| ; Parameter options of the compiler. |
| |
| ; Copyright (C) 2019-2021 Free Software Foundation, Inc. |
| ; |
| ; This file is part of GCC. |
| ; |
| ; GCC is free software; you can redistribute it and/or modify it under |
| ; the terms of the GNU General Public License as published by the Free |
| ; Software Foundation; either version 3, or (at your option) any later |
| ; version. |
| ; |
| ; GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
| ; WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| ; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| ; for more details. |
| ; |
| ; You should have received a copy of the GNU General Public License |
| ; along with GCC; see the file COPYING3. If not see |
| ; <http://www.gnu.org/licenses/>. |
| |
| ; See the GCC internals manual (options.texi) for a description of this file's format. |
| |
| ; Please try to keep this file in ASCII collating order. |
| |
| -param=align-loop-iterations= |
| Common Joined UInteger Var(param_align_loop_iterations) Init(4) Param Optimization |
| Loops iterating at least selected number of iterations will get loop alignment. |
| |
| -param=align-threshold= |
| Common Joined UInteger Var(param_align_threshold) Init(100) IntegerRange(1, 65536) Param Optimization |
| Select fraction of the maximal frequency of executions of basic block in function given basic block get alignment. |
| |
| -param=asan-globals= |
| Common Joined UInteger Var(param_asan_globals) Init(1) IntegerRange(0, 1) Param |
| Enable asan globals protection. |
| |
| -param=asan-instrument-allocas= |
| Common Joined UInteger Var(param_asan_protect_allocas) Init(1) IntegerRange(0, 1) Param Optimization |
| Enable asan allocas/VLAs protection. |
| |
| -param=asan-instrument-reads= |
| Common Joined UInteger Var(param_asan_instrument_reads) Init(1) IntegerRange(0, 1) Param Optimization |
| Enable asan load operations protection. |
| |
| -param=asan-instrument-writes= |
| Common Joined UInteger Var(param_asan_instrument_writes) Init(1) IntegerRange(0, 1) Param Optimization |
| Enable asan store operations protection. |
| |
| -param=asan-instrumentation-with-call-threshold= |
| Common Joined UInteger Var(param_asan_instrumentation_with_call_threshold) Init(7000) Param Optimization |
| Use callbacks instead of inline code if number of accesses in function becomes greater or equal to this number. |
| |
| -param=asan-memintrin= |
| Common Joined UInteger Var(param_asan_memintrin) Init(1) IntegerRange(0, 1) Param Optimization |
| Enable asan builtin functions protection. |
| |
| -param=asan-stack= |
| Common Joined UInteger Var(param_asan_stack) Init(1) IntegerRange(0, 1) Param Optimization |
| Enable asan stack protection. |
| |
| -param=asan-use-after-return= |
| Common Joined UInteger Var(param_asan_use_after_return) Init(1) IntegerRange(0, 1) Param Optimization |
| Enable asan detection of use-after-return bugs. |
| |
| -param=hwasan-instrument-stack= |
| Common Joined UInteger Var(param_hwasan_instrument_stack) Init(1) IntegerRange(0, 1) Param Optimization |
| Enable hwasan instrumentation of statically sized stack-allocated variables. |
| |
| -param=hwasan-random-frame-tag= |
| Common Joined UInteger Var(param_hwasan_random_frame_tag) Init(1) IntegerRange(0, 1) Param Optimization |
| Use random base tag for each frame, as opposed to base always zero. |
| |
| -param=hwasan-instrument-allocas= |
| Common Joined UInteger Var(param_hwasan_instrument_allocas) Init(1) IntegerRange(0, 1) Param Optimization |
| Enable hwasan instrumentation of allocas/VLAs. |
| |
| -param=hwasan-instrument-reads= |
| Common Joined UInteger Var(param_hwasan_instrument_reads) Init(1) IntegerRange(0, 1) Param Optimization |
| Enable hwasan instrumentation of load operations. |
| |
| -param=hwasan-instrument-writes= |
| Common Joined UInteger Var(param_hwasan_instrument_writes) Init(1) IntegerRange(0, 1) Param Optimization |
| Enable hwasan instrumentation of store operations. |
| |
| -param=hwasan-instrument-mem-intrinsics= |
| Common Joined UInteger Var(param_hwasan_instrument_mem_intrinsics) Init(1) IntegerRange(0, 1) Param Optimization |
| Enable hwasan instrumentation of builtin functions. |
| |
| -param=avg-loop-niter= |
| Common Joined UInteger Var(param_avg_loop_niter) Init(10) IntegerRange(1, 65536) Param Optimization |
| Average number of iterations of a loop. |
| |
| -param=avoid-fma-max-bits= |
| Common Joined UInteger Var(param_avoid_fma_max_bits) IntegerRange(0, 512) Param Optimization |
| Maximum number of bits for which we avoid creating FMAs. |
| |
| -param=builtin-expect-probability= |
| Common Joined UInteger Var(param_builtin_expect_probability) Init(90) IntegerRange(0, 100) Param Optimization |
| Set the estimated probability in percentage for builtin expect. The default value is 90% probability. |
| |
| -param=builtin-string-cmp-inline-length= |
| Common Joined UInteger Var(param_builtin_string_cmp_inline_length) Init(3) IntegerRange(0, 100) Param Optimization |
| The maximum length of a constant string for a builtin string cmp call eligible for inlining. The default value is 3. |
| |
| -param=case-values-threshold= |
| Common Joined UInteger Var(param_case_values_threshold) Param Optimization |
| The smallest number of different values for which it is best to use a jump-table instead of a tree of conditional branches, if 0, use the default for the machine. |
| |
| -param=comdat-sharing-probability= |
| Common Joined UInteger Var(param_comdat_sharing_probability) Init(20) Param Optimization |
| Probability that COMDAT function will be shared with different compilation unit. |
| |
| -param=cxx-max-namespaces-for-diagnostic-help= |
| Common Joined UInteger Var(param_cxx_max_namespaces_for_diagnostic_help) Init(1000) Param |
| Maximum number of namespaces to search for alternatives when name lookup fails. |
| |
| -param=dse-max-alias-queries-per-store= |
| Common Joined UInteger Var(param_dse_max_alias_queries_per_store) Init(256) Param Optimization |
| Maximum number of queries into the alias oracle per store. |
| |
| -param=dse-max-object-size= |
| Common Joined UInteger Var(param_dse_max_object_size) Init(256) Param Optimization |
| Maximum size (in bytes) of objects tracked bytewise by dead store elimination. |
| |
| -param=early-inlining-insns= |
| Common Joined UInteger Var(param_early_inlining_insns) Init(6) Optimization Param |
| Maximal estimated growth of function body caused by early inlining of single call. |
| |
| -param=evrp-sparse-threshold= |
| Common Joined UInteger Var(param_evrp_sparse_threshold) Init(800) Optimization Param |
| Maximum number of basic blocks before EVRP uses a sparse cache. |
| |
| -param=evrp-mode= |
| Common Joined Var(param_evrp_mode) Enum(evrp_mode) Init(EVRP_MODE_EVRP_FIRST) Param Optimization |
| --param=evrp-mode=[legacy|ranger|legacy-first|ranger-first|ranger-trace|ranger-debug|trace|debug] Specifies the mode Early VRP should operate in. |
| |
| Enum |
| Name(evrp_mode) Type(enum evrp_mode) UnknownError(unknown evrp mode %qs) |
| |
| EnumValue |
| Enum(evrp_mode) String(legacy) Value(EVRP_MODE_EVRP_ONLY) |
| |
| EnumValue |
| Enum(evrp_mode) String(ranger) Value(EVRP_MODE_RVRP_ONLY) |
| |
| EnumValue |
| Enum(evrp_mode) String(legacy-first) Value(EVRP_MODE_EVRP_FIRST) |
| |
| EnumValue |
| Enum(evrp_mode) String(ranger-first) Value(EVRP_MODE_RVRP_FIRST) |
| |
| EnumValue |
