_value; |
| bool value; |
| }; |
| #endif |
| |
| #ifdef DEBUG |
| #define DEBUG_BOOL true |
| #else |
| #define DEBUG_BOOL false |
| #endif |
| |
| // Supported ARM configurations are: |
| // "armv6": ARMv6 + VFPv2 |
| // "armv7": ARMv7 + VFPv3-D32 + NEON |
| // "armv7+sudiv": ARMv7 + VFPv4-D32 + NEON + SUDIV |
| // "armv8": ARMv8 (including all of the above) |
| #if !defined(ARM_TEST_NO_FEATURE_PROBE) || \ |
| (defined(CAN_USE_ARMV8_INSTRUCTIONS) && \ |
| defined(CAN_USE_ARMV7_INSTRUCTIONS) && defined(CAN_USE_SUDIV) && \ |
| defined(CAN_USE_NEON) && defined(CAN_USE_VFP3_INSTRUCTIONS)) |
| #define ARM_ARCH_DEFAULT "armv8" |
| #elif defined(CAN_USE_ARMV7_INSTRUCTIONS) && defined(CAN_USE_SUDIV) && \ |
| defined(CAN_USE_NEON) && defined(CAN_USE_VFP3_INSTRUCTIONS) |
| #define ARM_ARCH_DEFAULT "armv7+sudiv" |
| #elif defined(CAN_USE_ARMV7_INSTRUCTIONS) && defined(CAN_USE_NEON) && \ |
| defined(CAN_USE_VFP3_INSTRUCTIONS) |
| #define ARM_ARCH_DEFAULT "armv7" |
| #else |
| #define ARM_ARCH_DEFAULT "armv6" |
| #endif |
| |
| #ifdef V8_OS_WIN |
| # define ENABLE_LOG_COLOUR false |
| #else |
| # define ENABLE_LOG_COLOUR true |
| #endif |
| |
| #define DEFINE_BOOL(nam, def, cmt) FLAG(BOOL, bool, nam, def, cmt) |
| #define DEFINE_BOOL_READONLY(nam, def, cmt) \ |
| FLAG_READONLY(BOOL, bool, nam, def, cmt) |
| #define DEFINE_MAYBE_BOOL(nam, cmt) \ |
| FLAG(MAYBE_BOOL, MaybeBoolFlag, nam, {false COMMA false}, 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) |
| #define DEFINE_STRING(nam, def, cmt) FLAG(STRING, const char*, nam, def, cmt) |
| #define DEFINE_ARGS(nam, cmt) FLAG(ARGS, JSArguments, nam, {0 COMMA NULL}, cmt) |
| |
| #define DEFINE_ALIAS_BOOL(alias, nam) FLAG_ALIAS(BOOL, bool, alias, nam) |
| #define DEFINE_ALIAS_INT(alias, nam) FLAG_ALIAS(INT, int, alias, nam) |
| #define DEFINE_ALIAS_FLOAT(alias, nam) FLAG_ALIAS(FLOAT, double, alias, nam) |
| #define DEFINE_ALIAS_STRING(alias, nam) \ |
| FLAG_ALIAS(STRING, const char*, alias, nam) |
| #define DEFINE_ALIAS_ARGS(alias, nam) FLAG_ALIAS(ARGS, JSArguments, alias, nam) |
| |
| // |
| // Flags in all modes. |
| // |
| #define FLAG FLAG_FULL |
| |
| DEFINE_BOOL(experimental_extras, false, |
| "enable code compiled in via v8_experimental_extra_library_files") |
| |
| // Flags for language modes and experimental language features. |
| DEFINE_BOOL(use_strict, false, "enforce strict mode") |
| |
| DEFINE_BOOL(es_staging, false, |
| "enable test-worthy harmony features (for internal use only)") |
| DEFINE_BOOL(harmony, false, "enable all completed harmony features") |
| DEFINE_BOOL(harmony_shipping, true, "enable all shipped harmony features") |
| DEFINE_IMPLICATION(es_staging, harmony) |
| |
| |
| // Activate on ClusterFuzz. |
| DEFINE_IMPLICATION(es_staging, harmony_regexp_lookbehind) |
| DEFINE_IMPLICATION(es_staging, move_object_start) |
| |
| // Features that are still work in progress (behind individual flags). |
| #define HARMONY_INPROGRESS(V) \ |
| V(harmony_array_prototype_values, "harmony Array.prototype.values") \ |
| V(harmony_function_sent, "harmony function.sent") \ |
| V(harmony_sharedarraybuffer, "harmony sharedarraybuffer") \ |
| V(harmony_simd, "harmony simd") \ |
| V(harmony_do_expressions, "harmony do-expressions") \ |
| V(harmony_regexp_named_captures, "harmony regexp named captures") \ |
| V(harmony_regexp_property, "harmony unicode regexp property classes") \ |
| V(harmony_class_fields, "harmony public fields in class literals") \ |
| V(harmony_object_spread, "harmony object spread") |
| |
| // Features that are complete (but still behind --harmony/es-staging flag). |
| #define HARMONY_STAGED_BASE(V) \ |
| V(harmony_regexp_lookbehind, "harmony regexp lookbehind") \ |
| V(harmony_restrictive_generators, \ |
| "harmony restrictions on generator declarations") \ |
| V(harmony_tailcalls, "harmony tail calls") \ |
| V(harmony_trailing_commas, \ |
| "harmony trailing commas in function parameter lists") |
| |
| #ifdef V8_I18N_SUPPORT |
| #define HARMONY_STAGED(V) \ |
| HARMONY_STAGED_BASE(V) \ |
| V(icu_case_mapping, "case mapping with ICU rather than Unibrow") |
| #else |
| #define HARMONY_STAGED(V) HARMONY_STAGED_BASE(V) |
| #endif |
| |
| // Features that are shipping (turned on by default, but internal flag remains). |
| #define HARMONY_SHIPPING_BASE(V) V(harmony_async_await, "harmony async-await") |
| |
| #ifdef V8_I18N_SUPPORT |
| #define HARMONY_SHIPPING(V) \ |
| HARMONY_SHIPPING_BASE(V) \ |
| V(datetime_format_to_parts, "Intl.DateTimeFormat.formatToParts") |
| #else |
| #define HARMONY_SHIPPING(V) HARMONY_SHIPPING_BASE(V) |
| #endif |
| |
| // Once a shipping feature has proved stable in the wild, it will be dropped |
| // from HARMONY_SHIPPING, all occurrences of the FLAG_ variable are removed, |
| // and associated tests are moved from the harmony directory to the appropriate |
| // esN directory. |
| |
| |
| #define FLAG_INPROGRESS_FEATURES(id, description) \ |
| DEFINE_BOOL(id, false, "enable " #description " (in progress)") |
| HARMONY_INPROGRESS(FLAG_INPROGRESS_FEATURES) |
| #undef FLAG_INPROGRESS_FEATURES |
| |
| #define FLAG_STAGED_FEATURES(id, description) \ |
| DEFINE_BOOL(id, false, "enable " #description) \ |
| DEFINE_IMPLICATION(harmony, id) |
| HARMONY_STAGED(FLAG_STAGED_FEATURES) |
| #undef FLAG_STAGED_FEATURES |
| |
| #define FLAG_SHIPPING_FEATURES(id, description) \ |
| DEFINE_BOOL(id, true, "enable " #description) \ |
| DEFINE_NEG_NEG_IMPLICATION(harmony_shipping, id) |
| HARMONY_SHIPPING(FLAG_SHIPPING_FEATURES) |
| #undef FLAG_SHIPPING_FEATURES |
| |
| DEFINE_BOOL(future, false, |
| "Implies all staged features that we want to ship in the " |
| "not-too-far future") |
| DEFINE_IMPLICATION(future, ignition_staging) |
| |
| // Flags for experimental implementation features. |
| DEFINE_BOOL(allocation_site_pretenuring, true, |
| "pretenure with allocation sites") |
| DEFINE_BOOL(page_promotion, true, "promote pages based on utilization") |
| DEFINE_INT(page_promotion_threshold, 70, |
| "min percentage of live bytes on a page to enable fast evacuation") |
