On 11/13/19 9:20 AM, Jan Hubicka wrote:
Hello.The patch is about removal of special *-O2 parameters that Honza added some time ago. Right now, we have a better mechanism how to have a different default value for a parameter. I'm planning to send a patch that will decorate some params with Optimization attribute and so that one can sensitively use them per-function. The patch is not a NOP, mainly because of param_max_inline_insns_auto params. As one can see: gcc/ipa-cp.c: if (size <= param_max_inline_insns_auto / 4) gcc/ipa-cp.c: else if (size <= param_max_inline_insns_auto / 2) gcc/ipa-cp.c: else if (size <= param_max_inline_insns_auto gcc/ipa-inline.c:inline_insns_auto (cgraph_node *n, bool hint) gcc/ipa-inline.c: return param_max_inline_insns_auto gcc/ipa-inline.c: return param_max_inline_insns_auto; gcc/ipa-inline.c: return param_max_inline_insns_auto_o2 gcc/ipa-inline.c: return param_max_inline_insns_auto_o2; gcc/ipa-inline.c: inline_insns_auto (caller, false)))) gcc/ipa-inline.c: > inline_insns_auto (e->caller, true)) gcc/ipa-inline.c: /* Apply param_max_inline_insns_auto limit for functions not declared gcc/ipa-inline.c: && growth >= inline_insns_auto (e->caller, apply_hints) gcc/ipa-inline.c: || growth >= inline_insns_auto (e->caller, true) gcc/ipa-inline.c: : inline_insns_auto (caller, false))) gcc/ipa-split.c: : param_max_inline_insns_auto) + 10) gcc/ipa-split.c: && current->split_size >= (unsigned int) param_max_inline_insns_auto + 10) gcc/opts.c: SET_OPTION_IF_UNSET (opts, opts_set, param_max_inline_insns_auto, gcc/params.opt:Common Joined UInteger Var(param_max_inline_insns_auto) Init(30) Param gcc/params.opt:Common Joined UInteger Var(param_max_inline_insns_auto_o2) Init(15) Param diff --git a/gcc/ipa-inline.c b/gcc/ipa-inline.c index df6f991ad79..9b96ca66137 100644 --- a/gcc/ipa-inline.c +++ b/gcc/ipa-inline.c @@ -393,44 +393,24 @@ can_inline_edge_p (struct cgraph_edge *e, bool report, scale up the bound. */static int-inline_insns_single (cgraph_node *n, bool hint) +inline_insns_single (bool hint) { - if (opt_for_fn (n->decl, optimize) >= 3) - { - if (hint) - return param_max_inline_insns_single - * param_inline_heuristics_hint_percent / 100; - return param_max_inline_insns_single; - } - else - { - if (hint) - return param_max_inline_insns_single_o2 - * param_inline_heuristics_hint_percent_o2 / 100; - return param_max_inline_insns_single_o2; - } + if (hint) + return param_max_inline_insns_single + * param_inline_heuristics_hint_percent / 100; + return param_max_inline_insns_single;I do not see how this can be nop for LTO where you combine -O2 and -O3 sources? With removing the N parameter there is no way to say what value should be used here.
Ah, I see, you are right. So let's do it the other way around and let's start with the Optimization keyword first.
I think we need to decorate them with Optimization first and then do something like param_for_fn and use it here?
No, we'll use opt_for_fn and it will all work as expected. I'm sending draft of the patch where I add Optimization keyword. I put the keyword on params that affect behavior of a function optimizations (TREE/RTL). I skipped GGC params, ASAN params and basically all params that influence IPA optimization. I know that most of the inliner parameters should become Optimization and I'm leaving that to Martin and Honza. Martin
Honza
diff --git a/gcc/params.opt b/gcc/params.opt index 2e88ba21a2a..b1c84636395 100644 --- a/gcc/params.opt +++ b/gcc/params.opt @@ -23,11 +23,11 @@ ; 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 +Common Joined UInteger Var(param_align_loop_iterations) Optimization Init(4) Param 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 +Common Joined UInteger Var(param_align_threshold) Optimization Init(100) IntegerRange(1, 65536) Param Select fraction of the maximal frequency of executions of basic block in function given basic block get alignment. -param=asan-globals= @@ -47,7 +47,7 @@ Common Joined UInteger Var(param_asan_instrument_writes) Init(1) IntegerRange(0, Enable asan store operations protection. -param=asan-instrumentation-with-call-threshold= -Common Joined UInteger Var(param_asan_instrumentation_with_call_threshold) Init(7000) Param +Common Joined UInteger Var(param_asan_instrumentation_with_call_threshold) Optimization Init(7000) Param Use callbacks instead of inline code if number of accesses in function