| Enum(evrp_mode) String(ranger-trace) Value(EVRP_MODE_RVRP_TRACE) |
| |
| EnumValue |
| Enum(evrp_mode) String(ranger-debug) Value(EVRP_MODE_RVRP_DEBUG) |
| |
| EnumValue |
| Enum(evrp_mode) String(trace) Value(EVRP_MODE_TRACE) |
| |
| EnumValue |
| Enum(evrp_mode) String(debug) Value(EVRP_MODE_DEBUG) |
| |
| -param=ranger-logical-depth= |
| Common Joined UInteger Var(param_ranger_logical_depth) Init(6) IntegerRange(1, 999) Param Optimization |
| Maximum depth of logical expression evaluation ranger will look through when |
| evaluating outgoing edge ranges. |
| |
| -param=fsm-maximum-phi-arguments= |
| Common Joined UInteger Var(param_fsm_maximum_phi_arguments) Init(100) IntegerRange(1, 999999) Param Optimization |
| Maximum number of arguments a PHI may have before the FSM threader will not try to thread through its block. |
| |
| -param=fsm-scale-path-blocks= |
| Common Joined UInteger Var(param_fsm_scale_path_blocks) Init(3) IntegerRange(1, 10) Param Optimization |
| Scale factor to apply to the number of blocks in a threading path when comparing to the number of (scaled) statements. |
| |
| -param=fsm-scale-path-stmts= |
| Common Joined UInteger Var(param_fsm_scale_path_stmts) Init(2) IntegerRange(1, 10) Param Optimization |
| Scale factor to apply to the number of statements in a threading path when comparing to the number of (scaled) blocks. |
| |
| -param=gcse-after-reload-critical-fraction= |
| Common Joined UInteger Var(param_gcse_after_reload_critical_fraction) Init(10) Param Optimization |
| The threshold ratio of critical edges execution count that permit performing redundancy elimination after reload. |
| |
| -param=gcse-after-reload-partial-fraction= |
| Common Joined UInteger Var(param_gcse_after_reload_partial_fraction) Init(3) Param Optimization |
| The threshold ratio for performing partial redundancy elimination after reload. |
| |
| -param=gcse-cost-distance-ratio= |
| Common Joined UInteger Var(param_gcse_cost_distance_ratio) Init(10) Param Optimization |
| Scaling factor in calculation of maximum distance an expression can be moved by GCSE optimizations. |
| |
| -param=gcse-unrestricted-cost= |
| Common Joined UInteger Var(param_gcse_unrestricted_cost) Init(3) Param Optimization |
| Cost at which GCSE optimizations will not constraint the distance an expression can travel. |
| |
| -param=ggc-min-expand= |
| Common Joined UInteger Var(param_ggc_min_expand) Init(30) Param |
| Minimum heap expansion to trigger garbage collection, as a percentage of the total size of the heap. |
| |
| -param=ggc-min-heapsize= |
| Common Joined UInteger Var(param_ggc_min_heapsize) Init(4096) Param |
| Minimum heap size before we start collecting garbage, in kilobytes. |
| |
| -param=gimple-fe-computed-hot-bb-threshold= |
| Common Joined UInteger Var(param_gimple_fe_computed_hot_bb_threshold) Param |
| The number of executions of a basic block which is considered hot. The parameter is used only in GIMPLE FE. |
| |
| -param=graphite-allow-codegen-errors= |
| Common Joined UInteger Var(param_graphite_allow_codegen_errors) IntegerRange(0, 1) Param |
| Whether codegen errors should be ICEs when -fchecking. |
| |
| -param=graphite-max-arrays-per-scop= |
| Common Joined UInteger Var(param_graphite_max_arrays_per_scop) Init(100) Param Optimization |
| Maximum number of arrays per SCoP. |
| |
| -param=graphite-max-nb-scop-params= |
| Common Joined UInteger Var(param_graphite_max_nb_scop_params) Init(10) Param Optimization |
| Maximum number of parameters in a SCoP. |
| |
| -param=hash-table-verification-limit= |
| Common Joined UInteger Var(param_hash_table_verification_limit) Init(10) Param |
| The number of elements for which hash table verification is done for each searched element. |
| |
| -param=hot-bb-count-fraction= |
| Common Joined UInteger Var(param_hot_bb_count_fraction) Init(10000) Param |
| The denominator n of fraction 1/n of the maximal execution count of a basic block in the entire program that a basic block needs to at least have in order to be considered hot (used in non-LTO mode). |
| |
| -param=hot-bb-count-ws-permille= |
| Common Joined UInteger Var(param_hot_bb_count_ws_permille) Init(990) IntegerRange(0, 1000) Param |
| The number of most executed permilles of the profiled execution of the entire program to which the execution count of a basic block must be part of in order to be considered hot (used in LTO mode). |
| |
| -param=hot-bb-frequency-fraction= |
| Common Joined UInteger Var(param_hot_bb_frequency_fraction) Init(1000) Param |
| The denominator n of fraction 1/n of the execution frequency of the entry block of a function that a basic block of this function needs to at least have in order to be considered hot. |
| |
| -param=inline-heuristics-hint-percent= |
| Common Joined UInteger Var(param_inline_heuristics_hint_percent) Init(200) Optimization IntegerRange(100, 1000000) Param |
| The scale (in percents) applied to inline-insns-single and auto limits when heuristics hints that inlining is very profitable. |
| |
| -param=inline-min-speedup= |
| Common Joined UInteger Var(param_inline_min_speedup) Init(30) Optimization IntegerRange(0, 100) Param |
| The minimal estimated speedup allowing inliner to ignore inline-insns-single and inline-insns-auto. |
| |
| -param=inline-unit-growth= |
| Common Joined UInteger Var(param_inline_unit_growth) Init(40) Optimization Param |
| How much can given compilation unit grow because of the inlining (in percent). |
| |
| -param=integer-share-limit= |
| Common Joined UInteger Var(param_integer_share_limit) Init(251) IntegerRange(2, 65536) Param |
| The upper bound for sharing integer constants. |
| |
| -param=ipa-cp-eval-threshold= |
| Common Joined UInteger Var(param_ipa_cp_eval_threshold) Init(500) Param Optimization |
| Threshold ipa-cp opportunity evaluation that is still considered beneficial to clone. |
| |
| -param=ipa-cp-loop-hint-bonus= |
| Common Joined UInteger Var(param_ipa_cp_loop_hint_bonus) Init(64) Param Optimization |
| Compile-time bonus IPA-CP assigns to candidates which make loop bounds or strides known. |
| |
| -param=ipa-cp-max-recursive-depth= |
| Common Joined UInteger Var(param_ipa_cp_max_recursive_depth) Init(8) Param Optimization |
| Maximum depth of recursive cloning for self-recursive function. |
| |
| -param=ipa-cp-min-recursive-probability= |
| Common Joined UInteger Var(param_ipa_cp_min_recursive_probability) Init(2) Param Optimization |
| Recursive cloning only when the probability of call being executed exceeds the parameter. |
| |
| -param=ipa-cp-recursion-penalty= |
| Common Joined UInteger Var(param_ipa_cp_recursion_penalty) Init(40) IntegerRange(0, 100) Param Optimization |
| Percentage penalty the recursive functions will receive when they are evaluated for cloning. |
| |
| -param=ipa-cp-single-call-penalty= |
| Common Joined UInteger Var(param_ipa_cp_single_call_penalty) Init(15) IntegerRange(0, 100) Param Optimization |
| Percentage penalty functions containing a single call to another function will receive when they are evaluated for cloning. |
| |
| -param=ipa-cp-unit-growth= |
| Common Joined UInteger Var(param_ipa_cp_unit_growth) Init(10) Param Optimization |
| How much can given compilation unit grow because of the interprocedural constant propagation (in percent). |
| |
| -param=ipa-cp-large-unit-insns= |
| Common Joined UInteger Var(param_ipa_cp_large_unit_insns) Optimization Init(16000) Param |