| DEFINE_BOOL(trace_pretenuring, false, |
| "trace pretenuring decisions of HAllocate instructions") |
| DEFINE_BOOL(trace_pretenuring_statistics, false, |
| "trace allocation site pretenuring statistics") |
| 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(track_field_types, true, "track field types") |
| DEFINE_IMPLICATION(track_field_types, track_fields) |
| DEFINE_IMPLICATION(track_field_types, track_heap_object_fields) |
| DEFINE_BOOL(smi_binop, true, "support smi representation in binary operations") |
| DEFINE_BOOL(mark_shared_functions_for_tier_up, false, |
| "mark shared functions for tier up") |
| |
| // Flags for strongly rooting literal arrays in the feedback vector. |
| DEFINE_BOOL(trace_strong_rooted_literals, false, "trace literal rooting") |
| |
| // Flags for optimization types. |
| DEFINE_BOOL(optimize_for_size, false, |
| "Enables optimizations which favor memory size over execution " |
| "speed") |
| |
| DEFINE_VALUE_IMPLICATION(optimize_for_size, max_semi_space_size, 1) |
| |
| // Flags for data representation optimizations |
| DEFINE_BOOL(unbox_double_arrays, true, "automatically unbox arrays of doubles") |
| DEFINE_BOOL(string_slices, true, "use string slices") |
| |
| // Flags for Ignition. |
| DEFINE_BOOL(ignition, false, "use ignition interpreter") |
| DEFINE_BOOL(ignition_staging, false, "use ignition with all staged features") |
| DEFINE_IMPLICATION(ignition_staging, ignition) |
| DEFINE_IMPLICATION(ignition_staging, compiler_dispatcher) |
| DEFINE_STRING(ignition_filter, "*", "filter for ignition interpreter") |
| DEFINE_BOOL(ignition_deadcode, true, |
| "use ignition dead code elimination optimizer") |
| DEFINE_BOOL(ignition_osr, true, "enable support for OSR from ignition code") |
| DEFINE_BOOL(ignition_peephole, true, "use ignition peephole optimizer") |
| DEFINE_BOOL(ignition_reo, true, "use ignition register equivalence optimizer") |
| DEFINE_BOOL(ignition_filter_expression_positions, true, |
| "filter expression positions before the bytecode pipeline") |
| DEFINE_BOOL(print_bytecode, false, |
| "print bytecode generated by ignition interpreter") |
| DEFINE_BOOL(trace_ignition, false, |
| "trace the bytecodes executed by the ignition interpreter") |
| DEFINE_BOOL(trace_ignition_codegen, false, |
| "trace the codegen of ignition interpreter bytecode handlers") |
| DEFINE_BOOL(trace_ignition_dispatches, false, |
| "traces the dispatches to bytecode handlers by the ignition " |
| "interpreter") |
| DEFINE_STRING(trace_ignition_dispatches_output_file, nullptr, |
| "the file to which the bytecode handler dispatch table is " |
| "written (by default, the table is not written to a file)") |
| |
| // Flags for Crankshaft. |
| DEFINE_BOOL(crankshaft, true, "use crankshaft") |
| DEFINE_STRING(hydrogen_filter, "*", "optimization filter") |
| DEFINE_BOOL(use_gvn, true, "use hydrogen global value numbering") |
| DEFINE_INT(gvn_iterations, 3, "maximum number of GVN fix-point iterations") |
| DEFINE_BOOL(use_canonicalizing, true, "use hydrogen instruction canonicalizing") |
| DEFINE_BOOL(use_inlining, true, "use function inlining") |
| DEFINE_BOOL(use_escape_analysis, true, "use hydrogen escape analysis") |
| DEFINE_BOOL(use_allocation_folding, true, "use allocation folding") |
| DEFINE_BOOL(use_local_allocation_folding, false, "only fold in basic blocks") |
| DEFINE_BOOL(use_write_barrier_elimination, true, |
| "eliminate write barriers targeting allocations in optimized code") |
| 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, 200, |
| "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, false, |
| "crankshaft harvests type feedback from stub cache") |
| DEFINE_BOOL(hydrogen_stats, false, "print statistics for hydrogen") |
| DEFINE_BOOL(trace_check_elimination, false, "trace check elimination phase") |
| DEFINE_BOOL(trace_environment_liveness, false, |
| "trace liveness of local variable slots") |
| DEFINE_BOOL(trace_hydrogen, false, "trace generated hydrogen to file") |
| DEFINE_STRING(trace_hydrogen_filter, "*", "hydrogen tracing filter") |
| 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_load_elimination, false, "trace load elimination") |
| DEFINE_BOOL(trace_store_elimination, false, "trace store elimination") |
| DEFINE_BOOL(turbo_verify_store_elimination, false, |
| "verify store elimination more rigorously") |
| 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_removable_simulates, false, "trace removable simulates") |
| 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(trace_bce, false, "trace array bounds check elimination") |
| 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(load_elimination, true, "use load elimination") |
| DEFINE_BOOL(check_elimination, true, "use check elimination") |
| DEFINE_BOOL(store_elimination, false, "use store elimination") |
| 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, true, "eliminate unreachable code") |
| DEFINE_BOOL(trace_osr, false, "trace on-stack replacement") |
| DEFINE_INT(stress_runs, 0, "number of stress runs") |
| DEFINE_BOOL(lookup_sample_by_shared, true, |
| "when picking a function to optimize, watch for shared function " |
| "info, not JSFunction itself") |
| DEFINE_BOOL(flush_optimized_code_cache, false, |
| "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_BOOL(inline_into_try, true, "inline into try blocks") |
| DEFINE_INT(escape_analysis_iterations, 1, |
| "maximum number of escape analysis fix-point iterations") |
| |
| DEFINE_BOOL(concurrent_recompilation, true, |
| "optimizing hot functions asynchronously on a separate thread") |
| DEFINE_BOOL(trace_concurrent_recompilation, false, |
| "track concurrent recompilation") |
| DEFINE_INT(concurrent_recompilation_queue_length, 8, |
| "the length of the concurrent compilation queue") |
| DEFINE_INT(concurrent_recompilation_delay, 0, |
| "artificial compilation delay in ms") |
| DEFINE_BOOL(block_concurrent_recompilation, false, |
| "block queued jobs until released") |
| |