becomes greater or equal to this number. -param=asan-memintrin= @@ -63,23 +63,23 @@ Common Joined UInteger Var(param_asan_use_after_return) Init(1) IntegerRange(0, Enable asan detection of use-after-return bugs. -param=avg-loop-niter= -Common Joined UInteger Var(param_avg_loop_niter) Init(10) IntegerRange(1, 65536) Param +Common Joined UInteger Var(param_avg_loop_niter) Optimization Init(10) IntegerRange(1, 65536) Param 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 +Common Joined UInteger Var(param_avoid_fma_max_bits) Optimization IntegerRange(0, 512) Param 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 +Common Joined UInteger Var(param_builtin_expect_probability) Optimization Init(90) IntegerRange(0, 100) Param 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 +Common Joined UInteger Var(param_builtin_string_cmp_inline_length) Optimization Init(3) IntegerRange(0, 100) Param 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 +Common Joined UInteger Var(param_case_values_threshold) Optimization Param 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= @@ -91,11 +91,11 @@ Common Joined UInteger Var(param_cxx_max_namespaces_for_diagnostic_help) Init(10 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 +Common Joined UInteger Var(param_dse_max_alias_queries_per_store) Optimization Init(256) Param 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 +Common Joined UInteger Var(param_dse_max_object_size) Optimization Init(256) Param Maximum size (in bytes) of objects tracked bytewise by dead store elimination. -param=early-inlining-insns= @@ -103,31 +103,31 @@ Common Joined UInteger Var(param_early_inlining_insns) Init(6) Param Maximal estimated growth of function body caused by early inlining of single call. -param=fsm-maximum-phi-arguments= -Common Joined UInteger Var(param_fsm_maximum_phi_arguments) Init(100) IntegerRange(1, 999999) Param +Common Joined UInteger Var(param_fsm_maximum_phi_arguments) Optimization Init(100) IntegerRange(1, 999999) Param 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 +Common Joined UInteger Var(param_fsm_scale_path_blocks) Optimization Init(3) IntegerRange(1, 10) Param 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 +Common Joined UInteger Var(param_fsm_scale_path_stmts) Optimization Init(2) IntegerRange(1, 10) Param 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 +Common Joined UInteger Var(param_gcse_after_reload_critical_fraction) Optimization Init(10) Param 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 +Common Joined UInteger Var(param_gcse_after_reload_partial_fraction) Optimization Init(3) Param 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 +Common Joined UInteger Var(param_gcse_cost_distance_ratio) Optimization Init(10) Param 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 +Common Joined UInteger Var(param_gcse_unrestricted_cost) Optimization Init(3) Param Cost at which GCSE optimizations will not constraint the distance an expression can travel. -param=ggc-min-expand= @@ -143,15 +143,15 @@ 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 +Common Joined UInteger Var(param_graphite_allow_codegen_errors) Optimization 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 +Common Joined UInteger Var(param_graphite_max_arrays_per_scop) Optimization Init(100) Param 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 +Common Joined UInteger Var(param_graphite_max_nb_scop_params) Optimization Init(10) Param Maximum number of parameters in a SCoP. -param=hash-table-verification-limit= @@ -175,7 +175,7 @@ Common Joined UInteger Var(param_hsa_gen_debug_stores) IntegerRange(0, 1) Param Level of hsa debug stores verbosity. -param=inline-heuristics-hint-percent= -Common Joined UInteger Var(param_inline_heuristics_hint_percent) Init(200) IntegerRange(100, 1000000) Param +Common Joined UInteger Var(param_inline_heuristics_hint_percent) Optimization Init(200) 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= @@ -239,47 +239,47 @@ Common Joined UInteger Var(param_ipcp_unit_growth) Init(10) Param How much can given compilation unit grow because of the interprocedural constant propagation (in percent). -param=ira-loop-reserved-regs= -Common Joined UInteger Var(param_ira_loop_reserved_regs) Init(2) Param +Common Joined UInteger Var(param_ira_loop_reserved_regs) Optimization Init(2) Param 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 +Common Joined UInteger Var(param_ira_max_conflict_table_size) Optimization Init(1000) Param Max size of conflict table in MB. -param=ira-max-loops-num= -Common Joined UInteger Var(param_ira_max_loops_num) Init(100) Param +Common Joined UInteger Var(param_ira_max_loops_num) Optimization Init(100) Param 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 +Common Joined UInteger Var(param_iv_always_prune_cand_set_bound) Optimization Init(10) Param 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 +Common Joined UInteger Var(param_iv_consider_all_candidates_bound) Optimization Init(40) Param 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 +Common Joined UInteger Var(param_iv_max_considered_uses) Optimization Init(250) Param 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 +Common Joined UInteger Var(param_jump_table_max_growth_ratio_for_size) Optimization Init(300) Param 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 +Common Joined UInteger Var(param_jump_table_max_growth_ratio_for_speed) Optimization Init(800) Param 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 +Common Joined UInteger Var(param_l1_cache_line_size) Optimization Init(32) Param The size of L1 cache line. -param=l1-cache-size= -Common Joined UInteger Var(param_l1_cache_size) Init(64) Param +Common Joined UInteger Var(param_l1_cache_size) Optimization Init(64) Param The size of L1 cache. -param=l2-cache-size= -Common Joined UInteger Var(param_l2_cache_size) Init(512) Param +Common Joined UInteger Var(param_l2_cache_size) Optimization Init(512) Param The size of L2 cache. -param=large-function-growth= @@ -303,47 +303,47 @@ Common Joined UInteger Var(param_large_unit_insns) Init(10000) Param The size of translation unit to be considered large. -param=lim-expensive= -Common Joined UInteger Var(param_lim_expensive) Init(20) Param +Common Joined UInteger Var(param_lim_expensive) Optimization Init(20) Param 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 +Common Joined UInteger Var(param_logical_op_non_short_circuit) Optimization 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 +Common Joined UInteger Var(param_loop_block_tile_size) Optimization Init(51) Param 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 +Common Joined UInteger Var(param_loop_interchange_max_num_stmts) Optimization Init(64) Param 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 +Common Joined UInteger Var(param_loop_interchange_stride_ratio) Optimization Init(2) Param 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 +Common Joined UInteger Var(param_loop_invariant_max_bbs_in_loop) Optimization Init(10000) Param 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 +Common Joined UInteger Var(param_loop_max_datarefs_for_datadeps) Optimization Init(1000) Param 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 +Common Joined UInteger Var(param_loop_versioning_max_inner_insns) Optimization Init(200) Param 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 +Common Joined UInteger Var(param_loop_versioning_max_outer_insns) Optimization Init(100) Param 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 +Common Joined UInteger Var(param_lra_inheritance_ebb_probability_cutoff) Optimization Init(40) IntegerRange(0, 100) Param 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 +Common Joined UInteger Var(param_lra_max_considered_reload_pseudos) Optimization Init(500) Param The max number of reload pseudos which are considered during spilling a non-reload pseudo. -param=lto-max-partition= @@ -363,39 +363,39 @@ Common Joined UInteger Var(param_lto_partitions) Init(128) IntegerRange(1, 65536 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 +Common Joined UInteger Var(param_max_average_unrolled_insns) Optimization Init(80) Param 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 +Common Joined UInteger Var(param_max_combine_insns) Optimization Init(4) IntegerRange(2, 4) Param 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 +Common Joined UInteger Var(param_max_unroll_iterations) Optimization Init(8) Param 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 +Common Joined UInteger Var(param_max_completely_peel_times) Optimization Init(16) Param 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 +Common Joined UInteger Var(param_max_completely_peeled_insns) Optimization Init(200) Param 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 +Common Joined UInteger Var(param_max_crossjump_edges) Optimization Init(100) Param 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 +Common Joined UInteger Var(param_max_cse_insns) Optimization Init(1000) Param 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 +Common Joined UInteger Var(param_max_cse_path_length) Optimization Init(10) IntegerRange(1, 65536) Param 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 +Common Joined UInteger Var(param_max_cselib_memory_locations) Optimization Init(500) Param The maximum memory locations recorded by cselib. -param=max-debug-marker-count= @@ -403,15 +403,15 @@ Common Joined UInteger Var(param_max_debug_marker_count) Init(100000) Param 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 +Common Joined UInteger Var(param_max_delay_slot_insn_search) Optimization Init(100) Param 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 +Common Joined UInteger Var(param_max_delay_slot_live_search) Optimization Init(333) Param 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 +Common Joined UInteger Var(param_max_dse_active_local_stores) Optimization Init(5000) Param Maximum number of active local stores in RTL dead store elimination. -param=max-early-inliner-iterations= @@ -419,39 +419,39 @@ Common Joined UInteger Var(param_early_inliner_max_iterations) Init(1) Param 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 +Common Joined UInteger Var(param_max_fields_for_field_sensitive) Optimization 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 +Common Joined UInteger Var(param_max_fsm_thread_length) Optimization Init(10) IntegerRange(1, 999999) Param 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 +Common Joined UInteger Var(param_max_fsm_thread_path_insns) Optimization Init(100) IntegerRange(1, 999999) Param 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 +Common Joined UInteger Var(param_max_fsm_thread_paths) Optimization Init(50) IntegerRange(1, 999999) Param 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 +Common Joined UInteger Var(param_max_gcse_insertion_ratio) Optimization Init(20) Param The maximum ratio of insertions to deletions of expressions in GCSE. -param=max-gcse-memory= -Common Joined UInteger Var(param_max_gcse_memory) Init(134217728) Param +Common Joined UInteger Var(param_max_gcse_memory) Optimization Init(134217728) Param The maximum amount of memory to be allocated by GCSE. -param=max-goto-duplication-insns= -Common Joined UInteger Var(param_max_goto_duplication_insns) Init(8) Param +Common Joined UInteger Var(param_max_goto_duplication_insns) Optimization Init(8) Param 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 +Common Joined UInteger Var(param_max_grow_copy_bb_insns) Optimization Init(8) Param The maximum expansion factor when copying basic blocks. -param=max-hoist-depth= -Common Joined UInteger Var(param_max_hoist_depth) Init(30) Param +Common Joined UInteger Var(param_max_hoist_depth) Optimization Init(30) Param Maximum depth of search in the dominator tree for expressions to hoist. -param=max-inline-insns-auto= @@ -471,7 +471,7 @@ Common Joined UInteger Var(param_max_inline_insns_single) Init(30) 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) Param +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= @@ -487,107 +487,107 @@ Common Joined UInteger Var(param_max_inline_recursive_depth_auto) 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 +Common Joined UInteger Var(param_max_isl_operations) Optimization Init(350000) Param 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 +Common Joined UInteger Var(param_max_iterations_computation_cost) Optimization Init(10) Param 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 +Common Joined UInteger Var(param_max_iterations_to_track) Optimization Init(1000) Param 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 +Common Joined UInteger Var(param_max_jump_thread_duplication_stmts) Optimization Init(15) Param 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 +Common Joined UInteger Var(param_max_last_value_rtl) Optimization Init(10000) Param 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 +Common Joined UInteger Var(param_max_loop_header_insns) Optimization Init(20) Param 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 +Common Joined UInteger Var(param_max_modulo_backtrack_attempts) Optimization