| The size of translation unit that IPA-CP pass considers large. |
| |
| -param=ipa-cp-value-list-size= |
| Common Joined UInteger Var(param_ipa_cp_value_list_size) Init(8) Param Optimization |
| Maximum size of a list of values associated with each parameter for interprocedural constant propagation. |
| |
| -param=ipa-jump-function-lookups= |
| Common Joined UInteger Var(param_ipa_jump_function_lookups) Init(8) Param Optimization |
| Maximum number of statements visited during jump function offset discovery. |
| |
| -param=ipa-max-aa-steps= |
| Common Joined UInteger Var(param_ipa_max_aa_steps) Init(25000) Param Optimization |
| Maximum number of statements that will be visited by IPA formal parameter analysis based on alias analysis in any given function. |
| |
| -param=ipa-max-agg-items= |
| Common Joined UInteger Var(param_ipa_max_agg_items) Init(16) Param Optimization |
| Maximum number of aggregate content items for a parameter in jump functions and lattices. |
| |
| -param=ipa-max-param-expr-ops= |
| Common Joined UInteger Var(param_ipa_max_param_expr_ops) Init(10) Param Optimization |
| Maximum number of operations in a parameter expression that can be handled by IPA analysis. |
| |
| -param=ipa-max-loop-predicates= |
| Common Joined UInteger Var(param_ipa_max_loop_predicates) Init(16) Param Optimization |
| Maximum number of different predicates used to track properties of loops in IPA analysis. |
| |
| -param=ipa-max-switch-predicate-bounds= |
| Common Joined UInteger Var(param_ipa_max_switch_predicate_bounds) Init(5) Param Optimization |
| Maximal number of boundary endpoints of case ranges of switch statement used during IPA function summary generation. |
| |
| -param=ipa-sra-max-replacements= |
| Common Joined UInteger Var(param_ipa_sra_max_replacements) Optimization Init(8) IntegerRange(0, 16) Param |
| Maximum pieces that IPA-SRA tracks per formal parameter, as a consequence, also the maximum number of replacements of a formal parameter. |
| |
| -param=ipa-sra-ptr-growth-factor= |
| Common Joined UInteger Var(param_ipa_sra_ptr_growth_factor) Init(2) Param Optimization |
| Maximum allowed growth of number and total size of new parameters that ipa-sra replaces a pointer to an aggregate with. |
| |
| -param=ira-loop-reserved-regs= |
| Common Joined UInteger Var(param_ira_loop_reserved_regs) Init(2) Param Optimization |
| The number of registers in each class kept unused by loop invariant motion. |
| |
| -param=ira-max-conflict-table-size= |
| Common Joined UInteger Var(param_ira_max_conflict_table_size) Init(1000) Param Optimization |
| Max size of conflict table in MB. |
| |
| -param=ira-max-loops-num= |
| Common Joined UInteger Var(param_ira_max_loops_num) Init(100) Param Optimization |
| Max loops number for regional RA. |
| |
| -param=iv-always-prune-cand-set-bound= |
| Common Joined UInteger Var(param_iv_always_prune_cand_set_bound) Init(10) Param Optimization |
| If number of candidates in the set is smaller, we always try to remove unused ivs during its optimization. |
| |
| -param=iv-consider-all-candidates-bound= |
| Common Joined UInteger Var(param_iv_consider_all_candidates_bound) Init(40) Param Optimization |
| Bound on number of candidates below that all candidates are considered in iv optimizations. |
| |
| -param=iv-max-considered-uses= |
| Common Joined UInteger Var(param_iv_max_considered_uses) Init(250) Param Optimization |
| Bound on number of iv uses in loop optimized in iv optimizations. |
| |
| -param=jump-table-max-growth-ratio-for-size= |
| Common Joined UInteger Var(param_jump_table_max_growth_ratio_for_size) Init(300) Param Optimization |
| The maximum code size growth ratio when expanding into a jump table (in percent). The parameter is used when optimizing for size. |
| |
| -param=jump-table-max-growth-ratio-for-speed= |
| Common Joined UInteger Var(param_jump_table_max_growth_ratio_for_speed) Init(800) Param Optimization |
| The maximum code size growth ratio when expanding into a jump table (in percent). The parameter is used when optimizing for speed. |
| |
| -param=l1-cache-line-size= |
| Common Joined UInteger Var(param_l1_cache_line_size) Init(32) Param Optimization |
| The size of L1 cache line. |
| |
| -param=l1-cache-size= |
| Common Joined UInteger Var(param_l1_cache_size) Init(64) Param Optimization |
| The size of L1 cache. |
| |
| -param=l2-cache-size= |
| Common Joined UInteger Var(param_l2_cache_size) Init(512) Param Optimization |
| The size of L2 cache. |
| |
| -param=large-function-growth= |
| Common Joined UInteger Var(param_large_function_growth) Optimization Init(100) Param |
| Maximal growth due to inlining of large function (in percent). |
| |
| -param=large-function-insns= |
| Common Joined UInteger Var(param_large_function_insns) Optimization Init(2700) Param |
| The size of function body to be considered large. |
| |
| -param=large-stack-frame= |
| Common Joined UInteger Var(param_large_stack_frame) Init(256) Optimization Param |
| The size of stack frame to be considered large. |
| |
| -param=large-stack-frame-growth= |
| Common Joined UInteger Var(param_stack_frame_growth) Optimization Init(1000) Param |
| Maximal stack frame growth due to inlining (in percent). |
| |
| -param=large-unit-insns= |
| Common Joined UInteger Var(param_large_unit_insns) Optimization Init(10000) Param |
| The size of translation unit to be considered large. |
| |
| -param=lazy-modules= |
| C++ Joined UInteger Var(param_lazy_modules) Init(32768) Param |
| Maximum number of concurrently open C++ module files when lazy loading. |
| |
| -param=lim-expensive= |
| Common Joined UInteger Var(param_lim_expensive) Init(20) Param Optimization |
| The minimum cost of an expensive expression in the loop invariant motion. |
| |
| -param=logical-op-non-short-circuit= |
| Common Joined UInteger Var(param_logical_op_non_short_circuit) Init(-1) IntegerRange(-1, 1) Param |
| True if a non-short-circuit operation is optimal. |
| |
| -param=loop-block-tile-size= |
| Common Joined UInteger Var(param_loop_block_tile_size) Init(51) Param Optimization |
| Size of tiles for loop blocking. |
| |
| -param=loop-interchange-max-num-stmts= |
| Common Joined UInteger Var(param_loop_interchange_max_num_stmts) Init(64) Param Optimization |
| The maximum number of stmts in loop nest for loop interchange. |
| |
| -param=loop-interchange-stride-ratio= |
| Common Joined UInteger Var(param_loop_interchange_stride_ratio) Init(2) Param Optimization |
| The minimum stride ratio for loop interchange to be profitable. |
| |
| -param=loop-invariant-max-bbs-in-loop= |
| Common Joined UInteger Var(param_loop_invariant_max_bbs_in_loop) Init(10000) Param Optimization |
| Max basic blocks number in loop for loop invariant motion. |
| |
| -param=loop-max-datarefs-for-datadeps= |
| Common Joined UInteger Var(param_loop_max_datarefs_for_datadeps) Init(1000) Param Optimization |
| Maximum number of datarefs in loop for building loop data dependencies. |
| |
| -param=loop-versioning-max-inner-insns= |
| Common Joined UInteger Var(param_loop_versioning_max_inner_insns) Init(200) Param Optimization |
| The maximum number of instructions in an inner loop that is being considered for versioning. |
| |
| -param=loop-versioning-max-outer-insns= |
| Common Joined UInteger Var(param_loop_versioning_max_outer_insns) Init(100) Param Optimization |