| 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.") |
| |
| // Flags for TurboFan. |
| DEFINE_BOOL(turbo, false, "enable TurboFan compiler") |
| DEFINE_BOOL(turbo_sp_frame_access, false, |
| "use stack pointer-relative access to frame wherever possible") |
| DEFINE_BOOL(turbo_preprocess_ranges, true, |
| "run pre-register allocation heuristics") |
| DEFINE_BOOL(turbo_loop_stackcheck, true, "enable stack checks in loops") |
| DEFINE_STRING(turbo_filter, "~~", "optimization filter for TurboFan compiler") |
| DEFINE_BOOL(trace_turbo, false, "trace generated TurboFan IR") |
| DEFINE_BOOL(trace_turbo_graph, false, "trace generated TurboFan graphs") |
| DEFINE_IMPLICATION(trace_turbo_graph, trace_turbo) |
| DEFINE_STRING(trace_turbo_cfg_file, NULL, |
| "trace turbo cfg graph (for C1 visualizer) to a given file name") |
| DEFINE_BOOL(trace_turbo_types, true, "trace TurboFan's types") |
| DEFINE_BOOL(trace_turbo_scheduler, false, "trace TurboFan's scheduler") |
| DEFINE_BOOL(trace_turbo_reduction, false, "trace TurboFan's various reducers") |
| DEFINE_BOOL(trace_turbo_trimming, false, "trace TurboFan's graph trimmer") |
| DEFINE_BOOL(trace_turbo_jt, false, "trace TurboFan's jump threading") |
| DEFINE_BOOL(trace_turbo_ceq, false, "trace TurboFan's control equivalence") |
| DEFINE_BOOL(trace_turbo_loop, false, "trace TurboFan's loop optimizations") |
| DEFINE_BOOL(turbo_asm, true, "enable TurboFan for asm.js code") |
| DEFINE_BOOL(turbo_verify, DEBUG_BOOL, "verify TurboFan graphs at each phase") |
| DEFINE_STRING(turbo_verify_machine_graph, nullptr, |
| "verify TurboFan machine graph before instruction selection") |
| DEFINE_BOOL(csa_verify, DEBUG_BOOL, |
| "verify TurboFan machine graph of code stubs") |
| DEFINE_BOOL(trace_csa_verify, false, "trace code stubs verification") |
| DEFINE_STRING(csa_trap_on_node, nullptr, |
| "trigger break point when a node with given id is created in " |
| "given stub. The format is: StubName,NodeId") |
| DEFINE_BOOL(turbo_stats, false, "print TurboFan statistics") |
| DEFINE_BOOL(turbo_stats_nvp, false, |
| "print TurboFan statistics in machine-readable format") |
| DEFINE_BOOL(turbo_splitting, true, "split nodes during scheduling in TurboFan") |
| DEFINE_BOOL(function_context_specialization, false, |
| "enable function context specialization in TurboFan") |
| DEFINE_BOOL(turbo_inlining, true, "enable inlining in TurboFan") |
| DEFINE_BOOL(trace_turbo_inlining, false, "trace TurboFan inlining") |
| DEFINE_BOOL(turbo_load_elimination, true, "enable load elimination in TurboFan") |
| DEFINE_BOOL(trace_turbo_load_elimination, false, |
| "trace TurboFan load elimination") |
| DEFINE_BOOL(loop_assignment_analysis, true, "perform loop assignment analysis") |
| DEFINE_BOOL(turbo_profiling, false, "enable profiling in TurboFan") |
| DEFINE_BOOL(turbo_verify_allocation, DEBUG_BOOL, |
| "verify register allocation in TurboFan") |
| DEFINE_BOOL(turbo_move_optimization, true, "optimize gap moves in TurboFan") |
| DEFINE_BOOL(turbo_jt, true, "enable jump threading in TurboFan") |
| DEFINE_BOOL(turbo_loop_peeling, true, "Turbofan loop peeling") |
| DEFINE_BOOL(turbo_loop_variable, true, "Turbofan loop variable optimization") |
| DEFINE_BOOL(turbo_cf_optimization, true, "optimize control flow in TurboFan") |
| DEFINE_BOOL(turbo_frame_elision, true, "elide frames in TurboFan") |
| DEFINE_BOOL(turbo_escape, false, "enable escape analysis") |
| DEFINE_IMPLICATION(turbo, turbo_escape) |
| DEFINE_BOOL(turbo_instruction_scheduling, false, |
| "enable instruction scheduling in TurboFan") |
| DEFINE_BOOL(turbo_stress_instruction_scheduling, false, |
| "randomly schedule instructions to stress dependency tracking") |
| DEFINE_BOOL(turbo_store_elimination, true, |
| "enable store-store elimination in TurboFan") |
| |
| // Flags to help platform porters |
| DEFINE_BOOL(minimal, false, |
| "simplifies execution model to make porting " |
| "easier (e.g. always use Ignition, never use Crankshaft") |
| DEFINE_IMPLICATION(minimal, ignition) |
| DEFINE_NEG_IMPLICATION(minimal, crankshaft) |
| DEFINE_NEG_IMPLICATION(minimal, use_ic) |
| |
| // Flags for native WebAssembly. |
| DEFINE_BOOL(expose_wasm, false, "expose WASM interface to JavaScript") |
| DEFINE_INT(wasm_num_compilation_tasks, 10, |
| "number of parallel compilation tasks for wasm") |
| DEFINE_BOOL(trace_wasm_encoder, false, "trace encoding of wasm code") |
| DEFINE_BOOL(trace_wasm_decoder, false, "trace decoding of wasm code") |
| DEFINE_BOOL(trace_wasm_decode_time, false, "trace decoding time of wasm code") |
| DEFINE_BOOL(trace_wasm_compiler, false, "trace compiling of wasm code") |
| DEFINE_BOOL(trace_wasm_interpreter, false, "trace interpretation of wasm code") |
| DEFINE_INT(trace_wasm_ast_start, 0, |
| "start function for WASM AST trace (inclusive)") |
| DEFINE_INT(trace_wasm_ast_end, 0, "end function for WASM AST trace (exclusive)") |
| DEFINE_INT(trace_wasm_text_start, 0, |
| "start function for WASM text generation (inclusive)") |
| DEFINE_INT(trace_wasm_text_end, 0, |
| "end function for WASM text generation (exclusive)") |
| DEFINE_INT(skip_compiling_wasm_funcs, 0, "start compiling at function N") |
| DEFINE_BOOL(wasm_break_on_decoder_error, false, |
| "debug break when wasm decoder encounters an error") |
| DEFINE_BOOL(wasm_loop_assignment_analysis, true, |
| "perform loop assignment analysis for WASM") |
| |
| DEFINE_BOOL(validate_asm, false, "validate asm.js modules before compiling") |
| DEFINE_IMPLICATION(ignition_staging, validate_asm) |
| DEFINE_BOOL(trace_asm_time, false, "log asm.js timing info to the console") |
| |
| DEFINE_BOOL(dump_wasm_module, false, "dump WASM module bytes") |
| DEFINE_STRING(dump_wasm_module_path, NULL, "directory to dump wasm modules to") |
| |
| DEFINE_INT(typed_array_max_size_in_heap, 64, |
| "threshold for in-heap typed array") |
| |
| DEFINE_BOOL(wasm_simd_prototype, false, |
| "enable prototype simd opcodes for wasm") |
| DEFINE_BOOL(wasm_eh_prototype, false, |
| "enable prototype exception handling opcodes for wasm") |