Init(40) Param 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 +Common Joined UInteger Var(param_max_partial_antic_length) Optimization Init(100) Param 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 +Common Joined UInteger Var(param_max_peel_branches) Optimization Init(32) Param 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 +Common Joined UInteger Var(param_max_peel_times) Optimization Init(16) Param The maximum number of peelings of a single loop. -param=max-peeled-insns= -Common Joined UInteger Var(param_max_peeled_insns) Init(100) Param +Common Joined UInteger Var(param_max_peeled_insns) Optimization Init(100) Param 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 +Common Joined UInteger Var(param_max_pending_list_length) Optimization Init(32) Param 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 +Common Joined UInteger Var(param_max_pipeline_region_blocks) Optimization Init(15) Param 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 +Common Joined UInteger Var(param_max_pipeline_region_insns) Optimization Init(200) Param 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 +Common Joined UInteger Var(param_max_pow_sqrt_depth) Optimization Init(5) IntegerRange(1, 32) Param 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) Param +Common Joined UInteger Var(param_max_predicted_iterations) Optimization Init(100) Param 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 +Common Joined UInteger Var(param_max_reload_search_insns) Optimization Init(100) Param 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 +Common Joined UInteger Var(param_max_rtl_if_conversion_insns) Optimization Init(10) IntegerRange(0, 99) Param 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 +Common Joined UInteger Var(param_max_rtl_if_conversion_predictable_cost) Optimization Init(20) IntegerRange(0, 200) Param 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 +Common Joined UInteger Var(param_max_rtl_if_conversion_unpredictable_cost) Optimization Init(40) IntegerRange(0, 200) Param 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 +Common Joined UInteger Var(param_max_sched_extend_regions_iters) Optimization Param 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 +Common Joined UInteger Var(param_max_sched_insn_conflict_delay) Optimization Init(3) IntegerRange(1, 10) Param 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 +Common Joined UInteger Var(param_max_sched_ready_insns) Optimization Init(100) IntegerRange(1, 65536) Param 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 +Common Joined UInteger Var(param_max_sched_region_blocks) Optimization Init(10) Param 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 +Common Joined UInteger Var(param_max_sched_region_insns) Optimization Init(100) Param 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 +Common Joined UInteger Var(param_max_slsr_candidate_scan) Optimization Init(50) IntegerRange(1, 999999) Param Maximum length of candidate scans for straight-line strength reduction. -param=max-speculative-devirt-maydefs= @@ -595,51 +595,51 @@ Common Joined UInteger Var(param_max_speculative_devirt_maydefs) Init(50) Param 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 +Common Joined UInteger Var(param_max_ssa_name_query_depth) Optimization 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 +Common Joined UInteger Var(param_max_stores_to_merge) Optimization Init(64) IntegerRange(2, 65536) Param 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 +Common Joined UInteger Var(param_max_stores_to_sink) Optimization Init(2) Param Maximum number of conditional store pairs that can be sunk. -param=max-tail-merge-comparisons= -Common Joined UInteger Var(param_max_tail_merge_comparisons) Init(10) Param +Common Joined UInteger Var(param_max_tail_merge_comparisons) Optimization Init(10) Param 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 +Common Joined UInteger Var(param_max_tail_merge_iterations) Optimization Init(2) Param 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 +Common Joined UInteger Var(param_max_tracked_strlens) Optimization Init(10000) Param 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 +Common Joined UInteger Var(param_max_tree_if_conversion_phi_args) Optimization Init(4) IntegerRange(2, 65536) Param 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 +Common Joined UInteger Var(param_max_unroll_times) Optimization