| The maximum number of instructions in an outer loop that is being considered for versioning, on top of the instructions in inner loops. |
| |
| -param=lra-inheritance-ebb-probability-cutoff= |
| Common Joined UInteger Var(param_lra_inheritance_ebb_probability_cutoff) Init(40) IntegerRange(0, 100) Param Optimization |
| Minimal fall-through edge probability in percentage used to add BB to inheritance EBB in LRA. |
| |
| -param=lra-max-considered-reload-pseudos= |
| Common Joined UInteger Var(param_lra_max_considered_reload_pseudos) Init(500) Param Optimization |
| The max number of reload pseudos which are considered during spilling a non-reload pseudo. |
| |
| -param=lto-max-partition= |
| Common Joined UInteger Var(param_max_partition_size) Init(1000000) Param |
| Maximal size of a partition for LTO (in estimated instructions). |
| |
| -param=lto-max-streaming-parallelism= |
| Common Joined UInteger Var(param_max_lto_streaming_parallelism) Init(32) IntegerRange(1, 65536) Param |
| maximal number of LTO partitions streamed in parallel. |
| |
| -param=lto-min-partition= |
| Common Joined UInteger Var(param_min_partition_size) Init(10000) Param |
| Minimal size of a partition for LTO (in estimated instructions). |
| |
| -param=lto-partitions= |
| Common Joined UInteger Var(param_lto_partitions) Init(128) IntegerRange(1, 65536) Param |
| Number of partitions the program should be split to. |
| |
| -param=max-average-unrolled-insns= |
| Common Joined UInteger Var(param_max_average_unrolled_insns) Init(80) Param Optimization |
| The maximum number of instructions to consider to unroll in a loop on average. |
| |
| -param=max-combine-insns= |
| Common Joined UInteger Var(param_max_combine_insns) Init(4) IntegerRange(2, 4) Param Optimization |
| The maximum number of insns combine tries to combine. |
| |
| -param=max-completely-peel-loop-nest-depth= |
| Common Joined UInteger Var(param_max_unroll_iterations) Init(8) Param Optimization |
| The maximum depth of a loop nest we completely peel. |
| |
| -param=max-completely-peel-times= |
| Common Joined UInteger Var(param_max_completely_peel_times) Init(16) Param Optimization |
| The maximum number of peelings of a single loop that is peeled completely. |
| |
| -param=max-completely-peeled-insns= |
| Common Joined UInteger Var(param_max_completely_peeled_insns) Init(200) Param Optimization |
| The maximum number of insns of a completely peeled loop. |
| |
| -param=max-crossjump-edges= |
| Common Joined UInteger Var(param_max_crossjump_edges) Init(100) Param Optimization |
| The maximum number of incoming edges to consider for crossjumping. |
| |
| -param=max-cse-insns= |
| Common Joined UInteger Var(param_max_cse_insns) Init(1000) Param Optimization |
| The maximum instructions CSE process before flushing. |
| |
| -param=max-cse-path-length= |
| Common Joined UInteger Var(param_max_cse_path_length) Init(10) IntegerRange(1, 65536) Param Optimization |
| The maximum length of path considered in cse. |
| |
| -param=max-cselib-memory-locations= |
| Common Joined UInteger Var(param_max_cselib_memory_locations) Init(500) Param Optimization |
| The maximum memory locations recorded by cselib. |
| |
| -param=max-debug-marker-count= |
| Common Joined UInteger Var(param_max_debug_marker_count) Init(100000) Param Optimization |
| Max. count of debug markers to expand or inline. |
| |
| -param=max-delay-slot-insn-search= |
| Common Joined UInteger Var(param_max_delay_slot_insn_search) Init(100) Param Optimization |
| The maximum number of instructions to consider to fill a delay slot. |
| |
| -param=max-delay-slot-live-search= |
| Common Joined UInteger Var(param_max_delay_slot_live_search) Init(333) Param Optimization |
| The maximum number of instructions to consider to find accurate live register information. |
| |
| -param=max-dse-active-local-stores= |
| Common Joined UInteger Var(param_max_dse_active_local_stores) Init(5000) Param Optimization |
| Maximum number of active local stores in RTL dead store elimination. |
| |
| -param=max-early-inliner-iterations= |
| Common Joined UInteger Var(param_early_inliner_max_iterations) Init(1) Param Optimization |
| The maximum number of nested indirect inlining performed by early inliner. |
| |
| -param=max-fields-for-field-sensitive= |
| Common Joined UInteger Var(param_max_fields_for_field_sensitive) Param |
| Maximum number of fields in a structure before pointer analysis treats the structure as a single variable. |
| |
| -param=max-fsm-thread-length= |
| Common Joined UInteger Var(param_max_fsm_thread_length) Init(10) IntegerRange(1, 999999) Param Optimization |
| Maximum number of basic blocks on a finite state automaton jump thread path. |
| |
| -param=max-fsm-thread-path-insns= |
| Common Joined UInteger Var(param_max_fsm_thread_path_insns) Init(100) IntegerRange(1, 999999) Param Optimization |
| Maximum number of instructions to copy when duplicating blocks on a finite state automaton jump thread path. |
| |
| -param=max-fsm-thread-paths= |
| Common Joined UInteger Var(param_max_fsm_thread_paths) Init(50) IntegerRange(1, 999999) Param Optimization |
| Maximum number of new jump thread paths to create for a finite state automaton. |
| |
| -param=max-gcse-insertion-ratio= |
| Common Joined UInteger Var(param_max_gcse_insertion_ratio) Init(20) Param Optimization |
| The maximum ratio of insertions to deletions of expressions in GCSE. |
| |
| -param=max-gcse-memory= |
| Common Joined UInteger Var(param_max_gcse_memory) Init(131072) Param Optimization |
| The maximum amount of memory to be allocated by GCSE, in kilobytes. |
| |
| -param=max-goto-duplication-insns= |
| Common Joined UInteger Var(param_max_goto_duplication_insns) Init(8) Param Optimization |
| The maximum number of insns to duplicate when unfactoring computed gotos. |
| |
| -param=max-grow-copy-bb-insns= |
| Common Joined UInteger Var(param_max_grow_copy_bb_insns) Init(8) Param Optimization |
| The maximum expansion factor when copying basic blocks. |
| |
| -param=max-hoist-depth= |
| Common Joined UInteger Var(param_max_hoist_depth) Init(30) Param Optimization |
| Maximum depth of search in the dominator tree for expressions to hoist. |
| |
| -param=max-inline-insns-auto= |
| Common Joined UInteger Var(param_max_inline_insns_auto) Init(15) Optimization Param |
| The maximum number of instructions when automatically inlining. |
| |
| -param=max-inline-insns-recursive= |
| Common Joined UInteger Var(param_max_inline_insns_recursive) Optimization Init(450) Param |
| The maximum number of instructions inline function can grow to via recursive inlining. |
| |
| -param=max-inline-insns-recursive-auto= |
| Common Joined UInteger Var(param_max_inline_insns_recursive_auto) Optimization Init(450) Param |
| The maximum number of instructions non-inline function can grow to via recursive inlining. |
| |
| -param=max-inline-insns-single= |
| Common Joined UInteger Var(param_max_inline_insns_single) Optimization Init(70) Param |
| The maximum number of instructions in a single function eligible for inlining. |
| |
| -param=max-inline-insns-size= |
| Common Joined UInteger Var(param_max_inline_insns_size) Optimization Param |
| The maximum number of instructions when inlining for size. |
| |
| -param=max-inline-insns-small= |
| Common Joined UInteger Var(param_max_inline_insns_small) Optimization Param |
| The maximum number of instructions when automatically inlining small functions. |
