X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=gcc%2Fparams.def;h=fa89a5221ec0990e39ffd5b273479bbe76d1acc1;hb=a2145c8fcd31ec4449cfd8bf9375c269c4627948;hp=f6f549c1466b203ea695564b4459e6903b9c3121;hpb=c2e502a56a95d14a87d60f288c1aa8612fea911c;p=pf3gnuchains%2Fgcc-fork.git diff --git a/gcc/params.def b/gcc/params.def index f6f549c1466..fa89a5221ec 100644 --- a/gcc/params.def +++ b/gcc/params.def @@ -1,5 +1,6 @@ /* params.def - Run-time parameters. - Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 + Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, + 2011 Free Software Foundation, Inc. Written by Mark Mitchell . @@ -38,16 +39,6 @@ along with GCC; see the file COPYING3. If not see Be sure to add an entry to invoke.texi summarizing the parameter. */ -/* The threshold ratio between current and hottest structure counts. - We say that if the ratio of the current structure count, - calculated by profiling, to the hottest structure count - in the program is less than this parameter, then structure - reorganization is not applied. The default is 10%. */ -DEFPARAM (PARAM_STRUCT_REORG_COLD_STRUCT_RATIO, - "struct-reorg-cold-struct-ratio", - "The threshold ratio between current and hottest structure counts", - 10, 0, 100) - /* When branch is predicted to be taken with probability lower than this threshold (in percent), then it is considered well predictable. */ DEFPARAM (PARAM_PREDICTABLE_BRANCH_OUTCOME, @@ -78,11 +69,11 @@ DEFPARAM (PARAM_MAX_INLINE_INSNS_SINGLE, that is applied to functions marked inlined (or defined in the class declaration in C++) given by the "max-inline-insns-single" parameter. - The default value is 90. */ + The default value is 40. */ DEFPARAM (PARAM_MAX_INLINE_INSNS_AUTO, "max-inline-insns-auto", "The maximum number of instructions when automatically inlining", - 50, 0, 0) + 40, 0, 0) DEFPARAM (PARAM_MAX_INLINE_INSNS_RECURSIVE, "max-inline-insns-recursive", @@ -117,6 +108,18 @@ DEFPARAM (PARAM_EARLY_INLINER_MAX_ITERATIONS, "The maximum number of nested indirect inlining performed by early inliner", 10, 0, 0) +/* Limit on probability of entry BB. */ +DEFPARAM (PARAM_COMDAT_SHARING_PROBABILITY, + "comdat-sharing-probability", + "Probability that COMDAT function will be shared with different compilatoin unit", + 20, 0, 0) + +/* Limit on probability of entry BB. */ +DEFPARAM (PARAM_PARTIAL_INLINING_ENTRY_PROBABILITY, + "partial-inlining-entry-probability", + "Maximum probability of the entry BB of split region (in percent relative to entry BB of the function) to make partial inlining happen", + 70, 0, 0) + /* Limit the number of expansions created by the variable expansion optimization to avoid register pressure. */ DEFPARAM (PARAM_MAX_VARIABLE_EXPANSIONS, @@ -185,7 +188,7 @@ DEFPARAM(PARAM_IPCP_UNIT_GROWTH, DEFPARAM(PARAM_EARLY_INLINING_INSNS, "early-inlining-insns", "Maximal estimated growth of function body caused by early inlining of single call", - 8, 0, 0) + 11, 0, 0) DEFPARAM(PARAM_LARGE_STACK_FRAME, "large-stack-frame", "The size of stack frame to be considered large", @@ -202,6 +205,13 @@ DEFPARAM(PARAM_MAX_GCSE_MEMORY, "The maximum amount of memory to be allocated by GCSE", 50 * 1024 * 1024, 0, 0) +/* The GCSE optimization of an expression will avoided if the ratio of + insertions to deletions is greater than this value. */ +DEFPARAM(PARAM_MAX_GCSE_INSERTION_RATIO, + "max-gcse-insertion-ratio", + "The maximum ratio of insertions to deletions of expressions in GCSE", + 20, 0, 0) + /* This is the threshold ratio when to perform partial redundancy elimination after reload. We perform partial redundancy elimination when the following holds: @@ -219,6 +229,29 @@ DEFPARAM(PARAM_GCSE_AFTER_RELOAD_CRITICAL_FRACTION, "gcse-after-reload-critical-fraction", "The threshold ratio of critical edges execution count that permit performing redundancy elimination after reload", 10, 0, 0) + +/* GCSE will use GCSE_COST_DISTANCE_RATION as a scaling factor + to calculate maximum distance for which an expression is allowed to move + from its rtx_cost. */ +DEFPARAM(PARAM_GCSE_COST_DISTANCE_RATIO, + "gcse-cost-distance-ratio", + "Scaling