Init(8) Param The maximum number of unrollings of a single loop. -param=max-unrolled-insns= -Common Joined UInteger Var(param_max_unrolled_insns) Init(200) Param +Common Joined UInteger Var(param_max_unrolled_insns) Optimization Init(200) Param 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 +Common Joined UInteger Var(param_max_unswitch_insns) Optimization Init(50) Param The maximum number of insns of an unswitched loop. -param=max-unswitch-level= -Common Joined UInteger Var(param_max_unswitch_level) Init(3) Param +Common Joined UInteger Var(param_max_unswitch_level) Optimization Init(3) Param 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 +Common Joined UInteger Var(param_max_variable_expansions) Optimization Init(1) Param 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= @@ -655,11 +655,11 @@ Common Joined UInteger Var(param_max_vartrack_size) Init(50000000) Param Max. size of var tracking hash tables. -param=max-vrp-switch-assertions= -Common Joined UInteger Var(param_max_vrp_switch_assertions) Init(10) Param +Common Joined UInteger Var(param_max_vrp_switch_assertions) Optimization Init(10) Param 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 +Common Joined UInteger Var(param_min_crossjump_insns) Optimization Init(5) IntegerRange(1, 65536) Param The minimum number of matching instructions to consider for crossjumping. -param=min-inline-recursive-probability= @@ -667,11 +667,11 @@ Common Joined UInteger Var(param_min_inline_recursive_probability) Init(10) Para 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 +Common Joined UInteger Var(param_min_insn_to_prefetch_ratio) Optimization Init(9) Param 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 +Common Joined UInteger Var(param_min_loop_cond_split_prob) Optimization Init(30) IntegerRange(0, 100) Param The minimum threshold for probability of semi-invariant condition statement to trigger loop split. -param=min-nondebug-insn-uid= @@ -679,27 +679,27 @@ 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 +Common Joined UInteger Var(param_min_size_for_stack_sharing) Optimization Init(32) Param 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 +Common Joined UInteger Var(param_min_spec_prob) Optimization Init(40) Param 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 +Common Joined UInteger Var(param_min_vect_loop_bound) Optimization Param If -ftree-vectorize is used, the minimal loop bound of a loop to be considered for vectorization. -param=parloops-chunk-size= -Common Joined UInteger Var(param_parloops_chunk_size) Param +Common Joined UInteger Var(param_parloops_chunk_size) Optimization Param 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 +Common Joined UInteger Var(param_parloops_min_per_thread) Optimization Init(100) IntegerRange(2, 65536) Param 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 +Common Joined Var(param_parloops_schedule) Enum(parloops_schedule_type) Optimization Param --param=parloops-schedule=[static|dynamic|guided|auto|runtime] Schedule type of omp schedule for loops parallelized by parloops. Enum @@ -725,23 +725,23 @@ Common Joined UInteger Var(param_partial_inlining_entry_probability) Init(70) In 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 +Common Joined UInteger Var(param_predictable_branch_outcome) Optimization Init(2) IntegerRange(0, 50) Param 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 +Common Joined UInteger Var(param_prefetch_dynamic_strides) Optimization Init(1) IntegerRange(0, 1) Param Whether software prefetch hints should be issued for non-constant strides. -param=prefetch-latency= -Common Joined UInteger Var(param_prefetch_latency) Init(200) Param +Common Joined UInteger Var(param_prefetch_latency) Optimization Init(200) Param 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 +Common Joined UInteger Var(param_prefetch_min_insn_to_mem_ratio) Optimization Init(3) Param 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 +Common Joined UInteger Var(param_prefetch_minimum_stride) Optimization Init(-1) Param The minimum constant stride beyond which we should use prefetch hints for. -param=profile-func-internal-id= @@ -749,151 +749,151 @@ Common Joined UInteger Var(param_profile_func_internal_id) IntegerRange(0, 1) Pa 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 +Common Joined UInteger Var(param_rpo_vn_max_loop_depth) Optimization