| |
| -param=max-inline-recursive-depth= |
| Common Joined UInteger Var(param_max_inline_recursive_depth) Optimization Init(8) Param |
| The maximum depth of recursive inlining for inline functions. |
| |
| -param=max-inline-recursive-depth-auto= |
| Common Joined UInteger Var(param_max_inline_recursive_depth_auto) Optimization Init(8) Param |
| The maximum depth of recursive inlining for non-inline functions. |
| |
| -param=max-isl-operations= |
| Common Joined UInteger Var(param_max_isl_operations) Init(350000) Param Optimization |
| Maximum number of isl operations, 0 means unlimited. |
| |
| -param=max-iterations-computation-cost= |
| Common Joined UInteger Var(param_max_iterations_computation_cost) Init(10) Param Optimization |
| Bound on the cost of an expression to compute the number of iterations. |
| |
| -param=max-iterations-to-track= |
| Common Joined UInteger Var(param_max_iterations_to_track) Init(1000) Param Optimization |
| Bound on the number of iterations the brute force # of iterations analysis algorithm evaluates. |
| |
| -param=max-jump-thread-duplication-stmts= |
| Common Joined UInteger Var(param_max_jump_thread_duplication_stmts) Init(15) Param Optimization |
| Maximum number of statements allowed in a block that needs to be duplicated when threading jumps. |
| |
| -param=max-last-value-rtl= |
| Common Joined UInteger Var(param_max_last_value_rtl) Init(10000) Param Optimization |
| The maximum number of RTL nodes that can be recorded as combiner's last value. |
| |
| -param=max-loop-header-insns= |
| Common Joined UInteger Var(param_max_loop_header_insns) Init(20) Param Optimization |
| The maximum number of insns in loop header duplicated by the copy loop headers pass. |
| |
| -param=max-modulo-backtrack-attempts= |
| Common Joined UInteger Var(param_max_modulo_backtrack_attempts) Init(40) Param Optimization |
| The maximum number of backtrack attempts the scheduler should make when modulo scheduling a loop. |
| |
| -param=max-partial-antic-length= |
| Common Joined UInteger Var(param_max_partial_antic_length) Init(100) Param Optimization |
| Maximum length of partial antic set when performing tree pre optimization. |
| |
| -param=max-peel-branches= |
| Common Joined UInteger Var(param_max_peel_branches) Init(32) Param Optimization |
| The maximum number of branches on the path through the peeled sequence. |
| |
| -param=max-peel-times= |
| Common Joined UInteger Var(param_max_peel_times) Init(16) Param Optimization |
| The maximum number of peelings of a single loop. |
| |
| -param=max-peeled-insns= |
| Common Joined UInteger Var(param_max_peeled_insns) Init(100) Param Optimization |
| The maximum number of insns of a peeled loop. |
| |
| -param=max-pending-list-length= |
| Common Joined UInteger Var(param_max_pending_list_length) Init(32) Param Optimization |
| The maximum length of scheduling's pending operations list. |
| |
| -param=max-pipeline-region-blocks= |
| Common Joined UInteger Var(param_max_pipeline_region_blocks) Init(15) Param Optimization |
| The maximum number of blocks in a region to be considered for interblock scheduling. |
| |
| -param=max-pipeline-region-insns= |
| Common Joined UInteger Var(param_max_pipeline_region_insns) Init(200) Param Optimization |
| The maximum number of insns in a region to be considered for interblock scheduling. |
| |
| -param=max-pow-sqrt-depth= |
| Common Joined UInteger Var(param_max_pow_sqrt_depth) Init(5) IntegerRange(1, 32) Param Optimization |
| Maximum depth of sqrt chains to use when synthesizing exponentiation by a real constant. |
| |
| -param=max-predicted-iterations= |
| Common Joined UInteger Var(param_max_predicted_iterations) Init(100) IntegerRange(0, 65536) Param Optimization |
| The maximum number of loop iterations we predict statically. |
| |
| -param=max-reload-search-insns= |
| Common Joined UInteger Var(param_max_reload_search_insns) Init(100) Param Optimization |
| The maximum number of instructions to search backward when looking for equivalent reload. |
| |
| -param=max-rtl-if-conversion-insns= |
| Common Joined UInteger Var(param_max_rtl_if_conversion_insns) Init(10) IntegerRange(0, 99) Param Optimization |
| Maximum number of insns in a basic block to consider for RTL if-conversion. |
| |
| -param=max-rtl-if-conversion-predictable-cost= |
| Common Joined UInteger Var(param_max_rtl_if_conversion_predictable_cost) Init(20) IntegerRange(0, 200) Param Optimization |
| Maximum permissible cost for the sequence that would be generated by the RTL if-conversion pass for a branch that is considered predictable. |
| |
| -param=max-rtl-if-conversion-unpredictable-cost= |
| Common Joined UInteger Var(param_max_rtl_if_conversion_unpredictable_cost) Init(40) IntegerRange(0, 200) Param Optimization |
| Maximum permissible cost for the sequence that would be generated by the RTL if-conversion pass for a branch that is considered unpredictable. |
| |
| -param=max-sched-extend-regions-iters= |
| Common Joined UInteger Var(param_max_sched_extend_regions_iters) Param Optimization |
| The maximum number of iterations through CFG to extend regions. |
| |
| -param=max-sched-insn-conflict-delay= |
| Common Joined UInteger Var(param_max_sched_insn_conflict_delay) Init(3) IntegerRange(1, 10) Param Optimization |
| The maximum conflict delay for an insn to be considered for speculative motion. |
| |
| -param=max-sched-ready-insns= |
| Common Joined UInteger Var(param_max_sched_ready_insns) Init(100) IntegerRange(1, 65536) Param Optimization |
| The maximum number of instructions ready to be issued to be considered by the scheduler during the first scheduling pass. |
| |
| -param=max-sched-region-blocks= |
| Common Joined UInteger Var(param_max_sched_region_blocks) Init(10) Param Optimization |
| The maximum number of blocks in a region to be considered for interblock scheduling. |
| |
| -param=max-sched-region-insns= |
| Common Joined UInteger Var(param_max_sched_region_insns) Init(100) Param Optimization |
| The maximum number of insns in a region to be considered for interblock scheduling. |
| |
| -param=max-slsr-cand-scan= |
| Common Joined UInteger Var(param_max_slsr_candidate_scan) Init(50) IntegerRange(1, 999999) Param Optimization |
| Maximum length of candidate scans for straight-line strength reduction. |
| |
| -param=max-speculative-devirt-maydefs= |
| Common Joined UInteger Var(param_max_speculative_devirt_maydefs) Init(50) Param Optimization |
| Maximum number of may-defs visited when devirtualizing speculatively. |
| |
| -param=max-ssa-name-query-depth= |
| Common Joined UInteger Var(param_max_ssa_name_query_depth) Init(3) IntegerRange(1, 10) Param |
| Maximum recursion depth allowed when querying a property of an SSA name. |
| |
| -param=max-stores-to-merge= |
| Common Joined UInteger Var(param_max_stores_to_merge) Init(64) IntegerRange(2, 65536) Param Optimization |
| Maximum number of constant stores to merge in the store merging pass. |
| |
| -param=max-stores-to-sink= |
| Common Joined UInteger Var(param_max_stores_to_sink) Init(2) Param Optimization |
| Maximum number of conditional store pairs that can be sunk. |
| |
| -param=max-store-chains-to-track= |
| Common Joined UInteger Var(param_max_store_chains_to_track) Init(64) IntegerRange(1, 65536) Param |
| Maximum number of store chains to track at the same time in the store merging pass. |
| |
| -param=max-stores-to-track= |