| DEFINE_BOOL(wasm_mv_prototype, false, |
| "enable prototype multi-value support for wasm") |
| DEFINE_BOOL(wasm_atomics_prototype, false, |
| "enable prototype atomic opcodes for wasm") |
| |
| DEFINE_BOOL(wasm_opt, true, "enable wasm optimization") |
| DEFINE_BOOL(wasm_no_bounds_checks, false, |
| "disable bounds checks (performance testing only)") |
| DEFINE_BOOL(wasm_no_stack_checks, false, |
| "disable stack checks (performance testing only)") |
| |
| DEFINE_BOOL(wasm_trap_handler, false, |
| "use signal handlers to catch out of bounds memory access in wasm" |
| " (experimental, currently Linux x86_64 only)") |
| DEFINE_BOOL(wasm_guard_pages, false, |
| "add guard pages to the end of WebWassembly memory" |
| " (experimental, no effect on 32-bit)") |
| DEFINE_IMPLICATION(wasm_trap_handler, wasm_guard_pages) |
| DEFINE_BOOL(wasm_trap_if, false, |
| "enable the use of the trap_if operator for traps") |
| DEFINE_BOOL(wasm_code_fuzzer_gen_test, false, |
| "Generate a test case when running the wasm-code fuzzer") |
| // Profiler flags. |
| DEFINE_INT(frame_count, 1, "number of stack frames inspected by the profiler") |
| // 0x1800 fits in the immediate field of an ARM instruction. |
| DEFINE_INT(interrupt_budget, 0x1800, |
| "execution budget before interrupt is triggered") |
| DEFINE_INT(type_info_threshold, 25, |
| "percentage of ICs that must have type info to allow optimization") |
| DEFINE_INT(generic_ic_threshold, 30, |
| "max percentage of megamorphic/generic ICs to allow optimization") |
| DEFINE_INT(self_opt_count, 130, "call count before self-optimization") |
| |
| DEFINE_BOOL(trace_opt_verbose, false, "extra verbose compilation tracing") |
| DEFINE_IMPLICATION(trace_opt_verbose, trace_opt) |
| |
| // assembler-ia32.cc / assembler-arm.cc / assembler-x64.cc |
| DEFINE_BOOL(debug_code, DEBUG_BOOL, |
| "generate extra code (assertions) for debugging") |
| DEFINE_BOOL(code_comments, false, "emit comments in code disassembly") |
| DEFINE_BOOL(enable_sse3, true, "enable use of SSE3 instructions if available") |
| DEFINE_BOOL(enable_ssse3, true, "enable use of SSSE3 instructions if available") |
| DEFINE_BOOL(enable_sse4_1, true, |
| "enable use of SSE4.1 instructions if available") |
| DEFINE_BOOL(enable_sahf, true, |
| "enable use of SAHF instruction if available (X64 only)") |
| DEFINE_BOOL(enable_avx, true, "enable use of AVX instructions if available") |
| DEFINE_BOOL(enable_fma3, true, "enable use of FMA3 instructions if available") |
| DEFINE_BOOL(enable_bmi1, true, "enable use of BMI1 instructions if available") |
| DEFINE_BOOL(enable_bmi2, true, "enable use of BMI2 instructions if available") |
| DEFINE_BOOL(enable_lzcnt, true, "enable use of LZCNT instruction if available") |
| DEFINE_BOOL(enable_popcnt, true, |
| "enable use of POPCNT instruction if available") |
| DEFINE_STRING(arm_arch, ARM_ARCH_DEFAULT, |
| "generate instructions for the selected ARM architecture if " |
| "available: armv6, armv7, armv7+sudiv or armv8") |
| DEFINE_BOOL(enable_vldr_imm, false, |
| "enable use of constant pools for double immediate (ARM only)") |
| DEFINE_BOOL(force_long_branches, false, |
| "force all emitted branches to be in long mode (MIPS/PPC only)") |
| DEFINE_STRING(mcpu, "auto", "enable optimization for specific cpu") |
| |
| // Deprecated ARM flags (replaced by arm_arch). |
| DEFINE_MAYBE_BOOL(enable_armv7, "deprecated (use --arm_arch instead)") |
| DEFINE_MAYBE_BOOL(enable_vfp3, "deprecated (use --arm_arch instead)") |
| DEFINE_MAYBE_BOOL(enable_32dregs, "deprecated (use --arm_arch instead)") |
| DEFINE_MAYBE_BOOL(enable_neon, "deprecated (use --arm_arch instead)") |
| DEFINE_MAYBE_BOOL(enable_sudiv, "deprecated (use --arm_arch instead)") |
| DEFINE_MAYBE_BOOL(enable_armv8, "deprecated (use --arm_arch instead)") |
| |
| // regexp-macro-assembler-*.cc |
| DEFINE_BOOL(enable_regexp_unaligned_accesses, true, |
| "enable unaligned accesses for the regexp engine") |
| |
| // api.cc |
| DEFINE_BOOL(script_streaming, true, "enable parsing on background") |
| |
| // bootstrapper.cc |
| DEFINE_STRING(expose_natives_as, NULL, "expose natives in global object") |
| DEFINE_BOOL(expose_free_buffer, false, "expose freeBuffer extension") |
| 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_BOOL(expose_trigger_failure, false, "expose trigger-failure extension") |
| DEFINE_INT(stack_trace_limit, 10, "number of stack frames to capture") |
| DEFINE_BOOL(builtins_in_stack_traces, false, |
| "show built-in functions in stack traces") |
| |
| // builtins.cc |
| DEFINE_BOOL(allow_unsafe_function_constructor, false, |
| "allow invoking the function constructor without security checks") |
| |
| // builtins-ia32.cc |
| DEFINE_BOOL(inline_new, true, "use fast inline allocation") |
| |
| // 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, |
| "use random jit cookie to mask large constants") |
| |
| // codegen.cc |
| DEFINE_BOOL(lazy, true, "use lazy compilation") |
| DEFINE_BOOL(trace_opt, false, "trace lazy optimization") |
| DEFINE_BOOL(trace_opt_stats, false, "trace lazy optimization statistics") |
| DEFINE_BOOL(trace_file_names, false, |
| "include file names in trace-opt/trace-deopt output") |
| 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 optimize function deoptimization") |
| DEFINE_BOOL(trace_stub_failures, false, |
| "trace deoptimization of generated code stubs") |
| |
| DEFINE_BOOL(serialize_toplevel, true, "enable caching of toplevel scripts") |
| DEFINE_BOOL(serialize_eager, false, "compile eagerly when caching scripts") |
| DEFINE_BOOL(serialize_age_code, false, "pre age code in the code cache") |
| DEFINE_BOOL(trace_serializer, false, "print code serializer trace") |
| #ifdef DEBUG |
| DEFINE_BOOL(external_reference_stats, false, |
| "print statistics on external references used during serialization") |
| #endif // DEBUG |
| |
| // compiler.cc |
| 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") |
| |
| DEFINE_BOOL(cache_prototype_transitions, true, "cache prototype transitions") |