Init(7) IntegerRange(2, 65536) Param 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 +Common Joined UInteger Var(param_sccvn_max_alias_queries_per_access) Optimization Init(1000) Param 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 +Common Joined UInteger Var(param_scev_max_expr_complexity) Optimization Init(10) Param 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 +Common Joined UInteger Var(param_scev_max_expr_size) Optimization Init(100) Param 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 +Common Joined UInteger Var(param_sched_autopref_queue_depth) Optimization Init(-1) Param 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 +Common Joined UInteger Var(param_sched_mem_true_dep_cost) Optimization Init(1) Param 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 +Common Joined UInteger Var(param_sched_pressure_algorithm) Optimization Init(1) IntegerRange(1, 2) Param 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 +Common Joined UInteger Var(param_sched_spec_prob_cutoff) Optimization Init(40) IntegerRange(0, 100) Param 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 +Common Joined UInteger Var(param_sched_state_edge_prob_cutoff) Optimization Init(10) IntegerRange(0, 100) Param 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 +Common Joined UInteger Var(param_selsched_insns_to_rename) Optimization Init(2) Param 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 +Common Joined UInteger Var(param_selsched_max_lookahead) Optimization Init(50) Param 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 +Common Joined UInteger Var(param_selsched_max_sched_times) Optimization Init(2) IntegerRange(1, 65536) Param Maximum number of times that an insn could be scheduled. -param=simultaneous-prefetches= -Common Joined UInteger Var(param_simultaneous_prefetches) Init(3) Param +Common Joined UInteger Var(param_simultaneous_prefetches) Optimization Init(3) Param 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 +Common Joined UInteger Var(param_sink_frequency_threshold) Optimization Init(75) IntegerRange(0, 100) Param Target block's relative execution frequency (as a percentage) required to sink a statement. -param=slp-max-insns-in-bb= -Common Joined UInteger Var(param_slp_max_insns_in_bb) Init(1000) Param +Common Joined UInteger Var(param_slp_max_insns_in_bb) Optimization Init(1000) Param Maximum number of instructions in basic block to be considered for SLP vectorization. -param=sms-dfa-history= -Common Joined UInteger Var(param_sms_dfa_history) Param +Common Joined UInteger Var(param_sms_dfa_history) Optimization Param 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 +Common Joined UInteger Var(param_sms_loop_average_count_threshold) Optimization Param 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(100) Param +Common Joined UInteger Var(param_sms_max_ii_factor) Optimization Init(100) Param A factor for tuning the upper bound that swing modulo scheduler uses for scheduling a loop. -param=sms-min-sc= -Common Joined UInteger Var(param_sms_min_sc) Init(2) IntegerRange(1, 65536) Param +Common Joined UInteger Var(param_sms_min_sc) Optimization Init(2) IntegerRange(1, 65536) Param The minimum value of stage count that swing modulo scheduler will generate. -param=sra-max-scalarization-size-Osize= -Common Joined UInteger Var(param_sra_max_scalarization_size_size) Param +Common Joined UInteger Var(param_sra_max_scalarization_size_size) Optimization Param 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 +Common Joined UInteger Var(param_sra_max_scalarization_size_speed) Optimization Param Maximum size, in storage units, of an aggregate which should be considered for scalarization when compiling for speed. -param=ssa-name-def-chain-limit= -Common Joined UInteger Var(param_ssa_name_def_chain_limit) Init(512) Param +Common Joined UInteger Var(param_ssa_name_def_chain_limit) Optimization Init(512) Param The maximum number of SSA_NAME assignments to follow in determining a value. -param=ssp-buffer-size= -Common Joined UInteger Var(param_ssp_buffer_size) Init(8) IntegerRange(1, 65536) Param +Common Joined UInteger Var(param_ssp_buffer_size) Optimization Init(8) IntegerRange(1, 65536) Param The lower bound for a buffer to be considered for stack smashing protection. -param=stack-clash-protection-guard-size= -Common Joined UInteger Var(param_stack_clash_protection_guard_size) Init(12) IntegerRange(12, 