| Common Joined UInteger Var(param_max_stores_to_track) Init(1024) IntegerRange(2, 1048576) Param |
| Maximum number of store chains to track at the same time in the store merging pass. |
| |
| -param=max-tail-merge-comparisons= |
| Common Joined UInteger Var(param_max_tail_merge_comparisons) Init(10) Param Optimization |
| Maximum amount of similar bbs to compare a bb with. |
| |
| -param=max-tail-merge-iterations= |
| Common Joined UInteger Var(param_max_tail_merge_iterations) Init(2) Param Optimization |
| Maximum amount of iterations of the pass over a function. |
| |
| -param=max-tracked-strlens= |
| Common Joined UInteger Var(param_max_tracked_strlens) Init(10000) Param Optimization |
| Maximum number of strings for which strlen optimization pass will track string lengths. |
| |
| -param=max-tree-if-conversion-phi-args= |
| Common Joined UInteger Var(param_max_tree_if_conversion_phi_args) Init(4) IntegerRange(2, 65536) Param Optimization |
| Maximum number of arguments in a PHI supported by TREE if-conversion unless the loop is marked with simd pragma. |
| |
| -param=max-unroll-times= |
| Common Joined UInteger Var(param_max_unroll_times) Init(8) Param Optimization |
| The maximum number of unrollings of a single loop. |
| |
| -param=max-unrolled-insns= |
| Common Joined UInteger Var(param_max_unrolled_insns) Init(200) Param Optimization |
| The maximum number of instructions to consider to unroll in a loop. |
| |
| -param=max-unswitch-insns= |
| Common Joined UInteger Var(param_max_unswitch_insns) Init(50) Param Optimization |
| The maximum number of insns of an unswitched loop. |
| |
| -param=max-unswitch-level= |
| Common Joined UInteger Var(param_max_unswitch_level) Init(3) Param Optimization |
| The maximum number of unswitchings in a single loop. |
| |
| -param=max-variable-expansions-in-unroller= |
| Common Joined UInteger Var(param_max_variable_expansions) Init(1) Param Optimization |
| If -fvariable-expansion-in-unroller is used, the maximum number of times that an individual variable will be expanded during loop unrolling. |
| |
| -param=max-vartrack-expr-depth= |
| Common Joined UInteger Var(param_max_vartrack_expr_depth) Init(12) Param Optimization |
| Max. recursion depth for expanding var tracking expressions. |
| |
| -param=max-vartrack-reverse-op-size= |
| Common Joined UInteger Var(param_max_vartrack_reverse_op_size) Init(50) Param Optimization |
| Max. size of loc list for which reverse ops should be added. |
| |
| -param=max-vartrack-size= |
| Common Joined UInteger Var(param_max_vartrack_size) Init(50000000) Param Optimization |
| Max. size of var tracking hash tables. |
| |
| -param=max-find-base-term-values= |
| Common Joined UInteger Var(param_max_find_base_term_values) Init(200) Param Optimization |
| Maximum number of VALUEs handled during a single find_base_term call. |
| |
| -param=max-vrp-switch-assertions= |
| Common Joined UInteger Var(param_max_vrp_switch_assertions) Init(10) Param Optimization |
| Maximum number of assertions to add along the default edge of a switch statement during VRP. |
| |
| -param=min-crossjump-insns= |
| Common Joined UInteger Var(param_min_crossjump_insns) Init(5) IntegerRange(1, 65536) Param Optimization |
| The minimum number of matching instructions to consider for crossjumping. |
| |
| -param=min-inline-recursive-probability= |
| Common Joined UInteger Var(param_min_inline_recursive_probability) Init(10) Optimization Param |
| Inline recursively only when the probability of call being executed exceeds the parameter. |
| |
| -param=min-insn-to-prefetch-ratio= |
| Common Joined UInteger Var(param_min_insn_to_prefetch_ratio) Init(9) Param Optimization |
| Min. ratio of insns to prefetches to enable prefetching for a loop with an unknown trip count. |
| |
| -param=min-loop-cond-split-prob= |
| Common Joined UInteger Var(param_min_loop_cond_split_prob) Init(30) IntegerRange(0, 100) Param Optimization |
| The minimum threshold for probability of semi-invariant condition statement to trigger loop split. |
| |
| -param=min-nondebug-insn-uid= |
| Common Joined UInteger Var(param_min_nondebug_insn_uid) Param |
| The minimum UID to be used for a nondebug insn. |
| |
| -param=min-size-for-stack-sharing= |
| Common Joined UInteger Var(param_min_size_for_stack_sharing) Init(32) Param Optimization |
| The minimum size of variables taking part in stack slot sharing when not optimizing. |
| |
| -param=min-spec-prob= |
| Common Joined UInteger Var(param_min_spec_prob) Init(40) Param Optimization |
| The minimum probability of reaching a source block for interblock speculative scheduling. |
| |
| -param=min-vect-loop-bound= |
| Common Joined UInteger Var(param_min_vect_loop_bound) Param Optimization |
| If -ftree-vectorize is used, the minimal loop bound of a loop to be considered for vectorization. |
| |
| -param=openacc-kernels= |
| Common Joined Enum(openacc_kernels) Var(param_openacc_kernels) Init(OPENACC_KERNELS_PARLOOPS) Param |
| --param=openacc-kernels=[decompose|parloops] Specify mode of OpenACC 'kernels' constructs handling. |
| |
| Enum |
| Name(openacc_kernels) Type(enum openacc_kernels) |
| |
| EnumValue |
| Enum(openacc_kernels) String(decompose) Value(OPENACC_KERNELS_DECOMPOSE) |
| |
| EnumValue |
| Enum(openacc_kernels) String(parloops) Value(OPENACC_KERNELS_PARLOOPS) |
| |
| -param=parloops-chunk-size= |
| Common Joined UInteger Var(param_parloops_chunk_size) Param Optimization |
| Chunk size of omp schedule for loops parallelized by parloops. |
| |
| -param=parloops-min-per-thread= |
| Common Joined UInteger Var(param_parloops_min_per_thread) Init(100) IntegerRange(2, 65536) Param Optimization |
| Minimum number of iterations per thread of an innermost parallelized loop. |
| |
| -param=parloops-schedule= |
| Common Joined Var(param_parloops_schedule) Enum(parloops_schedule_type) Param Optimization |
| --param=parloops-schedule=[static|dynamic|guided|auto|runtime] Schedule type of omp schedule for loops parallelized by parloops. |
| |
| Enum |
| Name(parloops_schedule_type) Type(int) |
| |
| EnumValue |
| Enum(parloops_schedule_type) String(static) Value(PARLOOPS_SCHEDULE_STATIC) |
| |
| EnumValue |
| Enum(parloops_schedule_type) String(dynamic) Value(PARLOOPS_SCHEDULE_DYNAMIC) |
| |
| EnumValue |
| Enum(parloops_schedule_type) String(guided) Value(PARLOOPS_SCHEDULE_GUIDED) |
| |
| EnumValue |
| Enum(parloops_schedule_type) String(auto) Value(PARLOOPS_SCHEDULE_AUTO) |
| |
| EnumValue |
| Enum(parloops_schedule_type) String(runtime) Value(PARLOOPS_SCHEDULE_RUNTIME) |
| |
| -param=partial-inlining-entry-probability= |
| Common Joined UInteger Var(param_partial_inlining_entry_probability) Init(70) Optimization IntegerRange(0, 100) Param |
| Maximum probability of the entry BB of split region (in percent relative to entry BB of the function) to make partial inlining happen. |
| |
| -param=predictable-branch-outcome= |
| Common Joined UInteger Var(param_predictable_branch_outcome) Init(2) IntegerRange(0, 50) Param Optimization |
| Maximal estimated outcome of branch considered predictable. |
| |
| -param=prefetch-dynamic-strides= |
| Common Joined UInteger Var(param_prefetch_dynamic_strides) Init(1) IntegerRange(0, 1) Param Optimization |
| Whether software prefetch hints should be issued for non-constant strides. |
| |
| -param=prefetch-latency= |
| Common Joined UInteger Var(param_prefetch_latency) Init(200) Param Optimization |