| |
| // compiler-dispatcher.cc |
| DEFINE_BOOL(compiler_dispatcher, false, "enable compiler dispatcher") |
| DEFINE_BOOL(trace_compiler_dispatcher, false, |
| "trace compiler dispatcher activity") |
| |
| // compiler-dispatcher-job.cc |
| DEFINE_BOOL( |
| trace_compiler_dispatcher_jobs, false, |
| "trace progress of individual jobs managed by the compiler dispatcher") |
| |
| // cpu-profiler.cc |
| DEFINE_INT(cpu_profiler_sampling_interval, 1000, |
| "CPU profiler sampling interval in microseconds") |
| |
| // Array abuse tracing |
| 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) |
| |
| // debugger |
| DEFINE_BOOL(trace_debug_json, false, "trace debugging JSON request/response") |
| DEFINE_BOOL(enable_liveedit, true, "enable liveedit experimental feature") |
| DEFINE_BOOL(hard_abort, true, "abort by crashing") |
| |
| // execution.cc |
| DEFINE_INT(stack_size, V8_DEFAULT_STACK_SIZE_KB, |
| "default size of stack region v8 is allowed to use (in kBytes)") |
| |
| // frames.cc |
| DEFINE_INT(max_stack_trace_source_length, 300, |
| "maximum length of function source code printed in a stack trace.") |
| |
| // full-codegen.cc |
| DEFINE_BOOL(always_inline_smi_code, false, |
| "always inline smi code in non-opt code") |
| DEFINE_BOOL(verify_operand_stack_depth, false, |
| "emit debug code that verifies the static tracking of the operand " |
| "stack depth") |
| |
| // heap.cc |
| DEFINE_INT(min_semi_space_size, 0, |
| "min size of a semi-space (in MBytes), the new space consists of two" |
| "semi-spaces") |
| DEFINE_INT(max_semi_space_size, 0, |
| "max size of a semi-space (in MBytes), the new space consists of two" |
| "semi-spaces") |
| DEFINE_INT(semi_space_growth_factor, 2, "factor by which to grow the new space") |
| DEFINE_BOOL(experimental_new_space_growth_heuristic, false, |
| "Grow the new space based on the percentage of survivors instead " |
| "of their absolute value.") |
| DEFINE_INT(max_old_space_size, 0, "max size of the old space (in Mbytes)") |
| DEFINE_INT(initial_old_space_size, 0, "initial old space size (in Mbytes)") |
| DEFINE_INT(max_executable_size, 0, "max size of executable memory (in Mbytes)") |
| DEFINE_BOOL(gc_global, false, "always perform global GCs") |
| DEFINE_INT(gc_interval, -1, "garbage collect after <n> allocations") |
| DEFINE_INT(retain_maps_for_n_gc, 2, |
| "keeps maps alive for <n> old space garbage collections") |
| DEFINE_BOOL(trace_gc, false, |
| "print one trace line following each garbage collection") |
| 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(trace_idle_notification, false, |
| "print one trace line following each idle notification") |
| DEFINE_BOOL(trace_idle_notification_verbose, false, |
| "prints the heap state used by the idle notification") |
| DEFINE_BOOL(print_max_heap_committed, false, |
| "print statistics of the maximum memory committed for the heap " |
| "in name=value format on exit") |
| DEFINE_BOOL(trace_gc_verbose, false, |
| "print more details following each garbage collection") |
| DEFINE_INT(trace_allocation_stack_interval, -1, |
| "print stack trace after <n> free-list allocations") |
| DEFINE_BOOL(trace_fragmentation, false, "report fragmentation for old space") |
| DEFINE_BOOL(trace_fragmentation_verbose, false, |
| "report fragmentation for old space (detailed)") |
| DEFINE_BOOL(trace_evacuation, false, "report evacuation statistics") |
| DEFINE_BOOL(trace_mutator_utilization, false, |
| "print mutator utilization, allocation speed, gc speed") |
| DEFINE_BOOL(weak_embedded_maps_in_optimized_code, true, |
| "make maps embedded in optimized code weak") |
| DEFINE_BOOL(weak_embedded_objects_in_optimized_code, true, |
| "make objects embedded in optimized code weak") |
| DEFINE_BOOL(flush_code, true, "flush code that we expect not to use again") |
| 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_wrappers, true, |
| "use incremental marking for marking wrappers") |
| DEFINE_INT(min_progress_during_incremental_marking_finalization, 32, |
| "keep finalizing incremental marking as long as we discover at " |
| "least this many unmarked objects") |
| DEFINE_INT(max_incremental_marking_finalization_rounds, 3, |
| "at most try this many times to finalize incremental marking") |
| DEFINE_BOOL(minor_mc, false, "perform young generation mark compact GCs") |
| DEFINE_NEG_IMPLICATION(minor_mc, incremental_marking) |
| DEFINE_BOOL(black_allocation, true, "use black allocation") |
| DEFINE_BOOL(concurrent_sweeping, true, "use concurrent sweeping") |
| DEFINE_BOOL(parallel_compaction, true, "use parallel compaction") |
| DEFINE_BOOL(parallel_pointer_update, true, |
| "use parallel pointer update during compaction") |
| 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(trace_gc_object_stats, false, |
| "trace object counts and memory usage") |
| DEFINE_INT(gc_stats, 0, "Used by tracing internally to enable gc statistics") |
| DEFINE_IMPLICATION(trace_gc_object_stats, track_gc_object_stats) |
| DEFINE_VALUE_IMPLICATION(track_gc_object_stats, gc_stats, 1) |
| DEFINE_VALUE_IMPLICATION(trace_gc_object_stats, gc_stats, 1) |
| DEFINE_NEG_IMPLICATION(trace_gc_object_stats, incremental_marking) |
| DEFINE_BOOL(track_detached_contexts, true, |
| "track native contexts that are expected to be garbage collected") |
| DEFINE_BOOL(trace_detached_contexts, false, |
| "trace native contexts that are expected to be garbage collected") |
| DEFINE_IMPLICATION(trace_detached_contexts, track_detached_contexts) |
| #ifdef VERIFY_HEAP |
| DEFINE_BOOL(verify_heap, false, "verify heap pointers before and after GC") |
| #endif |
| DEFINE_BOOL(move_object_start, true, "enable moving of object starts") |
| DEFINE_BOOL(memory_reducer, true, "use memory reducer") |
| DEFINE_INT(heap_growing_percent, 0, |
| "specifies heap growing factor as (1 + heap_growing_percent/100)") |
| |
| // spaces.cc |
| DEFINE_INT(v8_os_page_size, 0, "override OS page size (in KBytes)") |
| |
| // execution.cc, messages.cc |
| DEFINE_BOOL(clear_exceptions_on_js_entry, false, |