30) Param +Common Joined UInteger Var(param_stack_clash_protection_guard_size) Optimization Init(12) IntegerRange(12, 30) Param 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 +Common Joined UInteger Var(param_stack_clash_protection_probe_interval) Optimization Init(12) IntegerRange(10, 16) Param 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 +Common Joined UInteger Var(param_store_merging_allow_unaligned) Optimization Init(1) IntegerRange(0, 1) Param 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 +Common Joined UInteger Var(param_store_merging_max_size) Optimization Init(65536) IntegerRange(1, 65536) Param 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 +Common Joined UInteger Var(param_switch_conversion_branch_ratio) Optimization Init(8) IntegerRange(1, 65536) Param The maximum ratio between array size and switch branches for a switch conversion to take place. -param=tm-max-aggregate-size= -Common Joined UInteger Var(param_tm_max_aggregate_size) Init(9) Param +Common Joined UInteger Var(param_tm_max_aggregate_size) Optimization Init(9) Param 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 +Common Joined UInteger Var(param_tracer_dynamic_coverage) Optimization Init(75) IntegerRange(0, 100) Param 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 +Common Joined UInteger Var(param_tracer_dynamic_coverage_feedback) Optimization Init(95) IntegerRange(0, 100) Param 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 +Common Joined UInteger Var(param_tracer_max_code_growth) Optimization Init(100) Param 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 +Common Joined UInteger Var(param_tracer_min_branch_probability) Optimization Init(50) IntegerRange(0, 100) Param 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 +Common Joined UInteger Var(param_tracer_min_branch_probability_feedback) Optimization Init(80) IntegerRange(0, 100) Param 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 +Common Joined UInteger Var(param_tracer_min_branch_ratio) Optimization Init(10) IntegerRange(0, 100) Param 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 +Common Joined UInteger Var(param_tree_reassoc_width) Optimization Param Set the maximum number of instructions executed in parallel in reassociated tree. If 0, use the target dependent heuristic. -param=uninit-control-dep-attempts= -Common Joined UInteger Var(param_uninit_control_dep_attempts) Init(1000) IntegerRange(1, 65536) Param +Common Joined UInteger Var(param_uninit_control_dep_attempts) Optimization Init(1000) IntegerRange(1, 65536) Param Maximum number of nested calls to search for control dependencies during uninitialized variable analysis. -param=uninlined-function-insns= @@ -917,15 +917,15 @@ Common Joined UInteger Var(param_unlikely_bb_count_fraction) Init(20) Param 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 +Common Joined UInteger Var(param_unroll_jam_max_unroll) Optimization Init(4) Param 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 +Common Joined UInteger Var(param_unroll_jam_min_percent) Optimization Init(1) IntegerRange(0, 100) Param 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 +Common Joined UInteger Var(param_use_after_scope_direct_emission_threshold) Optimization Init(256) Param Use direct poisoning/unpoisoning instructions for variables smaller or equal to this number. -param=use-canonical-types= @@ -933,19 +933,19 @@ Common Joined UInteger Var(param_use_canonical_types) Init(1) IntegerRange(0, 1) Whether to use canonical types. -param=vect-epilogues-nomask= -Common Joined UInteger Var(param_vect_epilogues_nomask) Init(1) IntegerRange(0, 1) Param +Common Joined UInteger Var(param_vect_epilogues_nomask) Optimization Init(1) IntegerRange(0, 1) Param 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 +Common Joined UInteger Var(param_vect_max_peeling_for_alignment) Optimization Init(-1) IntegerRange(-1, 64) Param 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 +Common Joined UInteger Var(param_vect_max_version_for_alias_checks) Optimization Init(10) Param 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 +Common Joined UInteger Var(param_vect_max_version_for_alignment_checks) Optimization Init(6) Param Bound on number of runtime checks inserted by the vectorizer's loop versioning for alignment check. ; This comment is to ensure we retain the blank line above.