| The number of insns executed before prefetch is completed. |
| |
| -param=prefetch-min-insn-to-mem-ratio= |
| Common Joined UInteger Var(param_prefetch_min_insn_to_mem_ratio) Init(3) Param Optimization |
| Min. ratio of insns to mem ops to enable prefetching in a loop. |
| |
| -param=prefetch-minimum-stride= |
| Common Joined UInteger Var(param_prefetch_minimum_stride) Init(-1) Param Optimization |
| The minimum constant stride beyond which we should use prefetch hints for. |
| |
| -param=profile-func-internal-id= |
| Common Joined UInteger Var(param_profile_func_internal_id) IntegerRange(0, 1) Param |
| Use internal function id in profile lookup. |
| |
| -param=rpo-vn-max-loop-depth= |
| Common Joined UInteger Var(param_rpo_vn_max_loop_depth) Init(7) IntegerRange(2, 65536) Param Optimization |
| Maximum depth of a loop nest to fully value-number optimistically. |
| |
| -param=sccvn-max-alias-queries-per-access= |
| Common Joined UInteger Var(param_sccvn_max_alias_queries_per_access) Init(1000) Param Optimization |
| Maximum number of disambiguations to perform per memory access. |
| |
| -param=scev-max-expr-complexity= |
| Common Joined UInteger Var(param_scev_max_expr_complexity) Init(10) Param Optimization |
| Bound on the complexity of the expressions in the scalar evolutions analyzer. |
| |
| -param=scev-max-expr-size= |
| Common Joined UInteger Var(param_scev_max_expr_size) Init(100) Param Optimization |
| Bound on size of expressions used in the scalar evolutions analyzer. |
| |
| -param=sched-autopref-queue-depth= |
| Common Joined UInteger Var(param_sched_autopref_queue_depth) Init(-1) Param Optimization |
| Hardware autoprefetcher scheduler model control flag. Number of lookahead cycles the model looks into, at '0' only enable instruction sorting heuristic. Disabled by default. |
| |
| -param=sched-mem-true-dep-cost= |
| Common Joined UInteger Var(param_sched_mem_true_dep_cost) Init(1) Param Optimization |
| Minimal distance between possibly conflicting store and load. |
| |
| -param=sched-pressure-algorithm= |
| Common Joined UInteger Var(param_sched_pressure_algorithm) Init(1) IntegerRange(1, 2) Param Optimization |
| Which -fsched-pressure algorithm to apply. |
| |
| -param=sched-spec-prob-cutoff= |
| Common Joined UInteger Var(param_sched_spec_prob_cutoff) Init(40) IntegerRange(0, 100) Param Optimization |
| The minimal probability of speculation success (in percents), so that speculative insn will be scheduled. |
| |
| -param=sched-state-edge-prob-cutoff= |
| Common Joined UInteger Var(param_sched_state_edge_prob_cutoff) Init(10) IntegerRange(0, 100) Param Optimization |
| The minimum probability an edge must have for the scheduler to save its state across it. |
| |
| -param=selsched-insns-to-rename= |
| Common Joined UInteger Var(param_selsched_insns_to_rename) Init(2) Param Optimization |
| Maximum number of instructions in the ready list that are considered eligible for renaming. |
| |
| -param=selsched-max-lookahead= |
| Common Joined UInteger Var(param_selsched_max_lookahead) Init(50) Param Optimization |
| The maximum size of the lookahead window of selective scheduling. |
| |
| -param=selsched-max-sched-times= |
| Common Joined UInteger Var(param_selsched_max_sched_times) Init(2) IntegerRange(1, 65536) Param Optimization |
| Maximum number of times that an insn could be scheduled. |
| |
| -param=simultaneous-prefetches= |
| Common Joined UInteger Var(param_simultaneous_prefetches) Init(3) Param Optimization |
| The number of prefetches that can run at the same time. |
| |
| -param=sink-frequency-threshold= |
| Common Joined UInteger Var(param_sink_frequency_threshold) Init(75) IntegerRange(0, 100) Param Optimization |
| Target block's relative execution frequency (as a percentage) required to sink a statement. |
| |
| -param=sms-dfa-history= |
| Common Joined UInteger Var(param_sms_dfa_history) IntegerRange(0, 16) Param Optimization |
| The number of cycles the swing modulo scheduler considers when checking conflicts using DFA. |
| |
| -param=sms-loop-average-count-threshold= |
| Common Joined UInteger Var(param_sms_loop_average_count_threshold) Param Optimization |
| A threshold on the average loop count considered by the swing modulo scheduler. |
| |
| -param=sms-max-ii-factor= |
| Common Joined UInteger Var(param_sms_max_ii_factor) Init(2) IntegerRange(1, 16) Param Optimization |
| A factor for tuning the upper bound that swing modulo scheduler uses for scheduling a loop. |
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| -param=sms-min-sc= |
| Common Joined UInteger Var(param_sms_min_sc) Init(2) IntegerRange(1, 2) Param Optimization |
| The minimum value of stage count that swing modulo scheduler will generate. |
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| -param=sra-max-scalarization-size-Osize= |
| Common Joined UInteger Var(param_sra_max_scalarization_size_size) Param Optimization |
| Maximum size, in storage units, of an aggregate which should be considered for scalarization when compiling for size. |
| |
| -param=sra-max-scalarization-size-Ospeed= |
| Common Joined UInteger Var(param_sra_max_scalarization_size_speed) Param Optimization |
| Maximum size, in storage units, of an aggregate which should be considered for scalarization when compiling for speed. |
| |
| -param=sra-max-propagations= |
| Common Joined UInteger Var(param_sra_max_propagations) Param Optimization Init(32) |
| Maximum number of artificial accesses to enable forward propagation that Scalar Replacement of Aggregates will keep for one local variable. |
| |
| -param=ssa-name-def-chain-limit= |
| Common Joined UInteger Var(param_ssa_name_def_chain_limit) Init(512) Param Optimization |
| The maximum number of SSA_NAME assignments to follow in determining a value. |
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| -param=ssp-buffer-size= |
| Common Joined UInteger Var(param_ssp_buffer_size) Init(8) IntegerRange(1, 65536) Param Optimization |
| The lower bound for a buffer to be considered for stack smashing protection. |
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| -param=stack-clash-protection-guard-size= |
| Common Joined UInteger Var(param_stack_clash_protection_guard_size) Init(12) IntegerRange(12, 30) Param Optimization |
| Size of the stack guard expressed as a power of two in bytes. |
| |
| -param=stack-clash-protection-probe-interval= |
| Common Joined UInteger Var(param_stack_clash_protection_probe_interval) Init(12) IntegerRange(10, 16) Param Optimization |
| Interval in which to probe the stack expressed as a power of two in bytes. |
| |
| -param=store-merging-allow-unaligned= |
| Common Joined UInteger Var(param_store_merging_allow_unaligned) Init(1) IntegerRange(0, 1) Param Optimization |
| Allow the store merging pass to introduce unaligned stores if it is legal to do so. |
| |
| -param=store-merging-max-size= |
| Common Joined UInteger Var(param_store_merging_max_size) Init(65536) IntegerRange(1, 65536) Param Optimization |
| Maximum size of a single store merging region in bytes. |
| |
| -param=switch-conversion-max-branch-ratio= |
| Common Joined UInteger Var(param_switch_conversion_branch_ratio) Init(8) IntegerRange(1, 65536) Param Optimization |
| The maximum ratio between array size and switch branches for a switch conversion to take place. |
| |
| -param=modref-max-bases= |