| "clear pending exceptions when entering JavaScript") |
| |
| // counters.cc |
| DEFINE_INT(histogram_interval, 600000, |
| "time interval in ms for aggregating memory histograms") |
| |
| // global-handles.cc |
| DEFINE_BOOL(trace_object_groups, false, |
| "print object groups detected during each garbage collection") |
| |
| // heap-snapshot-generator.cc |
| DEFINE_BOOL(heap_profiler_trace_objects, false, |
| "Dump heap object allocations/movements/size_updates") |
| |
| |
| // sampling-heap-profiler.cc |
| DEFINE_BOOL(sampling_heap_profiler_suppress_randomness, false, |
| "Use constant sample intervals to eliminate test flakiness") |
| |
| |
| // v8.cc |
| DEFINE_BOOL(use_idle_notification, true, |
| "Use idle notification to reduce memory footprint.") |
| // ic.cc |
| DEFINE_BOOL(use_ic, true, "use inline caching") |
| DEFINE_BOOL(trace_ic, false, "trace inline cache state transitions") |
| DEFINE_INT(ic_stats, 0, "inline cache state transitions statistics") |
| DEFINE_VALUE_IMPLICATION(trace_ic, ic_stats, 1) |
| |
| // macro-assembler-ia32.cc |
| DEFINE_BOOL(native_code_counters, false, |
| "generate extra code for manipulating stats counters") |
| |
| // mark-compact.cc |
| DEFINE_BOOL(always_compact, false, "Perform compaction on every full GC") |
| DEFINE_BOOL(never_compact, false, |
| "Never perform compaction on full GC - testing only") |
| DEFINE_BOOL(compact_code_space, true, "Compact code space on full 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_BOOL(zap_code_space, DEBUG_BOOL, |
| "Zap free memory in code space with 0xCC while sweeping.") |
| DEFINE_INT(random_seed, 0, |
| "Default seed for initializing random generator " |
| "(0, the default, means to use system random).") |
| |
| // objects.cc |
| DEFINE_BOOL(trace_weak_arrays, false, "Trace WeakFixedArray usage") |
| DEFINE_BOOL(trace_prototype_users, false, |
| "Trace updates to prototype user tracking") |
| DEFINE_BOOL(use_verbose_printer, true, "allows verbose printing") |
| DEFINE_BOOL(trace_for_in_enumerate, false, "Trace for-in enumerate slow-paths") |
| #if TRACE_MAPS |
| DEFINE_BOOL(trace_maps, false, "trace map creation") |
| #endif |
| |
| // parser.cc |
| DEFINE_BOOL(allow_natives_syntax, false, "allow natives syntax") |
| DEFINE_BOOL(trace_parse, false, "trace parsing and preparsing") |
| DEFINE_BOOL(trace_preparse, false, "trace preparsing decisions") |
| DEFINE_BOOL(lazy_inner_functions, true, "enable lazy parsing inner functions") |
| DEFINE_BOOL(aggressive_lazy_inner_functions, false, |
| "even lazier inner function parsing") |
| DEFINE_IMPLICATION(aggressive_lazy_inner_functions, lazy_inner_functions) |
| |
| // simulator-arm.cc, simulator-arm64.cc and simulator-mips.cc |
| DEFINE_BOOL(trace_sim, false, "Trace simulator execution") |
| DEFINE_BOOL(debug_sim, false, "Enable debugging the simulator") |
| DEFINE_BOOL(check_icache, false, |
| "Check icache flushes in ARM and MIPS simulator") |
| DEFINE_INT(stop_sim_at, 0, "Simulator stop after x number of instructions") |
| #if defined(V8_TARGET_ARCH_ARM64) || defined(V8_TARGET_ARCH_MIPS64) || \ |
| defined(V8_TARGET_ARCH_PPC64) |
| DEFINE_INT(sim_stack_alignment, 16, |
| "Stack alignment in bytes in simulator. This must be a power of two " |
| "and it must be at least 16. 16 is default.") |
| #else |
| DEFINE_INT(sim_stack_alignment, 8, |
| "Stack alingment in bytes in simulator (4 or 8, 8 is default)") |
| #endif |
| DEFINE_INT(sim_stack_size, 2 * MB / KB, |
| "Stack size of the ARM64, MIPS64 and PPC64 simulator " |
| "in kBytes (default is 2 MB)") |
| DEFINE_BOOL(log_regs_modified, true, |
| "When logging register values, only print modified registers.") |
| DEFINE_BOOL(log_colour, ENABLE_LOG_COLOUR, |
| "When logging, try to use coloured output.") |
| DEFINE_BOOL(ignore_asm_unimplemented_break, false, |
| "Don't break for ASM_UNIMPLEMENTED_BREAK macros.") |
| DEFINE_BOOL(trace_sim_messages, false, |
| "Trace simulator debug messages. Implied by --trace-sim.") |
| |
| // isolate.cc |
| DEFINE_BOOL(stack_trace_on_illegal, false, |
| "print stack trace when an illegal exception is thrown") |
| DEFINE_BOOL(abort_on_uncaught_exception, false, |
| "abort program (dump core) when an uncaught exception is thrown") |
| DEFINE_BOOL(abort_on_stack_overflow, false, |
| "Abort program when stack overflow (as opposed to throwing " |
| "RangeError). This is useful for fuzzing where the spec behaviour " |
| "would introduce nondeterminism.") |
| DEFINE_BOOL(randomize_hashes, true, |
| "randomize hashes to avoid predictable hash collisions " |
| "(with snapshots this option cannot override the baked-in seed)") |
| DEFINE_INT(hash_seed, 0, |
| "Fixed seed to use to hash property keys (0 means random)" |
| "(with snapshots this option cannot override the baked-in seed)") |
| DEFINE_BOOL(trace_rail, false, "trace RAIL mode") |
| DEFINE_BOOL(print_all_exceptions, false, |
| "print exception object and stack trace on each thrown exception") |
| |
| // runtime.cc |
| DEFINE_BOOL(runtime_call_stats, false, "report runtime call counts and times") |
| DEFINE_INT(runtime_stats, 0, |
| "internal usage only for controlling runtime statistics") |
| DEFINE_VALUE_IMPLICATION(runtime_call_stats, runtime_stats, 1) |
| |
| // snapshot-common.cc |
| DEFINE_BOOL(profile_deserialization, false, |
| "Print the time it takes to deserialize the snapshot.") |
| DEFINE_BOOL(serialization_statistics, false, |
| "Collect statistics on serialized objects.") |
| |
| // Regexp |
| DEFINE_BOOL(regexp_optimization, true, "generate optimized regexp code") |
| |
| // Testing flags test/cctest/test-{flags,api,serialization}.cc |
| DEFINE_BOOL(testing_bool_flag, true, "testing_bool_flag") |
| DEFINE_MAYBE_BOOL(testing_maybe_bool_flag, "testing_maybe_bool_flag") |
| DEFINE_INT(testing_int_flag, 13, "testing_int_flag") |
| DEFINE_FLOAT(testing_float_flag, 2.5, "float-flag") |
| DEFINE_STRING(testing_string_flag, "Hello, world!", "string-flag") |
| DEFINE_INT(testing_prng_seed, 42, "Seed used for threading test randomness") |