factor in calculation of maximum distance an expression can be moved by GCSE optimizations", + 10, 0, 0) +/* GCSE won't restrict distance for which an expression with rtx_cost greater + than COSTS_N_INSN(GCSE_UNRESTRICTED_COST) is allowed to move. */ +DEFPARAM(PARAM_GCSE_UNRESTRICTED_COST, + "gcse-unrestricted-cost", + "Cost at which GCSE optimizations will not constraint the distance an expression can travel", + 3, 0, 0) + +/* How deep from a given basic block the dominator tree should be searched + for expressions to hoist to the block. The value of 0 will avoid limiting + the search. */ +DEFPARAM(PARAM_MAX_HOIST_DEPTH, + "max-hoist-depth", + "Maximum depth of search in the dominator tree for expressions to hoist", + 30, 0, 0) + /* This parameter limits the number of insns in a loop that will be unrolled, and by how much the loop is unrolled. @@ -301,6 +334,11 @@ DEFPARAM(PARAM_SMS_MAX_II_FACTOR, "sms-max-ii-factor", "A factor for tuning the upper bound that swing modulo scheduler uses for scheduling a loop", 100, 0, 0) +/* The minimum value of stage count that swing modulo scheduler will generate. */ +DEFPARAM(PARAM_SMS_MIN_SC, + "sms-min-sc", + "The minimum value of stage count that swing modulo scheduler will generate.", + 2, 1, 1) DEFPARAM(PARAM_SMS_DFA_HISTORY, "sms-dfa-history", "The number of cycles the swing modulo scheduler considers when checking conflicts using DFA", @@ -438,7 +476,12 @@ DEFPARAM(PARAM_IV_ALWAYS_PRUNE_CAND_SET_BOUND, DEFPARAM(PARAM_SCEV_MAX_EXPR_SIZE, "scev-max-expr-size", "Bound on size of expressions used in the scalar evolutions analyzer", - 20, 0, 0) + 100, 0, 0) + +DEFPARAM(PARAM_SCEV_MAX_EXPR_COMPLEXITY, + "scev-max-expr-complexity", + "Bound on the complexity of the expressions in the scalar evolutions analyzer", + 10, 0, 0) DEFPARAM(PARAM_OMEGA_MAX_VARS, "omega-max-vars", @@ -650,6 +693,12 @@ DEFPARAM(PARAM_MAX_SCHED_READY_INSNS, "The maximum number of instructions ready to be issued to be considered by the scheduler during the first scheduling pass", 100, 0, 0) +/* This is the maximum number of active local stores RTL DSE will consider. */ +DEFPARAM (PARAM_MAX_DSE_ACTIVE_LOCAL_STORES, + "max-dse-active-local-stores", + "Maximum number of active local stores in RTL dead store elimination", + 5000, 0, 0) + /* Prefetching and cache-optimizations related parameters. Default values are usually set by machine description. */ @@ -749,9 +798,16 @@ DEFPARAM (PARAM_LOOP_BLOCK_TILE_SIZE, DEFPARAM (PARAM_GRAPHITE_MAX_NB_SCOP_PARAMS, "graphite-max-nb-scop-params", - "maximal number of parameters in a SCoP", + "maximum number of parameters in a SCoP", 10, 0, 0) +/* Maximal number of basic blocks in the functions analyzed by Graphite. */ + +DEFPARAM (PARAM_GRAPHITE_MAX_BBS_PER_FUNCTION, + "graphite-max-bbs-per-function", + "maximum number of basic blocks per function to be analyzed by Graphite", + 100, 0, 0) + /* Avoid doing loop invariant motion on very large loops. */ DEFPARAM (PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP, @@ -796,6 +852,39 @@ DEFPARAM (PARAM_IPA_SRA_PTR_GROWTH_FACTOR, "a pointer to an aggregate with", 2, 0, 0) +DEFPARAM (PARAM_DEVIRT_TYPE_LIST_SIZE, + "devirt-type-list-size", + "Maximum size of a type list associated with each parameter for " + "devirtualization", + 8, 0, 0) + +/* WHOPR partitioning configuration. */ + +DEFPARAM (PARAM_LTO_PARTITIONS, + "lto-partitions", + "Number of partitions the program should be split to", + 32, 1, 0) + +DEFPARAM (MIN_PARTITION_SIZE, + "lto-min-partition", + "Minimal size of a partition for LTO (in estimated instructions)", + 1000, 0, 0) + +/* Diagnostic parameters. */ + +DEFPARAM (CXX_MAX_NAMESPACES_FOR_DIAGNOSTIC_HELP, + "cxx-max-namespaces-for-diagnostic-help", + "Maximum number of namespaces to search for alternatives when " + "name lookup fails", + 1000, 0, 0) + +/* Maximum number of conditional store pairs that can be sunk. */ +DEFPARAM (PARAM_MAX_STORES_TO_SINK, + "max-stores-to-sink", + "Maximum number of conditional store pairs that can be sunk", + 2, 0, 0) + + /* Local variables: mode:c