| Common Joined UInteger Var(param_modref_max_bases) Init(32) Param Optimization |
| Maximum number of bases stored in each modref tree. |
| |
| -param=modref-max-refs= |
| Common Joined UInteger Var(param_modref_max_refs) Init(16) Param Optimization |
| Maximum number of references stored in each modref base. |
| |
| -param=modref-max-accesses= |
| Common Joined UInteger Var(param_modref_max_accesses) Init(16) Param Optimization |
| Maximum number of accesses stored in each modref reference. |
| |
| -param=modref-max-tests= |
| Common Joined UInteger Var(param_modref_max_tests) Init(64) Param Optimization |
| Maximum number of tests performed by modref query. |
| |
| -param=modref-max-depth= |
| Common Joined UInteger Var(param_modref_max_depth) Init(256) Param Optimization |
| Maximum depth of DFS walk used by modref escape analysis. |
| |
| -param=modref-max-escape-points= |
| Common Joined UInteger Var(param_modref_max_escape_points) Init(256) Param Optimization |
| Maximum number of escape points tracked by modref per SSA-name. |
| |
| -param=tm-max-aggregate-size= |
| Common Joined UInteger Var(param_tm_max_aggregate_size) Init(9) Param Optimization |
| Size in bytes after which thread-local aggregates should be instrumented with the logging functions instead of save/restore pairs. |
| |
| -param=tracer-dynamic-coverage= |
| Common Joined UInteger Var(param_tracer_dynamic_coverage) Init(75) IntegerRange(0, 100) Param Optimization |
| The percentage of function, weighted by execution frequency, that must be covered by trace formation. Used when profile feedback is not available. |
| |
| -param=tracer-dynamic-coverage-feedback= |
| Common Joined UInteger Var(param_tracer_dynamic_coverage_feedback) Init(95) IntegerRange(0, 100) Param Optimization |
| The percentage of function, weighted by execution frequency, that must be covered by trace formation. Used when profile feedback is available. |
| |
| -param=tracer-max-code-growth= |
| Common Joined UInteger Var(param_tracer_max_code_growth) Init(100) Param Optimization |
| Maximal code growth caused by tail duplication (in percent). |
| |
| -param=tracer-min-branch-probability= |
| Common Joined UInteger Var(param_tracer_min_branch_probability) Init(50) IntegerRange(0, 100) Param Optimization |
| Stop forward growth if the probability of best edge is less than this threshold (in percent). Used when profile feedback is not available. |
| |
| -param=tracer-min-branch-probability-feedback= |
| Common Joined UInteger Var(param_tracer_min_branch_probability_feedback) Init(80) IntegerRange(0, 100) Param Optimization |
| Stop forward growth if the probability of best edge is less than this threshold (in percent). Used when profile feedback is available. |
| |
| -param=tracer-min-branch-ratio= |
| Common Joined UInteger Var(param_tracer_min_branch_ratio) Init(10) IntegerRange(0, 100) Param Optimization |
| Stop reverse growth if the reverse probability of best edge is less than this threshold (in percent). |
| |
| -param=tree-reassoc-width= |
| Common Joined UInteger Var(param_tree_reassoc_width) Param Optimization |
| Set the maximum number of instructions executed in parallel in reassociated tree. If 0, use the target dependent heuristic. |
| |
| -param=tsan-distinguish-volatile= |
| Common Joined UInteger Var(param_tsan_distinguish_volatile) IntegerRange(0, 1) Param |
| Emit special instrumentation for accesses to volatiles. |
| |
| -param=tsan-instrument-func-entry-exit= |
| Common Joined UInteger Var(param_tsan_instrument_func_entry_exit) Init(1) IntegerRange(0, 1) Param |
| Emit instrumentation calls to __tsan_func_entry() and __tsan_func_exit(). |
| |
| -param=uninit-control-dep-attempts= |
| Common Joined UInteger Var(param_uninit_control_dep_attempts) Init(1000) IntegerRange(1, 65536) Param Optimization |
| Maximum number of nested calls to search for control dependencies during uninitialized variable analysis. |
| |
| -param=uninlined-function-insns= |
| Common Joined UInteger Var(param_uninlined_function_insns) Init(2) Optimization IntegerRange(0, 1000000) Param |
| Instruction accounted for function prologue, epilogue and other overhead. |
| |
| -param=uninlined-function-time= |
| Common Joined UInteger Var(param_uninlined_function_time) Optimization IntegerRange(0, 1000000) Param |
| Time accounted for function prologue, epilogue and other overhead. |
| |
| -param=uninlined-thunk-insns= |
| Common Joined UInteger Var(param_uninlined_function_thunk_insns) Optimization Init(2) IntegerRange(0, 1000000) Param |
| Instruction accounted for function thunk overhead. |
| |
| -param=uninlined-thunk-time= |
| Common Joined UInteger Var(param_uninlined_function_thunk_time) Optimization Init(2) IntegerRange(0, 1000000) Param |
| Time accounted for function thunk overhead. |
| |
| -param=unlikely-bb-count-fraction= |
| Common Joined UInteger Var(param_unlikely_bb_count_fraction) Init(20) Param Optimization |
| The denominator n of fraction 1/n of the number of profiled runs of the entire program below which the execution count of a basic block must be in order for the basic block to be considered unlikely. |
| |
| -param=unroll-jam-max-unroll= |
| Common Joined UInteger Var(param_unroll_jam_max_unroll) Init(4) Param Optimization |
| Maximum unroll factor for the unroll-and-jam transformation. |
| |
| -param=unroll-jam-min-percent= |
| Common Joined UInteger Var(param_unroll_jam_min_percent) Init(1) IntegerRange(0, 100) Param Optimization |
| Minimum percentage of memrefs that must go away for unroll-and-jam to be considered profitable. |
| |
| -param=use-after-scope-direct-emission-threshold= |
| Common Joined UInteger Var(param_use_after_scope_direct_emission_threshold) Init(256) Param Optimization |
| Use direct poisoning/unpoisoning instructions for variables smaller or equal to this number. |
| |
| -param=use-canonical-types= |
| Common Joined UInteger Var(param_use_canonical_types) Init(1) IntegerRange(0, 1) Param |
| Whether to use canonical types. |
| |
| -param=vect-epilogues-nomask= |
| Common Joined UInteger Var(param_vect_epilogues_nomask) Init(1) IntegerRange(0, 1) Param Optimization |
| Enable loop epilogue vectorization using smaller vector size. |
| |
| -param=vect-max-peeling-for-alignment= |
| Common Joined UInteger Var(param_vect_max_peeling_for_alignment) Init(-1) IntegerRange(-1, 64) Param Optimization |
| Maximum number of loop peels to enhance alignment of data references in a loop. |
| |
| -param=vect-max-version-for-alias-checks= |
| Common Joined UInteger Var(param_vect_max_version_for_alias_checks) Init(10) Param Optimization |
| Bound on number of runtime checks inserted by the vectorizer's loop versioning for alias check. |
| |
| -param=vect-max-version-for-alignment-checks= |
| Common Joined UInteger Var(param_vect_max_version_for_alignment_checks) Init(6) Param Optimization |
| Bound on number of runtime checks inserted by the vectorizer's loop versioning for alignment check. |
| |
| -param=vect-partial-vector-usage= |
| Common Joined UInteger Var(param_vect_partial_vector_usage) Init(2) IntegerRange(0, 2) Param Optimization |
| Controls how loop vectorizer uses partial vectors. 0 means never, 1 means only for loops whose need to iterate can be removed, 2 means for all loops. The default value is 2. |
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| ; This comment is to ensure we retain the blank line above. |