| |
| // mksnapshot.cc |
| DEFINE_STRING(startup_src, NULL, |
| "Write V8 startup as C++ src. (mksnapshot only)") |
| DEFINE_STRING(startup_blob, NULL, |
| "Write V8 startup blob file. (mksnapshot only)") |
| |
| // code-stubs-hydrogen.cc |
| DEFINE_BOOL(profile_hydrogen_code_stub_compilation, false, |
| "Print the time it takes to lazily compile hydrogen code stubs.") |
| |
| // mark-compact.cc |
| DEFINE_BOOL(force_marking_deque_overflows, false, |
| "force overflows of marking deque by reducing it's size " |
| "to 64 words") |
| |
| DEFINE_BOOL(stress_compaction, false, |
| "stress the GC compactor to flush out bugs (implies " |
| "--force_marking_deque_overflows)") |
| |
| DEFINE_BOOL(manual_evacuation_candidates_selection, false, |
| "Test mode only flag. It allows an unit test to select evacuation " |
| "candidates pages (requires --stress_compaction).") |
| |
| DEFINE_BOOL(disable_old_api_accessors, false, |
| "Disable old-style API accessors whose setters trigger through the " |
| "prototype chain") |
| |
| // |
| // Dev shell flags |
| // |
| |
| DEFINE_BOOL(help, false, "Print usage message, including flags, on console") |
| DEFINE_BOOL(dump_counters, false, "Dump counters on exit") |
| DEFINE_BOOL(dump_counters_nvp, false, |
| "Dump counters as name-value pairs on exit") |
| |
| DEFINE_STRING(map_counters, "", "Map counters to a file") |
| DEFINE_ARGS(js_arguments, |
| "Pass all remaining arguments to the script. Alias for \"--\".") |
| |
| // |
| // GDB JIT integration flags. |
| // |
| #undef FLAG |
| #ifdef ENABLE_GDB_JIT_INTERFACE |
| #define FLAG FLAG_FULL |
| #else |
| #define FLAG FLAG_READONLY |
| #endif |
| |
| DEFINE_BOOL(gdbjit, false, "enable GDBJIT interface") |
| DEFINE_BOOL(gdbjit_full, false, "enable GDBJIT interface for all code objects") |
| DEFINE_BOOL(gdbjit_dump, false, "dump elf objects with debug info to disk") |
| DEFINE_STRING(gdbjit_dump_filter, "", |
| "dump only objects containing this substring") |
| |
| #ifdef ENABLE_GDB_JIT_INTERFACE |
| DEFINE_IMPLICATION(gdbjit_full, gdbjit) |
| DEFINE_IMPLICATION(gdbjit_dump, gdbjit) |
| #endif |
| DEFINE_NEG_IMPLICATION(gdbjit, compact_code_space) |
| |
| // |
| // Debug only flags |
| // |
| #undef FLAG |
| #ifdef DEBUG |
| #define FLAG FLAG_FULL |
| #else |
| #define FLAG FLAG_READONLY |
| #endif |
| |
| // checks.cc |
| #ifdef ENABLE_SLOW_DCHECKS |
| DEFINE_BOOL(enable_slow_asserts, false, |
| "enable asserts that are slow to execute") |
| #endif |
| |
| // codegen-ia32.cc / codegen-arm.cc / macro-assembler-*.cc |
| DEFINE_BOOL(print_ast, false, "print source AST") |
| DEFINE_BOOL(print_builtin_ast, false, "print source AST for builtins") |
| DEFINE_BOOL(trap_on_abort, false, "replace aborts by breakpoints") |
| |
| // compiler.cc |
| DEFINE_BOOL(print_builtin_scopes, false, "print scopes for builtins") |
| DEFINE_BOOL(print_scopes, false, "print scopes") |
| |
| // contexts.cc |
| DEFINE_BOOL(trace_contexts, false, "trace contexts operations") |
| |
| // heap.cc |
| 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(print_handles, false, "report handles after GC") |
| DEFINE_BOOL(check_handle_count, false, |
| "Check that there are not too many handles at GC") |
| DEFINE_BOOL(print_global_handles, false, "report global handles after GC") |
| |
| // TurboFan debug-only flags. |
| DEFINE_BOOL(print_turbo_replay, false, |
| "print C++ code to recreate TurboFan graphs") |
| DEFINE_BOOL(trace_turbo_escape, false, "enable tracing in escape analysis") |
| |
| // objects.cc |
| DEFINE_BOOL(trace_normalization, false, |
| "prints when objects are turned into dictionaries.") |
| |
| // runtime.cc |
| DEFINE_BOOL(trace_lazy, false, "trace lazy compilation") |
| |
| // spaces.cc |
| DEFINE_BOOL(collect_heap_spill_statistics, false, |
| "report heap spill statistics along with heap_stats " |
| "(requires heap_stats)") |
| DEFINE_BOOL(trace_live_bytes, false, |
| "trace incrementing and resetting of live bytes") |
| DEFINE_BOOL(trace_isolates, false, "trace isolate state changes") |
| |
| // Regexp |
| DEFINE_BOOL(regexp_possessive_quantifier, false, |
| "enable possessive quantifier syntax for testing") |
| DEFINE_BOOL(trace_regexp_bytecodes, false, "trace regexp bytecode execution") |
| DEFINE_BOOL(trace_regexp_assembler, false, |
| "trace regexp macro assembler calls.") |
| DEFINE_BOOL(trace_regexp_parser, false, "trace regexp parsing") |
| |
| // Debugger |
| DEFINE_BOOL(print_break_location, false, "print source location on debug break") |
| |
| // wasm instance management |
| DEFINE_BOOL(trace_wasm_instances, false, |
| "trace creation and collection of wasm instances") |
| |
| // |
| // Logging and profiling flags |
| // |
| #undef FLAG |
| #define FLAG FLAG_FULL |
| |
| // log.cc |
| DEFINE_BOOL(log, false, |
| "Minimal logging (no API, code, GC, suspect, or handles samples).") |
| DEFINE_BOOL(log_all, false, "Log all events to the log file.") |
| DEFINE_BOOL(log_api, false, "Log API events to the log file.") |
| DEFINE_BOOL(log_code, false, |
| "Log code events to the log file without profiling.") |
| DEFINE_BOOL(log_gc, false, |
| "Log heap samples on garbage collection for the hp2ps tool.") |
| DEFINE_BOOL(log_handles, false, "Log global handle events.") |
| DEFINE_BOOL(log_suspect, false, "Log suspect operations.") |
| DEFINE_BOOL(prof, false, |
| "Log statistical profiling information (implies --log-code).") |
| DEFINE_BOOL(prof_cpp, false, "Like --prof, but ignore generated code.") |
| DEFINE_IMPLICATION(prof, prof_cpp) |
| DEFINE_BOOL(prof_browser_mode, true, |
| "Used with --prof, turns on browser-compatible mode for profiling.") |
| DEFINE_STRING(logfile, "v8.log", "Specify the name of the log file.") |
| DEFINE_BOOL(logfile_per_isolate, true, "Separate log files for each isolate.") |
| DEFINE_BOOL(ll_prof, false, "Enable low-level linux profiler.") |
| DEFINE_BOOL(perf_basic_prof, false, |
| "Enable perf linux profiler (basic support).") |
| DEFINE_NEG_IMPLICATION(perf_basic_prof, compact_code_space) |
| DEFINE_BOOL(perf_basic_prof_only_functions, false, |
| "Only report function code ranges to perf (i.e. no stubs).") |
| DEFINE_IMPLICATION(perf_basic_prof_only_functions, perf_basic_prof) |
| DEFINE_BOOL(perf_prof, false, |
| "Enable perf linux profiler (experimental annotate support).") |
| DEFINE_NEG_IMPLICATION(perf_prof, compact_code_space) |
| DEFINE_BOOL(perf_prof_unwinding_info, false, |
| "Enable unwinding info for perf linux profiler (experimental).") |
| DEFINE_IMPLICATION(perf_prof, perf_prof_unwinding_info) |
| 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) |
| DEFINE_BOOL(log_instruction_stats, false, "Log AArch64 instruction statistics.") |
| DEFINE_STRING(log_instruction_file, "arm64_inst.csv", |
| "AArch64 instruction statistics log file.") |
| DEFINE_INT(log_instruction_period, 1 << 22, |
| "AArch64 instruction statistics logging period.") |
| |
| DEFINE_BOOL(redirect_code_traces, false, |
| "output deopt information and disassembly into file " |
| "code-<pid>-<isolate id>.asm") |
| DEFINE_STRING(redirect_code_traces_to, NULL, |
| "output deopt information and disassembly into the given file") |
| |
| DEFINE_BOOL(hydrogen_track_positions, false, |
| "track source code positions when building IR") |
| |
| DEFINE_BOOL(print_opt_source, false, |
| "print source code of optimized and inlined functions") |
| DEFINE_IMPLICATION(hydrogen_track_positions, print_opt_source) |
| |
| // |
| // Disassembler only flags |
| // |
| #undef FLAG |
| #ifdef ENABLE_DISASSEMBLER |
| #define FLAG FLAG_FULL |
| #else |
| #define FLAG FLAG_READONLY |
| #endif |
| |
| // elements.cc |
| DEFINE_BOOL(trace_elements_transitions, false, "trace elements transitions") |
| |
| DEFINE_BOOL(trace_creation_allocation_sites, false, |
| "trace the creation of allocation sites") |
| |
| // code-stubs.cc |
| DEFINE_BOOL(print_code_stubs, false, "print code stubs") |
| DEFINE_BOOL(test_secondary_stub_cache, false, |
| "test secondary stub cache by disabling the primary one") |
| |
| DEFINE_BOOL(test_primary_stub_cache, false, |
| "test primary stub cache by disabling the secondary one") |
| |
| DEFINE_BOOL(test_small_max_function_context_stub_size, false, |
| "enable testing the function context size overflow path " |
| "by making the maximum size smaller") |
| |
| // codegen-ia32.cc / codegen-arm.cc |
| DEFINE_BOOL(print_code, false, "print generated code") |
| DEFINE_BOOL(print_opt_code, false, "print optimized code") |
| DEFINE_STRING(print_opt_code_filter, "*", "filter for printing optimized code") |
| DEFINE_BOOL(print_unopt_code, false, |
| "print unoptimized code before " |
| "printing optimized code based on it") |
| DEFINE_BOOL(print_code_verbose, false, "print more information for code") |
| DEFINE_BOOL(print_builtin_code, false, "print generated code for builtins") |
| |
| #ifdef ENABLE_DISASSEMBLER |
| DEFINE_BOOL(sodium, false, |
| "print generated code output suitable for use with " |
| "the Sodium code viewer") |
| |
| DEFINE_IMPLICATION(sodium, print_code_stubs) |
| DEFINE_IMPLICATION(sodium, print_code) |
| DEFINE_IMPLICATION(sodium, print_opt_code) |
| DEFINE_IMPLICATION(sodium, hydrogen_track_positions) |
| DEFINE_IMPLICATION(sodium, code_comments) |
| |
| DEFINE_BOOL(print_all_code, false, "enable all flags related to printing code") |
| DEFINE_IMPLICATION(print_all_code, print_code) |
| DEFINE_IMPLICATION(print_all_code, print_opt_code) |
| DEFINE_IMPLICATION(print_all_code, print_unopt_code) |
| DEFINE_IMPLICATION(print_all_code, print_code_verbose) |
| DEFINE_IMPLICATION(print_all_code, print_builtin_code) |
| DEFINE_IMPLICATION(print_all_code, print_code_stubs) |
| DEFINE_IMPLICATION(print_all_code, code_comments) |
| #ifdef DEBUG |
| DEFINE_IMPLICATION(print_all_code, trace_codegen) |
| #endif |
| #endif |
| |
| #undef FLAG |
| #define FLAG FLAG_FULL |
| |
| // |
| // Predictable mode related flags. |
| // |
| |
| DEFINE_BOOL(predictable, false, "enable predictable mode") |
| DEFINE_IMPLICATION(predictable, single_threaded) |
| DEFINE_NEG_IMPLICATION(predictable, memory_reducer) |
| DEFINE_VALUE_IMPLICATION(single_threaded, wasm_num_compilation_tasks, 0) |
| |
| // |
| // Threading related flags. |
| // |
| |
| DEFINE_BOOL(single_threaded, false, "disable the use of background tasks") |
| DEFINE_NEG_IMPLICATION(single_threaded, concurrent_recompilation) |
| DEFINE_NEG_IMPLICATION(single_threaded, concurrent_sweeping) |
| DEFINE_NEG_IMPLICATION(single_threaded, parallel_compaction) |
| |
| |
| #undef FLAG |
| |
| #ifdef VERIFY_PREDICTABLE |
| #define FLAG FLAG_FULL |
| #else |
| #define FLAG FLAG_READONLY |
| #endif |
| |
| DEFINE_BOOL(verify_predictable, false, |
| "this mode is used for checking that V8 behaves predictably") |
| DEFINE_INT(dump_allocations_digest_at_alloc, -1, |
| "dump allocations digest each n-th allocation") |
| |
| // |
| // Read-only flags |
| // |
| #undef FLAG |
| #define FLAG FLAG_READONLY |
| |
| // assembler.h |
| DEFINE_BOOL(enable_embedded_constant_pool, V8_EMBEDDED_CONSTANT_POOL, |
| "enable use of embedded constant pools (ARM/PPC only)") |
| |
| DEFINE_BOOL(unbox_double_fields, V8_DOUBLE_FIELDS_UNBOXING, |
| "enable in-object double fields unboxing (64-bit only)") |
| DEFINE_IMPLICATION(unbox_double_fields, track_double_fields) |
| |
| // Cleanup... |
| #undef FLAG_FULL |
| #undef FLAG_READONLY |
| #undef FLAG |
| #undef FLAG_ALIAS |
| |
| #undef DEFINE_BOOL |
| #undef DEFINE_MAYBE_BOOL |
| #undef DEFINE_INT |
| #undef DEFINE_STRING |
| #undef DEFINE_FLOAT |
| #undef DEFINE_ARGS |
| #undef DEFINE_IMPLICATION |
| #undef DEFINE_NEG_IMPLICATION |
| #undef DEFINE_NEG_VALUE_IMPLICATION |
| #undef DEFINE_VALUE_IMPLICATION |
| #undef DEFINE_ALIAS_BOOL |
| #undef DEFINE_ALIAS_INT |
| #undef DEFINE_ALIAS_STRING |
| #undef DEFINE_ALIAS_FLOAT |
| #undef DEFINE_ALIAS_ARGS |
| |
| #undef FLAG_MODE_DECLARE |
| #undef FLAG_MODE_DEFINE |
| #undef FLAG_MODE_DEFINE_DEFAULTS |
| #undef FLAG_MODE_META |
| #undef FLAG_MODE_DEFINE_IMPLICATIONS |
| |
| #undef COMMA |
